imacs-519-voice

imacs-519-voice
IMACS Integrated Access System
Voice Cards Reference Guide
September 2004
Document Part Number: 830-00930-01
Release 5.1.9
Zhone Technologies
@Zhone Way
7001 Oakport Street
Oakland, CA 94621
USA
510.777.7000
www.zhone.com
info@zhone.com
COPYRIGHT ©2000-2004 Zhone Technologies, Inc. and its licensors. All rights reserved.
This publication is protected by copyright law. No part of this publication may be copied or distributed, transmitted, transcribed,
stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic,
mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission from Zhone
Technologies, Inc.
AccessNode, Arca-DACS, BAN, FiberJack, FlexBand, MALC, NetHorizhon, Sechtor, SLMS, VISTA, Z-Edge, ZMS, and
Universal Edge are trademarks of Zhone Technologies, Inc.
Zhone and the Zhone logo are trademarks of Zhone Technologies, Inc.
All other trademarks and registered trademarks are the property of their respective holders.
Zhone Technologies makes no representation or warranties with respect to the contents hereof and specifically disclaims any
implied warranties of merchantability, noninfringement, or fitness for a particular purpose. Further, Zhone Technologies reserves
the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Zhone
Technologies to notify any person of such revision or changes.
Product Description
The Voice Cards provide an interface between voice circuits and a digital network.Voice
interface cards are intended for short loop applications that require high port densities.
This integrated access system offers voice cards that support E&M, FXS, FXO, FXS Coin,
FXO Coin and P-Phone interfaces.
Voice Cards
•
E&M
E&M 2W*8 (810860), E&M-LB 4W*8 (811760),
E&M 4W*8 (811960)
E&M 2W*4-6 (8104), E&M 4W*2-6 (8812), E&M Wx2ER (8113)
E&M 4W*4-6 (8114), E&M 4W*ER (8115), E&M 4W*8-6 (8118)
•
FXS
FXS 2W*8-6 (812960)
FXS 2W*2-9 (8122), FXS 2W*2-6 (8123), FXS 2W*4-9 (8124)
FXS 2W*4-6 (8125), FXS 2W*8-9 (8128)
•
FXO
FXO 2W*8-6 (813960, 813970)
FXO 2W*2-9 (8132), FXO 2W*2-6 (8133),
FXO 2W*4-9 (8134), FXO 2W*4-6 (8135),
FXO 2W*8-9 (8138)
•
FXS-C
FXS-C 2W*8-6 (814960)
FXS-C 6-900 (8148)
•
FXO-C
FXO-C 2W*8-6 (815960)
FXO-C 8-900 (8158)
•
LBVR
LBVR-8 Fax (830060)
•
P-Phone
PPO (813160), PPS (812160)
Note:
Cards listed in italics have been Manufacturing Discontinued (MD), but are
supported under this product host code for backward compatibility.
Running Head
Model No.
Using this Voice Card Reference Guide
This Voice Card Reference Guide provides technicians with switch settings, connector
pinouts, configuration, and troubleshooting information for the voice cards.
Chapter 1. E&M Card
Chapter 2. FXS Card
Chapter 3. FXO Card
Contents
Chapter 1
E&M Card
1.1
1.2
1.2.1
1.2.1.1
1.2.1.2
1.2.2
1.2.2.1
1.2.2.2
1.3
1.3.1
1.3.2
1.3.3
1.4
1.4.1
1.5
Chapter 2
FXS Card
2.1
2.2
2.2.1
2.2.1.1
2.2.1.2
2.3
2.3.1
2.3.2
2.4
2.5
2.6
Chapter 3
Introduction ....................................................................................................1-1
E&M Card Descriptions .................................................................................1-1
E&M 2W*8 Card Description (810860) ....................................................1-1
Card Switch Settings ..............................................................................1-1
Installing the E&M 2W*8 Card .............................................................1-3
E&M 4W*8 ER Card Description (811960) ..............................................1-4
Card Jumper/Switch Settings .................................................................1-4
Installing the E&M 4W*8 ER Card .......................................................1-4
E&M Card User Screens and Settings ...........................................................1-4
E&M Card Main Screen .............................................................................1-4
Test Screen ...............................................................................................1-10
Loopback Screen ......................................................................................1-15
E&M Card Error Messages ..........................................................................1-16
E&M Card Troubleshooting.....................................................................1-16
E&M Card Specifications ............................................................................1-17
Introduction ....................................................................................................2-1
FXS Card Descriptions ...................................................................................2-2
FXS 2W*8-6 Card Description (812960)...................................................2-2
Card Jumper/Switch Settings .................................................................2-2
Installing the Card ..................................................................................2-3
FXS Card User Screens and Settings .............................................................2-4
FXS Card Main Screen...............................................................................2-4
Test Screen ...............................................................................................2-13
FXS Error Messages .....................................................................................2-18
FXS Card Troubleshooting ..........................................................................2-18
FXS Card Specifications ..............................................................................2-19
FXO Card
3.1
Introduction ....................................................................................................3-1
3.2
FXO Card Descriptions ..................................................................................3-2
3.2.1
FXO 2W*8-6 Card Description (813970)..................................................3-2
3.2.1.1
Card Jumper/Switch Settings .................................................................3-2
3.2.1.2
Installing the Card ..................................................................................3-3
3.3
FXO Card User Screens and Settings ............................................................3-4
3.3.1
FXO Card Main Screen ..............................................................................3-4
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3.3.2
3.4
3.5
3.6
Chapter 4
FXS Coin Card
4.1
4.2
4.2.1
4.2.1.1
4.2.1.2
4.3
4.3.1
4.3.2
4.4
4.5
Chapter 5
Introduction ................................................................................................... 5-1
FXO Coin Card Descriptions ........................................................................ 5-1
FXO-C 2W*8-6 Coin Card Description (815960) .................................... 5-1
Card Jumper/Switch Settings................................................................. 5-1
Installing the Card ................................................................................. 5-3
FXO Coin Card User Screens and Settings ................................................... 5-3
FXO Coin Card Main Screen..................................................................... 5-3
Test Screen................................................................................................. 5-8
FXO Coin Card Error Messages .................................................................. 5-13
FXO Coin Card Troubleshooting ................................................................ 5-13
Low Bit Rate Voice Card
6.1
6.2
6.2.1
6.2.1.1
6.2.1.2
6.3
6.3.1
6.3.2
6.3.3
6.3.4
6.4
6.5
-ii
Introduction ................................................................................................... 4-1
FXS Coin Card Descriptions ......................................................................... 4-1
FXS-C 2W*8-6 Coin Card Description (814960) ..................................... 4-1
Card Jumper/Switch Settings................................................................. 4-1
Installing the Card ................................................................................. 4-3
FXS Coin Card User Screens and Settings .................................................... 4-3
FXS Coin Card Main Screen ..................................................................... 4-3
Test Screen................................................................................................. 4-9
FXS Coin Card Error Messages .................................................................. 4-13
FXS Coin Card Troubleshooting ................................................................. 4-13
FXO Coin Card
5.1
5.2
5.2.1
5.2.1.1
5.2.1.2
5.3
5.3.1
5.3.2
5.4
5.5
Chapter 6
Test Screen............................................................................................... 3-11
FXO Card Error Messages .......................................................................... 3-16
FXO Card Troubleshooting ......................................................................... 3-16
FXO Card Specifications ............................................................................. 3-17
Introduction ................................................................................................... 6-1
Low Bit Rate Voice Card Descriptions ......................................................... 6-1
Low Bit Rate Voice Card Description (830060) ....................................... 6-1
Card Jumper/Switch Settings................................................................. 6-1
Installing the Card ................................................................................. 6-1
LBRV Card User Screens and Settings ......................................................... 6-1
LBRV Card Main Configuration Screen ................................................... 6-1
Wan-Voice Time slot Configuration Screen ............................................. 6-6
Performance Screen ................................................................................... 6-9
LBRV LMI Screen................................................................................... 6-12
Low Bit Rate Voice Card Error Messages .................................................. 6-14
Low Bit Rate Voice Card Troubleshooting ................................................. 6-14
IMACS System Release 5.1.9
Voice Cards
Chapter 7
P-Phone (PPO/PPS Cards)
7.1
7.1.1
7.1.2
7.2
7.2.1
7.2.1.1
7.2.1.2
7.2.2
7.2.3
7.2.4
7.3
7.4
Voice Cards
Introduction ....................................................................................................7-1
Features.......................................................................................................7-1
P-Phone Compatibility Requirements ........................................................7-1
P-Phone Cards (PPO/PPS) .............................................................................7-2
P-Phone Cards Description (813160/812160)............................................7-2
Card Jumper/Switch Settings .................................................................7-3
Installing the P-Phone (PPO/PPS) Cards ...............................................7-4
P-Phone Cards User Screens and Settings..................................................7-4
P-Phone (PPO/PPS) Cards Main Screen ....................................................7-4
Alarm Handling ..........................................................................................7-7
P-Phone (PPO/PPS) Card Error Messages .....................................................7-8
P-Phone (PPO/PPS) Card Troubleshooting ...................................................7-8
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Voice Cards
Figures
1-1
1-2
1-3
1-4
1-5
2-1
2-2
2-3
2-4
3-1
3-2
3-3
3-4
4-1
4-2
4-3
4-4
5-1
5-2
5-3
5-4
6-1
6-2
6-3
6-4
7-1
7-2
7-3
Voice Cards
Typical E&M Card Switches...............................................................................................1-2
Typical E&M Card Main Screen .........................................................................................1-5
E&M Card Loopbacks .........................................................................................................1-9
Typical E&M Card Test Screen.........................................................................................1-11
Typical E&M Loopback Screen ........................................................................................1-15
FXS 2W*8-6 Card Jumpers Settings ...................................................................................2-3
Typical FXS Card Main Screen...........................................................................................2-4
FXS Card Loopbacks.........................................................................................................2-11
Typical FXS Card Test Screen ..........................................................................................2-14
FXO 2W*8-6 Card Jumper Settings ....................................................................................3-3
Typical FXO Card Main Screen ..........................................................................................3-4
FXO Card Loopbacks ..........................................................................................................3-9
Typical FXO Card Test Screen..........................................................................................3-12
Jumper Settings for FXS Coin Card ....................................................................................4-2
Typical FXS Coin Card Main Screen ..................................................................................4-3
FXS Coin Card Loopbacks ..................................................................................................4-7
Typical FXS Coin Card Test Screen....................................................................................4-9
Jumpers for MRD Mode ......................................................................................................5-2
Typical FXO Coin Card Main Screen .................................................................................5-3
FXO Coin Card Loopbacks .................................................................................................5-7
Typical FXO Coin Card Test Screen ...................................................................................5-9
Low Bit Rate Voice Card Main Configuration Screen........................................................6-2
Wan-Voice Time slots Configuration Screen ......................................................................6-6
LBRV Performance Screen ...............................................................................................6-10
LBRV LMI Screen.............................................................................................................6-12
P-Phone PPO and PPS Cards Jumper Settings ....................................................................7-3
PPO/PPS Cards Main Screen...............................................................................................7-4
Main System Screen ............................................................................................................7-8
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Tables
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
3-1
3-2
3-3
3-4
3-5
4-1
4-2
4-3
4-4
4-5
5-1
5-2
5-3
5-4
5-5
6-1
6-2
6-3
6-4
6-5
6-6
7-1
7-2
7-3
Voice Cards
Typical E&M Card Switch Definitions ..............................................................................1-3
Typical E&M Card Switch Settings ...................................................................................1-3
Main Screen Actions .........................................................................................................1-5
Main Screen Option Settings and Defaults........................................................................1-6
Test Screen Actions .........................................................................................................1-11
Test Screen Option Settings and Defaults .......................................................................1-11
Status Information Field Settings ....................................................................................1-14
Loopback Screen of Actions............................................................................................1-15
Loopback Screen Option Settings and Defaults ..............................................................1-16
Main Screen Actions .........................................................................................................2-4
Main Screen Option Settings and Defaults.........................................................................2-5
Incoming Calls (ls-R2e).....................................................................................................2-7
Outgoing Calls (ls-R2e).....................................................................................................2-8
Incoming Calls (R1.5i) ......................................................................................................2-9
Outgoing Calls (R1.5o)......................................................................................................2-9
Test Screen Actions .........................................................................................................2-14
Test Screen Option Settings and Defaults ........................................................................2-14
Status Information Field Settings ....................................................................................2-17
Main Screen Actions .........................................................................................................3-4
Main Screen Option Settings and Defaults........................................................................3-5
Test Screen Actions ..........................................................................................................3-12
Test Screen Option Settings and Defaults ........................................................................3-12
Status Information Field Settings ....................................................................................3-15
Main Screen Actions .........................................................................................................4-4
Main Screen Option Settings and Defaults........................................................................4-4
Test Screen Actions ...........................................................................................................4-9
Test Screen Option Settings and Defaults .......................................................................4-10
Status Information Field Settings .....................................................................................4-12
Main Screen Actions ..........................................................................................................5-3
Main Screen Option Settings and Defaults.........................................................................5-4
Test Screen Actions ............................................................................................................5-9
Test Screen Option Settings and Defaults ..........................................................................5-9
Status Information Field Settings .....................................................................................5-13
Main Screen Actions ..........................................................................................................6-2
Main Screen Option Settings and Defaults.........................................................................6-3
Wan-Voice Time slots Configuration Screen Menu of Actions.........................................6-6
LBRV Card Setting Options and Defaults .........................................................................6-7
LBRV Performance Screen Actions Menu ......................................................................6-11
LBRV LMI Screen Actions Menu....................................................................................6-13
PPO/PPS Cards Main Screen Menu of Actions .................................................................7-5
PPO/PPS Cards Main Screen Option Settings and Defaults ..............................................7-5
Status Indicators .................................................................................................................7-8
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Voice Cards
E&M Card
Introduction
Chapter 1
E&M Card
1.1
Introduction
This chapter provides switch settings, connector pinouts, configuration, and troubleshooting
information for the E&M Voice Cards. These cards are identified as the E&M 2W*8 (810860),
E&M 4W*8 (811960), and on their faceplate ejectors.
The E&M cards manage the flow of toll-grade voice traffic through the Integrated Access
System. Each card encodes an analog (voice, VF) signal to a digital bitstream at the local
Integrated Access System for transmission over a T1 or E1 network. Each card also decodes
the digital signal to analog at the remote system. Both cards support E&M signaling types I,
II, IV, and V.
Each card connects to eight CPE voice circuits from a PBX or other user facility. Normal
E&M, Transmission-Only, and E&M R2 signaling are supported. The E&M cards also can use
the voice compression features of an ADPCM card.
1.2
E&M Card Descriptions
1.2.1
E&M 2W*8 Card Description (810860)
The E&M 2W*8 card has eight voice ports, each with 600-ohm terminating impedance.
Notice!
UL STATEMENT
OPERATION OF THIS INTERFACE IS LIMITED TO INTRA-BUILDING
CONNECTIONS ONLY
1.2.1.1
Card Switch Settings
The E&M 2W*8 card has four switches (S1 through S4) that you must set before inserting the
card into the chassis. These switches establish the type of E&M the card will use on all eight
ports. Figure 1-1 shows these switches, Table 1-1 defines their purposes, and Table 1-2 lists
the settings for each signaling type.
Voice Cards
IMACS System Release 5.1.9
1-1
Model
E&M
CardNo.
Running
Head
E&M
Card
Descriptions
E&M
2W*8
S1
S2
S3
S4
US/EURO
Jumper
P
1
US/EURO
Jumper
Labeling
Figure 1-1. Typical E&M Card Switches
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Server Cards
E&M Card
E&M Card Descriptions
Table 1-1. Typical E&M Card Switch Definitions
Switch
S1
S2
S3
S4
Definition
Source of the E (recEive or Earth) lead; can be internal (INT) or external
(EXT).
Type of internal source for the E lead; either battery (-48 VDC) or ground
(GND).
Type of internal source for the M (transMit or Magnetic) lead; either battery
(-48 VDC) or ground (GND).
Normal state of the E lead; either grounded (ON) or open (OFF). Each card
port number is designated on the eight-position DIP switch. All eight switches
must be set to the same position (all ON or all OFF).
Table 1-2. Typical E&M Card Switch Settings
E&M Type
Direction
S1
S2
S3
Normal E&M*
Trunk**
II
Normal E&M*
Trunk**
IV
Normal E&M*
Trunk**
V
Normal E&M*
Trunk**
Factory Settings (default)
INT
INT
EXT
EXT
EXT
EXT
INT
INT
INT
GND
BAT
BAT
GND
GND
GND
GND
GND
GND
GND
BAT
GND
BAT
BAT
BAT
BAT
BAT
GND
I
S4 (all switches)
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
*Indicates that the port is attached to a device that generates signaling, such as a PBX.
**Indicates that the port is attached to a device that does not generate signaling, such as a
channel bank. In this case, the Integrated Access System emulates a PBX and generates
signaling. This configuration is also known as a Tandem E&M or Pulse Link Repeater (PLR)
application.
1.2.1.2
Installing the E&M 2W*8 Card
Insert the E&M 2W*8 card into any user card slot. These slots are U1 to U8 on the two-sided
chassis or the front-loading chassis with power supplies on top or P1 to P4 and W1-W4 on the
front-loading chassis with power supplies on the side. This card allows you to connect the
system to eight 2-wire voice circuits with E&M signaling.
Voice Cards
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E&M
Card
User Screens and Settings
1.2.2
Model
E&M
CardNo.
E&M 4W*8 ER Card Description (811960)
The E&M 4W*8 ER card provides an extended transmit TLP range (-17.5 to +14.5 dB) for
dedicated 4-wire modem applications. This range is required for data speeds of 19.2 kbps and
higher.
Notice!
UL STATEMENT
OPERATION OF THIS INTERFACE IS LIMITED TO INTRA-BUILDING
CONNECTIONS ONLY
1.2.2.1
Card Jumper/Switch Settings
The E&M 4W*8 card has four switches (S1 through S4) that you must set before inserting the
card into the chassis. These switches establish the type of E&M the card will use on all eight
ports. Figure 1-1 shows these switches, Table 1-1 defines their purposes, and Table 1-2 lists
the settings for each signaling type.
1.2.2.2
Installing the E&M 4W*8 ER Card
Insert the E&M 4W*8 card into any user card slot. These slots are U1 to U8 on the two-sided
chassis or the front-loading chassis with power supplies on top or P1 to P4 and W1-W4 on the
front-loading chassis with power supplies on the side. This card allows you to connect the
system to eight 4-wire voice circuits with E&M signaling.
1.3
E&M Card User Screens and Settings
1.3.1
E&M Card Main Screen
You must configure the E&M card for operation after installing it in the system chassis. This
is done from the E&M Main Card Screen, which is shown in Figure 1-2. To go to that screen,
highlight the desired card on the System Main Screen, then press <Enter>. The E&M Card
Main Screen shows numerous columns of settings, each for one port of the card.
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E&M Card
E&M Card User Screens and Settings
Figure 1-2. Typical E&M Card Main Screen
The bottom highlighted line of this screen shows various actions that you can perform from
this screen. You perform the desired action by pressing the associated uppercase letter key.
Table 1-3 summarizes these actions. For example, after you configure the E&M card ports,
press “s” to save your settings.
Table 1-3. Main Screen Actions
Action
Save
Undo
Refresh
Copy
Test
Main
Voice Cards
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status).
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and wants to repeat those changes in
subsequent columns.
Goes to the Test Screen, from which you can test the E&M card ports. Refer
to the Test section of this chapter.
Returns to the System Main Screen. If you make changes to settings and do
not save them, you will be prompted to save or lose changes.
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E&M
CardNo.
Running
Head
E&M
Card
User Screens and Settings
Table 1-4 summarizes the configuration settings for the E&M card, along with the available
and factory-default option settings. The parameters and settings are also described in the
following paragraphs.
Table 1-4. Main Screen Option Settings and Defaults
Parameter
STATE
WAN/SRV
TS
MODE
R2 TYPE
Rx TLP
Tx TLP
CODING
TC CGA
LB
PATTRN
HYBRID
SIG CONV
RATE
ADPCM
User Options
stdby actv
none wan serv user
01-24 01-31
e&m to e&mR2 R2mod
n/a (when MODE is set to e&mR2 or R2mod the default is s1-1)
-16.3 dB to +7.5 dB
-16.3 dB to +7.5 dB
u-law a-law a-inv
idle busy
off dgtl anlg
none D-mW quiet
n/a set1 to set8 user
off on
64K 24K,1 32K,1 40K,1 24K,2 32K,2 40K,2
n/a P1 P2 P3
Notes
1
2
3
4
5
Default
stdby
w1-1
01
e&m
n/a
0
0
u-law
idle
off
none
n/a
off
64K
n/a
Notes:
1. Choosing wan allows you to choose a WAN port (w1-1 through w4-2). Choosing serv
lets you choose an ATM or FRS server card in slot P1, P2, or P3, followed by a logical
port on that card. The user option is not used. See the WAN/SRV paragraph that
follows.
2. Time slot 16 is not available if the port is assigned to an E1 WAN link whose time slot
16 is programmed for cas or ccs.
3. The default is sl-1 if the Mode is set to e&mR2 or R2mod.
4. The extended setting range for the 8119 card is from -16.3 to +7.5 dB.
5. The default coding is a-inv for E1 and u-law for T1.
Choosing a Rate other than 64K allows you to select an ADPCM slot.
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set this field to stdby (standby) for ports that will not be
used or that are not yet configured. Or, set it to actv (active) for ports that are ready for use.
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E&M Card
E&M Card User Screens and Settings
WAN/SRV
The WAN/SRV setting identifies the WAN link or server card assigned to this port. If you
choose wan, you also must select the desired port (w1-1 through w4-2) of a WAN card for
transmission over a T1 or E1 link. Or, choose serv to assign the card port to a server card in
the system. This can be an ATM or FRS card, which resides in chassis slot P1, P2, or P3. You
must then choose a logical port on that card. The user option is not used.
It is not necessary to assign all ports of the same E&M card to the same WAN link or server
card, or to contiguous time slots on a WAN link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. This
value is from 1 to 24 for T1 links and 1 to 31 for E1 links. However, time slot 16 is not
available for E1 links that are programmed for CAS or CCS signaling. For a display of
available time slots, refer to the cross-connect map for the WAN link selected.
MODE
The Mode setting specifies whether or not a port uses E&M signaling, or if it operates in the
Transmission-Only (TO) mode. Use the to mode if you are connecting the port to a four-wire,
dedicated-line modem that does not require E&M signaling. The signaling type for all eight
ports of an E&M card is defined by setting hardware switches S1 through S4 as described
earlier in this chapter. Select e&m for standard Type I, II, IV, or V signaling. Select e&mR2
for symmetrical R2 signaling for calls originating from either the digital or analog side. The
R2mod setting provides modified R2 signaling for Motorola paging terminal equipment.
R2 TYPE
The R2 Type setting is set to n/a when the Mode is set to e&m or to. The signaling type for
all eight E&M ports is established by setting hardware switches S1 through S4 as described
earlier. If the Mode selected for the port is e&mR2 or R2mod, the R2 Type automatically
defaults to sl-1.
Rx TLP
The Receive Transmission Level Point (TLP) setting controls the amount of gain or loss added
to a signal after it is decoded to analog. To increase the signal level, set the Rx TLP field to a
positive number (i.e., the larger the number, the more gain is added). To decrease the signal
level, set the Rx TLP field to a negative number (i.e., the more negative the number, the more
the signal level is decreased). For example, an incoming signal at -5 dBm can be increased to
-2 dBm by setting Rx TLP to +3 dB. The Rx TLP range is -16.3 dB to +7.5 dB.
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Tx TLP
The Transmit TLP setting controls the amount of gain or loss added to the voice signal coming
in from the local CPE before it is encoded to digital PCM. To increase the incoming signal
level, set the Tx TLP field to a negative value (i.e., the more negative the number, the more
gain is added). To decrease the signal level, set the Tx TLP setting to a positive number (i.e.,
the more positive the number, the more the signal level is decreased). For example, an
incoming signal at -16 dBm can be increased to 0 dBm by setting Tx TLP to -16 dB. For the
E&M 4W*8 Card, the Tx TLP range is -16.5 dB to +7.3 dB. For the E&M 4W*8 ER E&M
Card, this range is -17.5 dB to +14.5 dB.
CODING
The Coding field sets the PCM companding (coding) method used for a port. Generally, the
North American T1 environment uses u-law (mu-law) coding, and the International E1
environment uses either a-law or a-inv (inverted A-law) coding. The a-inv setting provides a
higher ones density on an E1 line than a-law. The coding default setting is defined by the type
of associated WAN card.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the E&M card
port should be placed in the idle or busy mode upon declaration of a Carrier Group Alarm
(CGA) on the WAN link to which the port is assigned. The TC CGA setting has no effect on
Transmission-Only circuits, for which the to signaling mode is used.
In most cases, you should set this parameter to busy. If a call is in progress when the CGA
alarm is received, the system holds the call for two seconds, drops it, and then busies out the
port to the attached PBX for the duration of the alarm. Once the alarm clears, the system
automatically places the port back in the idle mode, thereby making it available to the attached
PBX.
LB
The LB setting allows you to loop a port back toward the network and far end for testing and
troubleshooting. Figure 1-3 shows the available loopbacks. The dgtl (digital) loopback sends
the incoming digital signal from the network back toward the far end, without decoding it. The
anlg (analog) loopback sends the decoded analog signal back to the far end. To disable either
loopback after testing, set this field to off.
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E&M Card
E&M Card User Screens and Settings
E&M Card
Codec
Analog
Loopback
Digital
Loopback
Digital-to-Analog
Convertor
PCM Bus
T1/E1
Network
DS-0
Figure 1-3. E&M Card Loopbacks
PATTRN
The Pattern is the outgoing test pattern to be sent to the selected port by the system. You can
send a different pattern to each port. The none setting disables the test pattern. The D-mW
(Digital milliwatt) option sends a 1 kHz tone at 0.0 dBm. The setting of the Rx TLP field
adjusts the D-mW signal level before sending the signal to the CPE. The quiet option places
a 600-ohm termination on the line so that no analog signal is sent (idle mode).
HYBRID
Available for the two-wire 8108 E&M card only, the Hybrid option assigns a three byte pattern
to define the adjustment for return loss (similar to Build Out Capacitors). The default, set1,
balances to the ideal termination of 900Ω @ 2.15mF. The other settings are reserved for future
use.
SIG CONV
The Signaling Conversion parameter allows you to change the transmit ABCD signaling bits
from ITU (E1) to ANSI (T1) standards. This conversion is completed regardless of the
associated type of WAN (CSU/DSX or CEPT).
Select off if ANSI signaling is used, or select on to convert the transmit signaling from ANSI
to ITU according to the Interface Card Conversion Table for E&M signaling. This setting also
converts the receive signaling from ITU to ANSI format.
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RATE
The Rate parameter allows you to use the voice compression capabilities of an ADPCM card.
If that card is not present in the system, the Rate is set to 64k and cannot be changed. The 64k
setting (default) is the normal encoding/decoding rate for voice circuits.
ADPCM voice channels are assigned in pairs by designating two voice ports (E&M, FXO or
FXS) to the same WAN link and time slot, and then selecting rate settings for the pair that add
up to 64 kbps. The following pairing combinations are possible:
24K,1+40K,2 (24 kb coding on one side of the time slot and 40 kb coding on the other side of
the same time slot)
32K,1+32K,2 (32 kb encoding on each side of a time slot)
40K,1+24K,2 (40 kb coding on one side of the time slot and 24 kb coding on the other side)
Number 1 after the rate setting assigns that portion of the voice port pair to the odd side of the
ADPCM pair. Number 2 after the rate setting assigns that portion of the voice port pair to the
even side of the ADPCM pair.
For more information about voice port assignments to a time slot and ADPCM card.
ADPCM
The ADPCM parameter lets you assign the current port to an ADPCM card in the system. The
default setting is n/a and only changes when a Rate smaller than 64k is selected (see above).
You can then select which ADPCM card to use for the port (this assignment is made by chassis
slot number). The options are slots P1, P2, and P3.
1.3.2
Test Screen
The Test Screen (Figure 1-4) facilitates testing and maintenance by allowing you to monitor
and set the status of the analog signals and/or the A, B, C, and D signaling bits of all E&M
circuits on the card. In cross-connect systems, the test option can also send test patterns and
tones towards the CPE and network sides of the system.
The Test Screen also shows the signaling type assigned to the card via the switch settings
described earlier.
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E&M Card
E&M Card User Screens and Settings
Figure 1-4. Typical E&M Card Test Screen
Table 1-6 lists various operations you can perform from this screen. These appear in the
bottom highlighted line of the Test Screen.
Table 1-5. Test Screen Actions
Action
Save
Undo
Refresh
Copy
Main
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status).
Copies the settings of one port to another port that requires the same
settings.
Returns to the E&M Card Main Screen. If changes are made to settings
and not saved, you will be prompted to save or lose changes.
Table 1-6 summarizes the available test parameters and option settings. The following
paragraphs also describe these parameters and settings in detail.
Table 1-6. Test Screen Option Settings and Defaults
Parameter
Voice Cards
User Options
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TEST
Tx ABCD
Rx ABCD
E-lead
TO USER
TO NTWK
Tx ABCD
Rx ABCD
E-lead
M-lead
MODE
STATUS
off on
mon set
mon set
mon set
PCM 300Hz 1kHz 3kHz quiet
PCM 300Hz 1kHz 3kHz quiet
Status information only; not user-editable
Status information only; not user-editable
Status information only; not user-editable
Status information only; not user-editable
Status information only; not user-editable
Status information only; not user-editable
Model
E&M
CardNo.
off
mon
mon
mon
PCM
PCM
n/a
n/a
n/a
n/a
n/a
n/a
SIG MON
The Signaling Monitor feature works with the user card alarm system to detect excessive
signaling bit transitions. The system will generate alarms if the number of transitions of any
signaling bit in transmit or receive direction for an active port exceeds 255 in any four second
interval. The options are off and on, and they are toggled by pressing “g”.
TEST
The Test parameter shows if the port is in test mode or not. Inactive ports and ports that are
assigned to inactive WANs will show a test status of n/a. The test status options for active
ports are off and on.
Tx ABCD
The Transmit ABCD setting allows you to either monitor the status of the ABCD signaling
bits being transmitted towards the network or set a specific ABCD pattern for testing the
transmit side of the circuit. The options for this field are mon (monitor) or set. Choosing set
will bring up a four digit field for users to input the ABCD pattern they want to transmit. Any
four digit combination of ones and zeros is acceptable for this setting.
Rx ABCD
The Receive ABCD setting allows users either to monitor the status of the ABCD signaling
bits being received from the network or to set a specific ABCD pattern for testing the receive
side of the circuit.
The options for this field are mon (monitor) or set. Choosing set will bring up a four-digit field
for you to specify the ABCD pattern you want to receive. Any four digit combination of ones
and zeros is acceptable in this field. The Rx ABCD bits cannot be set in bus-connect systems
and the only option is mon (monitor).
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E&M Card User Screens and Settings
E LEAD
The E-lead setting allows you to either monitor or set the E-lead state. The options for this
field are mon (monitor) or set. Choosing set will bring up the options off (which drops the E
lead) and on (which raises the E lead).
TO USER
In cross-connect systems only, the To User parameter allows you to break the circuit and send
a test tone toward the user side of the system. The options for this field are PCM, 300Hz, 1
kHz, 3 kHz and quiet. Selecting PCM causes the PCM signal received from the network to
continue to be sent to the user port in the normal manner.
This parameter is not supported in bus-connect systems and will always appear as n/a.
TO NTWK
In cross-connect systems only, the To Network parameter allows you to break the circuit and
send a test tone toward the network side of the system. The options for this field are PCM,
300Hz, 1 kHz, 3 kHz and quiet. Selecting PCM causes the PCM signal received from the
user port to continue to be sent to the network in the normal manner.
This parameter is not supported in bus-connect systems and will always appear as n/a.
Tx ABCD
The Transmit ABCD information field shows the current values of the ABCD bits that are
being transmitted to the network. If TX ABCD in the top half of the screen is changed via the
set function mentioned above, and the settings are saved by the Save command in the Test
Screen, the new bit pattern chosen will be reflected here.
Rx ABCD
The Receive ABCD information field shows the current values of the ABCD signaling bits
that are received from the network. If RX ABCD in the top half of the screen is changed via
the set function mentioned above, and the settings are saved by the Save command in the Test
Screen, the new bit pattern chosen will be reflected here.
E-Lead
The E-lead information field shows the current status of the E-lead of this port. The settings
are either on or off.
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M-Lead
The M-lead information field shows the current status of the M-lead of this port. The settings
are either on or off.
MODE
The Mode informational field shows the current mode of the port that was selected on the main
E&M card screen. Valid settings are e&m, to, e&mR2, and R2mod.
STATUS
The Status information field shows the current status of the port. Table 1-7 describes the
conditions reported by this field.
Table 1-7. Status Information Field Settings
Setting
stdby
W stb
W tst
W OOS
noWAN
OOS
call
busy
idle
TC
test
maint
Meaning
The E&M port is in standby.
The WAN card to which the E&M port is assigned is in standby.
The WAN card to which the E&M port is assigned is under test.
The WAN card to which the E&M port is assigned is Out Of Service.
No WAN card is configured in the slot to which the E&M port is assigned.
The E&M card is out of service.
Call set-up is in progress.
Call is in progress.
No call is in progress; circuit is available.
The E&M circuit is undergoing Trunk Conditioning because a CGA alarm
is in progress on the associated WAN port.
The port is under test (i.e., you are actively controlling the circuit by setting
values for Tx ABCD, Rx ABCD, or E-lead).
Maint is a status that tells that a specific port is under maintenance.
E&M Signaling Type
This field shows the card’s current on-board switch settings, which define the type of E&M
signaling used on each port. If necessary, remove the card and reset the switches as previously
described until the desired signaling type appears in the screen. The E&M Signaling types are
I, II, IV, and V, followed by a "-t" if the card is optioned to provide trunk signaling.
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1.3.3
E&M Card User Screens and Settings
Loopback Screen
The Loopback (Figure 1-5) facilitates loopback detection by allowing the user to
enable/disable automatic time out and also get the loopback status of the channel. This feature
will provide the digital loopback (both audio and signaling) when activated by a 2713 Hz tone
level and duration. When a validated tone is detected the channel disconnects the user and
provides loopback of signals received from the network. This loopback is performed at “equal
level” without inserting any gain or loss in the path. In addition a “make busy” signal is be
applied toward the user. Table 1-8 shows the Loopback screen of actions.
Figure 1-5. Typical E&M Loopback Screen
Table 1-8. Loopback Screen of Actions
Action
Save
Undo
Refresh
Main
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., loopback status).
Returns to the E&M Card Main Screen. If changes are made to settings
and not saved, you will be prompted to save or lose changes.
Table 1-9 summarizes the available loopback parameters and option settings. The following
paragraphs also describe these parameters and settings in detail.
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Error Messages
Table 1-9. Loopback Screen Option Settings and Defaults
Parameter
LB DET
LB STAT
User Options
w/to on off
This is information only - no user input is allowed
Default
w/to
LB DET
The user can either enable or disable the loopback detection. The options available are w/to,
on and off. The w/to option indicates the loopback detection is ON and 20 minute timeout is
enabled. The on option indicates the loopback detection is ON and timeout is disabled. The
off option is used for loopback detection is disabled. The default setting is w/to.
LB STAT
This is information only - no user input is allowed. This tells the user if a particular port is in
loopback state or not.
1.4
E&M Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
1.4.1
E&M Card Troubleshooting
The E&M card may be faulty if a voice signal is not received at one end of a circuit, or if E&M
signaling is not detected. The following are possible causes:
•
Faulty receiving CPE at the near end (where the problem was first noticed)
•
Faulty transmitting CPE at the far (opposite) end
•
Faulty cabling between the CPE and E&M card at either end
•
Faulty E&M card at either end
•
T1 or E1 network failure
•
Improper card configuration at either end (e.g., time slot and/or WAN assignments)
First, verify that the T1 or E1 network has not failed. Check for a CGA-Red alarm on the
associated WAN port at the end where the incoming VF signal loss is first noticed. The CGA
indicates that the incoming network signal was lost (or that the receiving WAN port is out of
frame). During the CGA, all voice ports with time slots on that WAN port will also be
disabled, and the associated far-end WAN port will be in a CGA-Yellow alarm state. If the
network is faulty, you must clear that trouble to restore your circuits.
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E&M Card Specifications
If the network is okay, verify that the proper WAN ports and time slots are assigned to the
associated E&M voice ports at both ends, as previously outlined in this chapter. In a
point-to-point network, the near-end and far-end E&M ports should both be assigned the same
WAN port and time slot number. Also make sure the other parameters (such as the transmit
and receive TLPs) are set properly at both ends.
If the E&M card port parameters are correct at both ends, and if the network is okay, the
trouble is isolated to the E&M card or the associated port. Proceed as follows:
1. At the far end, activate an analog loopback on the E&M card port.
2. Send a 0 dBm (digital milliwatt) test signal toward the CPE at that end. That signal will
be substituted for the normal signal coming from the far-end CPE; it will be sent back
to the CPE at your end via the loopback path.
3. Check your CPE for this signal. If it is present, the far-end CPE or cabling to the far-end
E&M card is probably faulty. Disable the loopback and test signal there, and fix the
problem. If you still don’t receive a signal, go to step 4.
4. At your end, go to the E&M Card’s Main Screen and send a digital milliwatt test tone
(0 dBm) toward the CPE. If you still don’t receive a signal, check the cabling from the
E&M card to your CPE, and check the CPE itself. If those items are okay, replace the
E&M card at your end.
5. If the E&M card is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.
1.5
E&M Card Specifications
E&M Cards (810860, and 811960)
Physical Interface (Models 810860
and 811960)
Number of Ports
Connectors
8
1 female 50-pin telco connector
Transmission Performance
Performance
Exceeds requirements of ITU-T G.712 (4-wire) and IT-T G.713 (2-wire)
Signaling
Signaling Types
Signal Modes
Voice Cards
Switch selectable per card
Types I, II, IV and V
Normal (toward user) and Trunk/Tandem (toward CO)
Software selectable per port
Transmit Only (to)
Standard Type I, II, IV or V E&M (e&m)
Symmetrical R2 signaling (e&mr2)
Modified R2 (r2mod)
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Specifications
VF Transmission Characteristics
Nominal Transmit TLP
Software selectable
Model 810860 -16.5 dB to +7.3 dB in steps of 0.1 dB
Model 811960 -17.5 dB to +14.5 dB in steps of 0.1 dB
Software selectable
All Models -16.3 dB to +7.5 dB in steps of 0.1 dB
with 2.16 µf capacitor in series 600 Ohms
Software selectable
µ-law
A-law
A-law bit inverted
Nominal Receive TLP
Termination Impedance
PCM Encoding
Attenuation Versus Frequency as per AT&T TR43801 - Relative to 1 kHz with 0 dBm0 input
Frequency
200 Hz
300 to 3000 Hz
3200 Hz
3400 Hz
Transmit (A to D)
-0.25 to +3.0 dB
-0.25 to +0.5 dB
0.25 to +0.75 dB
-0.25 to +1.5 dB
Return Loss
Model 810860 2-wire
Model 811960 4-wire
4W Return Loss (at 1 kHz)
2W Return Loss (at 1 kHz)
Receive (D to A)
-0.25 to +2.0 dB
-0.25 to +0.5 dB
-0.25 to +0.75 dB
-0.25 to +1.5 dB
Against 600 Ohms, in series with 2.6 µf with additional 25 Ohms
resistor between the channel unit and the return loss measurement set.
Echo 28dB min.
Singing 20dB min.
1kHz 28dB min.
300 to 3000 Hz 23dB min.
>20dB Typ > 27dB
>15dB Typ> 20dB
Against 600 Ohms, in series with 2.16 µf termination.
Echo 34dB
Singing 20dB
Idle Channel Noise (rcv and xmt)
< -65Bm0p. Typically < -70 dBm0p or < 20 dBrnc0 <20dBBrnc0
Interchannel Crosstalk
Typ < -75 dBm0 using 7 adjacent channels being distributed with a
signal of 0.0 dBm0.
Total Distortion including Quantization (Signal to Distortion Ratio) Input Frequencies 1004-1020 Hz
Input Level
Rcv or Xmt
Overall
-30 to 0 dBm0
>35 dB
>33.9 dB
>27.6 dB
-40 dBm0
>20 dB
-45 dBm0
>25dB
>23 dB
Relative Transhybrid Loss
Model 810860
Absolute group delay
Group Delay Distortion vs. frequency
Longitudinal Balance
Variation of Gain with Input Level
< 600 microseconds
within boundaries of ITU-T Rec. G.712 Figure 2
>46 dB Typ > 50 dB
within boundaries of ITU-T Rec. G.713 Figure 7 (2 wire)
within boundaries of ITU-T Rec. G.712 Figure 7 (4 wire)
Typical gain variation is within + 0.25 dB from +3 to -50 dBm0
Diagnostic Capabilities
Diagnostics
1-18
Analog loopback
Digital loopback
“Make Busy” signaling control
IMACS System Release 5.1.9
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E&M Card
E&M Card Specifications
Standards Compatibility
Bell System
ITU-T
FCC Rules and Regulations
Voice Cards
TR43801
Recommendations G.711, G.712 and G.714
Part 68, and Part 15 - Subpart J
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FXS Card
Introduction
Chapter 2
FXS Card
2.1
Introduction
This chapter provides connector pinout, configuration, and troubleshooting information for
the Foreign Exchange - Station (FXS) Voice Cards. These are labeled as the FXS 2W*4-6 and
FXS 2W*8-6 cards on their faceplate ejectors.
These cards manage the flow of FXS voice traffic over the network. Each card encodes analog
(voice, VF) signals to a digital bitstream at the local system for transmission over a T1 or E1
network. It also decodes the digital signals to analog at the remote system.
Each FXS card has two-wires interfaces that support FXS, Private Line Automatic Ringdown
(PLAR), Foreign Exchange Station Defined Network (FXSDN), Dial-Pulse Originating
(DPO), and Wink-start operations. The FXS cards also can use the voice-compression features
of an ADPCM card.
Host code 5.1.6 adds the Answer Supervision function to both the loop start and ground start
signal options. The new states (which are now combined with forward disconnect) are:
•
FXS loop start forward disconnect and answer supervision (lp-fa)
•
FXS ground start forward disconnect and answer supervision (gs-fa)
•
FXS ground start forward disconnect (gs-fd)
Answer Supervision (AS) is a supplemental feature available for analog voice-grade
switched-access lines that use loop-start signaling or ground-start signaling. When the Answer
Supervision feature is available, an originating call from a Customer Installation (CI) (or
Customer's Premises) receives an electrical signal indicating that the terminating (called) CI
has answered. The AS signal is a polarity reversal of the voltage that the network applies
between the tip conductor and the ring conductor at the Network Interface. The most common
application of AS is to determine if and when the called party has answered the phone for
billing purposes.
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2.2
FXS Card Descriptions
2.2.1
FXS 2W*8-6 Card Description (812960)
The FXS 2W*8-6 Card has eight ports and provides a 600-ohm terminating impedance on
each port. All FXS features are supported by this card.
2.2.1.1
Card Jumper/Switch Settings
The FXS 2W*8-6 Card has two sets of jumpers on the motherboard. The jumper JP1
(US/EUR) has two settings. One set is for US domestic applications and the other is for
European applications. The default position is U.S.
JP2 (LL/SL) has two settings. One position should be set to SL (Short Loop) for loops not
exceeding 700 Ohms, and the other position should be set to LL (Long Loop) for loops
comprised between 700 and 1800 Ohms. The default position is LL.
Note:
2-2
Tip to Ring voltage on short loop option is -33 volts, while the long loop option is -48
volts.
IMACS System Release 5.1.9
Server Cards
FXS Card
FXS Card Descriptions
FXS
2W 8*6
JP1
US/Euro
(J1 Jumper)
JP2
SL(Short Loop)
LL(Long Loop)
P
1
US/Euro jumper settings
Figure 2-1. FXS 2W*8-6 Card Jumpers Settings
2.2.1.2
Installing the Card
Install the FXS 2W*8-6 Card in any user card slot. These slots are U1 to U8 on the two-sided
chassis and front-loading chassis with power supplies on top, or P1 to P4 and W1 to W4 on
the front-loading chassis with power supplies on the side.
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2.3
FXS Card User Screens and Settings
2.3.1
FXS Card Main Screen
You must configure the FXS card for operation after installing it into the system chassis. This
is done from the FXS Card Main Screen (see Figure 2-2). To go to that screen, highlight the
desired card in the System Main Screen and press <Enter>. This screen shows one
configuration column for each port on the card.
Figure 2-2. Typical FXS Card Main Screen
The bottom highlighted line of this screen shows various actions that you can perform from
this screen. You perform the desired action by pressing the associated uppercase letter key.
Table 2-1 summarizes these actions. For example, after you configure the FXS card ports,
press “s” to save your settings.
Table 2-1. Main Screen Actions
Action
Save
Undo
Refresh
2-4
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status).
IMACS System Release 5.1.9
Server Cards
FXS Card
Copy
Test
Dial
Main
FXS Card User Screens and Settings
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
Initiates and monitors testing of all FXS card ports. Refer to the Test section of
this chapter.
Primary or Hunt Group telephone number entry menu.
Returns to the System Main Screen. If changes are made to settings and not
saved, you will be prompted to either save or lose your changes.
Table 2-2 summarizes the configuration settings for the FXS cards, along with the available
and factory-default option settings. The parameters and settings are also described in the
following paragraphs.
Table 2-2. Main Screen Option Settings and Defaults
Parameter
STATE
WAN/SRV
TS
MODE
TYPE
Rx TLP
Tx TLP
CODING
TC CGA
LB
PATTERN
HYBRID
RINGBK
SIG CONV
RATE
ADPCM
ISDN CON
User Options
stdby actv
none wan serv user
01-24 01-31
fxs fxsdn wink plar dpo slc96
loop lp-fa lp-fd gs gs-fa gs-fd gs-i gs-a
1s-R2 1sR2e R1.5i R1.50 sp
-10.0 dB to +2.0 dB
-10.0 dB to +5.0 dB
u-law a-law a-inv
idle busy
off dgtl anlg
none D-mW quiet
set1 to set8 user
off on
off on
64K 24K,1 32K,1 40K,1 24K,2 32K,2
40K,2
n/a P1 P2 P3
off on
Notes
1
2
3
4
5
6
Default
stdby
w1-1
01
fxs
loop
0.0
0.0
u-law
idle
off
none
set1
off
off
64K
n/a
off
Note:
1. Choosing wan allows you to choose a WAN port (w1-1 through w4-2). Choosing serv lets
you choose an FRS server card in slot P1, P2, or P3, followed by a logical port on that
card. If your system has the FRS card installed and you want to use voice compression you
need to install the Low Bit Rate Voice (LBRV) card. The user option is not used. See the
WAN/SRV paragraph that follows.
2. Time slot 16 is not available if the port is assigned to an E1 WAN link whose time slot 16
is programmed for CAS or CCS.
3. These options are only valid if the Mode is set to fxs. If the Mode is fxsdn, the Type
options are the same as above with the addition of fgd, boa, and lp-sr. If the Mode is plar,
the Type options are d3 or d4. If the Mode is dpo, the Type setting will automatically
default to dpo. If the Mode is wink, the Type options are loop, lp-fd, gs, gs-i, and gs-a.
Voice Cards
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Model
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CardNo.
4. The default is a-inv for E1 and µ-law for T1. These values will change depending upon
the WAN link selected.
5. The default (set1) is the only active option. It balances to the ideal termination of 600
ohms + 2.15 uF. The other settings are reserved for future use.
6. Choosing a Rate other than 64K allows you to select an ADPCM.
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the State setting to stdby (standby) for ports that are
not to be used or that have not yet been configured. Set it to actv (active) for ports that are
ready for use.
WAN/SRV
The WAN/SRV setting identifies the WAN link or server card assigned to this port. If you
choose wan, you also must select the desired port (w1-1 through w4-2) of a WAN card for
transmission over a T1 or E1 link. Or, choose serv to assign the card port to a server card in
the system. This is an FRS card, which resides in chassis slot P1, P2, or P3. You must then
choose a logical port on that card. The user option is not used.
It is not necessary to assign all ports of the same FXS card to the same WAN link or server
card, or to contiguous time slots on a WAN link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. Values
range from 1 to 24 for T1 links and 1 to 31 for E1 links. Time slot 16 is not available on E1
links that are programmed for cas or ccs signaling. For a display of the available time slots,
refer to the cross-connect map for the WAN link; see Chapter 4, System Configuration and
Operation in the System Reference Guide for information about viewing cross-connect maps.
MODE
The Mode setting should be determined by the type of equipment to which the user is
connecting the port. All options use two-wire balanced connections. The fxs (Foreign
Exchange Station) option allows users to connect the system to a two-way (both inbound and
outbound calls) PBX trunk or a key system trunk. The system requires a ringing generator for
this option. The fxsdn (Foreign Exchange Station-Defined Network) option provides access
to new services offered by advanced networks from many major carriers. The system requires
a ringing generator for this option. The wink option uses the same type of signaling as fxsdn
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FXS Card
FXS Card User Screens and Settings
and provides a 150-millisecond delay, then a 200-millisecond "wink" back to the central office
when the FXS card sees an off-hook condition from the central office. The system requires a
ringing generator for this option.
The plar (private line automatic ringdown) option provides point-to-point unswitched
connections between two telephone sets. This configuration is usually not attached to an
exchange or switch; rather it provides a “hot line” between two locations. The unit requires a
ringing generator for this option.
The dpo (Dial Pulse Originating) option allows the unit to attach to out-going one-way trunks
from a PBX, key system, or a telephone set. This option is very similar to the fxs option;
however, the system does not require a ringing generator.
The slc96 (Subscriber Loop Carrier 96) option connects the card to one-way outgoing trunks
from a PBX, CENTREX, key system, or telephone set to an SLC channel. The slc96 mode
also must be active on the associated WAN card.
TYPE
The Type setting matches the signaling behavior of the FXS equipment to the remote switch.
Use the loop (loop-start) option with POTS stations and simple PBX trunks. Use the lp-fd
(loop-start with Forward Disconnect) option when connecting to automated answering
equipment. Use the gs (ground-start) option with two-way PBX trunks. This setting helps
prevent glaring and call collisions. Use gs-i (ground-start immediate) for equipment requiring
a fast response time to the station or PBX. Use gs-a (ground-start automatic) for equipment
requiring fast-response time to the central office. Use ls-R2 for CCITT signaling used
internationally (immediate R2) which provides immediate seizure acknowledgment to the
network. Your selection must match the behavior of both the station equipment and remote
central office or PBX.
Use lp-fa or gs-fa when Answer Supervision is required. The selection of Answer Supervision
will always use Forward Disconnect. The Forward Disconnect option can also be used without
Answer Supervision in both loop and ground start modes (lp-fd and gs-fd).
The lsR2e R2 Signaling for Ericsson switch for incoming and outgoing call modes. The tables
below represent FXS ls-R23 signaling modes.
FXS-LS-R2E Office Originate - Incoming Calls (ls-R2e)
In this case, RxAB is Forward signaling. TxAB is Backward signaling. See Table 2-3.
Table 2-3. Incoming Calls (ls-R2e)
State
Idle/Released
Seized
Seizure Ack
Voice Cards
T/R Stat
T/R Cntl
Open
TgRb
Open
Ringer
Open or Loop
TxAB
10
10
10
RxAB
10
00*
00
IMACS System Release 5.1.9
Note
Ringer 2s on, 4s off
N/A
2-7
Model
FXS
CardNo.
Running
FXS
CardHead
User Screens and Settings
Answered
Loop*
TbRb
00
00
Clear Forward
Idle/Released
Loop
Open*
TgRb
TgRb
00
10
10*
10
Clear Back
Idle/Released
Open*
Open
TgRb
TgRb
10
10
00
10*
Blocked
Open or Loop
11
10
No action
N/A
FXS-LS-R2E Station Originate - Outgoing Calls (ls-R2e)
In this case, RxAB is forward signaling, RxAB is Backward signaling. See Table 2-4.
Table 2-4. Outgoing Calls (ls-R2e)
State
T/R Stat
T/R Cntl
TxAB
RxAB
Note
Idle/Released
Seized
Seizure Ack.
Answered
Open
Loop*
Loop
Loop
TgRb
TgRb
TgRb
TbRg
10
00
00
00
10
10
10
00*
Clear Forward
Idle/Released
Open*
Open
TbRg
TgRb
10
10
00
10*
Clear Bcak
Idle/Released
Loop
Open*
TgRb
TgRb
00
10
10*
10
Battery Normal
10
11
N/A
Blocked
N/A
Battery Reversal
The R1.5 Signaling is a special state machine for Russia to support R1.5 signaling. The IDLE
signaling is asymmetrical which means that the state machines have to distinguish the
direction of a call. Therefore there are different modes for incoming and outgoing calls that
can be used for a call in one direction.
The two new types are supported in FXS Mode only and the types are R1.5i and R1.5o. R1.5i
is for incoming calls (Office Originate) and R1.5o is for outgoing calls (Station Originate).
The following tables below represent the FXS R1.5i and R1.5o signaling.
FXS-LS-R1.5 Office Originate - Incoming Calls (R1.5i)
In this case calls can only be originated from the network (incoming calls) RxAB is Forward
signaling. TxAB is Backward signaling. See Table 2-5.
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FXS Card
FXS Card User Screens and Settings
Table 2-5. Incoming Calls (R1.5i)
State
Idle/Released
Seized
SeizureAck
Answered
Clear Forward
Released
Idle
Clear Back
Idle/Release
Blocked
T/R Stat
T/R Cntl
Open
Open
Open or Loop
Loop*
Loop
Open*
Open
Open*
Open
Open or Loop
TgRb
Ringer
TgRb
TgRb
TgRb
TgRb
TgRb
TxAB
01
01
11*
10
10
00
01
00
01
11*
RxAB
11
10*
10
10
11 or 00*
11
11
10
11*
11
Note
Ringer 2s on, 4s off
Automatic Ack. (200ms min)
For 200 ms
Automatic in 200 ms
Test mode
FXS-LS-R1.5 Station Originate - Outgoing Calls (R1.5o)
In this case calls can only be originated from the station or PBX ports (outgoing calls), TxAB
is Forward signaling, RxAB is Backward Signaling. See Table 2-6.
Table 2-6. Outgoing Calls (R1.5o)
State
T/R Stat
T/R Cntl
TxAB
Idle/Released
Seized
Seizure Ack.
Pulse Dial Break
Answered
Busy
Clear Forward
Clear Back
Idle/Released
Open
Loop*
Loop
Break*
Loop
Loop
Open*
Open
Open
TgRb
TgRb
TgRb
TgRb
TgRb
TgRb
TgRb
TgRb
TgRb
11
10
10
00
10
10
11
11
11
Clear Back
Clear Forward
Idle/Released
Blocked
Loop
Open*
Open*
TgRb
TgRb
TgRb
TgRb
10
11
11
11
RxAB
01
01
11*
11
10*
00*
10 or 00
00*
01 or 10 or
11*
00*
00
01*
11*
Note
CO Ack.
Optional
Optional
Blocked at CO
Use sp for Single Party signaling in an ESF (Extended SuperFrame) mode along with Feature
Group "D" high-speed modem services that requires special software. The choice of boa (bill
on answer) sends a signal back to the office when the customer answers the phone, to start
billing for the call. An additional choice of lp-sr (loop-start short ring) is the same as the loop
option except that the ringing time is 1 second ON and 2 seconds OFF instead of 2 seconds
ON and 4 seconds OFF (using existing option loop/lp-fd).
Voice Cards
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Model
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CardNo.
Selecting the plar option for the Mode of this port causes the system to offer d3 and d4, which
are the two common PLAR types. Both of these meet the pre-1988 and post-1988
specifications for PLAR circuits. If you select dpo as the Mode, the Type automatically
defaults to dpo.
If slc96 is selected for Mode, the two options supported are sp (single-party POTS) and uvg
(universal voice-grade).
CAUTION!
Before activating this port, verify the behavior expected by both the station equipment and
remote central office equipment, and be sure the systems are properly configured.
Rx TLP
The Receive Transmission Level Point (TLP) setting controls the amount of gain or loss added
to the incoming signal after it is decoded to analog. To increase the signal level, set the Rx TLP
setting to a positive value (i.e., the larger the number, the more gain is added). To decrease the
signal level, set the Rx TLP setting to a negative value (i.e., the more negative the number, the
more the signal level is decreased). For example, an incoming signal at -5 dBm can be
increased to -3 dBm by setting Rx TLP to +2 dB. The Rx TLP range is -10.0 dB to +2.0 dB.
Tx TLP
The Transmit TLP setting controls the amount of gain or loss added to a voice signal from the
CPE before it is encoded to digital PCM. To increase the signal level, set the Tx TLP setting
to a negative value (i.e., the more negative the number, the more gain is added). To decrease
the signal level, set the Tx TLP setting to a positive value (i.e., the more positive the number,
the more the signal level is decreased). For example, an incoming signal at -5 dBm can be
increased to -2 dBm by setting the Tx TLP to -3 dB. The Tx TLP range is -10.0 dB to +5.0 dB.
CODING
The Coding setting sets the PCM companding method used for a port. Generally, the North
American T1 environment uses m-law coding, and the International E1 environment uses
a-law or a-inv (inverted A-law) coding. The a-inv setting provides a higher ones density than
a-law. The default coding setting is determined by the type of associated WAN card.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the FXS port
should be forced idle or busy upon declaration of a Carrier Group Alarm (CGA) on the WAN
link to which the port is assigned. In most cases, you should set this parameter to busy. If a
call is in progress when the CGA alarm is received, the system will hold the call for two
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FXS Card
FXS Card User Screens and Settings
seconds, drop it, and then busy out the port to the attached PBX for the duration of the alarm.
Once the alarm clears, the system will automatically place the port back in the idle mode,
making it available to the PBX.
LB
The Loopback field lets you loop the port back toward the network and far end. The dgtl
(digital) loopback sends the incoming digital DS0 signal back to the far end without decoding
it. The anlg (analog) loopback sends the decoded analog signal back to the far end after
decoding and then re-encoding it. Figure 2-3 shows the loopback options, which allow you to
test and troubleshoot the FXS card. To disable a loopback, set this field to off.
FXS Card
Codec
Analog
Loopback
Digital
Loopback
Digital-to-Analog
Convertor
PCM Bus
T1/E1
Network
DS-0
Figure 2-3. FXS Card Loopbacks
PATTRN
The Pattern field selects an outgoing test pattern for the current card port. The test pattern is
generated by the system and sent to the selected port. You can select a different pattern for
each port. The none option disables the test pattern. The D-mW (Digital milliwatt) option
sends a 1 kHz tone at 0.0 dBm. The setting of the Rx TLP setting affects the D-mW signal
level. The quiet option places a 600-ohm termination on the line so that no analog signal is
sent (idle mode).
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CardNo.
HYBRID
The Hybrid option assigns a three byte pattern to define the adjustment for return loss (similar
to Build Out Capacitors). The default, set1, balances to the ideal termination of 600 ohms +
2.15 uF. The other settings are reserved for future use.
RINGBK
The ringback setting specifies whether a ringback tone is generated by the system and sent
towards the network. Turn this option off when the network service does not provide an
audible ringing tone to the calling party.
SIG CONV
The Signaling Conversion parameter allows you to change the transmit ABCD signaling bits
from CCITT (E1) to ANSI (T1) standards. This conversion is completed regardless of the type
of WAN card (CSU/DSX or CEPT) to which the FXS card is attached.
The options are off if ANSI signaling is used and on to convert transmit signaling from ANSI
to CCITT format according to the Interface Card Conversion Table for FXS signaling. This
setting also converts receive signaling from CCITT to ANSI.
RATE
The Rate parameter allows you to use the voice compression capabilities of an ADPCM card.
If that card is not present in the system, the Rate stays at 64k and cannot be changed. The 64k
option is the normal encoding/decoding rate for voice circuits.
ADPCM voice channels are assigned in pairs by designating two voice ports (E&M, FXO, or
FXS) to the same WAN link and time slot, and selecting rate settings for the pair that add up
to 64 kbps. The following combinations are possible:
•
24K,1+40K,2 (24 kb coding on one side of the time slot and 40 kb coding on the other
side of the same time slot)
•
32K,1+32K,2 (32 kb encoding on each side of a time slot)
•
40K,1+24K,2 (40 kb coding on one side of the time slot and 24 kb coding on the other
side)
Number 1 after the rate setting assigns that portion of the voice port pair to the odd side of the
ADPCM pair. Number 2 after the rate setting assigns that portion of the voice port pair to the
even side of the ADPCM pair.
The number 1 after the rate setting assigns that portion of the voice port pair to the odd side
of the ADPCM pair. The number 2 after the rate setting assigns that portion of the voice port
pair to the even side of the ADPCM pair.
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FXS Card User Screens and Settings
For more information about voice port assignments to the ADPCM card, please consult the
ADPCM section of the Server Card Reference Guide.
ADPCM
The ADPCM parameter lets the user choose which ADPCM card to place this E&M port. The
default setting is n/a and only changes when a Rate smaller than 64k is selected (see above).
The user is then allowed to select which ADPCM card to use for the port (this assignment is
made by chassis slot number). The options are slots P1, P2, and P3.
ISDN CON
The ISDN Connect parameter displays whether the ISDN connection is on or off. The default
setting is always off.
2.3.2
Test Screen
The Test option facilitates testing and maintenance by allowing you to monitor and set the
status of the analog interface leads, and to monitor or set the value of the A, B, C, and D
signaling bits of all FXS circuits on that card. In cross-connect systems, the test option also
allows you to apply test patterns and tones towards the user and network sides of the system.
Figure 2-4 shows the FXS Card Test Screen parameters, Table 2-7 lists some actions you can
perform from this screen, and Table 2-8 shows the settings for each parameter.
Voice Cards
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Model
FXS
CardNo.
Running
FXS
CardHead
User Screens and Settings
Figure 2-4. Typical FXS Card Test Screen
Table 2-7. Test Screen Actions
Action
Save
Undo
Refresh
Main
siGmon
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e. performance and test data).
Returns to the FXS Card Main Screen. If changes are made to settings and
not saved, you will be prompted to save or lose changes.
Used with the user card alarm system to notify you of excessive signaling bit
transitions.
Table 2-8. Test Screen Option Settings and Defaults
Parameter
SIG MON
TEST
Tx ABCD
Rx ABCD
T-R-CNTL
TO USER
TO NTWK
Tx ABCD
Rx ABCD
T-R-CNTL
2-14
User Options
off on
off on
mon set
mon set
mon set
PCM 300Hz 1kHz 3kHz quiet
PCM 300Hz 1kHz 3kHz quiet
Status information only; not editable
Status information only; not editable
Status information only; not editable
IMACS System Release 5.1.9
Default
off
off
mon
mon
mon
PCM
PCM
n/a
n/a
n/a
Server Cards
FXS Card
FXS Card User Screens and Settings
T-R-STAT
MODE
TYPE
STATUS
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
n/a
n/a
n/a
n/a
SIG MON
The Signaling Monitor feature works with the user card alarm system to detect excessive
signaling bit transitions. The system will generate alarms if the number of transitions of any
signaling bit in transmit or receive direction for an active port exceeds 255 in any four second
interval. The options are off and on, and they are toggled by pressing “g” (siGmon command)
in the Test Screen.
TEST
The Test parameter shows if the port is in test mode or not. Inactive ports and ports that are
assigned to inactive WANs will show a test status of n/a. The test status options for active
ports are off and on.
Tx ABCD
The Transmit ABCD setting allows the user to either monitor the status of the ABCD signaling
bits being transmitted towards the network or set a specific ABCD pattern for testing the
transmit side of the circuit. The options for this field are mon (monitor) or set. Choosing set
will bring up a four digit field for users to input the ABCD pattern they want to transmit. Any
four-digit combination of ones and zeros is acceptable for this setting.
Rx ABCD
The Receive ABCD setting allows the user to either monitor the status of the ABCD signaling
bits being received from the network or set a specific ABCD pattern for testing the receive
side of the circuit. The options for this field are mon (monitor) or set. Choosing set will bring
up a four digit field for users to input the ABCD pattern they want to receive. Any four digit
combination of ones and zeros is acceptable.
T-R-CNTL
The Tip and Ring Control setting allows you to either mon (monitor) or set (set) the state of
the Tip and Ring leads of an FXS port. Choosing set will display the following options (b =
battery, o = open, g = ground):
•
RbTo (-48V is applied to the Ring lead and the Tip lead is open)
•
TbRo (-48V is applied to the Tip lead and the Ring lead is open)
Voice Cards
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User Screens and Settings
•
RbTg (-48V is applied to the Ring lead and the Tip lead is grounded)
•
TbRg (-48V is applied to the Tip lead and the Ring lead is grounded)
Model
FXS
CardNo.
TO USER
In cross-connect systems only, the To User parameter allows you to break the circuit and send
a test tone on the user side of the system. The options for this field are PCM, 300Hz, 1kHz,
3kHz, and quiet. Choose PCM if you do not want to inject a tone toward the CPE. In this
case, the PCM signal received from the network is still sent to the CPE in the normal manner.
TO NTWK
In cross-connect systems only, the To Network parameter allows you to break the circuit and
send a test tone on the network side of the system. The options for this field are PCM, 300Hz,
1kHz, 3kHz, and quiet. Choose PCM if you do not want to inject a tone toward the network.
In this case, the PCM signal received from the CPE is still sent to the network in the normal
manner.
Tx ABCD
The Transmit ABCD informational field shows the current values of the ABCD bits that are
being transmitted to the network. If TX ABCD in the top half of the screen is changed via the
set function mentioned above, and the settings are saved by the Save command in the Menu
of Actions, the new bit pattern chosen will be reflected here.
Rx ABCD
The Receive ABCD informational field shows the current values of the ABCD signaling bits
that are received from the network. If RX ABCD in the top half of the screen is changed via
the set function mentioned above, and the settings are saved by the Save command in the
Menu of Actions, the new bit pattern chosen will be reflected here.
T-R-CNTL
The Tip and Ring Control informational field shows the current status of the Tip and Ring
leads of the FXS port from the perspective of the system. The possible values are as follows
(b = battery, o = open, g = ground):
2-16
•
RbTo (-48V is applied to the Ring lead and the Tip lead is open)
•
TbRo (-48V is applied to the Tip lead and the Ring lead is open)
•
RbTg (-48V is applied to the Ring lead and the Tip lead is grounded)
•
TbRg (-48V is applied to the Tip lead and the Ring lead is grounded)
IMACS System Release 5.1.9
Server Cards
FXS Card
•
FXS Card User Screens and Settings
ring (the ringing voltage is applied between Tip and Ring)
T-R-STAT
The Tip and Ring Status informational field describes what the attached device is doing with
the Tip and Ring leads of the FXS port. The possible values are:
•
loop (attached device is connecting Tip and Ring together)
•
rgnd (the Ring lead is grounded by the attached device)
•
open (Ring lead is not connected to either the Tip lead or to ground)
MODE
The Mode informational field shows the current mode of the port that was selected on the main
FXS card Screen. Valid settings are fxs, fxsdn, wink, plar, dpo, or slc96.
TYPE
The Type informational field shows the current status of the signal field selected on the main
FXS card screen for this port. Valid settings for fxs and wink modes are loop (loop start), lp-fd
(loop start–forward disconnect), gs (ground start), gs-i (ground start immediate) and gs-a
(ground start automatic). Valid settings for fxsdn modes are loop (loop start), lp-fd (loop
start–forward disconnect), gs (ground start), gs-i (ground start immediate), gs-a (ground start
automatic) and fgd (Feature Group "D"). Valid settings for the plar mode are d3 and d4. The
only valid setting for the dpo mode is dpo (dial pulse originating).
STATUS
The Status field shows the current status of the port. Table 2-9 lists and describes all of the
possible conditions reported by this field.
Table 2-9. Status Information Field Settings
Setting
stdby
W stb
W tst
W OOS
noWAN
call
busy
idle
TC
Voice Cards
Meaning
The FXS port is in standby.
WAN card to which the FXS port is assigned is in standby.
WAN card to which the FXS port is assigned is under test.
WAN card to which the FXS port is assigned is out of service.
There is no WAN card configured in the slot to which the FXS port is
assigned.
Call set-up is in progress.
Call is in progress.
No call is in progress (port is available for a call).
The port is in Trunk Conditioning because a CGA alarm occurred on the
associated WAN port.
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FXS
CardNo.
Running
FXS
ErrorHead
Messages
test
maint
2.4
A test is in progress on the port (i.e., you are actively controlling the circuit
by setting values for Tx ABCD or Rx ABCD).
The port is in a maintenance condition.
FXS Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
2.5
FXS Card Troubleshooting
The FXS card may be faulty if a voice signal is not received at one end of a circuit, or if
signaling is not detected. The following are possible causes:
•
Faulty receiving CPE at the near end (where the problem was first noticed)
•
Faulty transmitting CPE at the far (opposite) end
•
Faulty cabling between the CPE and FXS card at the near end
•
Faulty cabling between the CPE and FXS or FXO card at the far end
•
T1 or E1 network failure
•
Improper card configuration at either end (e.g., time slot and/or WAN port assignments)
First, verify that the T1 or E1 network has not failed. Check for a CGA-Red alarm on the
associated WAN port at the end where the incoming VF signal loss is first noticed. The CGA
indicates that the incoming network signal was lost (or that the receiving WAN port is out of
frame). During the CGA, all voice ports with time slots on that WAN port will also be
disabled, and the associated far-end WAN port will be in a CGA-Yellow alarm state. If the
network is faulty, you must clear that trouble to restore your circuits.
If the network is okay, verify that the proper WAN ports and time slots are assigned to the
associated FXS and FXO voice ports at both ends, as previously outlined in this chapter. In a
point-to-point network, the near-end and far-end FX card ports should both be assigned the
same WAN port and time slot number. Also make sure the other parameters (such as the
transmit and receive TLPs) are set properly at both ends.
If the FX card port parameters are correct at both ends, and if the network is okay, the trouble
is isolated to the FXS card or the associated port. Proceed as follows:
1. At the far end, activate an analog loopback on the FX card port.
2. Send a 0 dBm (digital milliwatt) test signal toward the CPE at that end. That signal will
be substituted for the normal signal coming from the far-end CPE; it will be sent back
to the CPE at your end via the loopback path.
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Server Cards
FXS Card
FXS Card Specifications
3. Check your CPE for this signal. If it is present, the far-end CPE or cabling to the far-end
FX card is probably faulty. Disable the loopback and test signal there, and fix the
problem. If you still don’t receive a signal, go to step 4.
4. At your end, go to the FXS Card Main Screen and send a digital milliwatt test tone (0
dBm) toward the CPE. If you still don’t receive a signal, check the cabling from the
FXS card to your CPE, and check the CPE itself. If those items are okay, replace the
FXS card at your end.
5. If the FXS card is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.
2.6
FXS Card Specifications
FXS Cards (812960 2-wire)
Number of Ports
Model 812960
8 ports
Physical Interface
Connector
1 female 50-pin telco connector
Transmission Performance
Performance
Exceeds requirements of ITU-T Rec. G.713
Signaling Modes
Model 812X Signaling Modes
Software selectable on a per port basis
Foreign Exchange Station (FXS)
Loop Start and Ground Start
Foreign Exchange Station - Defined Network (FXSDN)
Private Line Automatic Ringdown (PLAR)
Dial Pulse Originating (DPO)
Termination Impedance
600 Ohms with 2.16 µF
Model 812960
VF Transmission Characteristics
Nominal Transmit TLP
Nominal Receive TLP
PCM Encoding
-10.0 dB to +5.0 dB in steps of 0.1 dB
-10.0 dB to +2.0 dB in steps of 0.1 dB
Software selectable on a per port basis
Attenuation Versus Frequency Relative to 1 kHz with 0 dBm0 input
Frequency
200 Hz
300 to 3000 Hz
3200 Hz
3400 Hz
Transmit (A to D)
-0.25 to +3.0 dB
-0.25 to +0.5 dB
0.25 to +0.75 dB
-0.25 to +1.5 dB
Return Loss (at 1 kHz)
Transhybrid Loss
Idle Channel Noise (rcv and xmt)
Interchannel Crosstalk
Voice Cards
Receive (D to A)
-0.25 to +2.0 dB
-0.25 to +0.5 dB
-0.25 to +0.75 dB
-0.25 to +1.5 dB
>28 dB
34dB
< -65 dBm0p Typ < -70 dBmop or < 20 dBrnc0
Typ < -75 dBm0 using 7 adjacent channels being disturbed with a signal
of 0.0 dBm0
IMACS System Release 5.1.9
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FXS
CardNo.
Running
FXS
CardHead
Specifications
Total Distortion including Quantization (Signal to Distortion Ratio) Input Frequencies 1004-1020 Hz
Input Level
-30 to 0 dBm0
-40 dBm0
-45 dBm0
Absolute group delay
Group Delay Distortion vs. frequency
Longitudinal Balance
Variation of Gain with Input Level
2-20
Rcv or Xmt
>35 dB
>29 dB
>25dB
Overall
>33 dB
>27 dB
>22 dB
< 750 microseconds
within boundaries of ITU-T Rec. G.713 Figure 2
Nom > 46 dB
Typ > 50 dB
within boundaries of ITU-T Rec. G.713 Figure 7
IMACS System Release 5.1.9
Server Cards
FXO Card
Introduction
Chapter 3
FXO Card
3.1
Introduction
This chapter provides installation, configuration, and troubleshooting information for the
Foreign Exchange - Office (FXO) Card, which is identified as a FXO 2W*8-6 card on its
faceplate ejector.
The FXO 2W*8-6 Card manages the flow of FXO voice traffic through the Integrated Access
System. Each card encodes analog (voice, VF) signals to a digital bloodstream at the local
system for transmission over a T1 or E1 network. It also decodes the digital signals to analog
at the remote system.
The card has a two-wire interface and supports Foreign Exchange - Office (FXO), Manual
Ringdown (MRD), Foreign Exchange Office-Defined Network (FXODN), and Dial-Pulse
Terminating (DPT) operations.
The FXO card also can use the voice compression features of an ADPCM card.
Host code 5.1.6 adds the Answer Supervision function to both the loop start and ground signal
options. The new states (which are now combined with forward disconnect) are:
•
FXO loop start forward disconnect and answer supervision (lp-fa)
•
FXO ground start forward disconnect and answer supervision (gs-fa)
•
FXO ground start forward disconnect (gs-fd)
Answer Supervision (AS) is a supplemental feature available for analog voice-grade
switched-access lines that use loop-start signaling or ground-start signaling. When the Answer
Supervision feature is available, an originating call from a Customer Installation (CI) (or
Customer's Premises) receives an electrical signal indicating that the terminating (called) CI
has answered. The AS signal is a polarity reversal of the voltage that the network applies
between the tip conductor and the ring conductor at the Network Interface. The most common
application of AS is to determine if and when the called party has answered the phone for
billing purposes.
Host code 5.1.6 also adds the ability to detect 25 HZ ringing frequency in both options. The
specification for incoming ringing signal detection at the switch end is 17 to 28 Hz, at 40 to
110 Vrms. Ringing output at the FXS end is governed by the ring generator.
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FXO
CardNo.
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FXO
CardHead
Descriptions
3.2
FXO Card Descriptions
3.2.1
FXO 2W*8-6 Card Description (813970)
The FXO 2W*8-6 Card is a eight-port voice card with a 600-ohm terminating impedance on
each port. All FXO features are supported by this card.
Notice!
UL STATEMENT
OPERATION OF THIS INTERFACE IS LIMITED TO INTRA-BUILDING
CONNECTIONS ONLY
Note:
3.2.1.1
The 813970 retains all the functionality of the 813960, and, in addition, offers
improved ground start signaling operation.
Card Jumper/Switch Settings
The FXO 2W*8-6 Card has eight sets of jumpers that you must set before inserting the card
into a system chassis. Figure 3-1 shows these jumpers, which allow you to configure
individual ports of the card for either FXO or MRD operation.
To set up a port for MRD operation, insert shorting jumpers vertically between pins 1 and 2
for that port, as shown. Each port has two associated jumpers. To use FXO operation on any
port, remove its associated jumpers, and store them on pin 2 for future use.
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FXO Card
FXO Card Descriptions
FXO
2W*8-6
Port #8
Port #7
Port #6
Port #5
US/EURO
Jumper
Port #4
Port #3
P
1
Port #2
Port #1
US/EURO
Jumper
Labeling
Figure 3-1. FXO 2W*8-6 Card Jumper Settings
3.2.1.2
Installing the Card
Install the FXO 2W*8-6 card in any user card slot. These slots are U1 to U8 on the two-sided
chassis and front-loading chassis with power supplies on top, or P1 to P4 and W1 to W4 on
the front-loading chassis with power supplies on the side.
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FXO
CardNo.
Running
FXO
CardHead
User Screens and Settings
3.3
FXO Card User Screens and Settings
3.3.1
FXO Card Main Screen
The FXO Card must be configured for operation after installing it into the system chassis. This
is done from the FXO Card Main Screen (see Figure 3-2). To go to that screen, use the
directional arrow keys to highlight the desired card in the System Main Screen, and press
<Enter>. This screen shows one configuration column for each port on the card.
Figure 3-2. Typical FXO Card Main Screen
The bottom highlighted line of this screen shows various actions that you can perform from
the screen. You perform the desired action by pressing the associated uppercase letter key.
Table 3-1 summarizes these actions. For example, after you configure the FXO card ports,
press “s” to save your settings.
Table 3-1. Main Screen Actions
Action
Save
Undo
Refresh
3-4
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (e.g. test status).
IMACS System Release 5.1.9
Server Cards
FXO Card
Copy
Test
Main
FXO Card User Screens and Settings
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
Initiates and monitors testing of all FXO card ports. Refer to the Test section
of this chapter.
Returns to the System Main Screen. If changes are made to settings and not
saved, you will be prompted to save or lose changes.
Table 3-2 summarizes the configuration settings for the FXO card, along with the available
and factory-default option settings. The M key will return you to the Main Menu. The
parameters and settings are also described in the following paragraphs.
Table 3-2. Main Screen Option Settings and Defaults
Parameter
STATE
WAN/SRV
TS
MODE
SIGNAL
Rx TLP
Tx TLP
CODING
TC CGA
LB
PATTERN
HYBRID
WK DLY
WINK
SIG CONV
RATE
ADPCM
OHD TOUT
User Options
stdby actv
none wan serv user
1
01-24 01-31
2
fxo fxodn dpt mrd
loop gs lp-fd 1s-R2 gs-a lp-em lp-fa gs-fa gs-fd 3
-10.0 dB to +2.0 dB
-10.0 dB to +5.0 dB
µ-law a-law a-inv
4
idle busy
off dgtl anlg
none D-mW quiet
set1 to set8 user
5
00-99
6
00-199
6
off on
64K 24K,1 32K,1 40K,1 24K,2 32K,2 40K,2 7
n/a P1 P2 P3
1600ms - 3300ms
Notes
Default
stdby
w1-1
01
fxo
loop
0.0
0.0
µ-law
idle
off
none
set1
0
0
off
64K
n/a
3700ms
Note:
1. Choosing wan allows you to choose a WAN port (w1-1 through w4-2). Choosing serv lets
you choose an ADPCM server card in slot P1, P2, or P3, followed by a logical port on that
card. If your system has the FRS card installed and you want to use voice compression you
need to install the Low Bit Rate Voice (LBRV) card. The user option is not used. See the
WAN/SRV description that follows.
2. Time slot 16 is not available if the port is assigned to an E1 WAN link whose time slot 16
is programmed for CAS or CCS.
3. These options are only valid if the option selected is fxo, or fxodn. If the mode is dpt, then
the Signal options are dpt (default), R2, i-R2 or dp-em. If the Mode is mrd, then the
Signal setting will automatically default to mrd. CallerID can be activated or deactivated
using the SIGNAL configuration for each port. For more information on CallerID, refer
to “SIGNALS” on page 7 and “OHD TOUT” on page 10.
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Model
FXO
CardNo.
4. The default is a-inv for E1 and µ-law for T1. These values will change depending upon
the WAN link selected.
5. The default, set1, is the only active option. It balances to the ideal termination of 600 ohms
+ 2.15 µF. The other settings are reserved for future use.
6. These settings should be used with fxodn and dpt modes only.
7. Choosing a Rate other than 64K allows you to select an ADPCM slot.
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the State setting to standby (stdby) for ports you are
not using, or have not yet configured. Set it to active (actv) for ports that are ready for use.
WAN/SRV
The WAN/SRV setting identifies the WAN link or server card assigned to this port. If you
choose wan, you also must select the desired port (w1-1 through w4-2) of a WAN card for
transmission over a T1 or E1 link. Or, choose serv to assign the card port to a server card in
the system. This can be an ADPCM or FRS card, which resides in chassis slot P1, P2, or P3.
You must then choose a logical port on that card. The user option is not used.
It is not necessary to assign all ports of the same FXO card to the same WAN link or server
card, or to contiguous time slots on a WAN link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. Values
range from 1-24 for T1 links and 1-31 for E1 links. Time slot 16 is not available on E1 links
that are programmed for cas or ccs signaling. For a display of the available time slots, refer to
your cross-connect map for the WAN link.
MODE
The Mode setting should be determined by the type of equipment to which you connect the
port. All options use two-wire balanced connections. The fxo (Foreign Exchange Office)
option allows you to connect the system to a 2 way PBX trunk (both inbound and outbound
calls) or a key system trunk. The fxodn (Foreign Exchange Office-Defined Network) option
provides access to new services offered by advanced networks from many major carriers. The
dpt (Dial Pulse Terminating) option allows the unit to attach to incoming one-way trunks from
a PBX, key system, or a telephone set.
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FXO Card
FXO Card User Screens and Settings
The mrd (manual ringdown) option provides point-to-point unswitched connections between
two telephone sets. This configuration is usually not attached to an exchange or switch; rather
it provides a “hot line” between two locations. The system requires hardware changes and a
ringing generator for this option (see instructions later in this chapter).
SIGNALS
The Signal setting matches the signaling behavior of the FXS equipment and the local switch.
Use the loop (Loop Start) option with CO lines and simple PBX trunks. Use the gs (Ground
Start) option with two-way PBX trunks because it helps to prevent glaring or call collisions.
Use the lp-fd (Loop Start–Forward Disconnect) option with automated answering equipment
at the far end. The ls-R2 (Loop Start–R2 protocol) option is provided for a CCITT R2
interface.
Use gs-a (ground-start automatic) option for equipment requiring fast-response time to the
central office. The lp-em (Loop Start–R2 electromechanical) option for use on Russian
telephone systems.
The OHD TOUT writeup on page 3-10 describes how you set the on-hook data time out
between power rings. If the line goes off-hook before or during the data transmission, data
transmission shall be preempted or stopped and normal call completion treatment shall be
provided.
If you selected the dpt option for the Mode of any port, then the three options that are
supported under Signal are dpt for standard Dial Pulse Termination signaling used in North
America, R2 for CCITT signaling used internationally, i-R2 (immediate R2) which provides
immediate seizure acknowledgment to the network and dp-em (Dial Pulse
Electromechanical) used for timing relays that are specific to Russia. If you select mrd as the
Mode, then Signal will automatically default to mrd. If you select fxodn in Mode the options
are loop, gs, lp-fd, R2, gs-a and lp-em. For fxo the option is listed ls-R2 instead of R2, but
the options are the same.
Use lp-fa or gs-fa when Answer Supervision is required. The selection of Answer Supervision
will always use Forward Disconnect. The Forward Disconnect option can also be used without
Answer Supervision in both loop and ground start modes (lp-fd and gs-fd).
CAUTION!
Before activating a port, verify the behavior expected by both the station equipment and the
remote central office equipment and ensure that you have the system properly configured.
Rx TLP
The Receive Transmission Level Point setting controls the amount of gain or attenuation
added to signals after they are decoded to analog signals. To increase the signal level, set the
Rx TLP setting to a positive number (i.e., the larger the number, the more gain is added). To
decrease the signal level, set the Rx TLP setting to a negative number (i.e., the more negative
Voice Cards
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FXO
CardHead
User Screens and Settings
Model
FXO
CardNo.
the number, the more the signal level is decreased). For example, an incoming signal at -5
dBm can be increased to -3 dBm by setting Rx TLP to +2 dB. Acceptable values range from
-10.0 dB to +2.0 dB.
Tx TLP
The Transmit Transmission Level Point setting controls the amount of gain or attenuation
added to signals after they are received from the local analog port, and before they are encoded
to digital PCM signals. To increase the signal level, set the Tx TLP setting to a negative
number (i.e., the more negative the number, the more gain is added). To decrease the signal
level, set the Tx TLP setting to a positive number (i.e., the more positive the number, the more
the signal level is decreased). For example, an incoming signal at -5 dBm can be increased to
-2 dBm by setting Tx TLP to -3 dB. Acceptable values range from -10.0 dB to +5.0 dB.
CODING
The Coding setting sets the PCM companding method used for a port. Generally, the North
American T1 environment uses m-law coding. The International E1 environment uses a-law
or a-inv (inverted A-law) coding, and a-inv provides a higher ones density than a-law. The
coding default is determined by the type of card in the WAN port you select.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the FXO port
should be placed in idle or busy mode upon declaration of a Carrier Group Alarm (CGA) on
the WAN link to which the port is assigned. In most cases, you should set this parameter to
busy. If a call is in progress when the CGA alarm is received, the system will hold the call for
two seconds, drop it and then busy out the port to the attached PBX for the duration of the
alarm. Once the alarm clears, the system will automatically place the port back in idle mode
thereby making it available to the attached PBX.
LB
The Loopback field lets you loop the port back toward the network and far end. The dgtl
(digital) loopback sends the incoming digital DS0 signal back to the far end without decoding
it. The anlg (analog) loopback sends the decoded analog signal back to the far end after
decoding and then re-encoding it. Figure 3-3 shows the loopback options, which allow you to
test and troubleshoot the FXS card. To disable a loopback, set this field to off.
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FXO Card
FXO Card User Screens and Settings
FXO Card
Codec
Analog
Loopback
Digital
Loopback
Digital-to-Analog
Convertor
PCM Bus
T1/E1
Network
DS-0
Figure 3-3. FXO Card Loopbacks
PATTRN
The Pattern setting sets the outgoing test pattern for this analog port. The pattern, generated
by the system, is sent only to the currently selected port. The none option disables sending a
test pattern. The D-mW (Digital milliwatt) option sends a 1 kHz tone at 0.0 dBm. The Rx TLP
setting affects the D-mW signal level. The quiet option places a termination on the line so that
no analog signal is sent.
HYBRID
The Hybrid option assigns a three-byte pattern to define the adjustment for return loss (similar
to Build-Out Capacitors). The default, set1, balances to the ideal termination of 600 ohms +
2.15 uF. The other settings are reserved for future use.
WK DLY
The Wink Delay setting allows you to set the wink delay time. The options are units of 100
milliseconds. Settings are 1-99 (100 milliseconds to 9.9 seconds). The Wink Delay and Wink
options are applicable to CCITT systems for determining the delay of the R2 state machine.
They should only be used with modes fxodn and dpt (R2 and i-R2).
Voice Cards
IMACS System Release 5.1.9
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Running
FXO
CardHead
User Screens and Settings
Model
FXO
CardNo.
WINK
The Wink setting allows you to set the wink duration time. The options are units of 100
milliseconds. Settings are 1-99 (100 milliseconds to 9.9 seconds). This option is only
applicable with modes fxodn and dpt (R2 and i-R2).
SIG CONV
The Signaling Conversion parameter allows you to change the ABCD signaling bits from
CCITT (E1) to ANSI (T1) standards. This conversion is completed regardless of the type of
WAN aggregate (CSU/DSX or CEPT) to which it is attached. The options are off (which
means that ANSI signaling is used) and on (which converts transmit signaling from ANSI to
CCITT format according to the Interface Card Conversion Table for FXO signaling, and also
converts receive signaling from CCITT to ANSI).
RATE
The Rate parameter allows you to use the voice compression capabilities of the ADPCM
resource card. If that card is not present in the system, changes cannot be made to this setting.
The 64K option (default) does not use ADPCM resources (it is the normal operation rate for
voice circuits).
ADPCM voice channels are assigned in pairs by designating two voice ports (E&M, FXO or
FXS) to the same WAN link and time slot and selecting rate settings for the pair that add up
to 64kbps (i.e. [24K,1+40K,2],[32K,1+32K,2] and [40K,1+24K,2]). The numeral 1 after the
rate setting assigns that portion of the voice port pair to the odd side of the ADPCM pair. The
numeral 2 after the rate setting assigns that portion of the voice port pair to the even side of
the ADPCM pair.
For more information about voice port assignments to the ADPCM card, please consult the
ADPCM section of the manual.
ADPCM
The ADPCM parameter lets you choose the ADPCM card on which to place this FXO port.
The default setting is n/a and only changes when a Rate smaller than 64k is selected (see
above). You can then select which ADPCM card to use for the port (assignment is made by
chassis slot number). The options are P1, P2, and P3.
OHD TOUT
The OHD TOUT field is used to activate CallerID and setting the On Hook Data Timeout
(OHD TOUT). OHD TOUT is a value between 1600ms and 3300ms and indicates the length
of time after the first ring that the FXO card will accept data, such as CallerID.
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FXO Card
Note:
FXO Card User Screens and Settings
This field is only applicable if MODE is set to fxo and SIGNAL is set to either loop,
gs, lp-fd or gs-a. For the ls-R2 and lp-em options and modes different from fxo,
CallerID is not supported, and n/a will be displayed in the OHD TOUT configuration.
Activate CallerID by highlighting the appropriate port (1-8) then highlight the OHD TOUT
configuration row. After highlighting your selection, press the return key. The options on and
off will be displayed on bottom of the screen.
1. Highlight off, press the return key and the OHD TOUT configuration indication will be
off, indicating that CallerID is OFF.
2. Highlight on and press the return key. Enter number <1600 - 3300>: 3300 will be
displayed. Enter the new configuration time ranging from 1600-3300 in milliseconds, and
press the return key. The OHD TOUT configuration time will be displayed for that port,
indicating that CallerID is ON.
3.3.2
Test Screen
The Test option facilitates testing and maintenance by allowing you to monitor and set the
status of the analog interface leads as well as monitoring and setting the value of the A, B, C
and D signaling bits of all FXO circuits on that card. In cross-connect systems only, the test
option also allows you to apply test patterns and tones towards the user and network sides of
the system.
Figure 3-4 shows a typical FXS Card Test Screen, Table 3-3 lists some actions you can
perform from this screen, and Table 3-4 shows the option settings and defaults for each
parameter.
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3-11
Model
FXO
CardNo.
Running
FXO
CardHead
User Screens and Settings
Figure 3-4. Typical FXO Card Test Screen
Table 3-3. Test Screen Actions
Action
Save
Undo
Refresh
Main
siG mon
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test data).
Returns to the FXO Card Main Screen. If changes are made to settings and
not saved, you will be prompted to save or lose changes.
Used with the user card alarm system to notify you of excessive transitions of
signaling bits.
Table 3-4. Test Screen Option Settings and Defaults
Parameter
SIG MON
TEST
Tx ABCD
Rx ABCD
T-R-CNTL
TO USER
TO NTWK
Tx ABCD
Rx ABCD
3-12
User Options
off on
off on
mon set
mon set
mon set
PCM 300Hz 1kHz 3kHz quiet
PCM 300Hz 1kHz 3kHz quiet
Status information only; not editable
Status information only; not editable
IMACS System Release 5.1.9
Default
off
off
mon
mon
mon
PCM
PCM
n/a
n/a
Server Cards
FXO Card
FXO Card User Screens and Settings
T-R-CNTL
T-R-STAT
MODE
TYPE
STATUS
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
n/a
n/a
n/a
n/a
n/a
SIG MON
The Signaling Monitor feature works with the user card alarm system to detect excessive
signaling bit transitions. The system will generate alarms if the number of transitions of any
signaling bit in transmit or receive direction for an active port exceeds 255 in any four second
interval. The options are off and on, and they are toggled by pressing “g” (siGmon command)
in the Test Screen.
TEST
The Test Parameter shows if the port is in the test mode or not. Inactive ports and ports that
are assigned to inactive WANs will show a test status of n/a. The test status options for active
ports are off and on.
Tx ABCD
The Transmit ABCD setting allows you to either monitor the status of the ABCD signaling
bits being transmitted towards the network or set a specific ABCD pattern for testing the
transmit side of the circuit. The options for this field are mon (monitor) or set. Choosing set
will bring up a four digit field for you to input the ABCD pattern you want to transmit. Any
four digit combination of ones and zeros is acceptable for this setting.
Rx ABCD
The Receive ABCD setting allows you to either monitor the status of the ABCD signaling bits
being received from the network, or set a specific ABCD pattern for testing the receive side
of the circuit. The options for this field are mon (monitor) or set. Choosing set will bring up
a four-digit field for you to input the ABCD pattern you want to receive. Any four digit
combination of ones and zeros is acceptable for this setting.
T-R-CNTL
The Tip and Ring Control setting allows you to either monitor (mon) or set (set) the state of
the Tip and Ring leads of an FXO port. Choosing set will bring up the following options:
•
loop (the Tip and Ring leads are tied together)
•
open (the Ring lead is not connected to either Tip or ground)
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FXO
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Model
FXO
CardNo.
TO USER
In cross-connect systems only, the To User parameter allows you to break the circuit and send
a test tone toward the user side of the system. The options for this field are PCM, 300Hz, 1
kHz, 3 kHz and quiet. Selecting PCM means that you do not want to inject a tone toward the
user and that the PCM signal received from the network should continue to be sent to the user
port in the normal manner.
TO NTWK
In cross-connect systems only, the To Network parameter allows you to break the circuit and
send a test tone toward the network side of the system. The options for this field are PCM,
300Hz, 1 kHz, 3 kHz and quiet. Selecting PCM means that you do not want to inject a tone
toward the network and that the PCM signal received from the user port should continue to be
sent to the network in the normal manner.
Tx ABCD
The Transmit ABCD information field shows the current values of the ABCD bits that are
being transmitted to the network. If TX ABCD in the top half of the screen is changed via the
set function mentioned above, and the settings are saved by the Save command in the Menu
of Actions, the new bit pattern chosen will be reflected here.
Rx ABCD
The Receive ABCD information field shows the current values of the ABCD signaling bits
that are received from the network. If RX ABCD in the top half of the screen is changed via
the set function mentioned above, and the settings are saved by the Save command in the
Menu of Actions, the new bit pattern chosen will be reflected here.
T-R-CNTL
The Tip and Ring Control information field shows the current status of the Tip and Ring leads
of the FXO port from the perspective of the system. The possible values are:
3-14
•
loop (the Tip and Ring leads are tied together)
•
open (the Ring lead is not connected to either the Tip or to ground)
•
rgnd (the Ring lead is grounded)
•
lpgnd (the Tip and Ring leads are tied together and the Tip is grounded)
•
ring (ringing voltage is present on Tip and Ring)
IMACS System Release 5.1.9
Server Cards
FXO Card
FXO Card User Screens and Settings
T-R-STAT
The Tip and Ring Status information field describes what the attached device is doing with the
Tip and Ring leads of the FXO port. The possible values are:
•
ring (attached device is applying ringing voltage between Tip and Ring)
•
TbRg (attached device is applying -48V battery to Tip and grounding Ring)
•
ToRo (attached device is leaving both the Tip and Ring leads open)
•
TgRo (attached device is grounding the Tip lead and is leaving the Ring lead open)
•
RbTg (attached device is applying -48V battery to Ring and grounding Tip)
•
RbTo (attached device is applying -48V battery to Ring and leaving Tip open)
•
TgR* (attached device is grounding Tip, and the Ring lead state is unknown)
•
ToR* (attached device is leaving Tip open, and the Ring lead state is unknown)
•
RoT* (attached device is leaving Ring open, and the Tip lead state is unknown)
•
n/a (information is not available)
MODE
The Mode information field shows the current mode of the port that was selected on the main
FXO card Screen. Valid settings are fxo, fxodn, dpt or mrd.
TYPE
The Type information field shows the current status of the signal field selected on the main
FXO card screen for this port. Valid settings for both fxo and fxodn modes are loop (loop), gs
(ground start), lp-fd (loop start-forward disconnect) and R2 (R2). Valid settings for the dpt
mode are dpt (dial pulse terminating), R2 (R2), i-R2 (immediate R2), and dp-em (Dial Pulse
Electromechanical). The only valid setting for the mrd mode is mrd (manual ringdown).
STATUS
The Status information field shows the current status of the port Table 3-5 lists and describes
all of the possible conditions that are reported in this field.
Table 3-5. Status Information Field Settings
Setting
stdby
W stb
W tst
W OOS
Voice Cards
Meaning
The FXO port is in standby.
The WAN card to which the FXO port is assigned is in standby.
The WAN card to which the FXO port is assigned is under test.
The WAN card to which the FXO port is assigned is out of service.
IMACS System Release 5.1.9
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Model
FXO
CardNo.
Running
FXO
CardHead
Error Messages
noWAN
call
busy
idle
TC
test
maint
3.4
No WAN card is configured in the slot to which the FXO port is assigned.
Call setup is in progress.
Call is in progress.
No call in progress (port is available for a call).
Port is in Trunk Conditioning because a CGA alarm occurred on the
associated WAN port.
Port is under test (i.e., you are actively controlling the circuit by setting
values for Tx ABCD or Rx ABCD).
The port is in a maintenance condition.
FXO Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
3.5
FXO Card Troubleshooting
The FXO card may be faulty if a voice signal is not received at one end of a circuit, or if
signaling is not detected. The following are possible causes:
•
Faulty receiving CPE at the near end (where the problem was first noticed)
•
Faulty transmitting CPE at the far (opposite) end
•
Faulty cabling between the CPE and FXO card at the near end
•
Faulty cabling between the CPE and FXO or FXS card at the far end
•
T1 or E1 network failure
•
Improper card configuration at either end (e.g., time slot and/or WAN port assignments)
First, verify that the T1 or E1 network has not failed. Check for a CGA-Red alarm on the
associated WAN port at the end where the incoming VF signal loss is first noticed. The CGA
indicates that the incoming network signal was lost (or that the receiving WAN port is out of
frame). During the CGA, all voice ports with time slots on that WAN port will also be
disabled, and the associated far-end WAN port will be in a CGA-Yellow alarm state. If the
network is faulty, you must clear that trouble to restore your circuits.
If the network is okay, verify that the proper WAN ports and time slots are assigned to the
associated FXO and FXS voice ports at both ends, as previously outlined in this chapter. In a
point-to-point network, the near-end and far-end FX card ports should both be assigned the
same WAN port and time slot number. Also make sure the other parameters (such as the
transmit and receive TLPs) are set properly at both ends.
If the FX card port parameters are correct at both ends, and if the network is okay, the trouble
is isolated to the FXO card or the associated port. Proceed as follows:
1. At the far end, activate an analog loopback on the FX card port.
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FXO Card
FXO Card Specifications
2. Send a 0 dBm (digital milliwatt) test signal toward the CPE at that end. That signal will
be substituted for the normal signal coming from the far-end CPE; it will be sent back
to the CPE at your end via the loopback path.
3. Check your CPE for this signal. If it is present, the far-end CPE or cabling to the far-end
FX card is probably faulty. Disable the loopback and test signal there, and fix the
problem. If you still don’t receive a signal, go to step 4.
4. At your end, go to the FXO Card Main Screen and send a digital milliwatt test tone (0
dBm) toward the CPE. If you still don’t receive a signal, check the cabling from the
FXO card to your CPE, and check the CPE itself. If those items are okay, replace the
FXO card at your end.
5. If the FXO card is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.
3.6
FXO Card Specifications
FXO Cards (813970 2-wire)
Number of Ports
8 ports
Physical Interface
Connector
1 female 50-pin telco connector
Transmission Performance
Performance
Exceeds requirements of ITU-T Rec. G.713
Signaling Modes
Signaling Modes
Software selectable on a per port basis:
Foreign Exchange Office (FXO)
Foreign Exchange Office- Defined Network (FXSDN)
Manual Ringdown (MRD)
Dial Pulse Termination (DPT)
Termination Impedance
600 Ohms with 2.16 µF
VF Transmission Characteristics
Nominal Transmit TLP
Nominal Receive TLP
PCM Encoding
-10.0 dB to +5.0 dB in steps of 0.1 dB
-10.0 dB to +2.0 dB in steps of 0.1 dB
Software selectable on a per port basis
Attenuation Versus Frequency Relative to 1 kHz with 0 dBm0 input
Frequency
200 Hz
300 to 3000 Hz
3200 Hz
3400 Hz
Return Loss (at 1 kHz)
Voice Cards
Transmit (A to D)
-0.25 to +3.0 dB
-0.25 to +0.5 dB
0.25 to +0.75 dB
-0.25 to +1.5 dB
Receive (D to A)
-0.25 to +2.0 dB
-0.25 to +0.5 dB
-0.25 to +0.75 dB
-0.25 to +1.5 dB
>28 dB
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CardNo.
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FXO
CardHead
Specifications
Transhybrid Loss
Idle Channel Noise (rcv and xmt)
Interchannel Crosstalk
34dB
< -65 dBm0p Typ < -70 dBmop or < 20 dBrnc0
Typ < -75 dBm0 using 7 adjacent channels being disturbed with a signal
of 0.0 dBm0
Total Distortion including Quantization (Signal to Distortion Ratio) Input Frequencies 1004-1020 Hz
Input Level
-30 to 0 dBm0
-40 dBm0
-45 dBm0
Absolute group delay
Group Delay Distortion vs. frequency
Longitudinal Balance
Variation of Gain with Input Level
Ringing Signal
Input level
3-18
Rcv or Xmt
Overall
>33 dB
>35 dB
>29 dB
>27 dB
>25dB
>22 dB
< 750 microseconds
within boundaries of ITU-T Rec. G.713 Figure 2
Nom > 46 dB
Typ > 50 dB
within boundaries of ITU-T Rec. G.713 Figure 7
17 to 28 Hz @ 40 to 110 Vrms
IMACS System Release 5.1.9
Server Cards
FXS Coin Card
Introduction
Chapter 4
FXS Coin Card
4.1
Introduction
This chapter provides connector pinout, configuration, and troubleshooting information for
the Foreign Exchange - Station (FXSC) Coin Voice Cards.
These cards manage the flow of FXS voice traffic over the network. Each card encodes analog
(voice, VF) signals to a digital bitstream at the local system for transmission over a T1 or E1
network. It also decodes the digital signals to analog at the remote system.
Each FXS coin card has two-wire interface and use the voice-compression features of an
ADPCM card.
4.2
FXS Coin Card Descriptions
4.2.1
FXS-C 2W*8-6 Coin Card Description (814960)
The FXS-C 2W*8-6 Coin Card has six two wire ports and two wires, providing a 600-ohm
terminating impedance. The card consists of backplane interface circuitry, serial EEPROM for
card identification and adjustment parameters storage, metering pulse interface extension
between Coin Box Office (CO) and coin phone on the side of the coin phone, and six voice
line interface circuits. Each line interface circuit consists of a codec, a hybrid circuit.
4.2.1.1
Card Jumper/Switch Settings
The FXS-C 2W*8-6 Coin Card has the following jumpers on the motherboard. JP1 - Global
Metering Signal Frequency Selection (12/16 kHz). JP2 - Global Signal Frequency Selection
(0.5/1/2 Vrms). JP3 - Global Loop Length Selection; this jumper should be set to SL (short
loop) for loops not exceeding 700 ohms, or to LL (long loop) for loops comprised between
700 ohms and 1800 ohms. The default is LL. JP4 - EUR/US jumper. Set to US for domestic
applications and to EUR for European applications. Its default position is US. JPX01 (JP101,
JP201, JP301, JP401, JP501, and JP601) - Per Channel Metering Signal Frequency Selection
(these per channel jumpers settings should be consistent with the setting of JP1).
Voice Cards
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Model
FXS Coin
CardNo.
Running
FXS
CoinHead
Card Descriptions
FXS-C
2W*8-6
JP601
JP501
JP2
JP1
JP401
JP301
US EUR
JP4
JP3
JP201
P
1
JP101
Figure 4-1. Jumper Settings for FXS Coin Card
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Voice Cards
FXS Coin Card
4.2.1.2
FXS Coin Card User Screens and Settings
Installing the Card
Install the FXS Coin Card in any user card slot. These slots are U1 to U8 on the two-sided
chassis and front-loading chassis with power supplies on top, or P1 to P4 and W1 to W4 on
the front-loading chassis with power supplies on the side.
4.3
FXS Coin Card User Screens and Settings
4.3.1
FXS Coin Card Main Screen
You must configure the FXS Coin Card for operation after installing it into the system chassis.
This is done from the FXS Coin Card Main Screen (see Figure 4-2). To go to that screen,
highlight the desired card in the System Main Screen and press <Enter>. This screen shows
one configuration column for each port on the card.
Figure 4-2. Typical FXS Coin Card Main Screen
The bottom highlighted line of this screen shows various actions that you can perform from
the screen. You perform the desired action by pressing the associated capital letter key. Table
4-1 summarizes these actions. For example, after you configure the FXS Coin Card ports,
press “s” to save your settings.
Voice Cards
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FXS Coin
CardNo.
Running
FXS
CoinHead
Card User Screens and Settings
Table 4-1. Main Screen Actions
Action
Save
Undo
Refresh
Copy
Test
Main
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status).
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
Initiates and monitors testing of all FXS coin card ports. Refer to the Test
section of this chapter.
Returns to the Systems Main Screen. If changes are made to settings and not
saved, you will be prompted to either save or lose your changes.
Table 4-2 summarizes the configuration settings for the FXS Coin Card, along with the
available and factory-default option settings. The parameters and settings are also described
in the following paragraphs.
Table 4-2. Main Screen Option Settings and Defaults
Parameter
STATE
WAN
TS
MODE
TYPE
Rx TLP
Tx TLP
CODING
TC CGA
LB
PATTERN
HYBRID
RINGBK
RATE
ADPCM
User Options
stdby actv
none wan (w1-1 through w4-2) serv (P1 through P3)
01-24 01-31
fxsc
hf-a1 hf-a2 hf-cb rb-a1 rb-a2 rb-cb
-10.0 dB to +2.0 dB
-10.0 dB to +5.0 dB
u-law a-law a-inv
idle busy
off dgtl anlg
none D-mW quiet
set1 to set8 user
off on
64K, 24K,1 32K,1 40K,1 24K,2 32K,2 40K,2
n/a P1 P2 P3
Notes
1
2
3
4
5
6
Default
stby
w1-1
01
fxsc
hf-a1
0.0
0.0
u-law
idle
off
none
set1
off
64K
n/a
Notes:
1. Choosing wan allows you to choose a WAN port (w1-1 through w4-2).
2. Time slot 16 is not available if the port is assigned to an E1 WAN link whose time slot
16 is programmed for CAS or CCS.
3. The default is a-inv for E1 and u-law for T1. These values will change depending upon
the WAN link selected.
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FXS Coin Card
FXS Coin Card User Screens and Settings
4. The default (set1) is the only active option. It balances to the ideal termination of 600
ohms + 2.15 uF. The other settings are reserved for future use.
5. Choosing a Rate other than 64K allows you to select an ADPCM.
6. The default setting is n/a and only changes when a Rate smaller than 64K is selected.
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the State setting to stdby (standby) for ports that are
not to be used or that have not yet been configured. Set it to actv (active) for ports that are
ready for use.
WAN
The WAN setting identifies the WAN link assigned to this port. If you choose wan, you also
must select the desired port (w1-1 through w4-2) of a WAN card for transmission over a T1
or E1 link. This can be an ATM or FRS card, which resides in chassis slot P1, P2, or P3. You
must then choose a logical port on that card. The user option is not used.
It is not necessary to assign all ports of the same FXS coin card to the same WAN link, or to
contiguous time slots on a WAN link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. Values
range from 1 to 24 for T1 links and 1 to 31 for E1 links. Time slot 16 is not available on E1
links that are programmed for cas or ccs signaling. For a display of the available time slots,
refer to the cross-connect map for the WAN link; see the Operations chapter for information
about viewing cross-connect maps.
MODE
The Mode setting should be determined by the type of equipment to which the user is
connecting the port. All options use two-wire balanced connections. The fxsc (Foreign
Exchange Station-Coin) option allows users to connect the system to a two-way (both inbound
and outbound calls) PBX trunk or a key system trunk.
Voice Cards
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Running
FXS
CoinHead
Card User Screens and Settings
Model
FXS Coin
CardNo.
TYPE
The Type setting matches the signaling behavior of the FXSC equipment and the remote
switch. These settings are hf-a1 (high frequency - 12kHz), hf-a2 (high frequency - 16kHz),
hf-cb (high frequency-clear back), rb-a1 (reverse battery-answer 1), rb-a2 (reverse
battery-answer 2), and rb-cb (reverse battery-clear back).
Rx TLP
The Receive Transmission Level Point (TLP) setting controls the amount of gain or loss added
to the incoming signal after it is decoded to analog. To increase the signal level, set the Rx TLP
setting to a positive value (i.e., the larger the number, the more gain is added). To decrease the
signal level, set the Rx TLP setting to a negative value (i.e., the more negative the number, the
more the signal level is decreased). For example, an incoming signal at -5 dBm can be
increased to -3 dBm by setting Rx TLP to +2 dB. The Rx TLP range is -10.0 dB to +2.0 dB.
Tx TLP
The Transmit TLP setting controls the amount of gain or loss added to a voice signal from the
CPE before it is encoded to digital PCM. To increase the signal level, set the Tx TLP setting
to a negative value (i.e., the more negative the number, the more gain is added). To decrease
the signal level, set the Tx TLP setting to a positive value (i.e., the more positive the number,
the more the signal level is decreased). For example, an incoming signal at -5 dBm can be
increased to -2 dBm by setting the Tx TLP to -3 dB. The Tx TLP range is -10.0 dB to +5.0 dB.
CODING
The Coding setting sets the PCM companding method used for a port. Generally, the North
American T1 environment uses m-law coding, and the International E1 environment uses
a-law or a-inv (inverted A-law) coding. The a-inv setting provides a higher ones density than
a-law. The default coding setting is determined by the type of associated WAN card.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the FXS port
should be forced idle or busy upon declaration of a Carrier Group Alarm (CGA) on the WAN
link to which the port is assigned. In most cases, you should set this parameter to busy. If a
call is in progress when the CGA alarm is received, the system will hold the call for two
seconds, drop it, and then busy out the port to the attached PBX for the duration of the alarm.
Once the alarm clears, the system will automatically place the port back in the idle mode,
making it available to the PBX.
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FXS Coin Card
FXS Coin Card User Screens and Settings
LB
The Loopback field lets you loop the port back toward the network and far end. The dgtl
(digital) loopback sends the incoming digital DS0 signal back to the far end without decoding
it. The anlg (analog) loopback sends the decoded analog signal back to the far end after
decoding and then re-encoding it. Figure 4-3 shows the loopback options, which allow you to
test and troubleshoot the FXS card. To disable a loopback, set this field to off.
FXS Coin Card
Codec
Analog
Loopback
Digital
Loopback
Digital-to-Analog
Convertor
PCM Bus
T1/E1
Network
DS-0
Figure 4-3. FXS Coin Card Loopbacks
PATTRN
The Pattern field selects an outgoing test pattern for the current card port. The test pattern is
generated by the system and sent to the selected port. You can select a different pattern for
each port. The none option disables the test pattern. The D-mW (Digital milliwatt) option
sends a 1 kHz tone at 0.0 dBm. The setting of the Rx TLP setting affects the D-mW signal
level. The quiet option places a 600-ohm termination on the line so that no analog signal is
sent (idle mode).
HYBRID
The Hybrid option assigns a three byte pattern to define the adjustment for return loss (similar
to Build Out Capacitors). The default, set1, balances to the ideal termination of 600 ohms +
2.15 uF. The other settings are reserved for future use.
Voice Cards
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Card User Screens and Settings
Model
FXS Coin
CardNo.
RINGBK
The ringback setting specifies whether a ringback tone is generated by the system and sent
towards the network. Turn this option off when the network service does not provide an
audible ringing tone to the calling party.
RATE
The Rate parameter allows you to use the voice compression capabilities of an ADPCM card.
If that card is not present in the system, the Rate stays at 64k and cannot be changed. The 64k
option is the normal encoding/decoding rate for voice circuits.
ADPCM voice channels are assigned in pairs by designating two voice ports (E&M, FXO, or
FXS) to the same WAN link and time slot, and selecting rate settings for the pair that add up
to 64 kbps. The following combinations are possible:
•
24K,1+40K,2 (24 kb coding on one side of the time slot and 40 kb coding on the other
side of the same time slot)
•
32K,1+32K,2 (32 kb encoding on each side of a time slot)
•
40K,1+24K,2 (40 kb coding on one side of the time slot and 24 kb coding on the other
side)
Number 1 after the rate setting assigns that portion of the voice port pair to the odd side of the
ADPCM pair. Number 2 after the rate setting assigns that portion of the voice port pair to the
even side of the ADPCM pair.
For more information about voice port assignments to an ADPCM card, please refer to the
Server Card Reference Guide.
The number 1 after the rate setting assigns that portion of the voice port pair to the odd side
of the ADPCM pair. The number 2 after the rate setting assigns that portion of the voice port
pair to the even side of the ADPCM pair.
For more information about voice port assignments to the ADPCM card, please refer to the
ADPCM section of the Server Card Reference Guide.
ADPCM
The ADPCM parameter lets the user choose which ADPCM card to place this E&M port. The
default setting is n/a and only changes when a Rate smaller than 64k is selected (see above).
The user is then allowed to select which ADPCM card to use for the port (this assignment is
made by chassis slot number). The options are slots P1, P2, and P3.
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FXS Coin Card
4.3.2
FXS Coin Card User Screens and Settings
Test Screen
The Test option facilitates testing and maintenance by allowing you to monitor and set the
status of the analog interface leads, and to monitor or set the value of the A, B, C, and D
signaling bits of all FXS circuits on that card. In cross-connect systems, the test option also
allows you to apply test patterns and tones towards the user and network sides of the system.
Figure 4-4 shows the FXS Coin Card Test Screen parameters, Table 4-3 lists some actions you
can perform from this screen, and Table 4-4 shows the settings for each parameter.
Figure 4-4. Typical FXS Coin Card Test Screen
Table 4-3. Test Screen Actions
Action
Save
Undo
Refresh
Main
siGmon
Voice Cards
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e. performance and test data).
Returns to the FXS Coin Card Main Screen. If changes are made to settings
and not saved, you will be prompted to save or lose changes.
Used with the user card alarm system to notify you of excessive transitions of
signaling bits.
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Card User Screens and Settings
Model
FXS Coin
CardNo.
Table 4-4. Test Screen Option Settings and Defaults
Parameter
SIG MON
TEST
Tx ABCD
Rx ABCD
T-R-CNTL
TO USER
TO NTWK
Tx ABCD
Rx ABCD
T-R-CNTL
T-R-STAT
MODE
TYPE
STATUS
User Options
off on
off on
mon
mon
mon
n/a
n/a
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
hf-a1 hf-a2 hf-cb rb-a1 rb-a2 rb-cb
Status information only; not editable
Default
off
off
mon
mon
mon
n/a
n/a
n/a
n/a
n/a
n/a
n/a
hf-al
n/a
SIG MON
The Signaling Monitor feature works with the user card alarm system to detect excessive
signaling bit transitions. The system will generate alarms if the number of transitions of any
signaling bit in transmit or receive direction for an active port exceeds 255 in any four second
interval. The options are off and on, and they are toggled by pressing “g” (siGmon command)
in the Test Screen.
TEST
The Test parameter shows if the port is in test mode or not. Inactive ports and ports that are
assigned to inactive WANs will show a test status of n/a. The test status options for active
ports are off and on.
Tx ABCD
The Transmit ABCD setting allows you to either monitor the status of the ABCD signaling
bits being transmitted towards the network or set a specific ABCD pattern for testing the
transmit side of the circuit. The option for this field is mon (monitor).
Rx ABCD
The Receive ABCD setting allows the user to either monitor the status of the ABCD signaling
bits being received from the network or set a specific ABCD pattern for testing the receive
side of the circuit. The option for this field is mon (monitor).
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FXS Coin Card
FXS Coin Card User Screens and Settings
T-R-CNTL
The Tip and Ring Control setting allows you to mon (monitor) the state of the Tip and Ring
leads of an FXS port:
•
RbTo (-48V is applied to the Ring lead and the Tip lead is open)
•
TbRo (-48V is applied to the Tip lead and the Ring lead is open)
•
RbTg (-48V is applied to the Ring lead and the Tip lead is grounded)
•
TbRg (-48V is applied to the Tip lead and the Ring lead is grounded)
TO USER
In cross-connect systems only, the To User parameter allows you to break the circuit and send
a test tone on the user side of the system. The options for this field are PCM, 300Hz, 1kHz,
3kHz, and quiet. Choose PCM if you do not want to inject a tone toward the CPE. In this
case, the PCM signal received from the network is still sent to the CPE in the normal manner.
TO NTWK
In cross-connect systems only, the To Network parameter allows you to break the circuit and
send a test tone on the network side of the system. The options for this field are PCM, 300Hz,
1kHz, 3kHz, and quiet. Choose PCM if you do not want to inject a tone toward the network.
In this case, the PCM signal received from the CPE is still sent to the network in the normal
manner.
Tx ABCD
The Transmit ABCD informational field shows the current values of the ABCD bits that are
being transmitted to the network. If TX ABCD in the top half of the screen is changed via the
set function mentioned above, and the settings are saved by the Save command in the Menu
of Actions, the new bit pattern chosen will be reflected here.
Rx ABCD
The Receive ABCD informational field shows the current values of the ABCD signaling bits
that are received from the network. If RX ABCD in the top half of the screen is changed via
the set function mentioned above, and the settings are saved by the Save command in the
Menu of Actions, the new bit pattern chosen will be reflected here.
Voice Cards
IMACS System Release 5.1.9
4-11
Running
FXS
CoinHead
Card User Screens and Settings
Model
FXS Coin
CardNo.
T-R-CNTL
The Tip and Ring Control informational field shows the current status of the Tip and Ring
leads of the FXS port from the perspective of the system. The possible values are as follows
(b = battery, o = open, g = ground):
•
RbTo (-48V is applied to the Ring lead and the Tip lead is open)
•
TbRo (-48V is applied to the Tip lead and the Ring lead is open)
•
RbTg (-48V is applied to the Ring lead and the Tip lead is grounded)
•
TbRg (-48V is applied to the Tip lead and the Ring lead is grounded)
•
ring (the ringing voltage is applied between Tip and Ring)
T-R-STAT
The Tip and Ring Status informational field describes what the attached device is doing with
the Tip and Ring leads of the FXS port. The possible values are:
•
loop (attached device is connecting Tip and Ring together)
•
rgnd (the Ring lead is grounded by the attached device)
•
open (Ring lead is not connected to either the Tip lead or to ground)
MODE
The Mode informational field shows the current mode of the port that was selected on the main
FXS coin card Screen. Valid settings are fxsc.
TYPE
The Type setting matches the signaling behavior of the FXSC equipment and the remote
switch. These settings are hf-a1 (high frequency - 12kHz), hf-a2 (high frequency - 16kHz),
hf-cb (high frequency-clear back), rb-a1 (reverse battery-answer 1), rb-a2 (reverse
battery-answer 2), and rb-cb (reverse battery-clear back).
STATUS
The Status field shows the current status of the port. Table 4-5 lists and describes all of the
possible conditions reported by this field.
Table 4-5. Status Information Field Settings
Setting
4-12
Meaning
IMACS System Release 5.1.9
Voice Cards
FXS Coin Card
stdby
W stb
W tst
W OOS
noWAN
call
busy
idle
TC
test
maint
4.4
FXS Coin Card Error Messages
The FXS port is in standby.
WAN card to which the FXS port is assigned is in standby.
WAN card to which the FXS port is assigned is under test.
WAN card to which the FXS port is assigned is out of service.
There is no WAN card configured in the slot to which the FXS port is
assigned.
Call set-up is in progress.
Call is in progress.
No call is in progress (port is available for a call).
The port is in Trunk Conditioning because a CGA alarm occurred on the
associated WAN port.
A test is in progress on the port (i.e., you are actively controlling the circuit
by setting values for Tx ABCD or Rx ABCD).
The port is in a maintenance condition.
FXS Coin Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
4.5
FXS Coin Card Troubleshooting
The FXS coin card may be faulty if a voice signal is not received at one end of a circuit, or if
signaling is not detected. The following are possible causes:
•
Faulty receiving CPE at the near end (where the problem was first noticed)
•
Faulty transmitting CPE at the far (opposite) end
•
Faulty cabling between the CPE and FXS coin card at the near end
•
Faulty cabling between the CPE and FXS or FXO coin card at the far end
•
T1 or E1 network failure
•
Improper card configuration at either end (e.g., time slot and/or WAN port assignments)
First, verify that the T1 or E1 network has not failed. Check for a CGA-Red alarm on the
associated WAN port at the end where the incoming VF signal loss is first noticed. The CGA
indicates that the incoming network signal was lost (or that the receiving WAN port is out of
frame). During the CGA, all voice ports with time slots on that WAN port will also be
disabled, and the associated far-end WAN port will be in a CGA-Yellow alarm state. If the
network is faulty, you must clear that trouble to restore your circuits.
If the network is okay, verify that the proper WAN ports and time slots are assigned to the
associated FXS and FXO voice ports at both ends, as previously outlined in this chapter. In a
point-to-point network, the near-end and far-end FX card ports should both be assigned the
same WAN port and time slot number. Also make sure the other parameters (such as the
transmit and receive TLPs) are set properly at both ends.
Voice Cards
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Running
FXS
CoinHead
Card Troubleshooting
Model
FXS Coin
CardNo.
If the FX card port parameters are correct at both ends, and if the network is okay, the trouble
is isolated to the FXS card or the associated port. Proceed as follows:
1. At the far end, activate an analog loopback on the FX card port.
2. Send a 0 dBm (digital milliwatt) test signal toward the CPE at that end. That signal will
be substituted for the normal signal coming from the far-end CPE; it will be sent back
to the CPE at your end via the loopback path.
3. Check your CPE for this signal. If it is present, the far-end CPE or cabling to the far-end
FX card is probably faulty. Disable the loopback and test signal there, and fix the
problem. If you still don’t receive a signal, go to step 4.
4. At your end, go to the FXS Card Main Screen and send a digital milliwatt test tone (0
dBm) toward the CPE. If you still don’t receive a signal, check the cabling from the
FXS card to your CPE, and check the CPE itself. If those items are okay, replace the
FXS card at your end.
5. If the FXS coin card is determined to be faulty, replace it and return the faulty unit for
repair to the location specified by your distributor.
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IMACS System Release 5.1.9
Voice Cards
FXO Coin Card
Introduction
Chapter 5
FXO Coin Card
5.1
Introduction
The Foreign Exchange Office Coin Card manages the flow of FXOC voice traffic over the
network. The FXOC card translates an analog signal to a digital bitstream at the local system
and digital to analog at the remote system. All FXOC cards have a two-wire interface and use
the voice-compression features of the ADPCM resource card.
5.2
FXO Coin Card Descriptions
5.2.1
FXO-C 2W*8-6 Coin Card Description (815960)
The FXO-C 2W*8-6 Coin Card has eight wire ports, providing a 600-ohm terminating
impedance. The card consists of backplane interface circuitry, serial EEPROM for card
identification and adjustment parameters storage, metering pulse interface extension between
Coin Box Office (CO) and coin phone on the CO side, and eight voice line interface circuits.
Each line interface circuit consists of a codec, a hybrid circuit (2 to 4 wire converter), line feed
circuitry and relays to control modes of operation.
5.2.1.1
Card Jumper/Switch Settings
The FXO-C 2W*8-6 Coin Card has the following jumpers on the motherboard. JP1, JP103,
JP203, JP303, JP403, JP503, JP603, JP703 and JP803, and JP2- Global Metering Signal
Frequency Selection (12/16 kHz).
Voice Cards
IMACS System Release 5.1.9
5-1
Model
FXO Coin
CardNo.
Running
FXO
CoinHead
Card Descriptions
FXO-C
2W*8-6
JP2
JP2
P
1
JP103 JP203 JP303 JP403 JP503 JP603 JP703 JP803
US/Euro
Jumper
US/EURO
Jumper
Labeling
Figure 5-1. Jumpers for MRD Mode
5-2
IMACS System Release 5.1.9
Voice Cards
FXO Coin Card
5.2.1.2
FXO Coin Card User Screens and Settings
Installing the Card
Install the FXO Coin Card in any user card slot. These slots are U1 to U8 on the two-sided
chassis and front-loading chassis with power supplies on top, or P1 to P4 and W1 to W4 on
the front-loading chassis with power supplies on the side.
5.3
FXO Coin Card User Screens and Settings
5.3.1
FXO Coin Card Main Screen
FXO Coin Card setting options are displayed in columns on the FXO Coin Card screen, as
shown in Figure 5-2. Table 5-1 lists the settings controlled on the screen along with the
possible and default values.
Figure 5-2. Typical FXO Coin Card Main Screen
The bottom highlighted line of this screen shows various actions that you can perform from
the screen. You perform the desired action by pressing the associated uppercase letter key.
Table 5-1 summarizes these actions. For example, after you configure the FXO coin card
ports, press “s” to save your settings.
Table 5-1. Main Screen Actions
Voice Cards
IMACS System Release 5.1.9
5-3
Model
FXO Coin
CardNo.
Running
FXO
CoinHead
Card User Screens and Settings
Action
Save
Undo
Refresh
Copy
Test
Main
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status).
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
Initiates and monitors testing of all FXO coin card ports. Refer to the Test
section of this chapter.
Returns to the System Main Screen. If changes are made to settings and not
saved, you will be prompted to save or lose changes.
Table 5-2 summarizes the configuration settings for the FXO coin card, along with the
available and factory-default option settings. The parameters and settings are also described
in the following paragraphs.
Table 5-2. Main Screen Option Settings and Defaults
Parameter
STATE
WAN
TS
MODE
SIGNAL
Rx TLP
Tx TLP
CODING
TC CGA
LB
PATTRN
HYBRID
RATE
ADPCM
User Options
stdby actv
none wan (w1-1 through w4-2) serv (P1 through P3)
01-24 01-31
fxoc
hf-a1 hf-a2 hf-cb rb-a1 rb-a2 rb-cb
-10.0 dB to +2.0 dB
-10.0 dB to +5.0 dB
u-law a-inv a-law
idle busy
off dgtl anlg
none D-mW quiet
set1 to set8 user
64K 24K,1 32K,1 40K,1 24K,2 32K,2 40K,2
n/a P1 P2 P3
Notes
1
2
3
4
5
6
Default
stdby
w1-1
01
fxoc
hf-a1
0.0
0.0
u-law
idle
off
none
set1
64K
n/a
Notes:
1. Choosing wan allows you to choose a WAN port (w1-1 through w4-2).
2. Time slot 16 is not available if the port is assigned to an E1 WAN link whose TS 16 is
programmed for cas or ccs.
3. The default is hf-a1 for high frequency.
4. The default is a-inv for E1 and m-law for T1. These values will change depending upon
the WAN link selected.
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Voice Cards
FXO Coin Card
FXO Coin Card User Screens and Settings
5. The default, set1, is the only active option. It balances to the ideal termination of 600
ohms +2.15uF. The other settings are reserved for future use.
6. Choosing a Rate other than 64K allows you to select an ADPCM slot.
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the State setting to stdby (standby) for ports you are
not using or have not yet configured. Set it to actv (active) for ports that are ready for use.
WAN
The WAN setting identifies the WAN link assigned to this port. It is not necessary for all ports
on the same card to be assigned to the same WAN link, or to contiguous time slots on a WAN
link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. Values
range from 1-24 for T1 links and 1-31 for E1 links. Time slot 16 is not available on E1 links
that are programmed for cas or ccs signaling. For a display of the available time slots, refer to
your cross-connect map for the WAN link.
MODE
The Mode setting should be determined by the type of equipment to which you connect the
port. All options use two-wire balanced connections. The fxoc (Foreign Exchange Office
Coin) option allows you to connect the system to a 2 way PBX trunk (both inbound and
outbound calls) or a key system trunk.
SIGNAL
The Signal setting matches the signaling behavior of the FXOC equipment and the remote
switch. These settings are hf-a1(high frequency - 12kHz), hf-a2 (high frequency - 16kHz),
hf-cb (high frequency-clear back), rb-a1 (reverse battery-answer 1), rb-a2 (reverse
battery-answer 2), and rb-cb (reverse battery-clear back).
CAUTION!
Before activating a port, verify the behavior expected by both the station equipment and the
remote central office equipment and ensure that you have the system properly configured.
Voice Cards
IMACS System Release 5.1.9
5-5
Running
FXO
CoinHead
Card User Screens and Settings
Model
FXO Coin
CardNo.
Rx TLP
The Receive Transmission Level Point setting controls the amount of gain or attenuation
added to signals after they are decoded to analog signals. To increase the signal level, set the
Rx TLP setting to a positive number (i.e., the larger the number, the more gain is added). To
decrease the signal level, set the Rx TLP setting to a negative number (i.e., the more negative
the number, the more the signal level is decreased). For example, an incoming signal at -5
dBm can be increased to -3 dBm by setting Rx TLP to +2 dB. Acceptable values range from
-10.0 dB to +2.0 dB.
Tx TLP
The Transmit Transmission Level Point setting controls the amount of gain or attenuation
added to signals after they are received from the local analog port and before they are encoded
to digital PCM signals. To increase the signal level, set the Tx TLP setting to a negative
number (i.e., the more negative the number, the more gain is added). To decrease the signal
level, set the Tx TLP setting to a positive number (i.e., the more positive the number, the more
the signal level is decreased). For example, an incoming signal at -5 dBm can be increased to
-2 dBm by setting Tx TLP to -3 dB. Acceptable values range from -10.0 dB to +5.0 dB.
CODING
The Coding setting sets the PCM companding method used for a port. Generally, the North
American T1 environment uses m-law coding. The International E1 environment uses a-law
or a-inv (inverted A-law) coding, and a-inv provides a higher ones density than a-law. The
coding default is determined by the type of card in the WAN port you select.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the FXOC port
should be placed in idle or busy mode upon declaration of a Carrier Group Alarm (CGA) on
the WAN link to which the port is assigned. In most cases, you should set this parameter to
busy. If a call is in progress when the CGA alarm is received, the system will hold the call for
two seconds, drop it and then busy out the port to the attached PBX for the duration of the
alarm. Once the alarm clears, the system will automatically place the port back in idle mode
thereby making it available to the attached PBX.
LB
The Loopback setting sets the loopback for this circuit to off, dgtl (digital), or anlg (analog).
Figure 5-3 illustrates the loopback options.
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Voice Cards
FXO Coin Card
FXO Coin Card User Screens and Settings
FXO Coin Card
Codec
Analog
Loopback
Digital
Loopback
Digital-to-Analog
Convertor
PCM Bus
T1/E1
Network
DS-0
Figure 5-3. FXO Coin Card Loopbacks
PATTRN
The Pattern setting sets the outgoing test pattern for this analog port. The pattern, generated
by the system, is sent only to the currently selected port. The none option disables sending a
test pattern. The D-mW (Digital milliwatt) option sends a 1 kHz tone at 0.0 dBm. The Rx TLP
setting affects the D-mW signal level. The quiet option places a 900Ω termination on the line
so that no analog signal is sent.
HYBRID
The Hybrid option assigns a three byte pattern to define the adjustment for return loss (similar
to Build Out Capacitors). The default, set1, balances to the ideal termination of 900Ω @
2.15mF, in the case of the 8134 and 8138 cards and to 600Ω @ 2.15mF, in the case of the 8135
and 8139 cards. The other settings are reserved for future use.
RATE
The Rate parameter allows you to utilize the voice compression capabilities of the ADPCM
resource card. If that card is not present in the system, changes cannot be made to this setting.
The 64K option (default) does not use ADPCM resources (it is the normal operation rate for
voice circuits).
ADPCM voice channels are assigned in pairs by designating two voice ports (E&M, FXOC
or FXS) to the same WAN link and time slot and selecting rate settings for the pair that add up
to 64Kbps (i.e., [24K,1+40K,2], [32K,1+32K,2] and [40K,1+24K,2]). The numeral 1 after the
Voice Cards
IMACS System Release 5.1.9
5-7
Running
FXO
CoinHead
Card User Screens and Settings
Model
FXO Coin
CardNo.
rate setting assigns that portion of the voice port pair to the odd side of the ADPCM pair. The
numeral 2 after the rate setting assigns that portion of the voice port pair to the even side of
the ADPCM pair.
For more information about voice port assignments to the ADPCM card, please refer to the
ADPCM chapter in Server Cards Reference Guide.
ADPCM
The ADPCM parameter lets you choose the ADPCM card on which to place this FXO port.
The default setting is n/a and only changes when a Rate smaller than 64k is selected (see
above). You can then select which ADPCM card to use for the port (assignment is made by
chassis slot number). The options are P1, P2, and P3.
5.3.2
Test Screen
The Test option facilitates testing and maintenance by allowing the user to monitor and set the
status of the analog interface leads as well as monitoring and setting the value of the A, B, C
and D signaling bits of all FXOC circuits on that card. In cross-connect systems only, the test
option also allows the user to apply test patterns and tones towards the user and network sides
of the system.
Figure 5-4 shows the FXO Coin Card Test parameters and Table 5-4 shows the settings for
each.
5-8
IMACS System Release 5.1.9
Voice Cards
FXO Coin Card
FXO Coin Card User Screens and Settings
Figure 5-4. Typical FXO Coin Card Test Screen
Table 5-3. Test Screen Actions
Action
Save
Undo
Refresh
Main
siGmon
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e. performance and test data).
Returns to the main terminal screen. If changes are made to settings and not
saved, you will be prompted to save or lose changes.
The signal monitor is used with the user card alarm system to notify the user
of excessive transitions of signaling bits.
Table 5-4. Test Screen Option Settings and Defaults
Parameter
SIG MON
TEST
Tx ABCD
Rx ABCD
T-R-CNTL
TO USER
TO NTWK
Tx ABCD
Voice Cards
User Options
off on
off on
mon set
mon set
mon set
PCM 300Hz 1kHz 3kHz quiet
PCM 300Hz 1kHz 3kHz quiet
Status information only; not editable
IMACS System Release 5.1.9
Default
off
off
mon
mon
mon
PCM
PCM
n/a
5-9
Running
FXO
CoinHead
Card User Screens and Settings
Rx ABCD
T-R-CNTL
T-R-STAT
MODE
TYPE
STATUS
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
Status information only; not editable
Model
FXO Coin
CardNo.
n/a
n/a
n/a
n/a
n/a
n/a
SIG MON
The Signaling Monitor feature works with the user card alarm system to detect excessive
signaling bit transitions. The system will generate alarms if the number of transitions of any
signaling bit in transmit or receive direction for an active port exceeds 255 in any four second
interval. The options are off and on, and they are toggled using the G command in the Menu
of Actions.
TEST
The Test Parameter shows if the port is in the test mode or not. Inactive ports and ports that
are assigned to inactive WANs will show a test status of n/a. The test status options for active
ports are off and on.
Tx ABCD
The Transmit ABCD setting allows you to either monitor the status of the ABCD signaling
bits being transmitted towards the network or set a specific ABCD pattern for testing the
transmit side of the circuit. The option for this field is mon (monitor).
Rx ABCD
The Receive ABCD setting allows you to either monitor the status of the ABCD signaling bits
being received from the network or set a specific ABCD pattern for testing the receive side of
the circuit. The option for this field is mon (monitor). The Rx ABCD bits cannot be set in
bus-connect systems and the only option is mon (monitor).
T-R-CNTL
The Tip and Ring Control setting allows you to only monitor mon the state of the Tip and Ring
leads of an FXO port.
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Voice Cards
FXO Coin Card
FXO Coin Card User Screens and Settings
TO USER
In cross-connect systems only, the To User parameter allows you to break the circuit and send
a test tone toward the user side of the system. The options for this field are PCM, 300Hz, 1
kHz, 3 kHz and quiet. Selecting PCM means that you do not want to inject a tone toward the
user and that the PCM signal received from the network should continue to be sent to the user
port in the normal manner.
This parameter is not supported in bus-connect systems and will always appear as n/a.
TO NTWK
In cross-connect systems only, the To Network parameter allows you to break the circuit and
send a test tone toward the network side of the system. The options for this field are PCM,
300Hz, 1 kHz, 3 kHz and quiet. Selecting PCM means that you do not want to inject a tone
toward the network and that the PCM signal received from the user port should continue to be
sent to the network in the normal manner.
This parameter is not supported in bus-connect systems and will always appear as n/a.
Tx ABCD
The Transmit ABCD setting allows you to either monitor the status of the ABCD signaling
bits being transmitted towards the network or set a specific ABCD pattern for testing the
transmit side of the circuit. The options for this field are mon (monitor) or set. Choosing set
will bring up a four digit field for you to input the ABCD pattern you want to transmit. Any
four digit combination of ones and zeros is acceptable for this setting.
Rx ABCD
The Receive ABCD setting allows you to either monitor the status of the ABCD signaling bits
being received from the network or set a specific ABCD pattern for testing the receive side of
the circuit. The options for this field are mon (monitor) or set. Choosing set will bring up a
four-digit field for you to input the ABCD pattern you want to receive. Any four digit
combination of ones and zeros is acceptable for this setting.
T-R-CNTL
The Tip and Ring Control information field shows the current status of the Tip and Ring leads
of the FXOC port from the perspective of the system. The possible values are:
•
loop - the Tip and Ring leads are tied together
•
open - the Ring lead is not connected to either the Tip or to ground
•
rgnd - the Ring lead is grounded
Voice Cards
IMACS System Release 5.1.9
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Running
FXO
CoinHead
Card User Screens and Settings
Model
FXO Coin
CardNo.
•
lpgnd - the Tip and Ring leads are tied together and the Tip is grounded
•
ring - ringing voltage is being applied between the Tip and Ring
T-R-STAT
The Tip and Ring Status information field describes what the attached device is doing with the
Tip and Ring leads of the FXO port. The possible values are:
ring (attached device is applying ringing voltage between Tip and Ring)
TbRg (attached device is applying -48V battery to Tip and grounding Ring)
ToRo (attached device is leaving both the Tip and Ring leads open)
TgRo (attached device is grounding the Tip lead and is leaving the Ring lead open)
RbTg (attached device is applying -48V battery to Ring and grounding Tip)
RbTo (attached device is applying -48V battery to Ring and leaving Tip open)
TgR* (attached device is grounding Tip, and the Ring lead state is unknown)
ToR* (attached device is leaving Tip open, and the Ring lead state is unknown)
RoT* (attached device is leaving Ring open, and the Tip lead state is unknown)
n/a (information is not available)
MODE
The Mode information field shows the current mode of the port that was selected on the main
FXOC card Screen. Valid settings are fxoc.
TYPE
The Type information field shows the current status of the signal field selected on the main
FXOC card screen for this port. Valid settings for both fxo and fxodn modes are loop (loop),
gs (ground start), lp-fd (loop start-forward disconnect) and R2 (R2). Valid settings for the dpt
mode are dpt (dial pulse terminating), R2 (R2) and (i-R2) immediate R2). The only valid
setting for the mrd mode is mrd (manual ringdown).
STATUS
The Status information field shows the current status of the port. Table 5-5 lists and describes
all of the possible conditions that are reported in this field.
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Voice Cards
FXO Coin Card
FXO Coin Card Error Messages
Table 5-5. Status Information Field Settings
Setting
stdby
W stb
W tst
W OOS
noWAN
call
busy
idle
TC
test
maint
5.4
Meaning
The FXOC port is in standby.
The WAN that the FXOC port is assigned to is in standby.
The WAN that the FXOC port is assigned to is in test.
The WAN that the FXOC port is assigned to is Out Of Service.
There is no WAN card configured in the slot to which the FXOC port is
assigned.
Call set-up is in progress.
A call is in progress.
The FXOC circuit is not being used and is available.
The FXOC circuit is undergoing Trunk Conditioning because of a CGA
alarm on the WAN to which it is assigned.
The operator is actively controlling the circuit by setting values for Tx
ABCD or Rx ABCD.
The FXOC port is in maintenance condition.
FXO Coin Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
5.5
FXO Coin Card Troubleshooting
The FXO coin card may be faulty if a voice signal is not received at one end of a circuit, or if
signaling is not detected. The following are possible causes:
•
Faulty receiving CPE at the near end (where the problem was first noticed)
•
Faulty transmitting CPE at the far (opposite) end
•
Faulty cabling between the CPE and FXO coin card at the near end
•
Faulty cabling between the CPE and FXO or FXS coin card at the far end
•
T1 or E1 network failure
•
Improper card configuration at either end (e.g., time slot and/or WAN port assignments)
First, verify that the T1 or E1 network has not failed. Check for a CGA-Red alarm on the
associated WAN port at the end where the incoming VF signal loss is first noticed. The CGA
indicates that the incoming network signal was lost (or that the receiving WAN port is out of
frame). During the CGA, all voice ports with time slots on that WAN port will also be
disabled, and the associated far-end WAN port will be in a CGA-Yellow alarm state. If the
network is faulty, you must clear that trouble to restore your circuits.
Voice Cards
IMACS System Release 5.1.9
5-13
Running
FXO
CoinHead
Card Troubleshooting
Model
FXO Coin
CardNo.
If the network is okay, verify that the proper WAN ports and time slots are assigned to the
associated FXO and FXS voice ports at both ends, as previously outlined in this chapter. In a
point-to-point network, the near-end and far-end FX card ports should both be assigned the
same WAN port and time slot number. Also make sure the other parameters (such as the
transmit and receive TLPs) are set properly at both ends.
If the FX card port parameters are correct at both ends, and if the network is okay, the trouble
is isolated to the FXO coin card or the associated port. Proceed as follows:
1. At the far end, activate an analog loopback on the FX card port.
2. Send a 0 dBm (digital milliwatt) test signal toward the CPE at that end. That signal will
be substituted for the normal signal coming from the far-end CPE; it will be sent back
to the CPE at your end via the loopback path.
3. Check your CPE for this signal. If it is present, the far-end CPE or cabling to the far-end
FX card is probably faulty. Disable the loopback and test signal there, and fix the
problem. If you still don’t receive a signal, go to step 4.
4. At your end, go to the FXO Coin Card Main Screen and send a digital milliwatt test
tone (0 dBm) toward the CPE. If you still don’t receive a signal, check the cabling from
the FXO coin card to your CPE, and check the CPE itself. If those items are okay,
replace the FXO coin card at your end.
5. If the FXO coin card is determined to be faulty, replace it and return the faulty unit for
repair to the location specified by your distributor.
5-14
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
Introduction
Chapter 6
Low Bit Rate Voice Card
6.1
Introduction
This chapter provides installation, configuration, and troubleshooting information for the Low
Bit Rate Voice Cards (LBRV).
6.2
Low Bit Rate Voice Card Descriptions
6.2.1
Low Bit Rate Voice Card Description (830060)
The LBRV Card is a plug-in user card for the CPU server which provides voice compression
with echo cancellation and Group 3 fax relay capabilities for up to eight 64Kbps voice ports.
This card will accept input directly from voice cards, or voice traffic on WAN links through
the Server. The LBRV card requires a matching card (one for voice compression only, or one
to include fax capabilities) at the other end to decompress the voice channels to 64Kbps
operation.
6.2.1.1
Card Jumper/Switch Settings
There are no jumper or switch settings on this board.
6.2.1.2
Installing the Card
Each system can have up to three LBRV cards installed.
6.3
LBRV Card User Screens and Settings
6.3.1
LBRV Card Main Configuration Screen
You must configure the Low Bit Rate Voice Card for operation after installing it into the
system chassis. This will allow the configuration of the three CPipes to the desired settings.
This screen will also allow access to the Wan-Voice Circuit screen by pressing “W”. The
Performance screen by pressing “P” and the LMI screen by pressing “L”. The compressed
Voice Cards
IMACS System Release 5.1.9
6-1
Model
Low Bit Rate Voice
CardNo.
Running
Head
LBRV
Card
User Screens and Settings
voice traffic can be encapsulated to any of the active CPipes: CPIPE 1 through CPIPE 3. The
Cpipes can be directed to either a WAN or an FRS server card or directly to a Frame Relay
Network.
Node_1 |
U5 LBRV-8 8300 Rev A0-0 Ser 0003
| 12-31-99
14:33
Version
CPIPE 2
CPIPE 3
STATE
stdby
CPIPE 1
stdby
stdby
RATE
1x64
1x64
1x64
WAN/SERVER
w1-1
w1-1
w1-1
table
TS
table
table
FIFO SIZE
4
4
4
FORMAT
HDLC
HDLC
HDLC
DLCI
LMI
n/a
n/a
n/a
n/a
n/a
n/a
DTE PARAM
n/a
n/a
n/a
FAX/VOICE
9.6/8
9.6/8
9.6/8
RATE
1x64
1x64
1x64
TC DELAY
6
6
6
Save | Undo | Refresh | Copy | Perf |
Lmi
| Wan-voice | Main
Figure 6-1. Low Bit Rate Voice Card Main Configuration Screen
The bottom highlighted line of this screen shows various actions that you can perform from
this screen. You perform the desired action by pressing the associated uppercase key. Table
6-1 summarizes these actions. For example, after you configure the Low Bit Rate Voice Card
ports, press “s” to save your settings.
Table 6-1. Main Screen Actions
Action
Save
Undo
Refresh
Copy
6-2
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status),
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
Perf
LBRV Card User Screens and Settings
Displays the Performance screen for the Cpipe on which the cursor is
positioned.
Displays the LMI screen for the Cpipe on which the cursor is positioned.
Displays the Wan-voice configuration screen.
returns to the Systems Main Screen. If changes are made to settings and not
saved, you will be prompted to either save or lose your changes.
Lmi
Wan-voice
Main
Table 6-2 summarizes the configuration settings for the Lot Bit Rate Voice Card, along with
the available and factory-default option settings. The parameters and settings are also
described in the following paragraphs.
Table 6-2. Main Screen Option Settings and Defaults
Parameter
STATE
RATE
WAN/SERVER
WAN
FRS
TS
FIFO SIZE
FORMAT
DLCI
LMI
DTE PARAM
FAX/VOICE RATE
TC DELAY (SECONDS)
User Options
stdby actv
1x64 2x64 3x64
n/a w1-1 w1-2 w2-1 w2-2 w3-1 w3-2 w4-1 w4-2
Pxyy x=1-3 yy=C1-C4, 01-64
table n/z
1 - 10
HDLC frame
16 - 1023 n/a
ansi ccitt lmi n/a
n/a enabled
9.6/8 7.2/8
No TC .5 1 2 3 4 5 6
Default
stdby
64
w1-1
table
4
HDLC
n/a
n/a
n/a
9.6/8
6
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the state setting to stdby (standby) for ports you are not
using or have not yet configured. Set it to actv (active) for ports that are ready for use.
RATE
The RATE field displays the compressed rate of the Cpipes. The values are 1x64 for 64Kbps
pipes, 2x64 for 128Kbps pipes and 3x64 for 192 Kbps pipes. The default is 1x64.
WAN/SRV
The WAN/SRV setting identifies the WAN link or server card assigned to this port. If you
choose wan, you also must select the desired port (w1-1 through w4-2) of a WAN card for
transmission over a T1 or E1 link. Or, choose srvr to assign the card port to a server card in
the system. This can be an ATM or FRS card, which resides in chassis slot P1, P2, or P3. You
must then choose a logical port on that card. The user option is not used.
Voice Cards
IMACS System Release 5.1.9
6-3
Running
Head
LBRV
Card
User Screens and Settings
Model
Low Bit Rate Voice
CardNo.
It is not necessary to assign all ports of the same FXS card to the same WAN link or server
card, or to contiguous time slots on a WAN link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. Values
range from 1 to 24 for T1 links and 1 to 31 for E1 links. Time slot 16 is not available on E1
links that are programmed for cas or ccs signaling. For a display of the available time slots,
refer to the cross-connect map for the WAN link; see the Operations chapter for information
about viewing cross-connect maps.
FIFO SIZE
The FIFO Size should be set to an estimated failure rate of the compressed data network in
units of 24 ms. If the Performance screen shows significant Rx underflows, the Fifo size
should be increased. The Fifo size option is a number from 1 to 10 that will be entered in this
field.
FORMAT
The format setting identifies the type of format used for this CPipe. The options are: HDLC,
Frame Relay, and n/a. HDLC option will be used when the CPipe traffic is directed to the
wan card, toward the T1/E1 network, or the Frame Relay server. Frame Relay option will be
used when the CPipe traffic is directed toward the frame relay network or the Frame Relay
Server.
DLCI
If the Format field is set to Frame Relay, then this field must be configured. Otherwise, it will
show n/a. The DLCI (Data Link Connection Identifier) identifies the frame logical
connection’s within the frame relay. The option is a number from 16 to 1023 that will be
entered in this field.
LMI
If the Format field is set to Frame Relay, then this field must be configured. Otherwise, it will
show n/a. The Local Management Interface setting allows the user to select protocol to be
used by this pipe. The options are ansi, ccitt, and lmi.
DTE PARAM
If the Format field is set to Frame Relay, then this field must be configured. Otherwise, it will
show n/a. The port type for the LBRV is always u-dte for Cpipes directed to the FRS card.
6-4
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
LBRV Card User Screens and Settings
The user may choose from the following options:
•
Error Threshold (N392)
•
Poll Interval Timer (T391)
•
Events Counter (N393)
•
Full Status Frequency (N391)
The Error Threshold (N392) counts the errors that will be tolerated during the last number of
events as set by the Events Counter before declaring that the LMI link is down. The number
of errors options are 1-10. The default is 3.
The Poll Interval Timer (T391) allows the user to select the time interval (in seconds) that
should elapse between “keep alive” messages sent from the corresponding DCE. The number
of seconds options are 5-30. The default is 15 seconds.
The Events Counter (N393) allows the user to select the window size from the number of
events (frames) in which errors will be counted. If Error Threshold (N392) is exceeded within
last N393 frames, the link is declared down. The number of events counted are 1-10. The
default is 4.
The Full Status Frequency (N391) allows the user to select the number of “keep alive”
messages (see T391 above) that should elapse before the full status inquiry message is sent.
The number of messages are 1-255. The default is 6.
FAX/VOICE RATE
The fax/voice rate setting selects the combination of maximum fax transmission rate and the
voice compression rate. Currently, the user may select maximum fax rates of 9.6 Kbps or 7.2
Kbps and a voice compression rate of 8 Kbps by selecting 9.6/8 option or 7.2/8 option
respectively. This setting is available for fax bandwidth conservation if needed.
TC DELAY (SECONDS)
The Trunk Conditioning Delay allows the user to select the time interval (in seconds) that
should elapse without receiving data packets before declaring that the trunk is down. If the
trunk is declared to be down, then trunk conditioning is enabled. It will then put a busy/idle
state on the AB or ABCD signaling bits for two seconds, and then put a busy/idle state on the
signaling bits for the duration of the trunk down time depending on the TC CGA\ user
selection. E&M, FXO loop start, FXS loop start, and plar signaling are supported. The
LBRV-8FAX will send a PCM all ones pattern to the (uncompressed) voice ports. If the “no
TC” option is selected, then trunk conditioning is disabled.
Voice Cards
IMACS System Release 5.1.9
6-5
Model
Low Bit Rate Voice
CardNo.
Running
Head
LBRV
Card
User Screens and Settings
6.3.2
Wan-Voice Time slot Configuration Screen
Figure 6-2 shows the Wan-Voice Time slots Configuration Screen. By Pressing “W” from
Main Screen on any of the CPipe columns will display this screen.
The user voice time slots must be configured for LBRV-8FAX compression from the user card
screens.
The number 1-8 at the top of the screen represent the eight LBRV-8FAX ports. Each port
compresses one 64 Kbps voice traffic channel.
Node_1
|
U5 LBRV-8
8300
Rev A0-0
Ser 0003 | 12-31-99
14:33
Version
2
3
STATE
actv
1
actv
actv
actv
stdby
stdby
stdby
stdby
PIPE
none
none
none
none
none
none
none
none
SUB
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
USER
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
WAN
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
TS
n/a
n/a
n/a
n/a
01
01
01
01
SIG MODE
user
user
user
user
e&m
e&m
e&m
e&m
TC CGA
idle
idle
idle
idle
idle
idle
idle
idle
CODING
n/a
n/a
n/a
4
5
n/a
n/a
6
n/a
7
n/a
8
n/a
Save | Undo | Refresh | Copy | Main
Figure 6-2. Wan-Voice Time slots Configuration Screen
Table 6-3. Wan-Voice Time slots Configuration Screen Menu of Actions
Action
Save
Undo
Refresh
6-6
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e. performance and test data).
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
Copy
LBRV Card User Screens and Settings
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
Returns to the main terminal screen. If changes are made to settings and not
saved, you will be prompted to save or lose changes.
Main
Table 6-4. LBRV Card Setting Options and Defaults
Parameter
STATE
PIPE
SUBCHANNEL
USER
WAN
TS
SIG MODE
TC CGA
CODING
User Options
stdby actv
none 1 2 3
1-8 n/a
n/a uX-01 through uX-08
n/a w1-1 w1-2 w2-1 w2-2 w3-1 w3-2 w4-1 w4-2
none
n/a 01-24 01-31
e&m fxs plar fxo none
n/a idle busy
n/a u-law a-inv
Default
stdby
none
n/a
n/a
none
n/a
none
idle
n/a
STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the state setting to stdby (standby) for ports you are not
using or have not yet configured. Set it to actv (active) for ports that are ready for use.
Voice ports cannot be assigned from the LBRV-8FAX screen, but must be assigned from
their respective cards.
PIPE
The Pipe field refers to the Cpipe through which the compressed data will be transmitted. The
pipe number can range from 1 to 3.
SUB
The Sub field refers to the subchannel within a Cpipe to which the port is assigned. The system
will limit the number of subchannels within a Cpipe as follows: 1-6 (1-5 for 9.6/8 Fax/Voice
Rate) for 64 Kbps, 1-8 for 128 Kbps, and 1-8 for 192 Kbps. If the user selects a sub-channel
Voice Cards
IMACS System Release 5.1.9
6-7
Running
Head
LBRV
Card
User Screens and Settings
Model
Low Bit Rate Voice
CardNo.
that is not available, then the system will prompt: “Sub-channel already in use. Press any
key to continue.” If the user selects an invalid subchannel number, then the system will
prompt: “Value out of range. Press any key to continue.”
USER
The User display identifies the User card and port connected to this LBRV-8FAX port. If a
WAN timeslot is being assigned then this setting will show n/a. For already assigned voice
channels (from a voice card) this field will display the voice card slot and port numbers (i.e.
u5-2 for card in slot U5 and port 2). This is a display field only and is assigned from the
respective user card.
WAN
The WAN setting identifies the WAN link assigned to this port. It is not necessary for all ports
on the same card to be assigned to the same WAN link, or to contiguous time slots on a WAN
link.
TS
The TS setting identifies the time slot on the WAN link to which this port is assigned. Values
range from 1-24 for T1 links and 1-31 for E1 links. Time slot 16 is not available for E1 links
that are programmed for cas or ccs signaling. For a display of the available time slots, refer to
your cross-connect map for the WAN link selected (see the System Operations chapter for
information about viewing cross-connect maps).
SIG MODE
If the assignment of the port is from a WAN, then the options are e&m, fxs, plar, fxo, and
none.
When the assignment is from a voice card, this field is e&m, fxs, plar, or fxo and cannot be
changed from this screen.
TC CGA
The Trunk Conditioning during Carrier Group Alarm setting defines whether the E&M port
should be placed in idle or busy mode upon declaration of a Carrier Group Alarm (CGA) on
the WAN link to which the port is assigned. The TC CGA setting has no effect on to
(Transmission Only) circuits.
6-8
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
LBRV Card User Screens and Settings
CODING
The Coding setting sets the PCM companding method used for a port. In general, in the
T1/North American environment use m-law coding. In the E1/International environment use
a-law or a-inv (inverted A-law) coding; a-inv provides greater 1s density than a-law. The
coding default is determined by the type of card in the WAN port you select.
6.3.3
Performance Screen
Figure 6-3, shows the Performance Screen. Pressing “P” from the CPipe Screen on any of the
CPipe columns will display this screen for that CPipe.
The LBRV-8FAX accumulates statistics to show the user the performance characteristics of
each of the active pipes. Figures are kept by 15 minute (900 seconds) time increments for a
total of 96 periods (24 hours). Each screen shows the current 15 minute segment and the past
12 periods with totals at the bottom of the column. Pressing the "D” key allows the user to
scroll backward through the previous 96 periods. After each period, the oldest 15 minute
segment (after 24 hours) is discarded. Since information is not updated on screen in “real”
time, the user must press the “R” (Refresh) key periodically to obtain up-to-date statistics.
Voice Cards
IMACS System Release 5.1.9
6-9
Model
Low Bit Rate Voice
CardNo.
Running
Head
LBRV
Card
User Screens and Settings
Node_1
Pipe
1
|
U5 LBRV-8
PERFORMANCE
8300
Rev A0-0
Ser 0003 | 12-31-99
14:33
Sec. 058 of 900
PCKT Rx
PCKT Tx
OCTECTS Rx
OCTECTS Tx
DRPRx
DRPTx
Rx UF
STATUS
CURR
2148
2417
376361
3762200
0
0
0
. . . .
01
37590
37590
5851335
5851260
0
0
0
. . . .
02
0
0
0
0
0
0
0
. . . .
03
_____
____
____
____
____
____
____
. . . .
04
_____
____
____
____
____
____
____
. . . .
05
_____
____
____
____
____
____
____
. . . .
06
_____
____
____
____
____
____
____
. . . .
07
_____
____
____
____
____
____
____
. . . .
08
_____
____
____
09
_____
____
____
10
_____
____
____
11
_____
____
____
12
_____
____
____
TOTAL
39738
39737
6227696
STATUS:
S=STDBY
F=FRAME
T=DTE DOWN
6227460
0
0
0
. . . .
C=TRUNK CONDITIONING
Refresh | Clear | pgUp | pgDn | Main
Figure 6-3. LBRV Performance Screen
PIPE
The Pipe setting shows the pipe number associated with the performance statistics on this
screen. This was the port highlighted on the Main screen when the “P” key was pressed.
PCKT RX
The Packet received column tabulates the total number of packets received during the 15
minute period.
PCKT TX
The Packet transmitted column tabulates the total number of packets transmitted during the 15
minute period.
6-10
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
LBRV Card User Screens and Settings
OCTETS RX
The Octets received column tabulates the total number of octets received during the 15 minute
period.
OCTETS TX
The Octets transmitted column tabulates the total number of octets transmitted during the 15
minute period.
DRPRX
The Dropped (frame) received column tabulates the total number of frames dropped on the
pipe while being received.
DRPTX
The Dropped (frame) transmitted column tabulates the total number of frames dropped before
being transmitted during the 15 minute period.
RX UF
The Receive underflow column tabulates the total number of underflows in the receive FIFO
during the 15 minute period. This value may be used to adjust the receive Fifo size as
necessary.
STATUS
The Status column shows different status conditions of the port during the 15 minute period.
The status codes are listed at the bottom of the screen. The status codes are: S (Standby), F
(Frame), T (DTE down), and C (Trunk Conditioning).
Table 6-5. LBRV Performance Screen Actions Menu
Action
Refresh
Clear
pgUp
pgDn
Main
Voice Cards
Function
Since performance statistics are not updated on scree in “real” time, the
refresh key must be pressed to obtain updated performance figures.
Clears all performance statistics for the highlighted port.
Scrolls up through the 96 time segments.
Scrolls down through the 96 time segments.
Returns to the LBRV Cpipe configuration screen.
IMACS System Release 5.1.9
6-11
Model
Low Bit Rate Voice
CardNo.
Running
Head
LBRV
Card
User Screens and Settings
6.3.4
LBRV LMI Screen
Local Management Interface information is display on the LMI screen, as shown in Figure
6-4.
Node_1
|
U5 LBRV-8
8300
LBRV-8FAX
DTE
Rev A0-0
Ser 0003 | 12-31-99
Pipe
Statistics
1
14:33
LINKUP
Status Inq.
TX:
57529
Full Status Inq. TX:
11507
Status RX:
3500
Async Status RX:
0
Seq # Mismatch:
0
Timouts:
0
Bad HDLC frames;
0
Invalid frames:
0
0
No Route frames:
Refresh | Clear | Main
Figure 6-4. LBRV LMI Screen
STATUS INQ. TX
The Status Inquiry Transmitted figure shows the total number of status inquiry requests sent
by the DTE.
FULL STATUS INQ. TX
The Full Status Inquiry Transmitted figure shows the total number of full status inquiries sent
by the DTE.
6-12
IMACS System Release 5.1.9
Voice Cards
Low Bit Rate Voice Card
LBRV Card User Screens and Settings
STATUS RX
The Status Received figure shows the total number of “keep alive” requests received by the
DTE.
ASYNC STATUS RX
Asynchronous status packets received by the DTE are tabulated in this figure.
SEQ. # MISMATCH
The Sequence Number Mismatch figure shows the total number of sequence number errors
that have been received by the DTE.
TIMEOUTS
The Timeouts figure shows the total number of times that expected requests from the DTE are
missed.
BAD HDLC FRAMES
The Bad HDLC Frames figure shows the total number of HDLC errors received on this pipe.
INVALID FRAMES
The Invalid Frames figure shows the total number of short frames or frames with invalid
headers received on this pipe.
NO ROUTE FRAMES
The No Route Frames figure shows the total number of frames received that have incorrect or
unknown DLCI for the port.
Table 6-6. LBRV LMI Screen Actions Menu
Action
Refresh
Clear
Main
Voice Cards
Function
Since LMI statistics are not updated on scree in “real” time, the refresh key
must be pressed to obtain updated performance figures.
Clears all LMI statistics for the highlighted port.
Returns to the LBRV Cpipe configuration screen.
IMACS System Release 5.1.9
6-13
Running
HeadVoice Card Error Messages
Low
Bit Rate
6.4
Model
Low Bit Rate Voice
CardNo.
Low Bit Rate Voice Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
6.5
Low Bit Rate Voice Card Troubleshooting
Contact the technical support organization specified by your distributor.
6-14
IMACS System Release 5.1.9
Voice Cards
P-Phone (PPO/PPS Cards)
Introduction
Chapter 7
P-Phone (PPO/PPS Cards)
7.1
Introduction
The P-Phone Subscriber (PPS) and the P-Phone Office (PPO) Cards extend the features of the
Meridian Business Sets to locations which are beyond the normal distance limitations of the
Meridian Digital Centrex (MDC). The PPO and PPS are 2-wire cards employing Data Over
Voice (DOV) to provide an 8kHz signaling channel using the least significant bit of each PCM
sample. The P-Phone cards are classified as User Cards. The model numbers assigned to the
cards are 812160 (PPS) and 813160 (PPO).
Note:
7.1.1
7.1.2
P-Phone circuits require the Meridian Business SetsTM (MBS) and/or Meridian
Digital CentrexTM (MDC) equipment.
Features
•
Eight circuits per card
•
2-Wire, full duplex voice interface
•
Software provisional options:
•
Level control
•
A-law / Mu-law
•
Capable of transport over 3000’ of 26AWG non-loaded copper pair (including bridge
taps) at the 2-wire VF Ports
•
Hot line card insertion and extraction
•
CE Compliant
P-Phone Compatibility Requirements
The P-Phone Line Cards are compatible with the following equipment:
Switches, PBXs:
•
DMS100 (Class 5 switch)
•
DMS500 (Combination of Class 5 and a tandem switch)
•
DMS10 (Lower capacity switch for rural areas)
Voice Cards
IMACS System Release 5.1.9
7-1
P-Phone (PPO/PPSModel
Cards)No.
RunningCards
Head (PPO/PPS)
P-Phone
•
SL100 (Large Enterprise PBS; same as DMS100)
Meridian Business Sets (Enhanced Business Sets or P-Phones):
M5000 series business sets include:
•
M5009
•
M5112
•
M5209
•
M5212
•
M5312
•
M5316
7.2
P-Phone Cards (PPO/PPS)
7.2.1
P-Phone Cards Description (813160/812160)
The P-Phone service uses an 8kHz out-of-band signaling between the MBS (Meridian
Business Sets) and the DMS (Digital Multiplex System) for sending signaling and supervisory
information. The signaling channel is used by the MBS to activate MDC features such as
Conference Calling, Voice Mail etc. and the SuperNode delivering Caller ID to the MBS. The
8kHz is transmitted using amplitude shift keying (ASK).
The PPO and PPS are passive cards in that they repeat the signaling information end-to-end.
The robbed bit signaling is used to transport the signaling information over the carrier. The
analog data to be transmitted is received by the line card at the 2-wire interface and is encoded
as a PCM sample. The line card will encode the 8kHz signaling is transmitted over the carrier
and will occupy a single 64KBps time slot. The line card will extract the LSB from every PCM
sample received and will generate the 8kHz ASK tone. The PCM sample is also decoded and
the analog signal as well as the 8kHz tone are sent to the 2-wire interface for the SuperNode
switch or the MBS.
The line card uses sealing current to detect if the MBS is disconnected or if the wire between
the Central Office and the phone is damaged. The PPO terminates the sealing current provided
by the SuperNode switch and the PPS generates the sealing current for the MBS.
The terminator is opened or the generator is disabled only if there is a loss of sealing current
at either end or if there is a CGA alarm on the T1. If there is a loss of sealing current at the
office end, it will be reported to the station end and vice versa.
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P-Phone (PPO/PPS Cards)
P-Phone Cards (PPO/PPS)
Notice!
UL Statement
Operation of this Interface is Limited to Intra-Building Connections ONLY.
7.2.1.1
Card Jumper/Switch Settings
The P-Phone PPO and PPS Cards have one, two position jumper on each card. The jumper set
is designated JP2 (US/EUR). One position is for US domestic applications and the other is
EUR for European installations. The default position is US. There are two other jumpers used
for testing, JP1 and JP3. (See Figure 7-1).
P-PHONE
PPO
US/Euro
Jumpers
JP1-Use
for Testing
ONLY
JP3 - Use
for Manufacturing
Test
P
1
Figure 7-1. P-Phone PPO and PPS Cards Jumper Settings
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7.2.1.2
Installing the P-Phone (PPO/PPS) Cards
Install the PPO and PPS Cards in any user card slot. The slots are numbered U1 to U8 on the
two-sided chassis and front-loading chassis with power supplies on top, or P1 to P4 and W1
to W4 on the front-loading chassis with power supplies on the side.
Note:
P-Phone Line Cards can only be cross-connected with WAN cards. They do not
support Server Cards because Server Cards modify the transmission and receive data
streams. Sealing current information specific to P-Phone operation is encoded in this
data and cannot be modified without disrupting proper operation of the service.
7.2.2
P-Phone Cards User Screens and Settings
7.2.3
P-Phone (PPO/PPS) Cards Main Screen
You must configure the P-Phone (PPO/PPS) Cards for operation after installing them into the
system chassis. This is done from the PPO/ PPS Cards Main Screen (see Figure 7-2). To access
that screen, highlight the desired card in the System Main Screen and press <Enter>. This
screen includes one configuration column numbered for each port on the card.
Figure 7-2. PPO/PPS Cards Main Screen
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P-Phone Cards (PPO/PPS)
The bottom highlighted line of the Main Screen shows various actions that you can perform
from this screen. You perform the desired action by pressing the associated uppercase letter
key. Table 7-1 summarizes these actions. For example, after you configure the P-Phone Card
ports, press “s” to save your settings.
Table 7-1. PPO/PPS Cards Main Screen Menu of Actions
Action
Save
Undo
Refresh
Copy
Main
Function
Saves changes to settings.
Returns all settings to the last saved state.
Updates certain time-related information fields that are not automatically
updated (i.e., test status).
Copies the contents of the current column to the next column. Useful if you
change a lot of entries in one column and want to repeat those changes in
subsequent columns.
Returns to the System Main Screen. If changes are made to settings and not
saved, you will be prompted to either save or lose your changes.
Table 7-2 summarizes the configuration settings for the PPO/PPS Cards, along with the
available and factory default option settings. The parameters and settings are also described
in the following paragraphs.
Table 7-2. PPO/PPS Cards Main Screen Option Settings and Defaults
Parameter
STATE
WAN
User Options
stdby actv
none w1-1, w1-2, w2-1, w2-2, w3-1, w3-2, w4-1,
w4-2
01-24 (T1) 01-31 (E1)
-4.0 to 2.0
-5.0 to 2.0
u-law a-inv a-law
set1 set2 set3 set4 set5 set6 set7 set8 user
none, local, rmt (read only)
TS
Rx TLP
Tx TLP
CODING
HYBRID
SCL
Notes
1
2
3
4
Default
stdby
none
1
0.0
0.0
u-law
set1
none
Notes:
1. Choosing wan allows you to choose a WAN port (w1-1 through w4-2).
2. Time slot 16 is not available if the port is assigned to an E1 WAN link whose time slot
16 is programmed for CAS or CCS.
3. The default is u-law for T1 and a-inv for E1. These values will change depending upon
the WAN option module selected.
4. The default (set1) is the only active option. It balances to the ideal termination of 900
ohms + 2.15 uF. The other settings are reserved for future use.
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STATE
The State setting determines whether the port is active or inactive. An inactive port does not
occupy a time slot on a WAN link. Set the State setting to stdby (standby) for ports that are
not to be used, or that have not yet been configured. Set it to actv (active) for ports that are
ready for use.
WAN
The WAN setting identifies the WAN link assigned to this port. When you choose wan, you
must also select the desired port (w1-1 through w4-2) of a WAN Card for transmission over
the T1 or E1 link.
It is not necessary to assign all ports of the same P-Phone Card to the same WAN link, or to
contiguous time slots on a WAN link.
TS
The Time Slot (TS) setting identifies the time slot on the WAN link to which this port is
assigned. Values range from 1 to 24 for T1 links and 1 to 31 for E1 links. Time slot 16 is not
available on E1 links that are programmed for cas or ccs signaling. For a display of the
available time slots, refer to the cross-connect map for the WAN link. See Chapter 3, System
Configuration and Operation, in the System Reference Guide for information about viewing
cross-connect maps.
Rx TLP
The Receive Transmission Level Point (Rx TLP) setting controls the amount of gain or loss
added to the incoming signal after it is decoded to analog. To increase the signal level, set the
Rx TLP setting to a positive value (i.e., the larger the number, the more gain is added). To
decrease the signal level, set the Rx TLP setting to a negative value (i.e., the more negative
the number, the more the signal level is decreased). For example, an incoming signal at -5
dBm can be increased to -3 dBm by setting Rx TLP to +2 dB. The Rx TLP range is -4.0 dB
to +2.0 dB.
Tx TLP
The Transmit Transmission Level Point (TLP) setting controls the amount of gain or loss
added to a voice signal from the Customer Provided Equipment (CPE) before it is encoded to
digital Pulse Code Modulation (PCM). To increase the signal level, set the Tx TLP to a
negative value (i.e., the more negative the number, the more gain is added). To decrease the
signal level, set the Tx TLP setting to a positive value (i.e., the more positive the number, the
more the signal level is decreased). For example, an incoming signal at -5 dBm can be
increased to -2 dBm by setting the Tx TLP to -3 dB. The Tx TLP range is -5.0 dB to +2.0 dB.
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P-Phone Cards (PPO/PPS)
CODING
The Coding setting sets the PCM companding method used for a port. Generally, the North
American T1 environment uses u-law coding, and the International E1 environment uses
a-law or a-inv (inverted A-law) coding. The a-inv setting provides a higher ones density than
a-law. The default coding setting is determined by the setting of the associated WAN card.
HYBRID
The Hybrid option assigns a three-byte pattern to define the adjustment for return loss (similar
to Build Out capacitors). The default, set1, balances to the ideal termination of 900 ohms +
2.15 uF. The other settings are reserved for future use.
SCL
The Sealing Current Loss (SCL) displays the loss of sealing current either at the local or
remote end. This field is read-only and cannot be changed by the operator. The options are
none, local and rmt (remote).
7.2.4
Alarm Handling
The Host CPU will display an alarm when there is a loss of sealing current. The alarms are set
or cleared by the Host based on the information it receives from the Voice CPU. The alarms
can also be cleared by changing the STATE of the port in fault condition from ACTV to
STDBY. The alarm displayed will be:
UCAU2Sealing Current Loss at Local end or Remote end (User Card 2)
The SCL parameter of each port will display the circuit end (local or remote) which is
experiencing the Loss of Sealing Current. The ‘Refresh’ or ‘Save’ menu options on the PPO,
PPS Card screens will update the status of the Sealing Current Loss. This parameter is for
information only and cannot be configured by the user.
When a port is experiencing a loss of Sealing Current at Local or Remote ends, the status of
the port on the System Main screen will also be updated to reflect the alarm conditions. ‘R’
indicates loss at Remote end and ‘A’ indicates loss at the Local end. When the Sealing Current
is restored, the status will reflect the STATE of the port i.e., ‘a’ if port is in ACTV state and
‘s’ if the port is in STDBY state. See Figure 7-3 Main System Screen.
If the User Card Alarm (UCA) is reported by several ports on the PPO card, the alarms are
filtered and only one alarm per card will be reported. This mechanism will prevent overwriting
any critical alarms that are logged in the alarm history.
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P-Phone (PPO/PPSModel
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Figure 7-3. Main System Screen
Table 7-3. Status Indicators
Status
s
a
A
R
7.3
Description
Port standby
Port is active
Loss of sealing current at local end
Loss of sealing current at remote end
P-Phone (PPO/PPS) Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
7.4
P-Phone (PPO/PPS) Card Troubleshooting
A PPO or PPS Card may be faulty if a voice signal is not received at one end of a circuit, or
if signaling is not detected. The following are possible causes:
7-8
•
Faulty reception from CPE at the near end (where the problem was first noticed)
•
Faulty transmission to CPE at the far (opposite ) end
IMACS System Release 5.1.9
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P-Phone (PPO/PPS Cards)
P-Phone (PPO/PPS) Card Troubleshooting
•
Faulty cabling between the CPE and PPS card a the near end
•
Faulty cabling between the CPE and PPO card at the far end
•
T1 network failure
•
Improper card configuration at either end (e.g., time slot and/or WAN port assignments)
First, verify that the T1 network has not failed. Check for a CGA-Red alarm on the associated
WAN port at the end where the incoming VF signal loss is first noticed. The CGA indicates
that the incoming network signal was lost (or that the receiving WAN port is out of frame).
During the CGA, all voice ports with time slots on that WAN port will also be disabled, and
the associated far-end WAN port will be in a CGA-Yellow or Red alarm state. If the network
connection is faulty, you must clear the trouble to restore your circuits.
If the network is okay, verify that the proper WAN ports and time slots are assigned to the
associated PPS and PPO voice ports at both ends, as previously outlined in this chapter. In a
point-to-point network, the near-end and far-end P-Phone card ports should both be assigned
the same WAN port and time slot number. Also make sure the other parameters (such as the
transmit and receive TLPs) are set properly at both ends.
If the P-Phone Card port parameters are correct at both ends, and if the network is okay, the
trouble must be isolated to the P-Phone card or an associated port. Proceed as follows:
1. Check if any UCA alarms are set for the card. If not, go to step 3.
2. Go to the Main System Screen of P-Phone Card, check the ‘SCL’ parameter of the
associated port. if SCL is set to ‘Local’, the local CPE or cabling form CPE to the
P-Phone Card is faulty. If SCL is set to ‘Remote’ the far-end CPE or cabling to the
far-end P-Phone card is faulty. Correct these faults and make sure alarms are clear.
3. If the voice signal is still not received, the P-Phone Cards are determined to be faulty.
Replace it and return the faulty unit for repair to the location specified by your
distributor.
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