Adtran Total Access 750 850 Installation and Maintenance

Section 61175407L1-5B
Issue 2, April 2000
CLEI Code: SIC2VX0KAA
Total Access™ 750/850/1500
QUAD FXO Access Module
Installation and Maintenance
CONTENTS
1. GENERAL ................................................................... 1
2. INSTALLATION .......................................................... 2
3. OPTIONS ..................................................................... 2
4. OPERATION ................................................................ 3
5. TESTING ..................................................................... 4
6. SPECIFICATIONS ....................................................... 5
7. MAINTENANCE ......................................................... 5
8. WARRANTY AND CUSTOMER SERVICE .............. 5
FXO
1175407L1
BUSY
1
2
3
4
FIGURES
Figure 1. TA 750/850/1500 Quad FXO ............................. 1
Figure 2. FXO to FXS Deployment ................................... 2
Figure 3. Circuit Path ......................................................... 2
Figure 4. Connector Pin Assignments ............................... 4
TABLES
Table 1. TA 750 Time Slot Assignments ............................ 3
Table 2. Specifications ........................................................ 5
1. GENERAL
This practice provides installation and maintenance
procedures for the ADTRAN Total Access 750/850/
1500 Quad Foreign Exchange Office Access Module.
Figure 1 is an illustration of the Quad FXO. The unit
is multifunctional and can be provisioned to operate in
one the following modes:
•
•
2-Wire Foreign Exchange Office (2FXO)
Dial Pulse Terminate (DPT)
Revision History
This document has been revised to change
PASSWORD information.
Features
The features of the TA 750/850/1500 Quad FXO, part
number 1175407L1, include the following:
•
•
•
•
•
Provides four individual analog voice
interfaces.
µ-law encoding/decoding.
Supports ground start and loop start signaling
(FXO mode).
Nominal 900 Ω + 2.15 µF 2-wire voice
frequency (VF) interface with DC isolation.
Provides loop reverse battery signaling for DID
PBX extensions (DPT mode).
61175407L1-5B
Figure 1. TA 750/850/1500 Quad FXO
•
•
•
•
•
Transmit and receive attentuation settings of
0 to -9 dB in 0.1 dB increments.
Compliant with Voice Frequency characteristics
and signaling of Telcordia® TR-NWT-000057.
Supports Calling Number Delivery and other
common (CLASS™) service offerings
according to TR TSY 000030 section 3.3.1.1.
Extended temperature range: -40º to 65º C.
UL 1950 compliant.
General Description
The Quad FXO access module provides the interface
between a TA 750/850/1500 Pulse Code Modulation
(PCM) backplane, and a 2-wire voice frequency (VF)
transmission and signaling facility. The unit normally
resides at the central office and is designed for use in
conjunction with the TA 750/850/1500 Quad FXS
which resides at the customer premises.
Figure 2 shows a typical deployment using both Quad
FXO and Quad FXS access modules. The TA
750/850/1500 at the CO combines a number of voice
frequency analog lines then multiplexes them for T1
transmission to the remote TA 750/850/1500 at the
customer premises. The remote multiplexer separates
the T1 transmission to individual analog signals for
delivery to the appropriate Quad FXS.
Trademarks: Any brand names and product names included in this document are
Section 61175407L1-5, Issue 2
trademarks, registered trademarks, or trade names of their respective holders.
1
Figure 2. FXO to FXS Deployment
This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may cause harmful interference, and
(2) this device must accept any interference that may
cause undesired operation.
Changes or modifications not made expressly by
ADTRAN could void the user’s authority to operate
this equipment.
2. INSTALLATION
3. OPTIONS
There are no hardware options on the Quad FXO
access module. The module has factory default
settings for each of the four analog interfaces on the
module. The DB-9 VT 100 craft interface on the
TA 750 BCU, TA 850 RCU or TA 1500 SCU is used
if any other settings or provisioning options are
desired. The factory default setting for the QUAD
FXO interfaces are as follows:
•
•
FXO Mode.
Loop start signaling.
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
After unpacking the unit, inspect it for damage. If
damage is noted, file a claim with the carrier, then
contact ADTRAN Customer Service.
The Quad FXO inserts into any slot, even or odd 1
through 6, of the TA 750, TA 850 or TA 1500 chassis.
To install the Quad FXO, hold the unit by the
faceplate while supporting the bottom side. Align the
card edges to the guide grooves for the designated
slot. Insert the card until the edge connector seats
firmly into the backplane. Lock the unit in place by
pushing in on the locking lever.
Telecommunications Codes
The table below shows the Telecommunications
Codes for the Total Access 750/850/1500 QUAD FXS
Access Module. The Total Access 750/850/1500
QUAD FXS Access Module is intended to be
installed in restricted access locations only (must be
installed in TA 750/850/1500 only) and in equipment
with a Type 'B' or 'E' installation code.
Code
Input
Output
A
–
C
–
X
C
Setting Attenuation With Known TLP
For applications where input and output Transmit
Level Points are known, the transmit and receive
attentuation levels can be calculated to ensure
optimum VF characteristics. This is defined in
AT&T® Publication 43801 which explains that the
value of the digital signal at reference point TLP0
should be equal to 0 dBm0, or a digital milliwatt for
optimum performance (proper volume heard through
the telephone). Refer to Figure 3 which displays the
TLP reference points (input, output, TLP0) and
attenuation parameters.
TRANSMIT ATTENUATION
Determine the input TLP. Then use the following
formula to calculate the amount of transmit
attenuation to add to the circuit:
Tx Attenuation = Input TLP
0 to +9 dB
Input TLP
Point
Transmit Path (To Backplane)
Tx Atten
T
0 dBm0
0 to -9 dB
Rx Atten
0 dBm0
R
IC
TC
PC
-9 to 0 dB
Output TLP
Point
TLP0
0 to -9 dB
TLP0
Receive Path (From Backplane)
Figure 3. Circuit Path
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Section 61175407L1-5, Issue 2
61175407L1-5B
Example: if an input TLP of 3 dB is to produce a level
of 0 dBm0 at TLP 0, then the Transmit Attenuation
should be set to 3.0 dB.
RECEIVE ATTENUATION
Determine the output TLP. Then use the following
formula to calculate the amount of receive attenuation
to add to the circuit:
Rx Attenuation = Output TLP
Example: if 0 dBm0 at TLP 0 is required to produce
an output TLP level of -3 dB, then the Receive
Attenuation should be set to 3 dB.
Electronic Provisioning
The craft interfaces on the TA 750 BCU, TA 850
RCU, or the TA 1500 SCU are used to change default
options and obtain access module status through menu
screens. To access the menu screens, connect a
VT 100 terminal or computer running a terminal
emulation program to the faceplate craft interface
ADMIN port using a standard male-to-female RS-232
DB-9 cable. Craft port settings are as follows:
•
•
•
•
9600 Baud
No parity
8 Data bits
1 Stop bit
WINDOWS HYPERTERMINAL
Windows Hyperterminal can be used as a VT 100
terminal emulation program. Open Hyperterminal by
selecting PROGRAMS / ACCESSORIES /
HYPERTERMINAL. Refer to the Help section of
Hyperterminal for additional information.
4. OPERATION
The Quad FXO initializes and goes operational upon
insertion into an active TA 750/850/1500 chassis.
Initialization with the network is indicated by the
faceplate LEDs.
LED Status
Status of the analog service for each customer loop is
shown by four (green) faceplate LEDs. Indication is
as follows:
Off
Flashing
On
Sequencing
-
On Hook
Ringing
Off Hook (Busy)
Time Slot Unavailable
NOTE
If the unit is inserted into a bank which has its
time slots allocated to the module assigned to
the DSX-1 or Nx56/64 port, the LEDs will
sequence, indicating a problem. The time
slots must be freed up before the unit will
become operational.
Time Slot Assignment
The TA 750/850/1500 platforms can have multiple
time slots in the T1 data stream assigned to each
physical slot in the channel bank. Table 1 outlines the
correlation between the T1 and physical slot for the
TA 750. The TA 1500 allows craft selectable time
slots using the electronic provisioning interface.
Table 1. TA 750 Time Slot Assignments
NOTE
To ensure proper display background, select
VT 100 terminal emulation under SETTINGS.
Physical Slot
T1 Time Slot Assigned
1
1-4
2
5-8
PASSWORD
Upon initial connection, the password option is factory
disabled. To enable the password, select Bank
Controller (1)/ Password Control (8)/ Enable Password
(2). The factory default is PASSWORD in all capital
letters. The password can be changed to a userselected password if desired.
3
9 - 12
4
13 - 16
5
17 - 20
6
21 - 24
MENU NAVIGATION
To traverse through the menus, select the desired entry
and press ENTER. To work backwards in the menu
press the ESC (escape) key.
61175407L1-5B
Section 61175407L1-5, Issue 2
3
Connections
TA 750/850
A single 50-pin male amphenol connector on the rear
of the TA 750/850 chassis provides the interconnect
wiring for the four analog circuits on each access
module. Figure 4 details the pinout of the connector.
TA 1500
Four 50-pin male amphenol connectors on the rear of
the TA 1500 chassis provide the interconnect wiring
for the four analog circuits on each access module.
5. TESTING
A self test is performed on the FXO when inserted
into an active TA 750/TA 850 or TA 1500 chassis.
The test verifies proper operation of FXO circuitry. If
the test is successful all four LEDs turn On in a
predefined sequence, the unit is placed in service, and
the LEDs then return to normal operation showing
current status of the FXO.
25
50
24
49
23
48
22
47
21
20
DIGITAL LOOPBACK TEST
The Digital Loopback Test is used to loopback DS0
data coming from the network for each individual
channel. Received data is latched in on the appropriate
receive time slot on the receive bus. This data is then
placed on the transmit bus in the unit’s transmit time
slot.
NETWORK ON-HOOK / OFF-HOOK TEST
The Network On-hook / Off-hook test is used to test
signaling sent to the network by the unit. When
On-hook Test is selected, On-hook signaling is sent to
the network. When Off-hook Test is selected,
Off-hook signaling is sent to the Network. The
customer loop is forced On-hook while this test is
active.
45
19
44
18
43
17
16
42
41
15
40
14
39
13
12
11
10
Initiated Tests
Tests conducted on the Quad FXO are initiated via the
screen menus and VT 100 terminal.
46
9
8
7
38
37
36
35
34
33
32
6
31
5
30
4
3
29
28
2
27
1
26
P
P
P
Slot 6
P
P
P
P
Slot5
P
P
P
P
Slot 4
P
P
P
P
Slot 3
P
P
P
P
Slot 2
P
P
P
P
P
Slot 1
NC
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
Circuit 4
Circuit 3
Circuit 2
Circuit 1
Circuit 4
Circuit 3
Circuit 2
Circuit 1
Circuit 4
Circuit 3
Circuit 2
Circuit 1
Circuit 4
Circuit 3
Circuit 2
Circuit 1
Circuit 4
Circuit 3
Circuit 2
Circuit 1
Circuit 4
Circuit 3
Circuit 2
Circuit 1
50 PIN
AMP
RECEPTACLE
Figure 4. Connector Pin Assignments
1000 HZ DRS TONE GENERATION TEST
The 1000 Hz DRS (Digital Reference Signal) Tone
Generation Test is used to send DRS signal on the
receive path to the loop. The loop receive level is
determined by the following equation:
Receive Level = 0 dB - Attenuation
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Section 61175407L1-5, Issue 2
61175407L1-5B
6. SPECIFICATIONS
Refer to Table 2 for TA 750/850/1500 Quad FXO
specifications.
Table 2. Specifications
Quad FXO Electrical
Power: 2 Watts
Terminating Impedance: 900 ohms + 2.16µ F
Return Loss: ERL >28 dB
SRL >20 dB
Trans Hybrid Loss: ERL >28 dB
SRL >20 dB
Longitudinal Balance: 200, 500, and 1000 Hz:
>58 dB min., > 63 dB ave
3000 Hz:
>53 dB min., >58 dB ave
Frequency Response: 300 to 3400 Hz:
-0.5 and 1.0 dB
Idle Channel Noise: <20 dBrnC
Signal-to-Distortion Ratio: 0 to -30 dBm0: >33 dB
-30 to -40 dBm0: >27 dB
-40 to -45 dBm0: >22 dB
Physical
8. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within 10
years from the date of shipment if it does not meet its
published specifications or fails while in service (see:
ADTRAN Carrier Networks Equipment Warranty,
Repair, and Return Policy and Procedure, document:
60000087-10A).
Contact Customer And Product Service (CAPS) prior
to returning equipment to ADTRAN.
For service, CAPS requests, or further information,
contact one of the following numbers:
ADTRAN Sales
Pricing and availability
(800) 827-0807
ADTRAN Technical Support
Presales Applications / Post-sale Technical Assistance
(888) 4 -ADTRAN
Standard support hours:
Monday-Friday, 7 a.m. - 7 p.m. CST
Emergency support: 7 days/week, 24 hours/day
Dimensions: 3 1/4" H x 10" D
Weight: 1 lb
Environment
Operating Temperature: -40º to 65º C
Storage Temperature: -40º to 70º C
Relative Humidity: Up to 95% non-condensing
7. MAINTENANCE
The TA 750/850/1500 Quad FXO does not require
routine maintenance for normal operation.
ADTRAN Repair/CAPS
Return for repair / upgrade
(256) 963-8722
Repair and Return Address:
ADTRAN, Inc.
CAPS
901 Explorer Boulevard
Huntsville, Alabama 35806-2807
ADTRAN does not recommend that repairs be
attempted in the field. Repair services are obtained by
returning the defective unit to ADTRAN Customer
Service.
61175407L1-5B
Section 61175407L1-5, Issue 2
5