ADC | HDSL4 | User manual | ADC HDSL4 User manual

HDSL4
USER MANUAL
H4TU-C-319 List 1 Line Unit
Product Catalog: H4TU-C-319-L1
CLEI: VACJNUNE
LTPH-UM-1031-03, Issue 3
Revision History of This Manual
To order copies of this document, use document number LTPH-UM-1031-03.
Issue
Release Date
Revisions Made
1
April 30, 2001
Initial release.
2
March 15, 2002
Include BERT and doublers. Updated pulse attenuation section.
3
September 12, 2003
Added “Maximum Loop Attenuation” to Appendix A - Specifications.
Copyright
September 12, 2003
© 2003 ADC DSL Systems, Inc. All rights reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc.
HiGain is a registered trademark of ADC DSL Systems, Inc. No right, license, or interest to such trademarks is granted
hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark. Other
product names mentioned in this practice are used for identification purposes only and may be trademarks or registered
trademarks of their respective companies.
Disclaimer of Liability
Information contained in this document is company private to ADC DSL Systems, Inc., and shall not be modified, used, copied,
reproduced or disclosed in whole or in part without the written consent of ADC.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice.
In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
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September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Using This Manual
USING THIS MANUAL
The following conventions are used in this manual:
•
Monospace type indicates screen text.
•
Keys you press are indicated by small icons such as Y or ENTER . Key combinations to be pressed
simultaneously are indicated with a plus sign as follows: CTRL + ESC .
•
Items you select are in bold.
•
Three types of messages, identified by icons, appear in text.
Notes contain information about special circumstances.
Cautions indicate the possibility of personal injury or equipment damage.
The Electrostatic Discharge (ESD) symbol indicates that a device or assembly is susceptible to
damage from electrostatic discharge.
For a list of abbreviations used in this document, refer to “Appendix E - Abbreviations” on page 67.
INSPECTING SHIPMENT
Upon receipt of the equipment:
•
Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in
transit, immediately report the extent of damage to the transportation company and to ADC DSL Systems,
Inc. Order replacement equipment, if necessary.
•
Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short
or irregular, contact ADC DSL Systems, Inc. as described in “Appendix D - Product Support” on page 66. If
you must store the equipment for a prolonged period, store the equipment in its original container.
H4TU-C-319 List 1
September 12, 2003
iii
Inspecting Shipment
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LTPH-UM-1031-03, Issue 3
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Table of Contents
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Features ..............................................................................................................................................1
Applications .......................................................................................................................................2
Front Panel __________________________________________________________________________ 3
Installation___________________________________________________________________________ 8
Verification ........................................................................................................................................9
Verification without a Downstream Device ........................................................................9
Verification with a Downstream Device .............................................................................9
Provisioning_________________________________________________________________________ 10
Using the MODE and SEL Pushbuttons ..........................................................................................10
Setting Options through MODE and SEL .........................................................................10
Resetting to Factory Default..............................................................................................11
Displaying System Parameter Settings..............................................................................11
Disabling an Alarm............................................................................................................11
Loopback Modes ...............................................................................................................11
Using a Maintenance Terminal ........................................................................................................12
Connecting to a Maintenance Terminal.............................................................................12
Logon Screen .....................................................................................................................12
Provisioning Tasks...........................................................................................................................15
Setting Date and Time .......................................................................................................15
Setting Circuit ID Numbers ...............................................................................................16
Configuring the System .....................................................................................................17
Clearing the History, Alarm, and Event Log Screens .......................................................24
Monitoring System Activity and Performance ____________________________________________ 25
System Overview .............................................................................................................................25
Using the Monitor Screen to View System Activity........................................................................25
Using the Performance Screens to View Performance Data............................................................28
Performance History at the DS1 Interface.........................................................................28
Performance History at the HDSL4 Interface ...................................................................32
Using the Performance Screens to View Alarm Data......................................................................35
Alarm History at the DS1 Interface ...................................................................................35
Alarm History at the HDSL4 Interface..............................................................................37
Using the Event Log to Track System Events .................................................................................38
Using the Report Menu ....................................................................................................................40
Testing _____________________________________________________________________________ 42
H4TU-C-319 List 1
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v
Table of Contents
LTPH-UM-1031-03, Issue 3
System Alarms................................................................................................................................. 42
Alarm Option for DLC Feed............................................................................................. 44
Retiring System Alarms .................................................................................................... 44
Remote LOS and AIS Response ....................................................................................... 45
OCT55 Test Pattern with AMI Line Code ...................................................................................... 45
Loopback Operation ........................................................................................................................ 46
Generic Loopback Commands.......................................................................................... 47
Special Loopback Commands........................................................................................... 47
Manual Loopback Session ................................................................................................ 48
Loopback Test Procedures .............................................................................................................. 49
General Troubleshooting Tips .......................................................................................... 49
GNLB Test Procedures ..................................................................................................... 51
A3LB Test Procedure........................................................................................................ 52
A5LB Test Procedure........................................................................................................ 53
Testing with H4TU-C BERT Generator.......................................................................................... 56
Testing with H4TU-R BERT Generator.......................................................................................... 57
Appendix A - Specifications ____________________________________________________________ 58
Power Consumption ........................................................................................................................ 60
Maximum Power Dissipation .......................................................................................................... 60
Maximum Current Drain ................................................................................................................. 61
Loop Attenuation, Insertion Loss, and Reach ................................................................................. 61
H4TU-C-319 Card-Edge Connector................................................................................................ 62
Network Management Control Bus .................................................................................. 62
Fuse Alarm ........................................................................................................................ 62
System Alarm Output Pin ................................................................................................. 63
Craft Port ......................................................................................................................................... 63
Appendix B - Functional Operation _____________________________________________________ 64
Timing ............................................................................................................................................. 64
Ground Fault Detection ................................................................................................................... 64
Spectrum Issues ............................................................................................................................... 64
Appendix C - Compatibility____________________________________________________________ 65
Appendix D - Product Support _________________________________________________________ 66
Appendix E - Abbreviations____________________________________________________________ 67
Certification and Warranty ____________________________________________________________ 70
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H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
List of Figures
LIST OF FIGURES
1. H4TU-C-319 List 1 Front Panel......................................................................................................................3
2. Installing the H4TU-C-319 List 1 into a Shelf................................................................................................8
3. Logon Screen.................................................................................................................................................13
4. Config Menu - Date and Time.......................................................................................................................15
5. Inventory Screen............................................................................................................................................16
6. Config Menu..................................................................................................................................................17
7. Config Menu - Standard Options (defaults shown).......................................................................................18
8. Config Menu - ADC Options (defaults shown) ............................................................................................18
9. Config Menu - Set Factory Defaults .............................................................................................................23
10. Config Menu - Master Clear..........................................................................................................................24
11. System Spans.................................................................................................................................................25
12. Monitor Screen - Active Loopback with Alarms ..........................................................................................26
13. H4TU-R DS1 31-Day Performance History .................................................................................................28
14. H4TU-C DS1 25-Hour Performance History................................................................................................29
15. H4TU-C DS1 48-Hour Performance History................................................................................................29
16. H4TU-R DS1 Current Statistics ....................................................................................................................30
17. H4TU-C DS1 Current Statistics ....................................................................................................................30
18. H4TU-C HDSL (Loop 1/Loop 2) 31-Day Performance History ..................................................................32
19. H4TU-C HDSL (Loop 1/Loop 2) 48-Hour Performance History.................................................................32
20. H4TU-C HDSL (Loop 1/Loop 2) 25-Hour Performance History.................................................................33
21. H4TU-C HDSL (Loop 1/Loop 2) Current Statistics .....................................................................................33
22. H4TU-C DS1 Alarm History Screen.............................................................................................................35
23. H4TU-R DS1 Alarm History Screen.............................................................................................................36
24. H4TU-C HDSL Alarm History Screen .........................................................................................................37
25. System Event Log..........................................................................................................................................38
26. Report Menu - Full Report ............................................................................................................................40
27. H4TU-R LOS and AIS Response Priorities ..................................................................................................45
28. Loopback Summary.......................................................................................................................................46
29. Loopback Modes ...........................................................................................................................................50
30. H4TU-C BERT Generator Screen.................................................................................................................56
31. H4TU-R BERT Generator Screen.................................................................................................................57
32. H4TU-C-319 Card-Edge Connector..............................................................................................................62
33. RS-232 Craft Port Pinouts .............................................................................................................................63
34. H4TU-C-319 List 1 Block Diagram..............................................................................................................64
H4TU-C-319 List 1
September 12, 2003
vii
List of Tables
LTPH-UM-1031-03, Issue 3
LIST OF TABLES
1. Front-Panel Description .................................................................................................................................. 4
2. Front-Panel Display Messages........................................................................................................................ 5
3. Navigational Keys for the Maintenance Terminal Screens .......................................................................... 12
4. Logon Screen Menus .................................................................................................................................... 13
5. H4TU-C-319 List 1 Standard Config Menu Options ................................................................................... 19
6. H4TU-C-319 List 1 ADC Config Menu Options ......................................................................................... 20
7. DS1/DSX-1 24-Hour PM Threshold ............................................................................................................ 22
8. Monitor Screen Descriptions ........................................................................................................................ 26
9. Acronyms Used on the DS1 Performance History Screens.......................................................................... 31
10. Acronyms Used on the HDSL4 Performance History Screens .................................................................... 34
11. DS1 Alarm Descriptions ............................................................................................................................... 36
12. HDSL4 Alarm Descriptions.......................................................................................................................... 37
13. Event Log Entry Messages List .................................................................................................................... 39
14. Report Types................................................................................................................................................. 41
15. Front-Panel System Alarms .......................................................................................................................... 42
16. Summary of HDSL4 Loopback and Activation Codes ................................................................................ 51
17. A3LB Addressable Repeater Loopback Commands .................................................................................... 52
18. A5LB Addressable Repeater Loopback Commands .................................................................................... 53
19. BERT Signal Generator Option Settings ...................................................................................................... 56
20. H4TU-C Power Parameters .......................................................................................................................... 60
21. HDSL4 Reach Chart ..................................................................................................................................... 61
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September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Overview
OVERVIEW
The H4TU-C-319 List 1 is the Central Office (CO) side of a T1 transmission system. The ADC® four-wire HDSL2
product family (hereafter referred to as “HDSL4”) is based on the HDSL4 standard ANSI T1.418 Issue 2.
The H4TU-C, when used with an H4TU-R remote unit, transmits a 1.544 Mbps payload up to a maximum distance
of 12 kft. over two unconditioned copper pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach
can be extended to a maximum of 34 kft. The H4TU-C-319 List 1 is designed to mount in 3192 mechanics shelves.
For a list of compatible shelves see “Appendix C - Compatibility” on page 65.
The H4TU-C-319 List 1 complies with the protection switching features of the PSC-606 List 1
protection switching card. See the PSC-606 List 1 technical practice, document number
LTPH-TP-1006-xx for detailed information.
FEATURES
Standard features include:
•
•
•
HDSL4 transmission features
—
Lightning and power cross-protection on HDSL4 interfaces
—
Full-duplex HDSL4 transmission on four wire at 1.568 Mbps
—
Ultra-low wander (Stratum 1 compliant)
—
Grounded loop detection on either HDSL4 spans
—
Spectrum compatibility with Asymmetric Digital Subscriber Line (ADSL) services
—
Bit Error Rate Tester (BERT)
—
Three-span range with two doublers (34 kft, 26 AWG)
Front-panel provisioning features
—
Four-character status display
—
DS1 splitting and bridging access
—
Status Light Emitting Diode (LED)
—
RS-232 craft port for connection to a maintenance terminal
—
MODE and SEL pushbuttons
—
Front-panel dual loopback commands
Maintenance screens for inventory, provisioning, and troubleshooting
—
DS1 and HDSL4 performance monitoring
—
DS1 and HDSL4 alarm histories
—
Payload (PL) and HDSL Generic (HG) loopback source identification
—
Margin Alarm (MAL) threshold
—
Report menu option for downloading status and performance monitoring data to a file
—
Sources sealing current when connected to any locally powered H4TU-R-402
—
Remote access and control of H4TU-R test signal generator
H4TU-C-319 List 1
September 12, 2003
1
Overview
LTPH-UM-1031-03, Issue 3
•
Both doubler and non-doubler applications are compatible with ADSL services in same binder group
•
Configuration options
—
Selectable DSX-1 pre-equalizer
—
Bipolar Violation Transparency (BPVT)
—
Bit Error Rate (BER) alarm
—
Power Back Off Network (PBON) and Power Back Off Customer (PBOC) options for configuring
HDSL4 transmit power levels
—
Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm
—
Remote provisioning
—
Concurrent detection of all loopback activation codes
•
Additional Loopback Timeout (LBTO) settings of 8 hours and 24 hours
•
Network Management and Administration (NMA) interface
DS1 is used throughout this document to refer to either the remote unit’s DS1 interface or the
line unit’s DSX-1 interface.
APPLICATIONS
HDSL4 systems provide a cost-effective, easy-to-deploy method for delivering T1 High Capacity Digital Service
(HCDS) over two pair of wires. HDSL4 systems support a multitude of network connections.
•
The service is deployed over two unconditioned, non-loaded copper pair at 784 kps per loop.
•
Conventional, inline DS1 repeaters are no longer required.
•
Cable pair conditioning, pair separation, and bridged tap removal are not required.
For Span 1, each loop has no more than 47 dB of insertion loss (INSL) at 196 kHz, with driving and terminating
impedances of 135Ω; for Span 2 and Span 3, each loop has no more than 43 dB of insertion loss at 196 kHz. In
general, HDSL4 systems:
2
•
Operate effectively in the same cable binder group with other HDSL4 lines, HDSL, T1, ADSL, SDSL, POTS,
Digital Data Service (DDS), and other transmission schemes.
•
Can be used with customers requiring DS1 service on a temporary or permanent basis.
•
Provide a means of quickly deploying service in advance of fiber-optic transmission systems.
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Front Panel
FRONT PANEL
Figure 1 shows the H4TU-C-319 List 1 front panel. Table 1 on page 4 describes the front-panel components. For
a list of front-panel display messages, refer to Table 2 on page 5. For pinout diagrams of the H4TU-C card-edge
connector and craft port, refer to Figure 32 on page 62 and Figure 33 on page 63, respectively.
H
4
T
U
*
C
List number
3
1
9
1
Status LED
Front-panel display
MODE and SEL pushbuttons
SETUP
M
O
D
E
S
E
L
STATUS
Card handle
(CLEI and ECI bar code
label on outside of handle)
B
R
G
O
U
L
T
I
N
E
DSX-1 access jacks
B
R
G
I
NL
I
N
E
R
S
2
3
2
Craft port
DCE
Figure 1.
H4TU-C-319 List 1
H4TU-C-319 List 1 Front Panel
September 12, 2003
3
Front Panel
LTPH-UM-1031-03, Issue 3
Table 1.
Front-Panel Description
Front-Panel Feature
Function
Front-panel display
Displays four-character status, provisioning, and alarm system messages. The front-panel display
illuminates when power is initially applied. To conserve power the display only remains on for
5 minutes. Using the MODE or SEL pushbuttons reactivates the display and restarts the 5-minute
timer. Refer to Table 2 on page 5 for a listing of the four-character messages.
List number
Identifies the list number of the H4TU-C-319.
MODE and SEL pushbuttons
Permits user options to be monitored and modified without the need of a maintenance terminal.
Used to initiate all HDSL4 loopbacks and to display DSX-1 line parameters and line unit identity.
Status LED
The status LED can report the following conditions:
Off
Line power is off.
Green
Normal operation.
Red
Fuse alarm.
Flashing red
HDSL4 acquisition or system alarm.
Yellow
An H4TU-C-319 Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC) is in
effect.
Flashing yellow
H4TU-C-319 is in an Armed (ARM) state.
Card handle
Provides the human-readable Common Language Equipment Identifier (CLEI) code number and
the Equipment Catalog Item (ECI) bar code number.
DSX-1 access jacks
BRG
Provides non-intrusive bridging jack access to (IN) and from (OUT) the HDSL4 span at the DSX-1
interface. Allows the two DS1 payloads to be monitored.
LINE
Provides splitting jack access to (IN) and from (OUT) the HDSL4 span at the DSX-1 interface.
Breaks the IN and OUT paths to permit test signal insertion and retrieval.
Craft port (RS-232)
4
Provides bidirectional communication between the unit and an external terminal to allow
configuration and performance monitoring through the maintenance terminal screens.
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Front Panel
Table 2 lists the front-panel display messages. The four-character display reports the code of an alarm, loopback,
or diagnostic message and, in some cases, is followed by a second four-character message that modifies the first
message with a value or current configuration setting.
Table 2.
Message
Front-Panel Display Messages
Full Name
Description
ACO
Alarm Cutoff
A system alarm has occurred, and has been retired to an ACO
condition by pressing the SEL pushbutton on the H4TU-C front panel.
ALRM
DBER
DU1U or DU1D
Alarm Condition Exists
DS1 Bit Error Rate
Doubler 1 Upstream or Downstream
Port
Doubler 2 Upstream or Downstream
Port
A system alarm condition is in effect.
A system DS1 BER alarm is in effect and remains in effect until cleared.
Precedes LA, HBR, and MAL and indicates the first H4D doubler HDSL4
upstream or downstream interface.
Precedes LA, HBR, and MAL and indicates the second H4D doubler
HDSL4 upstream or downstream interface.
HBRx
HDSL4 Block Error Rate Loop 1 or
Loop 2
A system HDSL4 Block Error Rate alarm is in effect. (x indicates
Loop 1 or Loop 2.)
LAx
Loop Attenuation Loop 1 or Loop 2
LAIS
Line Alarm Indication Signal
The attenuation on the HDSL4 loop has exceeded the maximum
threshold value. (x indicates Loop 1 or Loop 2.)
Indicates an AIS (unframed all ones) pattern is being received or
transmitted at the H4TU-C DS1 input or output ports.
LLOS
Line (Unit) Loss of Signal
Indicates that no signal is detected at the DSX-1 input to the H4TU-C.
Causes a system alarm.
LOF
Loss of Frame
LOSW
LRAI
Loss of Sync Word
Line RAI
The DS1 input does not contain the ESF or SF frame pattern setting of
the FRMG option.
Indicates that one of the HDSL4 loops has lost synchronization.
Indicates an RAI alarm (yellow) from the CPE with an error-free signal
from the line unit or network. RAI signal is transmitted towards the
network.
MALx
Margin Alarm Loop 1 or Loop 2
PWR FEED GND
PWR FEED OPEN
PWR FEED SHRT
PRMF
Power Feed Ground
Power Feed Open
Power Feed Short
Performance Report Messaging Far End
PRMN
H4TU-R PRM-NE BER threshold has been exceeded at near end.
RAIS
Performance Report Messaging Near End
Remote Alarm Indication Signal
RLOS
Remote (Unit) Loss of Signal
Indicates that no signal is detected at the DS1 input to the H4TU-R.
Causes a system alarm.
RRAI
Remote RAI—Remote Alarm
Indication at the H4TU-R (Net signal
has errors.)
Indicates an RAI alarm (yellow) from the CPE with errors from the line
unit or network. RAI-CI signal is transmitted towards the network.
SPNn
Span Number
Accompanies the LOSW alarm and identifies the span where the LOSW
alarm occurred.
TUC
Transmission Unit Central Office
Precedes DBER, HBR, MAL, LA, and LOF alarms and indicates that the
alarm has occurred at the H4TU-C Central Office unit.
TUR
Transmission Unit Remote End
Precedes DBER, HBR, MAL, LA, and LOF alarms and indicates that the
alarm has occurred at the H4TU-R remote unit.
Continued
ALARM MESSAGES
DU2U or DU2D
H4TU-C-319 List 1
The margin at Loop 1 or Loop 2 of the HDSL4 interface has dropped
below the threshold (0 to 15 dB) set by the operator. (x indicates
Loop 1 or Loop 2.)
The HDSL4 loop is grounded.
Indicates a line power open condition.
Indicates a short between Loop 1 and Loop 2 of the HDSL4 pair.
H4TU-R PRM-FE BER threshold has been exceeded at far end.
Indicates an AIS (unframed all ones) pattern is being received or
transmitted at the H4TU-R DS1 input or output ports.
September 12, 2003
5
Front Panel
LTPH-UM-1031-03, Issue 3
Table 2.
Message
Front-Panel Display Messages (Continued)
Full Name
Description
LOOPBACK MESSAGES
CDU1
Customer Doubler 1 Loopback
DS1 signal from customer is looped back to the customer at H4D1
(111100).
CDU2
Customer Doubler 2 Loopback
CLOC
COLB
CREM
Customer Local Loopback
Central Office Loopback
Customer Remote Loopback
DS1 signal from customer is looped back to the customer at H4D2
(111110).
DS1 signal from customer is looped back to the customer at the H4TU-R.
Dual loopback at the H4TU-C.
DS1 signal from customer is looped back to the customer at the
H4TU-C.
NDU1
NDU2
NLOC
NREM
RULB
SMJK
Network Doubler 1 Loopback
Network Doubler 2 Loopback
Network Local Loopback
Network Remote Loopback
Remote Unit Loopback
Remote SmartJack Loopback
Signal is looped back to the network at H4D1 (110000).
Signal is looped back to the network at H4D2 (111000).
DSX-1 signal is looped back to the network at the H4TU-C.
DSX-1 signal is looped back to the network at the H4TU-R.
Dual loopback at the H4TU-R.
DSX-1 signal is looped back to the network at the H4TU-R SmartJack
module.
DIAGNOSTIC MESSAGES
A=xx
Maximum Loop Attenuation
The Attenuation (A) message appears followed by xx, where xx is the
highest loop attenuation of all HDSL interfaces.
ACQ1 or ACQ2
Acquisition 1 or Acquisition 2
ARM
BAD RT?
System Armed
No Response from H4TU-R
The multiplexers of the H4TU-C and H4TU-R are trying to establish
synchronization over HDSL4 Loop 1 or Loop 2.
Armed to respond to Intelligent Repeater Loop (ILR) codes.
The H4TU-C receives no response from the H4TU-R, and all HDSL4
loop conditions are normal; therefore, the integrity of the H4TU-R or
the HDSL4 loops is questionable.
FERR
HxES
Framing Bit Error Occurred
HDSL4 CRC Error Loop 1 or Loop 2
LBPV
Local Bipolar Violation
1=xx or 2=xx
HDSL4 Loop Margin
Indicates the power of the received HDSL4 signal on each loop relative
to noise (S/N with respect to 21.5 dB). Any value of 6 dB or greater is
adequate for reliable system operation. (xx denotes lowest margin in
dB for Loop 1 and Loop 2.)
MNGD
Managed
PWR FEED OFF
Power Feed Off
The H4TU-C-319 is under control of the HMU-319 network
management unit. In this state, the front-panel craft port and
pushbuttons are disabled.
HDSL4 span power has been turned off by setting the PWRF option to
OFF, or HDSL4 span power has been turned off by use of the A5LB
Intelligent Office Repeater (IOR) powerdown code.
PWR FEED ON
Power Feed On
SIG1 or SIG2
Signaling
Framing bit error occurred at H4TU-C DSX-1 input.
H4TU-C HDSL4 Loop 1 or Loop 2 Cyclical Redundancy Check (CRC)
error. (Loop 1 has display priority over Loop 2.)
A bipolar violation has been received at the DSX-1 input to the
H4TU-C-319.
Indicates that the HDSL4 loop power is applied and neither pair is
grounded.
The transceivers of the H4TU-C and H4TU-R are trying to establish
contact with each other over HDSL4 on Loop 1 or Loop 2.
SYSTEM INFORMATION MESSAGES (a)
VER x.xx
LIST xx
Software Version Number
List Number
The software version number of the H4TU-C-319.
The list number of the H4TU-C-319.
Continued
6
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Front Panel
Table 2.
Front-Panel Display Messages (Continued)
Message
Full Name
Description
FRM xxxx
Frame: SF, ESF, UNFR
Defines the type of frame pattern being received from the DSX-1:
SuperFrame (SF), Extended SuperFrame (ESF), or Unframed (UNFR).
CODE xxxx
Line Code: AMI, B8ZS
The line code that the H4TU-C is receiving at its DSX-1 interface, if the
DS1 option is set to AUTO. Otherwise, it mimics either of the other two
DS1 line codes: Alternate Mark Inversion (AMI) or Bipolar with 8-Zero
Substitution (B8ZS).
LATT xx
MARG xx
Loop Attenuation
Margin
The current loop attenuation threshold setting measured in dB.
The current margin threshold setting measured in dB.
(a) System information messages scroll in the order listed. To scroll through the messages, press the MODE pushbutton for 3 or
more seconds. After system information messages scroll, the front panel displays the line card options (see Table 5 on
page 19 and Table 6 on page 20).
H4TU-C-319 List 1
September 12, 2003
7
Installation
LTPH-UM-1031-03, Issue 3
INSTALLATION
Upon receipt of the equipment, inspect the contents for signs of damage. If the equipment has
been damaged in transit, immediately report the extent of damage to the transportation
company and to ADC.
H4TU-C-319
CO shelf
Figure 2.
Installing the H4TU-C-319 List 1 into a Shelf
When installing an H4TU-C in a chassis, be sure to wear an antistatic wrist strap. Avoid touching
components on the circuit board.
To comply with the intrabuilding wiring requirements of GR-1089 CORE, Section 4.5.9, the
shields of the ABAM-type cables that connect the H4TU-C DSX-1 output ports to the
cross-connect panel must be grounded at both ends.
8
1
Align the H4TU-C with the enclosure slot guides, then push the unit in until it touches the backplane
card-edge connector.
2
Place your thumbs on the front panel and push the H4TU-C into the slot guides until properly seated.
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Installation
VERIFICATION
Once the H4TU-C is installed, verify that it is operating properly. To do this, monitor the following:
•
Status LED
•
Status messages reported by the front-panel display (see Table 2 on page 5)
Verification without a Downstream Device
If there is no downstream device installed:
1
Verify that the H4TU-C powers up. The front-panel display illuminates and reports status messages. (See
Table 2 on page 5 for a list of messages.)
2
Verify that the H4TU-C attempts to communicate with downstream devices (status LED flashes red). Even
if a downstream device is not present, the following events should occur:
a
The front-panel display reports various four-character status messages.
b
The H4TU-C again attempts communication until a downstream device is detected.
Verification with a Downstream Device
If a downstream device has been installed:
1
Verify that the H4TU-C powers up. (The front-panel display illuminates and reports various status messages.)
2
Verify that the H4TU-C attempts to communicate with downstream devices (status LED flashes red). One of
the following occurs:
•
If downstream devices are successfully identified and the HDSL4 loop synchronizes, the H4TU-C status
LED lights steady green. The H4TU-C reports normal margin and loop attenuation messages on the
front-panel display.
•
If downstream devices are not successfully identified, the H4TU-C reports four-character status
messages. The H4TU-C attempts communication again and reports four-character status messages. The
H4TU-C repeats this cycle until a downstream device is detected.
3
If there is more than one span, verify that each subsequent span synchronizes normally by monitoring the
front-panel display messages.
4
If a remote unit is installed, verify that the last span synchronizes normally. The H4TU-C status LED should
light a steady green and the front-panel display should report normal margin messages.
5
Verify that a valid DS1 signal has been applied to the H4TU-C and the H4TU-R.
•
If no DS1 signal is being applied to either the H4TU-C or the H4TU-R inputs, then the appropriate DS1
alarms (LLOS or RLOS) display on the front panel and the status LED flashes red.
•
If a valid DS1 signal is being supplied to the H4TU-C and H4TU-R, then DS1 alarm indications should
be absent and the status LED should be steady green.
H4TU-C-319 List 1
September 12, 2003
9
Provisioning
LTPH-UM-1031-03, Issue 3
PROVISIONING
There are two methods for provisioning:
•
•
Use the MODE and SEL pushbuttons on the front panel of the H4TU-C to:
—
Set system options
—
Reset the H4TU-C to its factory default settings for system options
—
Display system option settings (scroll mode)
—
Select system loopbacks
Use a maintenance terminal (ASCII terminal or a PC running terminal emulation software) connected to the
H4TU-C craft port (or to an HMU craft port) to access the maintenance screens (Figure 3 on page 13). This
gives you full access to all H4TU-C status, history, inventory, and provisioning screens.
The MNGD message displays if the H4TU-C-319 is under HMU management. When this occurs,
the front-panel pushbuttons and craft port are disabled.
No dip switches or jumpers are required to provision the H4TU-C-319 as it contains a
non-volatile RAM (NVRAM) which stores the system option settings. System option settings are
retained if shelf power is lost or the H4TU-C-319 is unplugged.
USING THE MODE AND SEL PUSHBUTTONS
Setting Options through MODE and SEL
To provision the H4TU-C-319 through the MODE and SEL pushbuttons on the front panel:
10
1
Press the MODE pushbutton for 1 second and then release it. The front-panel display alternately shows the
first system parameter and its current setting.
2
Press the SEL pushbutton to step through all possible settings of the selected parameter. (See Table 5 on
page 19 and Table 6 on page 20.)
3
After the desired setting has been selected, press the MODE pushbutton. This updates the current displayed
parameter to the selected setting, then advances to the next configurable parameter. After the last parameter
has been selected, a CONF NO message appears on the front-panel display.
4
Do one of the following:
•
To cancel the session without saving the requested parameter changes, press the MODE pushbutton or
do nothing. (After 30 seconds, the display returns to its normal mode without saving the new changes.)
•
To accept the requested parameter changes, press the SEL pushbutton. (A CONF YES message appears,
and the display returns to its normal mode after saving the new changes.)
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
Resetting to Factory Default
All user options for the H4TU-C-319 List 1 (Table 5 on page 19) can be set to the factory default values using the
MODE and SEL pushbuttons. To set the user options to their default values:
1
Press the SEL pushbutton for 6 seconds until the following message appears:
DFLT NO
2
Press the SEL pushbutton while the DFLT NO message is displayed.
The message changes to DFLT YES indicating the factory default values are now in effect and the display
returns to the normal mode.
To terminate the DFLT mode without setting the factory default values, do one of the following:
•
Press the MODE pushbutton to return to the normal display mode.
•
Wait 30 seconds for the unit to return to the normal display mode.
Displaying System Parameter Settings
To scroll through the current settings of all system parameters, press the MODE pushbutton for 3 or more seconds.
The H4TU-C-319 displays the following parameters:
•
Software version number
•
List number
•
Type of frame pattern received from the DSX-1
•
Line code of the signal received from the DSX-1
•
All user-configured parameter settings
•
Loop attenuation threshold setting
•
Margin alarm threshold setting
Disabling an Alarm
System alarms can be disabled by pressing the SEL pushbutton on the H4TU-C-319 front panel for less than 3
seconds. This executes an ACO and returns the H4TU-C-319 to its non-alarm state. For more information about
alarms, see “System Alarms” on page 42.
Loopback Modes
See “Loopback Operation” on page 46 for instructions on using the MODE and SEL pushbuttons to activate
loopbacks.
H4TU-C-319 List 1
September 12, 2003
11
Provisioning
LTPH-UM-1031-03, Issue 3
USING A MAINTENANCE TERMINAL
Connecting to a Maintenance Terminal
The craft port on the front panel allows you to connect the H4TU-C-319 to a maintenance terminal (ASCII
terminal or PC running a terminal emulation program). Once connected to a maintenance terminal, you can access
the maintenance, provisioning, and performance screens.
To connect to a maintenance terminal:
1
Connect a standard 9-pin terminal cable to the RS-232 craft port (Figure 1 on page 3) on the
H4TU-C-319 List 1 front panel.
2
Connect the other end of the cable to the serial port on the maintenance terminal.
3
Start a terminal emulation program such as Procomm (emulating a VT100 terminal).
4
Configure the maintenance terminal to the following communication settings:
5
•
9600 baud
•
No parity
•
8 data bits
•
1 stop bit
•
Hardware flow control to OFF
If necessary, press
CTRL
+
R
to refresh the HDSL4 logon screen.
Logon Screen
The maintenance terminal screens allow you to monitor, provision, and troubleshoot an HDSL4 system.
To select a menu from the logon screen (Figure 3 on page 13), do one of the following:
•
Press the underlined letter of the menu.
•
Use the
← →
arrow keys to select the menu and press
ENTER .
Table 3 summarizes the navigational keys. They are also listed in the onscreen Help menu. Table 4 on page 13
describes the Logon screen menus.
Table 3.
Navigational Keys for the Maintenance Terminal Screens
Key (a)
Function
SPACEBAR
Cycle through selections.
ENTER
Activate the current setting or choice, or display a menu.
ESC
Return to the parent menu.
or F11 (VT100 only)
↑
or CTRL + E
Select the submenu or item above the current one, or return to the previous menu.
↓
or CTRL + X
Select the submenu or item below the current one.
→
or CTRL + D
Select the menu or item to the right of the current one.
←
or CTRL + S
Select the menu or item to the left of the current one, or return to the previous menu.
CTRL
+ R
Refresh the screen.
(a) Legacy management units require use of control keys instead of arrow keys.
12
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
Most VT100 emulation programs support a print screen option. For Windows-based programs,
such as Procomm or HyperTerminal, refer to the Help menu for instructions.
Menu bar
Monitor
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
+------------------------------------------+
|
|
|
ADC DSL Systems, Inc.
|
|
HDSL4
|
|
|
|
Voice: 800.638.0031
|
|
Fax : 714.730.2400
|
+------------------------------------------+
ID: xxxx--xxxx--xxxx—-xxxx
02/01/2002 12:30:01
Circuit ID
Date and Time
Figure 3.
Table 4.
H4TU-C
Logon Device
System: OK___
System Status
Logon Screen
Logon Screen Menus
Press this key:
To access this menu:
Menu Functions
M
Monitor
Monitors loopbacks and alarms, and provides a graphical representation
of circuit activity, including ES, UAS, SES, and line code.
P
Performance
Provides performance and alarm histories for current, 25-hour, 48-hour,
or 31-day periods for either the DS1 or HDSL4 interface.
E
Event Log
Identifies the 100 most recent system events and reports the date and
time of occurrence.
C
Config
Provides standard configuration options, ADC options, BER tester
(BERT), date and time setting, and a reset option (factory settings). Also
provides a master clear option that clears all performance, alarm, and
event log entries. Selecting the Config menu after a remote logon displays
the BERT Generator menu, which provides access to the BERT Signal
Generator configuration submenu.
I
Inventory
Provides product information about the various devices that are in the
system and lists circuit and device identifications.
O
Report
Provides four types of reports: Full Report, Short Report, System
Information Report, and Event Report.
Continued
H4TU-C-319 List 1
September 12, 2003
13
Provisioning
LTPH-UM-1031-03, Issue 3
Table 4.
14
Logon Screen Menus (Continued)
Press this key:
To access this menu:
Menu Functions
R
Rlogon / Rlogout
Remote logon can be performed from the H4TU-C or the H4TU-R. The
screen displays “Rlogout” when the H4TU-C or H4TU-R is remotely
logged on to the other unit at the end of the circuit.
Remote logon from the H4TU-C will permit viewing of the H4TU-R BERT
Generator configuration submenu.
To log off the remote unit, press R . “Rlogout” changes to “Rlogon.” The
unit is now locally logged on until R is pressed again to reinitiate a
remote logon.
H
Help
Provides a glossary of terms used in the maintenance screens, a list of
navigational keys, print guide, and ADC contact information.
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
PROVISIONING TASKS
After the H4TU-C-319 is successfully installed, perform these basic provisioning tasks:
1
Set the date and time (see “Setting Date and Time” on this page).
2
Set the circuit ID numbers (see “Setting Circuit ID Numbers” on page 16).
3
Make any desired changes to configuration (see “Configuring the System” on page 17).
4
Clear history, alarm, and event log screens to remove miscellaneous data during startup (see “Clearing the
History, Alarm, and Event Log Screens” on page 24).
Setting Date and Time
Monitor
Performance
Event Log
ID: xxxx--xxxx—-xxxx--xxxx
02/01/2002 12:30:01
Figure 4.
C
Config Inventory Report Rlogon
+----------------------+
| Standard Options -> |
| ADC Options
-> |
| BERT Generator
-> |
-> |
| Date and Time
+-------------------------------+
| Date (mm/dd/yyyy): 02/01/2002|
| Time (hh:mm[:ss]): 12:30:01
|
+-------------------------------+
H4TU-C
System: OK___
Config Menu - Date and Time
1
Press
2
Use the
3
Type the date in the format indicated, then press
4
Type the time in the format indicated (entering seconds is optional), then press
H4TU-C-319 List 1
Help
to select the Config menu.
↑
and
↓
arrow keys to select Date and Time, then press
ENTER .
ENTER .
September 12, 2003
ENTER .
15
Provisioning
LTPH-UM-1031-03, Issue 3
Setting Circuit ID Numbers
The Inventory screen provides product information on all units in the system and allows setting of the circuit and
unit identification numbers.
Monitor
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
-------------------------- Product Information ---------------------------Unit
: H4TU-C
H4TU-R
H4DU-1
H4DU-2
Product : H4TU-C-319
H4TU-R-402
H4D-409
H4D-409
List
: 1
1
1
1
Sw Ver
: 4.00
4.00
4.00
4.00
Build # : 08
08
08
08
Checksum : 0xA015
0xA015
0x633C
0x633C
H4 Xcvr : GSPN B165
GSPN B165
GSPN B165
GSPN B165
Serial # : 215689543
215610839
123456789012
123456789012
CLEI
: VACJNUNEAA
VAR1EADAAA
ABCDEFGHIJ
1234567890
Mfg. Date: 9/12/01
7/27/01
11/21/2001
11/20/2001
--------------------
Circuit and Unit Identifications
---------------------
Circuit ID
: xxxx—-xxxx—-xxxx—-xxxx
H4TU-R ID
: yyyy—-yyyy—-yyyy—-yyyy
Circuit Notes:
ID: xxxx--xxxx—-xxxx—-xxxx
02/01/2002 12:30:01
Figure 5.
16
I
H4TU-C
System: OK___
Inventory Screen
1
Press
to select the Inventory screen.
2
Type the Circuit ID number, then press
characters.)
3
Type the ID numbers of all other devices listed in the system, pressing
4
Type any relevant circuit notes, and then press
ENTER . (The Circuit ID number may consist of up to 24 alphanumeric
ENTER
after each entry.
ENTER .
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
Configuring the System
The Config menu (Figure 6) allows you to make the following types of system configuration changes:
•
Standard options (Figure 7 on page 18)
•
ADC options (Figure 8 on page 18)
•
BERT Generator (Figure 30 on page 56)
•
Date and time (see “Setting Date and Time” on page 15)
•
Master clear (see “Clearing the History, Alarm, and Event Log Screens” on page 24)
•
Reset to factory default configuration (Figure 9 on page 23)
Monitor
Performance
Event Log
ID: xxxx--xxxx—-xxxx--xxxx
Config Inventory Report
+----------------------+
| Standard Options -> |
| ADC Options
-> |
| BERT Generator
-> |
| Date and Time
-> |
| Master Clear
|
| Set Factory Defaults |
+----------------------+
02/01/2002 12:30:01
Figure 6.
Rlogon
H4TU-C
Help
System: OK___
Config Menu
Making Changes to Standard and ADC Options
Figure 7 and Figure 8 on page 18 show the Standard and ADC configuration options. Standard options are
supported by HDSL4 units when connected to units from other vendors. ADC options are an extended set of
options available only when using ADC units exclusively. For a description of each option and a list of possible
option settings, refer to Table 5 on page 19 and Table 6 on page 20. To make changes to these options:
C
1
Press
to select the Config menu.
2
Use the
3
Use the arrow keys to select an option.
4
Press the
5
Press
↑
and
↓
arrow keys to select Standard Options or ADC Options, then press
SPACEBAR
ENTER
ENTER .
to cycle through the available settings for that option.
to activate your choice.
The message May need to change MUX option after changing this option
appears when changing the DS1 Line Coding (DS1) or H4TU-C Equalization (EQL) option in the
Standard Options configuration screen. (This applies when the H4TU-C is used in a
Wideband 3190 which contains a multiplexer.)
H4TU-C-319 List 1
September 12, 2003
17
Provisioning
Monitor
LTPH-UM-1031-03, Issue 3
Performance
Event Log
Config Inventory Report Rlogon
Help
+----------------------+
| Standard Options -> |
+---------------------------------------------------+
| Loopback Timeout (LBTO)
: 60 min |
| Loop Attenuation Threshold (LATT) [0-50]: 38 dB
|
| Margin Threshold (MARG)
[0-15]: 4 dB
|
|
| DS1 Frame Formatting (FRMG)
: AUTO
| DS1 Line coding (DS1)
: AUTO
|
| H4TU-C Equalization (EQL)
: 0 ft
|
| H4TU-R Line Buildout (RLBO)
: 0 dB
|
| Alarm Pattern (ALMP)
: AIS
|
| H4TU-R TLOS Loopback (TLOS)
: DIS
|
| Network Loopback Pattern (NLBP)
: AIS
|
| Power Back Off Network (PBON)
: DEF
|
| Power Back Off Customer (PBOC)
: DEF
|
+---------------------------------------------------+
Use <Spacebar> to cycle through option settings and <Enter> to activate
ID: xxxx—-xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 7.
Monitor
Performance
Config Menu - Standard Options (defaults shown)
Event Log
Config Inventory Report Rlogon
Help
+----------------------+
| Standard Options -> |
-> |
| ADC Options
+-----------------------------------------------+
| Line Power Feed (PWRF)
: AUTO |
| Remote Provisioning (RTPV)
: ENA |
| Bipolar Violation Transparency (BPVT) : DIS |
| DS1 BER (DBER)
: DIS |
| HDSL4 BER Threshold (HBER)
: NONE |
| SmartJack Loopback (LPBK)
: ENA |
| Minor Alarm (ALM)
: DIS |
| Remote Disconnect Alarm (RDA)
: ENA |
+-----------------------------------------------+
Use <Spacebar> to cycle through option settings and <Enter> to activate
ID: xxxx—-xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 8.
18
Config Menu - ADC Options (defaults shown)
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
Table 5 describes the Standard Config menu options and lists their menu screen display codes. Table 6 on page 20
describes the ADC Config menu options. Selections in bold type are the factory default settings.
Table 5.
H4TU-C-319 List 1 Standard Config Menu Options
Standard Config
Menu Options
Screen
Display Code
Selection
Description
Loopback Timeout
LBTO
NONE
Disables automatic time-out cancellation of all loopbacks.
20 min
Sets automatic cancellation of all loopbacks to 20 minutes after initiation.
60 min
Sets automatic cancellation of all loopbacks to 60 minutes after initiation.
120 min
Sets automatic cancellation of all loopbacks to 120 minutes after initiation.
8 hr
Sets automatic cancellation of all loopbacks to 8 hours after initiation.
24 hr
Sets automatic cancellation of all loopbacks to 24 hours after initiation.
0 through
50 dB
Determines the maximum loop attenuation before an alarm is declared. Zero
disables the alarm. The loop attenuation threshold cannot be set from the
front-panel pushbuttons.
38 dB
Default value.
0 to 15 dB
Determines the minimum allowable margin below which a system alarm can
occur. Zero disables the alarm. The Margin (Alarm) threshold cannot be set
from the front-panel pushbuttons.
4 dB
Default value.
AUTO
Configures the HDSL4 system to operate in an auto-framing (AUTO) mode. It
detects and locks to both SF or ESF DS1 frame patterns. Line and path
performance parameters are maintained and displayed. Unframed payloads
cause the ES-P and SES-P counters to increment.
SF
Configures the HDSL4 system to search for the SF framing pattern at its DS1
input.
ESF
Configures the HDSL4 system to search for the ESF framing pattern at its DS1
input.
UNFR
Configures the same as AUTO except unframed payloads do not cause the
ES-P and SES-P counters to increment.
AUTO
The H4TU-C and H4TU-R monitor the incoming DS1 bit streams for the B8ZS
code. If the H4TU-R detects this code, the H4TU-C enters B8ZS output mode.
The H4TU-C reverts back to AMI output mode if no B8ZS codes are received
at the H4TU-R input for 5 seconds. Similarly, when the H4TU-C detects the
B8ZS code, the H4TU-R enters the B8ZS mode and returns to AMI mode if no
B8ZS code is received at the H4TU-C input for 5 seconds.
B8ZS
Places both the H4TU-C and H4TU-R into their B8ZS modes.
AMI
Places both the H4TU-C and H4TU-R into their AMI modes.
0 ft
Sets the Equalizer to DSX-1 for 0 to 132 feet.
133 ft
Sets the Equalizer to DSX-1 for 133 to 265 feet.
266 ft
Sets the Equalizer to DSX-1 for 266 to 398 feet.
399 ft
Sets the Equalizer to DSX-1 for 399 to 532 feet.
533 ft
Sets the Equalizer to DSX-1 for 533 to 655 feet.
Loop Attenuation
Threshold
LATT
Margin Threshold
MARG
DS1 Frame
Formatting
FRMG
DS1 Line Coding
See “DS1 Line
Coding (DS1)
Option” on page 21.
H4TU-C Equalization
DS1
EQL
See “H4TU-C
Equalization (EQL)
Option.” on page 21.
H4TU-R Line
Buildout
Alarm Pattern
See “Alarm Pattern
(ALMP) Option.” on
page 22.
RLBO
ALMP
Sets the DS1 receive level output toward the Customer Interface (CI). Line
buildout can only be set through the maintenance screens.
0 dB
Sets the DS1 RLBO level toward the CI to 0 dB.
-7.5 dB
Sets the DS1 RLBO level toward the CI to -7.5 dB.
-15 dB
Sets the DS1 RLBO level toward the CI to -15.0 dB.
AIS
Enables the HDSL4 system to output an AIS payload at its DS1 ports for
LOSW and LOS DS1. For priority resolution, see Figure 27 on page 45.
LOS
Enables the HDSL4 system to output an LOS condition at its DS1 ports for
LOSW and LOS DS1.
Continued
H4TU-C-319 List 1
September 12, 2003
19
Provisioning
LTPH-UM-1031-03, Issue 3
Table 5.
H4TU-C-319 List 1 Standard Config Menu Options (Continued)
Standard Config
Menu Options
Screen
Display Code
Selection
Description
H4TU-R TLOS
Loopback
TLOS
ENA
Enables a logic loopback at the H4TU-R when an LOS occurs at its DS1 input.
For priority resolution, see Figure 27 on page 45.
DIS
Disables TLOS logic loopback.
Network Loopback
Pattern
NLBP
AIS
Enables the H4TU-R to transmit AIS towards the CI for any network loopback.
For priority resolution, see Figure 27 on page 45.
LOS
Enables the H4TU-R to transmit LOS towards the CI for any network
loopback.
Power Back Off PBON
Network
See “Power Back Off
(PBON and PBOC)
Options” on page 22.
DEF
Configures the power output levels of the H4TU-C network unit toward the
customer to comply with the Default template as defined in Section 6.1.4.2 of
ANSI T1.418.
ENH
Configures the power output levels of the H4TU-C network unit toward the
customer to comply with the Enhanced template as defined in Section 6.1.4.2
of ANSI T1.418.
Power Back Off PBOC
Customer
See “Power Back Off
(PBON and PBOC)
Options” on page 22.
DEF
Configures the power output levels of the H4TU-R customer unit toward the
network to comply with the Default template as defined in Section 6.1.4.2 of
ANSI T1.418.
ENH
Configures the power output levels of the H4TU-R customer unit toward the
network to comply with the Enhanced template as defined in Section 6.1.4.2
of ANSI T1.418.
Table 6.
H4TU-C-319 List 1 ADC Config Menu Options
ADC Config Menu
Options
Screen
Selection
Display Code
Description
Line Power Feed
PWRF
OFF
Disables powering to the HDSL4 pair.
LOW
Keeps the HDSL4 line voltage at nominal -185 Vdc.
HIGH
Keeps the HDSL4 line voltage at nominal ±123 Vdc.
AUTO
Keeps the H4TU-C line voltage at -185 Vdc when line powering up to two
devices (one doubler and one remote unit, or two doubler units). When line
powering of more than two devices is required, the line unit automatically
switches to ±123 Vdc.
ENA
Enables remote provisioning.
DIS
Disables remote provisioning.
ENA
Enables BPVs and HDSL4 CRC errors at the DS1 input to be converted into
DS1 BPVs at the DS1 output at the distant end. This makes HDSL4
transparent to BPVs.
DIS
Disables BPV Transparency.
ENA
Enables the fixed 24-hour DS1 BER threshold.
DIS
Prevents the generation of a system alarm due to DS1 BER.
Remote Provisioning RTPV
Bipolar Violation
Transparency
See “Bipolar
Violation
Transparency
(BPVT) Option” on
page 22.
BPVT
DS1 BER Threshold
See “DS1 Bit Error
Rate (DBER) Option”
on page 22.
DBER
Continued
20
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
Table 6.
H4TU-C-319 List 1 ADC Config Menu Options (Continued)
ADC Config Menu
Options
Screen
Selection
Display Code
HDSL4 BER
Threshold
HBER
Description
1E-6
System alarm relay contact closes and the Status LED flashes red when the
Block Error Rate (BER) exceeds 10-6. (Block Error Rate is based on the
definition of Bit Error Rate.)
See “HDSL4 Block
Error Rate Threshold
(HBER) Option” on
page 21 and
“System Alarm
Output Pin” on
page 63.
1E-7
System alarm relay contact closes and the Status LED flashes red when BER
exceeds 10-7.
NONE
Prevents generation of a system alarm due to BER.
SmartJack Loopback LPBK
ENA
Enables the HDSL4 system to recognize all inband SmartJack (SMJK)
loopback commands.
DIS
Configures the HDSL4 system to ignore all inband SmartJack loopback
commands.
ENA
Enables the generation of the output alarm on pin H when a system alarm
condition occurs.
DIS
Disables the generation of the output alarm on pin H when a system alarm
condition occurs.
ENA
Enables a remote DS1 LOS condition at the input to the H4TU-R to generate
an LOS alarm. AIS or LOS (depending on ALMP) is sent towards the network.
DIS
Prevents a remote DS1 LOS condition at the input to the H4TU-R from
causing an LOS alarm. The front-panel Status LED still flashes red and the
ALRM RLOS message appears, but the alarm relay contacts do not close and
LOS is sent towards the network from the H4TU-C instead of AIS.
Minor Alarm
Remote Disconnect
Alarm
ALM
RDA
HDSL4 Block Error Rate Threshold (HBER) Option. The HBER option permits monitoring of loop
integrity and reporting of alarms when excessive errors are detected. The performance monitoring (PM) primitive
used for this purpose is the CRC checksum performed on the HDSL4 frame for both directions of transmission.
It is, therefore, called a block error rate rather than the bit error rate associated with the DS1 interface. The Monitor
screen displays the CRC errors and counts for both the H4TU-C and H4TU-R. The HBER option allows an alarm
to be generated if the total number of CRCs at either the H4TU-C or H4TU-R exceeds the selected BER threshold
during the last 1-minute interval.
•
HBER option = 1E-6. Alarm is generated if CRC > 93
•
HBER option = 1E-7. Alarm is generated if CRC > 9
Once initiated, the HBER count clears when the CRC count drops below the selected threshold. Selecting NONE
inhibits this alarm.
DS1 Line Coding (DS1) Option. The DS1 line code option should always be set to conform to the type of
DS1 service (AMI or B8ZS) being provided by the system. The Auto mode, which can adapt to either AMI or
B8ZS, should only be used in applications that require it (such as when ADC system acts as a standby circuit to
DS1 circuits whose line codes are not known or may be both AMI and B8ZS). This is because the Auto mode
induces one BPV in the DS1 bit stream whenever it switches from AMI to B8ZS. The Auto mode allows both the
H4TU-C and the H4TU-R to set its DS1 output code to that which is being received at the distant end DS1 input.
This forces the input and the output codes in each direction of transmission to be identical.
H4TU-C Equalization (EQL) Option. The equalizer shapes the DS1 output signal of the H4TU-C to conform
to a very specific pulse template when it arrives at the DSX-1 cross-connect point. The degree of pulse-shaping
required is a function of the distance between the H4TU-C’s equipment bay and the DSX-1 panel. Thus, the
equalizer has six discrete settings, in increments of 133 feet to cause the maximized separation of 655 feet.
H4TU-C-319 List 1
September 12, 2003
21
Provisioning
LTPH-UM-1031-03, Issue 3
Alarm Pattern (ALMP) Option. To improve HDSL4 compatibility with the switch-to-protect features used in
Digital Loop Carrier (DLC) feeder applications, the H4TU-C-319 has an ALMP option that allows you to select
either an AIS or LOS DS1 output payload for the following alarms:
•
LOSW on any loop
•
LOS DS1
Bipolar Violation Transparency (BPVT) Option. The H4TU-C-319 improves compatibility with Digital
Loop Carrier (DLC) feeder applications because of its ability to transmit DS1 BPV occurrences between its DS1
interfaces. This feature is required to support protection switching in DLC applications. Each DLC terminal must
be able to monitor the integrity of its Receive DS1 payload and then switch to the protect line when the integrity
of the path drops below specific user selected limits. An essential requirement of this feature is the need for each
DLC terminal to detect BPVs in its DS1 input. Standard HDSL systems correct DS1 BPVs at the input and,
therefore, prevent them from being detected by the DLC terminals to which they are connected. The H4TU-C-319
and its associated remote units remove this limitation and become BPV transparent by detecting and counting
input BPVs at each end and then by replicating them at the DS1 output port of the distant end.
The BPV count is converted into BPVs at the distant end during the following second at a rate of 1 BPV every
128 DS1 bits up to a maximum of 12000 (BER=7.7 x 10-3). This maximum rate is more than adequate since it
exceeds the maximum 10-3 BER required by most DLC systems.
DS1 Bit Error Rate (DBER) Option. The DS1 BER alarm occurs when any of the DS1 or DSX-1
performance monitoring parameters listed in Table 7 exceed the counts shown for the 24-hour period between
12:00:00 AM through 11:59:59 PM. These thresholds correspond to a 10-6 BER. All PM counters clear to zero at
12:00:00 AM or when Master Clear is selected.
Table 7.
DS1/DSX-1 24-Hour PM Threshold
Parameter
Threshold Count
CV-L (BPV)
133,400
CV-P (CRC)
132,960
CV-P (FE in SF)
691
ES-L, ES-P, PRM-NE, PRM-FE
648
SES-L, SES-P
100
UAS-P, UAS-L
10
Power Back Off (PBON and PBOC) Options. Power Back Off Network (PBON) and Power Back Off
Customer (PBOC) allow the HDSL4 circuit to support two transmit power templates: default (DEF), higher level,
and enhanced (ENH), lower level. These are defined in the four-wire section of the ANSI T1.418 Issue 2 HDSL2
standard. Each HDSL4 receiver detects the level it is receiving during the start-up, pre-activation sequence. It then
compares this level to the level it should be receiving according to the PBON and PBOC option settings (DEF or
ENH). If the received level is outside the template limits, the receiver sends a message to the upstream HDSL4
transmitter requesting the proper level. These levels are adjusted only during the start-up routine or if the PBON
or PBOC option settings are changed during normal operation. Since the ENH template levels are up to 15 dBm
below those of the DEF template, the ENH setting can be used to reduce crosstalk levels into adjacent circuits.
(For example, if crosstalk noise is being induced by the H4TU-R, set the PBOC option to its lower (ENH) level
setting. Conversely, if the HDSL4 signal at the H4TU-R is being affected by crosstalk noise induced from adjacent
pairs, set the PBOC option to its higher (DEF) level setting.
22
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Provisioning
Changing these Power Back Off option settings on a live circuit causes the HDSL4 loop to
momentarily drop and then reacquire synchronization. This setting can also affect the operating
margins.
Resetting to Factory Defaults
Resetting the H4TU-C to its original factory settings may cause interruption of service.
To reset the H4TU-C-319 to its original factory defaults:
C
1
Press
2
Use the
3
Press
Y
Monitor
to select the Config menu.
↑
and
↓
arrow keys to select Set Factory Defaults, then press
if you are certain you want to reset the H4TU-C, or press
Performance
Event Log
N
ENTER .
to cancel this action.
Config Inventory Report
+----------------------+
| Standard Options -> |
| ADC Options
-> |
| BERT Generator
-> |
| Date and Time
-> |
| Master Clear
|
| Set Factory Defaults |
+----------------------+
Rlogon
Help
SETTING FACTORY DEFAULTS...SERVICE MAY BE INTERRUPTED! ARE YOU SURE (Y/N)?
ID: xxxx--xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 9.
H4TU-C-319 List 1
Config Menu - Set Factory Defaults
September 12, 2003
23
Provisioning
LTPH-UM-1031-03, Issue 3
Clearing the History, Alarm, and Event Log Screens
Select Master Clear to clear the History, Alarm, and Event Log screens after the system has been installed and is
functioning properly. This removes miscellaneous data acquired during the startup session and ensures collection
of accurate and meaningful data thereafter.
Monitor
Performance
Event Log
Config Inventory Report
+----------------------+
| Standard Options -> |
| ADC Options
-> |
| BERT Generator
-> |
| Date and Time
-> |
|
| Master Clear
| Set Factory Defaults |
+----------------------+
Rlogon
Help
Clear ALL performance, alarm and event log entries. Are you sure (Y/N)?
ID: xxxx--xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 10.
To clear the Event Log, press
E
Config Menu - Master Clear
to select the Event Log screen, then press
L
to clear the screen.
To clear an individual history or alarm screen, do the following:
P
1
Press
2
Press the SPACEBAR to select either interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1
NET HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL),
then press ENTER .
3
Press
4
Press the SPACEBAR to select the type of statistics (Current, Alarm History, 25-Hour History,
48-Hour History, or 31-Day History), and press ENTER after your selection.
↓
to select the Performance screen.
to select statistics.
—
Selecting 31-Day History allows you to clear the current, 25-hour, 48-hour, and 31-day
performance history screens for the selected interface.
—
Selecting Alarm History allows you to clear the alarm history screen for the selected interface. For
information about the DS1 and HDSL4 Alarm screens, see Table 11 on page 36.
5
Press
L
to clear the screen.
6
Press
Y
to confirm.
To clear ALL history, alarm, and event log screens by this method:
24
C
1
Press
to select the Config screen.
2
Use the
3
Press
ENTER
4
Press
Y
↑
and
↓
arrow keys to select Master Clear.
to activate.
to confirm (clear all screens).
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
MONITORING SYSTEM ACTIVITY AND
PERFORMANCE
The HDSL4 system provides the following maintenance screens for monitoring system activity and assessing
performance.
•
The Monitor screens provide a graphical representation of circuit activity and allow initiation of loopbacks.
•
The Performance screens provide current, 25-hour, 48-hour, and 31-day performance histories and a
continuous alarm history.
•
The Event Log provides a description of the 100 most recent events which include their origin, time and date
of occurrence, and message.
SYSTEM OVERVIEW
The H4TU-C-319 List 1 supports up to two doublers with three HDSL4 spans as shown in Figure 11.
Central Office
H4D1
H4TU-C
Span 1
H4D2
Span 2
Span 1
H4TU-R
Span 3
Span 2
Span 1
Figure 11.
2 Doublers
1 Doubler
No Doubler
System Spans
The Monitor and Performance screens provide important activity and performance information about the HDSL4
spans and span devices.
USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY
1
Press
M
to view the system diagram.
Figure 12 on page 26 shows an armed circuit with an active loopback and alarms. Terms used on the system
diagram are defined in the onscreen Help menu glossary. Abnormal situations are highlighted on the diagram.
See Table 8 on page 26 for screen field descriptions.
H4TU-C-319 List 1
September 12, 2003
25
Monitoring System Activity and Performance
DS1 Errors
LTPH-UM-1031-03, Issue 3
Armed Mode
Loop Attenuation
Insertion Loss
HDSL4 Errors
Alarm Type
BERT Status
Help
Monitor Performance Event Log Config Inventory Report Rlogon
BERT Status: ACTIVE
Time Elapsed: 00:00:50 Error Rate: <1.00E-10
M
=16
15
16
17
16
16
LA =17
17
16
16
17
17
ARM
INSL=23
23
22
22
23
23
ES =0
0
0
0
28
0
ESF
SES =0
0
0
0
23
0
ESF
B8ZS
UAS =0
0
0
0
171
151
B8ZS
------->+-----+
LP1
+-----+
LP1
+-----+
LP1
+-----+------>
| TUC |=MAL========| DU1 |============| DU2 |============| TUR |
ESF
|
|
|
|
|
|
|
| ESF
B8ZS | LPF |============|
|============|
|============|
| B8ZS
<-------+-----+
LP2
+-----+
LP2
+-----+
LP2
+-----+<-----ES =6884 M
=15
15
14
15
16
16
ES =0
SES=0
LA =18
17
17
16
17
17
SES=0
UAS=56
INSL=24
23
23
22
23
23
UAS=0
ES =0
0
0
0
2
2
PRM=0
SES =0
0
0
0
1
0
UAS =0
0
0
0
0
0
----------------------------------- LOOPBACKS ------------------------------Active Loopbacks : NLOC-PL
Press <Space> to select LB New Loopback: NLOC – Loopdown All Active Loopbacks
and <Enter> to activate
(LPDN,NLOC,CREM,NREM,CLOC)
ID: xxxx--xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK ___
Active Loopback
Frame Code and Type
Figure 12.
2
To initiate a loopback, press the
your choice.
Margin
System Status
Monitor Screen - Active Loopback with Alarms
SPACEBAR
to cycle through the loopback choices. Press
ENTER
to make
When prompted with the message: Are you sure (Y/N)?, press Y to initiate the loopback or
cancel. For more information about loopbacks and troubleshooting, see “Testing” on page 42.
3
N
to
To initiate a loopdown of all active loopbacks, press the SPACEBAR to select LPDN, then press ENTER .
When prompted with the message: Are you sure (Y/N)?, press Y to initiate the loopdown or N to
cancel.
Table 8.
Monitor Screen Descriptions
Field
Description
Active Loopback
An active loopback is indicated on the lower third of the Monitor screen. Available loopbacks are
indicated by gray text. See Table 16 on page 51 for a summary of the HDSL4 generic loopback
codes and activation methods.
Alarm Type
Indicates type of alarm.
MAL
Margin Alarm—Indicates the margin on HDSL4 loop has dropped below the threshold (0 to 15 dB)
set by the operator.
Armed Mode
Indicates system is in an armed state for an intelligent repeater loopback command.
BERT Status
Provides BERT Generator status, elapsed time, and BERT results.
DS1 Errors
ES Count
Errored Seconds—The sum of the Errored Seconds-Line (ES-L) and Errored Seconds-Path (ES-P)
counts detected on the DS1 input over a 24-hour period. Errors included are: DS1 frame errors,
BPV, and ESF CRC errors.
SES Count
Severely Errored Seconds—The sum of the DS1 Severely Errored Seconds-Line (SES-L) and
Severely Errored Seconds-Path (SES-P) counts over the last 24 hours.
Continued
26
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
Table 8.
Field
UAS Count
Monitor Screen Descriptions (Continued)
Description
Unavailable Seconds—The number of seconds during which the DS1 input signal was absent over
a 24-hour period.
Frame and Code Type
ESF
Type of DS1 framing used on the input stream (SF, ESF, or UNFR).
B8ZS
Type of DS1 line coding used (B8ZS or AMI).
HDSL4 Errors
ES Count
Errored Seconds—The number of 1-second intervals that contained at least one CRC or LOSW
error. This value is a running total of the last 24 Hours.
SES Count
Severely Errored Seconds—The number of 1-second intervals that contain at least 50 CRC errors
or one or more LOSW defects. (An LOSW defect occurs when at least three consecutive HDSL
frames contain one or more frame bit errors.) This value is a running total of the last 24 hours.
UAS Count
Unavailable Seconds—The number of seconds the HDSL4 loop is unavailable. This occurs after
10 contiguous HDSL SES and is retired after 10 contiguous non-SES seconds. This value is a
running total of the last 24 hours.
ID
Circuit identification number.
INSL
Insertion Loss—The signal loss value for a 196 kHz signal over the cable pair.
LA
Loop Attenuation—Indicates the attenuation of the Overlapped Pulse Amplitude Modulation
(OPAM) transmission pulse from the distant end. Proper HDSL4 loop operation requires that this
value be less than 34 dB. This value differs from the insertion loss value of a conventional 196 kHz
signal.
LPF
Line Power Feed—Indicates the HDSL4 line power is on.
M
Margin—The signal-to-noise ratio at all HDSL4 ports, relative to a 10-7 Bit Error Rate.
PL (or HG)
PL displays when the loopback was initiated by a command embedded in the DS1 data path
payload (PL). HG displays when the loopback was initiated from a HDSL Generic (HG) front panel
or by a maintenance terminal loopback command.
PRM
The sum of the Performance Report Messaging-Near End (PRM-NE) and Performance Report
Messaging-Far End (PRM-FE) counts.
System Status
The presence or absence of an alarm condition is indicated on the lower right corner of all screens.
System: OK indicates that there are no alarms present; System: Alarm indicates the presence of an
alarm. Refer to “Using the Performance Screens to View Alarm Data” on page 35.
H4TU-C-319 List 1
September 12, 2003
27
Monitoring System Activity and Performance
LTPH-UM-1031-03, Issue 3
USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA
The Performance screens display:
•
DS1 and HDSL4 statistics in 31-day, 48-hour, 25-hour, and current history reports.
•
Alarm statistics for the HDSL4 (Figure 22 on page 35) or DS1 interfaces (Figure 23 on page 36) on a
continuous basis.
To access the Performance history screens:
P
1
Press
to select the Performance screen.
2
Press the SPACEBAR to select either interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1
NET HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL), then
press ENTER .
3
Press the SPACEBAR to select the type of statistics (Current, Alarm History, 25-Hour History, 48-Hour
History, or 31-Day History), then press ENTER .
Performance History at the DS1 Interface
The performance history for the DS1 interface provides 31-day, 48-hour, 25-hour, and current statistics screens
for the H4TU-C and the H4TU-R (as viewed from the H4TU-C).
Figure 13 is an example of an a DS1 performance history screen at the remote unit. Figure 14 and Figure 15 on
page 29 are examples of DS1 performance history screens at the line unit. Table 9 on page 31 describes the
acronyms used in the performance history screens. Asterisks indicate performance monitoring from the previous
day.
Monitor
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
H4TU-R DS1
31-Day History (Page 1 of 3)
----------------------------------------------------------------------------Date
CV-L
ES-L SES-L UAS-L
CV-P
ES-P SES-P UAS-P PRM-NE PRM-FE
01/18
01/19
01/20
01/21
01/22
01/23
01/24
01/25
01/26
01/27
01/28
01/29
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
86400
86400
86400
86401
86400
86400
86400
86400
86400
86400
86400
86400
-
-
Press: (N)ext Page, (P)revious Page, C(l)ear History
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-R DS1
choices and <Enter> to view
Statistics : 31-Day History
ID: xxxx--xxxx--xxxx—-xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 13.
28
H4TU-R DS1 31-Day Performance History
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitor
Monitoring System Activity and Performance
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
H4TU-C DS1
25-Hour History (Page 1 of 9)
----------------------------------------------------------------------------Time
CV-L
ES-L SES-L UAS-L
CV-P
ES-P SES-P UAS-P
*15:15
*15:30
*15:45
*16:00
16:15
16:30
16:45
17:00
17:15
17:30
17:45
18:00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
900
900
900
900
900
900
900
900
900
900
900
900
Press: (N)ext Page, (P)revious Page, C(l)ear History
----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C DS1
choices and <Enter> to view
Statistics : 25-Hour History
ID: xxxx—-xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 14.
Monitor
Performance
H4TU-C DS1 25-Hour Performance History
Event Log
Config
Inventory
Report
Rlogon
Help
H4TU-C DS1
48-Hour History (Page 1 of 4)
----------------------------------------------------------------------------Time
CV-L
ES-L SES-L UAS-L
CV-P
ES-P SES-P UAS-P
*17:00
*18:00
*19:00
*20:00
*21:00
*22:00
*23:00
*00:00
*01:00
*02:00
*03:00
*04:00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3600
3600
3600
3600
3600
3600
3600
3600
3600
3600
3600
3600
Press: (N)ext Page, (P)revious Page, C(l)ear History
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C DS1
choices and <Enter> to view
Statistics : 48-Hour History
ID: xxxx--xxxx--xxxx—-xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 15.
H4TU-C-319 List 1
H4TU-C DS1 48-Hour Performance History
September 12, 2003
29
Monitoring System Activity and Performance
LTPH-UM-1031-03, Issue 3
Examples of current statistics screens are shown below. Figure 16 and Figure 17 show statistics for the DS1
interface at the remote unit and line unit, respectively. These screens report 1-day, 1-hour, and 15-minute statistics.
Refer to Table 9 on page 31 for descriptions of the kinds of errors reported on these screens.
Monitor
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
H4TU-R DS1 Current Statistics
----------------------------------------------------------------------------1 Day
1 Hour
15 Min
Start
05:57
07:00
07:00
CV-L
ES-L
SES-L
UAS-L
CV-P
ES-P
SES-P
UAS-P
PRM-NE
PRM-FE
B8ZSS
MSEC
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
No PRM Detected
No PRM Detected
0
0
0
0
0
0
Press: C(l)ear Current Statistics
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-R DS1
choices and <Enter> to view
Statistics : Current
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Monitor
0
0
0
0
0
0
0
0
Performance
Figure 16.
H4TU-R DS1 Current Statistics
Event Log
Config
Inventory
Report
Rlogon
Help
H4TU-C DS1 Current Statistics
----------------------------------------------------------------------------1 Day
1 Hour
15 Min
Start
05:57
07:00
07:00
CV-L
ES-L
SES-L
UAS-L
CV-P
ES-P
SES-P
UAS-P
0
0
0
0
0
0
0
4242
B8ZSS
MSEC
0
4242
0
0
0
0
0
0
0
476
0
0
0
0
0
0
0
476
0
0
476
476
Press: C(l)ear Current Statistics
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C DS1
choices and <Enter> to view
Statistics : Current
ID: xxxx--xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 17.
30
H4TU-C DS1 Current Statistics
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
Table 9.
Acronyms Used on the DS1 Performance History Screens
Acronym
Description
Acronym
Description
CV-L
Code Violation - Line
Total BPV count.
SES-P
ES-L (b)
Errored Seconds - Line
Seconds with BPV ≥1.
UAS-P
SES-L
Severely Errored Seconds - Line
PRM-NE (c)
Seconds with BPV plus EXZ ≥1544 or LOS ≥1.
UAS-L
Unavailable Seconds - Line
Seconds with LOS ≥1.
PRM-FE (c)
CV-P
Code Violation - Path
Total count of SF frame bit (FB) errors or
CRC(ESF) errors.
Errored Seconds - Path
Seconds with SEF (f), CRC (ESF), or
FE (a)(SF) ≥1.
B8ZSS (d)
Severely Errored Seconds - Path
Seconds with SES or CRC(ESF) ≥320 or
FE (a)(SF) ≥8 (FT + FS).
Unavailable Seconds - Path
A second of unavailability based on SES-P or
AIS ≥1.
Performance Report Messaging - Near End
The PRM from CPE indicates errors, and the
signal received from the network at the
remote is error-free.
Performance Report Messaging - Far End
The PRM from the network indicates errors,
and the signal received from the CPE is
error-free.
B8ZS Errored Seconds
Seconds with B8ZS detection when AMI
option is active.
Monitored Seconds of the current
(15-minute/1-hour/1-day) screen.
ES-P (e)
(a)
(b)
(c)
(d)
(e)
(f)
MSEC (d)
FE is a frame bit error.
Line (L) refers to the AMI DS1 line used to transport the payload.
Only displays on H4TU-R Performance History screens.
Displays on the DS1 Current Statistics screens.
Path (P) refers to the total framed payload being transported between two points.
Severely Errored Frame–Two or more frame bit errors occurring in a 0.75 ms interval for SF or a 3 ms interval for ESF.
H4TU-C-319 List 1
September 12, 2003
31
Monitoring System Activity and Performance
LTPH-UM-1031-03, Issue 3
Performance History at the HDSL4 Interface
The HDSL4 interface has 31-day, 48-hour, 25-hour, and current statistic screens for the H4TU-C. Figure 18 and
Figure 19 below are examples of 31-day and 48-hour performance history screens. Figure 20 on page 33 is an
example of a 25-hour performance history screen. Refer to Table 10 on page 34 for descriptions of the kinds of
errors reported on all HDSL4 performance screens. Asterisks indicate performance monitoring from the previous
day.
Monitor
Performance
Event Log
Config
Inventory
Report
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H4TU-C HDSL
31-Day History (Page 1 of 3)
LP1/LP2
----------------------------------------------------------------------------Date
CV
ES
SES
UAS
LOSWS
01/19
01/20
01/21
01/22
01/23
01/24
01/25
01/26
01/27
01/28
01/29
01/30
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
Press: (N)ext Page, (P)revious Page, C(l)ear History
----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C HDSL
choices and <Enter> to view
Statistics : 31-Day History
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 18.
Monitor
H4TU-C HDSL (Loop 1/Loop 2) 31-Day Performance History
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
H4TU-C HDSL
48-Hour History (Page 1 of 4)
LP1/LP2
----------------------------------------------------------------------------Time
CV
ES
SES
UAS
LOSWS
*08:00
*09:00
*10:00
*11:00
*12:00
*13:00
*14:00
*15:00
*16:00
*17:00
*18:00
*19:00
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
Press: (N)ext Page, (P)revious Page, C(l)ear History
----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C HDSL
choices and <Enter> to view
Statistics : 48-Hour History
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 19.
32
H4TU-C HDSL (Loop 1/Loop 2) 48-Hour Performance History
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitor
Monitoring System Activity and Performance
Performance
Event Log
Config
Inventory
Report
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Help
H4TU-C HDSL
25-Hour History (Page 1 of 9)
LP1/LP2
----------------------------------------------------------------------------Time
CV
ES
SES
UAS
LOSWS
*06:45
*07:00
*07:15
*07:30
07:45
08:00
08:15
08:30
08:45
09:00
09:15
09:30
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
Press: (N)ext Page, (P)revious Page, C(l)ear History
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C HDSL
choices and <Enter> to view
Statistics : 25-Hour History
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 20.
H4TU-C HDSL (Loop 1/Loop 2) 25-Hour Performance History
Figure 21 shows statistics for the HDSL4 interface at the H4TU-C. This screen reports 1-day, 1-hour, and
15-minute statistics. Refer to Table 10 on page 34 for descriptions of the kinds of errors reported on this screen.
Monitor
Performance
Event Log
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Inventory
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H4TU-C HDSL
Current Statistics
LP1/LP2
----------------------------------------------------------------------------1 Day
1 Hour
15 Min
Start
05:57
07:00
07:30
CV
ES
SES
UAS
LOSWS
Hi
Cur
Low
0/0
0/0
0/0
0/0
0/0
Margin(dB)
16/17
14/16
13/13
0/0
0/0
0/0
0/0
0/0
LA(dB)
0/0
0/0
0/0
0/0
0/0
0/0
INSL(dB)
0/0
Press: C(l)ear Current Statistics
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C HDSL
choices and <Enter> to view
Statistics : Current
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 21.
H4TU-C-319 List 1
H4TU-C HDSL (Loop 1/Loop 2) Current Statistics
September 12, 2003
33
Monitoring System Activity and Performance
Table 10.
Acronyms Used on the HDSL4 Performance History Screens
Acronym
Description
CV
Code Violation
Total count of HDSL4 CRC errors
Errored Seconds
Seconds with HDSL4 CRC ≥1 or LOSW ≥1
Severely Errored Seconds
Seconds with HDSL4 CRC ≥50 or LOSW ≥1
Unavailable Seconds
Based on 10 contiguous SES occurrences
Loss of Sync Word Second
Seconds with LOSW ≥1
ES
SES
UAS
LOSWS
34
LTPH-UM-1031-03, Issue 3
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA
To access the alarm history screens:
P
1
Press
to select the Performance screen.
2
Press the SPACEBAR to select an interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1 NET
HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL), then press
ENTER .
3
Press the SPACEBAR until Alarm History is selected, then press
screen, press L .)
ENTER . (To clear the selected alarm history
Alarm History at the DS1 Interface
The Alarm History screen reports DS1 statistics for the H4TU-C (Figure 22) and the H4TU-R (Figure 23 on
page 36) on a continuous basis. The types of alarms reported are described in Table 11 on page 36. Current alarms
are shown in reverse video.
Monitor
Performance
Event Log
Config
Inventory
Report
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Help
H4TU-C DS1 Alarm History
----------------------------------------------------------------------------Alarm
First
Last
Status
Count
LLOS
LAIS
DBER
LOF
01/30/02
ALARM
OK
OK
OK
01/30/02
12
0
7
0
Press: C(l)ear Alarm History
----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C DS1
choices and <Enter> to view
Statistics : Alarm History
ID: xxxx--xxxx--xxxx—-xxxx
02/01/2002 12:30:01
H4TU-C
System: Alarm
Figure 22.
H4TU-C-319 List 1
H4TU-C DS1 Alarm History Screen
September 12, 2003
35
Monitoring System Activity and Performance
Monitor
Performance
LTPH-UM-1031-03, Issue 3
Event Log
Config
Inventory
Report
Rlogon
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H4TU-R DS1 Alarm History
----------------------------------------------------------------------------Alarm
First
Last
Status
Count
RLOS
RAIS
RAI
LRAI
PRM-NE
PRM-FE
DBER
LOF
01/30/02 00:37
01/30/02
00:45
OK
OK
OK
OK
OK
OK
OK
OK
0
0
0
0
0
0
7
0
Press: C(l)ear Alarm History
-----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-R DS1
choices and <Enter> to view
Statistics : Alarm History
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: Alarm
Figure 23.
H4TU-R DS1 Alarm History Screen
Table 11.
Screen Alarm
DS1 Alarm Descriptions
Front-Panel
Description
Alarm
H4TU-C DS1 Alarms (Figure 22 on page 35)
LLOS (a)
LAIS (a)
LLOS
LAIS
DBER
xxx-DBER
LOF
xxx-LOF
Line (Unit) Loss of Signal—Loss of the H4TU-C DSX-1 input signal.
Line Alarm Indication Signal—Indicates an AIS (unframed all ones) pattern is being received at the
H4TU-C DS1 input port.
Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of approximately
10-6. (xxx denotes either TUC or TUR.)
Loss of Frame—Indicates the incoming DS1 frame pattern is other than the one selected, ESF or SF,
by the FRMG option. Only occurs if the FRMG option is set to SF or ESF. (xxx denotes either TUC or
TUR.)
H4TU-R DS1 Alarms (Figure 23 on this page)
RLOS (b)
RAIS
RLOS
RAIS
RAI
RRAI
LRAI
LRAI
PRM-NE
PRMN
PRM-FE
PRMF
DBER
xxx-DBER
LOF
xxx-LOF
Remote (Unit) Loss of Signal—Loss of the H4TU-R DS1 input signal.
Remote Alarm Indication Signal—Indicates an AIS (unframed all ones) pattern is being received at the
H4TU-R DS1 input port. By default AIS-CI (b)is sent towards the network (see Figure 27 on page 45)
Remote RAI - Remote Alarm Indication at the H4TU-R—Indicates an RAI alarm (yellow) from the CPE
with errors from the line unit or network.
Line (Clear) Remote Alarm Indication—An RAI condition is detected at the remote and the signal from
the line unit is error-free. RAI signal is transmitted towards the network.
Performance Report Messaging - Near End—The count of the PRM-NE register at the H4TU-R
exceeds the 10-6 BER threshold at 648 events since 12:00:00 AM.
Performance Report Messaging - Far End—The count of the PRM-FE register at the H4TU-R exceeds
the 10-6 BER threshold at 648 events since 12:00:00 AM.
Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of approximately
10-6. (xxx denotes either TUC or TUR.)
Loss of Frame—Indicates the incoming DS1 payload does not contain the specific frame pattern, ESF
or SF, selected by the FRMG option. Only occurs if the FRMG option is set to SF or ESF. (xxx denotes
either TUC or TUR.)
(a) This is a DS1-specific alarm that also issues a minor alarm (sent to the management unit or the backplane), if enabled.
(b) AIS-CI is a modified AIS alarm pattern. Equipment not suited to detect AIS-CI still detects this signal as an AIS. AIS-CI is sent
toward the network indicating that an LOS (RLOS) or AIS (RAIS) has been received from the CPE.
36
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
Alarm History at the HDSL4 Interface
The HDSL4 Alarm History screens report alarms for the HDSL4 interface at the H4TU-C and H4TU-R. Figure 24
shows the H4TU-C HDSL4 alarm history. Table 12 describes the alarms that are reported at the H4TU-C or
H4TU-R.
Monitor
Performance
Event Log
Config
Inventory
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H4TU-C HDSL
Alarm History
----------------------------------------------------------------------------Alarm
First
Last
Status
Count
LOSW-LP1
MAL -LP1
LA -LP1
HBER-LP1
LOSW-LP2
MAL -LP2
LA -LP2
HBER-LP2
SHORT
GND
OPEN
01/15/02 16:45
01/15/02 16:44
01/15/02 16:45
01/15/02 16:44
01/15/02 16:45
01/15/02 16:45
OK
OK
OK
DISABLED
OK
OK
OK
DISABLED
OK
OK
OK
1
1
0
0
1
0
0
0
0
0
0
Press: C(l)ear Alarm History
----------------------------------------------------------------------------Use <Space> to cycle through
Interface : H4TU-C HDSL
choices and <Enter> to view
Statistics : Alarm History
ID: xxxx--xxxx--xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: Alarm
Figure 24.
H4TU-C HDSL Alarm History Screen
Table 12.
Screen Alarm
Front-Panel Alarm
HDSL4 Alarm Descriptions
Description
HDSL4 Alarms at the H4TU-C and H4TU-R
LOSW
SPNn-LOSW
Loss of Sync Word—The HDSL4 loop has lost synchronization.
MAL
xxxx-MALx
Margin—The margin on the HDSL4 loop has dropped below the minimum threshold
value set for the system.
xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4
upstream or downstream interface. If TUC and TUR occur at the same time, then TUC
displays. The single x indicates Loop 1 or Loop 2.
LA
xxxx-LAx
Loop Attenuation—The attenuation on the HDSL4 loop has exceeded the maximum value
set for the HDSL4 loop attenuation threshold.
xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4
upstream or downstream interface. If TUC and TUR occur at the same time, then TUC
displays. The single x indicates Loop 1 or Loop 2.
HBER
xxxx-HBRx
Block Error Rate—The HDSL4 BER has exceeded the set threshold limits of 10-6 or 10- 7.
xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4
upstream or downstream interface. If TUC and TUR occur at the same time, then TUC
displays. The single x indicates Loop 1 or Loop 2.
HDSL4 Alarms at the H4TU-C only
SHORT (a)
GND
(a)
OPEN (a)
PWR FEED SHRT
Indicates a short between Loop 1 and Loop 2 of the HDSL4 pair.
PWR FEED GND
One of the HDSL4 loops is grounded.
PWR FEED OPEN
Indicates a line power open condition.
(a) Displays only at the H4TU-C HDSL interface.
H4TU-C-319 List 1
September 12, 2003
37
Monitoring System Activity and Performance
LTPH-UM-1031-03, Issue 3
USING THE EVENT LOG TO TRACK SYSTEM EVENTS
To view a running log of system events, press E to select the Event Log. The Event Log displays the date and
time of the 100 most recent events (the most recent displayed first) and provides a description of each event. See
Table 13 on page 39 for an alphabetical listing of all possible event log messages.
•
Press
N
or
•
Press
T
to return to the top of the log.
•
Press
L
to clear the event log.
Monitor
P
to page through the event log.
Performance
Event Log
Config
Inventory
Report
Rlogon
Help
System Event Log (Page 1 of 7)
----------------------------------------------------------------------------#
Origin
Date and Time
Entry
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Line Unit
Line Unit
Line Unit
Managment Host
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
Line Unit
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
01/15/02
16:44:41
16:44:41
16:44:39
16:45:10
16:45:03
16:45:03
00:00:00
16:15:33
16:15:33
16:15:31
16:15:03
16:15:03
00:00:00
14:53:17
14:53:16
MAL Alarm TUC Lp 1: End
LOSW Alarm span 1: End
MAL Alarm TUC Lp 1: Begin
Time set to 16:44:18
DS1 AIS Alarm: Begin
LOSW Alarm span 1: Begin
Time set to 16:45:00
MAL Alarm TUC Lp 1: End
LOSW Alarm span 1: End
MAL Alarm TUC Lp 1: Begin
DS1 AIS Alarm: Begin
LOSW Alarm span 1: Begin
Time set to 16:15:00
MAL Alarm TUC Lp 2: End
LOSW Alarm span 1: End
Press: (N)ext Page, (P)revious Page, (T)op of Log, C(l)ear Log
ID: xxxx--xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 25.
38
System Event Log
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
Table 13.
Event Log Entry Messages List
Event Log Messages
HDSL4 DC pair open begins/ends on any segment
HDSL4 Ground fault begins/ends on any segment
H4TU-C Power up/down
H4TU-R Power up/down
HDSL4 margin alarm (threshold crossed) on any HDSL4 Interface (I/F)
HDSL4 loop attenuation (threshold crossed) on any HDSL4 I/F
HDSL4 HBER alarm (threshold crossed) on any HDSL4 I/F
HDSL4 LOSW begins/ends on any segment
CPE DBER alarm (1-day threshold of any PM data crossed—except PRM-NE or
PRM-FE)
CPE PRM-NE BER alarm (at the remote only: 1-day PRM-NE threshold crossed:
trouble on CPE receive)
NTWK PRM-FE BER alarm (at the remote only: 1-day PRM-FE threshold
crossed: trouble on NTWK far end)
NTWK DBER alarm (1-day threshold of any PM data crossed)
CPE DS1 LOS begins/ends
CPE DS1 AIS begins/ends
NTWK DS1 LOS begins/ends
NTWK DS1 AIS begins/ends
TX RAI-CI begins/ends (RAI-CI sent from the remote towards the network)
RAI begins/ends
Any HDSL4 PM register reset
Any DS1 PM register reset
Any DS1 Alarm History reset
Any HDSL4 Alarm History reset
Event Log reset
Current statistics reset
Master zero reset
Any provisioning option change: <provisioning mnemonic>: changed from
<old> to <new>
Any Loop Up (any segment)
Any Loop Down (any segment)
Power Feed Short begins / ends
H4TU-C-319 List 1
September 12, 2003
39
Monitoring System Activity and Performance
LTPH-UM-1031-03, Issue 3
USING THE REPORT MENU
The Report menu (Figure 26) provides screens containing status and performance monitoring data for line and
remote units which can be downloaded to a file for analysis or future reference. Table 14 on page 41 describes the
four types of reports provided by the Report menu.
To select each individual report, do the following:
O
1
Press
to select Report menu.
2
Press the
SPACEBAR
to select a report type and print mode.
—
Continuous Print Mode generates a non-stop version of the report.
—
Page Mode generates a page-by-page version of the report for easy viewing on the screen.
3
Use your terminal emulation software (HyperTerminal or Procomm) to capture the selected report to your
printer. Press ENTER to generate. (If Page Mode is selected, press the SPACEBAR to continue or ESC to quit.)
4
End the captured report.
5
Press
CTRL
Monitor
+
R
to refresh the Report menu screen.
Performance
Report Type
Print Mode
Please select report
terminal logging and
Event Log
Inventory
Report
Rlogon
: Full Report
: Continuous
type and print mode by pressing <Space>,
press <Enter> to generate the report.
ID: xxxx—-xxxx—-xxxx--xxxx
02/01/2002 12:30:01
Figure 26.
40
Config
H4TU-C
Help
then start
System: OK_
Report Menu - Full Report
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Monitoring System Activity and Performance
Table 14.
Report Types
Type
Contains the following information:
Full Report
• Circuit and unit identifications
• Product information
• System configuration
• Current performance statistics
• Alarm history
• Performance history
• System event log
• Circuit and unit identifications
Short Report
• Product information
• System configuration
System Information Report
• Current performance statistics
• Circuit and unit identifications
• Product information
Event Report
• System configuration
• Circuit and unit identifications
• Product information
• System event log
H4TU-C-319 List 1
September 12, 2003
41
Testing
LTPH-UM-1031-03, Issue 3
TESTING
This section provides information about front-panel system alarms, LOS and AIS response, the OCT55 test
procedure, and loopback testing.
SYSTEM ALARMS
Table 15 summarizes all possible system alarms in order of priority as they appear on the front panel. When
multiple alarms occur, the front-panel display only reports the highest priority alarm. The alarm history screens
display alarms also, but provide greater detail (see “Using the Performance Screens to View Performance Data”
on page 28). Alarms that are not inhibited will drive the front-panel Status LED to a flashing red alarm state.
Table 15.
Front-Panel
Message (a)
Front-Panel System Alarms
Alarm
Description
To Inhibit:
PWR FEED
SHRT (b)
Power Feed Short
A short exists between Loop 1 and Loop 2 of
the HDSL4 pair.
Cannot be inhibited.
PWR FEED
GND (b)
Power Feed Ground
One of the HDSL4 loops is grounded.
Cannot be inhibited.
PWR FEED
OPEN (b)
Power Feed Open
A line power open condition exists.
Cannot be inhibited.
SPNn-LOSW
Span(n)-Loss of Sync
Word (c)
The HDSL4 loop has lost synchronization.
The span closest to the network has highest
priority.
Cannot be inhibited.
LLOS
Line (Unit) Loss of
Signal
Loss of the DSX-1 input signal.
Cannot be inhibited.
RLOS
Remote (Unit) Loss of
Signal
Loss of the H4TU-R DS1 input signal.
Disable the RDA (Remote Disconnect
Alarm) option. This prevents an LOS
condition at the DS1 input to a H4TU-R
from activating pin H. The front-panel
Status LED still flashes red and the ALRM
RLOS message displays to alert you of the
LOS state. LOS is sent towards the
network from the H4TU-C. This option
prevents the common occurrences of a
CPE LOS condition from generating
recurring alarms and AIS payloads.
LAIS
Line Alarm Indication
Signal
Indicates an AIS (unframed all ones) pattern
is being received at the H4TU-C DS1 input
port.
Cannot be inhibited.
RAIS
Remote Alarm
Indication Signal
Indicates an AIS (unframed all ones) pattern
is being received at the H4TU-R DS1 input
port.
Cannot be inhibited.
LRAI
Line RAI—Remote
Alarm Indication at the
H4TU-R (Net signal
does not have errors.)
Indicates an RAI alarm (yellow) from the CPE
with an error-free signal from the line unit or
network. RAI signal is transmitted towards
the network.
Cannot be inhibited.
Continued
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Testing
Table 15.
Front-Panel
Message (a)
Front-Panel System Alarms (Continued)
Alarm
Description
To Inhibit:
RRAI
Remote RAI—Remote
Alarm Indication at the
H4TU-R (Net signal
has errors.)
Indicates an RAI alarm (yellow) from the CPE
with errors from the line unit or network.
Cannot be inhibited.
xxx-DBER
DS1 Bit Error Rate
The DS1 BER has exceeded the set 24-hour
threshold limit of approximately 10-6. (xxx
denotes either TUC or TUR. If TUC and TUR
occur at the same time, then TUC displays.)
Select DIS for the DBER system option.
xxx-LOF
Loss of Frame
The DS1 input does not contain the ESF or SF
frame pattern setting of the FRMG option.
(xxx denotes either TUC or TUR. If TUC and
TUR occur at the same time, then TUC
displays.)
Change FRMG option to AUTO or UNFR.
PRMN
Performance Report
Messaging - Near End
H4TU-R PRM-NE BER threshold has been
exceeded.
Set DBER threshold to DIS.
PRMF
Performance Report
Messaging - Far End
H4TU-R PRM-FE BER threshold has been
exceeded.
Set DBER threshold to DIS.
xxxx-HBRx (d) HDSL4 Block Error
Rate
The HDSL4 BER has exceeded the set
threshold limits of 10-6 or 10- 7.
xxxx denotes TUC, TUR, or first
(DU1U/DU1D) or second (DU2U/DU2D)
doubler HDSL4 upstream or downstream
interface. If TUC and TUR occur at the same
time, then TUC displays. The single x
indicates Loop 1 or Loop 2.
Select NONE for the HBER system option.
xxxx-MALx (d) Margin Alarm
The margin on the HDSL4 loop has dropped
below the minimum threshold value set for the
system.
xxxx denotes TUC, TUR, or first
(DU1U/DU1D) or second (DU2U/DU2D)
doubler HDSL4 upstream or downstream
interface. If TUC and TUR occur at the same
time, then TUC displays. The single x
indicates Loop 1 or Loop 2.
Set the Margin Alarm Threshold option to
zero.
xxxx-LAx (d)
The attenuation on the HDSL4 loop has
exceeded the maximum value set for the
HDSL4 loop attenuation threshold.
xxxx denotes TUC, TUR, or first
(DU1U/DU1D) or second (DU2U/DU2D)
doubler HDSL4 upstream or downstream
interface. If TUC and TUR occur at the same
time, then TUC displays. The single x
indicates Loop 1 or Loop 2.
Set the HDSL4 Loop Attenuation
Threshold option to zero.
Loop Attenuation
(a) The message, ALRM, displays prior to any alarm message.
(b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.
(c) When the HDSL4 loop loses sync word (LOSW), a system alarm condition exists. However, since the H4TU-C-319 enters the
acquiring mode, the front-panel status LED flashes red, and the ACQ or SIG message displays instead of the ALRM message.
(d) Only these alarms assert the System Alarm bus on pin H of the card-edge connector, if the ALM option is set to enabled.
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Testing
LTPH-UM-1031-03, Issue 3
Alarm Option for DLC Feed
To improve HDSL4 compatibility with the switch-to-protect features used in DLC feeder applications, the
H4TU-C-319 has an Alarm Pattern (ALMP) option that allows you to select either an AIS or LOS DS1 output
payload for the following alarms:
•
LOSW on any loop
•
LOS DS1
Retiring System Alarms
To retire a system alarm, press the SEL pushbutton to execute an Alarm Cutoff (ACO). An ACO turns the alarm
off and replaces the ALRM message with an ACO message. The second part of the ALRM message, which defines
the cause of the alarm, remains. Both parts of the message remain until the alarm condition clears or another higher
priority alarm occurs.
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Testing
Remote LOS and AIS Response
Figure 27 shows the different ways the H4TU-R can respond to the network, depending on the configuration of
the NLBP, TLOS, RDA, and ALMP configuration options described in Table 5 on page 19 and Table 6 on
page 20.
H4TU-R, DS1 Input
AIS to CPE
AIS
LOS event?
YES
NLBP
NO
TLOS
LOS to CPE
LOS
ENA
Loopback to Network
DIS
RDA
DIS
Pass on LOS to
Network, no alarm
report
LOS
Pass on LOS to
Network
ENA
Remove alarm
pattern
NO
AIS event?
YES
ALMP
Standard Option
AIS
ADC Option
Default configurations are in bold.
AIS to Network
Figure 27.
H4TU-R LOS and AIS Response Priorities
OCT55 TEST PATTERN WITH AMI LINE CODE
The OCT 55 test pattern can be used in unframed mode to stress the system and verify data integrity. In an SF or
ESF framing mode, excessive zero anomalies may occur, which causes the H4TU-C to report ES, SES, and UAS
errors according to ANSI T1.231-1997.
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Testing
LTPH-UM-1031-03, Issue 3
LOOPBACK OPERATION
HDSL4 has a family of loopback options for analyzing circuit functionality. The loopback signal is transmitted
and returned to the sending device for comparison. This allows you to verify the integrity of the HDSL4 channels
to the H4TU-C, the H4TU-C DSX-1 interface, and the DS1 channels to the customer.
Loopback options include:
•
Generic Loopback (GNLB) options, including the SmartJack (SMJK) option (see Table 16 on page 51)
•
A3LB Addressable Repeater Loopback command (see Table 17 on page 52)
•
A5LB Addressable Repeater Loopback command (see Table 18 on page 53)
Loopback commands can be initiated by:
•
Selecting the loopback type using the MODE and SEL pushbuttons on the H4TU-C front panel or the manual
loopback (LBK) pushbutton on the H4TU-R front panel
•
Selecting the loopback type from the Monitor menu when connected to the craft port of the H4TU-C or
H4TU-R
•
Entering the loopback code (exceptions are COLB and RULB) into the test equipment connected to the
H4TU-C or H4TU-R
Span 1
Activate loopback using
one of the following:
• MODE/SEL pushbuttons
• Maintenance Terminal
• Test Set
Span 3
Span 2
DSX-1
NLOC
CREM
H4TU-C
NDU1
CDU1
H4D1
NREM
CDU2 SMJK
TLOS*
NDU2
H4D2
CLOC
Activate loopback using
one of the following:
• LBK pushbutton
• Maintenance Terminal
• Test Set
H4TU-R
* When enabled, TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
Network
Figure 28.
Customer
Premises
Loopback Summary
ADC HDSL4 supports multiple loopbacks, but a single loopback is the preferred method. HDSL4
automatically rejects activation of closed loop looopbacks. For example, an NREM and CREM
cannot be activated at the same time.
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Testing
Generic Loopback Commands
The HDSL4 Generic Loopback (GNLB) commands allow you to use inband codes to loop up either
NLOC (4-in-7) or NREM (3-in-7) towards the network. In addition, these inband codes loop up CREM (6-in-7)
or CLOC (5-in-7) towards the customer. Either loopup condition can be terminated (looped down) with the 3-in-5,
SMJK loopdown code. All inband codes must be present for at least 5 seconds before the HDSL4 system responds.
TLOS is a logic loopback caused by loss of the DS1 input from the CI.
Figure 29 on page 50 summarizes the available loopbacks in the system, and Table 16 summarizes the HDSL4
generic loopback commands. See “GNLB Test Procedures” on page 51 for the test procedures that apply
HDSL4 systems feature the SmartJack option, which can emulate a Network Interface Device
(NID) for the purpose of loopback testing of the HDSL4 circuit. SMJK and NREM loopbacks
perform the same functions but their initiation differs. SMJK indicates that the loopback was
initiated by the 2-in-5 inband command. NREM, on the other hand, is initiated by the 3-in-7
inband command or by a command issued from the maintenance terminal or the MODE and SEL
pushbuttons.
Use the inband commands to enable or disable the SMJK loopback options. The H4TU-C-319
system setting is normally enabled to recognize all inband SmartJack loopback commands.
Special Loopback Commands
A3LB and A5LB loopback commands can be sent by a test set connected to the H4TU-C or H4TU-R. See
Table 17 on page 52 and Table 18 on page 53 for a list of the commands.
A3LB and A5LB are special, addressable, repeater loopback modes which are supported by the H4TU-C. These
loopback modes provide the HDSL4 system with sophisticated maintenance and troubleshooting tools. A3LB and
A5LB are patterned after the Westell addressable T1 repeater loopbacks.
The A5LB loopback selection complies with that proposed for HDSL4 systems in the T1E1.4/92 looopback
recommendation with the following additions:
•
Query loopback
•
IOR (Intelligent Office Repeater) power-down
•
Four loopback time-out choices
•
Initiation from either end
•
Repeating bit error signatures
•
Alternate query loopback
A5LB does not block the arming code from exiting the H4TU-C-319 into the network. Since A5LB never blocks
the arming code from exiting the H4TU-C, the Far-End Activate code is not available in A5LB. A3LB supports
the additional (1-in-6) SMJK loopback command.
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Testing
LTPH-UM-1031-03, Issue 3
Manual Loopback Session
A manual loopback session allows you to select any one of the HDSL4 loopbacks listed in Table 16 on page 51
with the exception of SmartJack loopbacks, which can only be issued by inband commands.
Setting the Loopback Time-Out Option (LBTO)
Before initiating a loopback session, verify that the Loopback Time-Out parameter is set to the desired setting.
1
Use the MODE and SEL pushbuttons as described in “Setting Options through MODE and SEL” on page 10.
(The loopback time-out parameter is also user-selectable from the Config Menu, Standard Options screen
when using a maintenance terminal.)
2
Select the desired setting:
•
NONE (time-out disabled)
•
20 minutes
•
60 minutes
•
120 minutes
•
8 hr
•
24 hr
Activating Manual Loopback Mode
With the exception of SmartJack, any of the HDSL4 loopbacks can be executed using the MODE
and SEL pushbuttons.
When executing a manual loopback session using the MODE and SEL pushbuttons:
•
The next loopback option can be displayed by pressing the MODE pushbutton, however, the
previously activated loopback remains active until the SEL pushbutton is pressed, which
activates the new loopback.
•
If neither pushbutton is pressed for a period of 30 seconds and no loopback is in effect, the
manual loopback session terminates, and the display returns to normal mode.
•
If any loopback is in effect, the 30-second time-out is inhibited. The active loopback and the
manual loopback sessions continue until the loopback times out in accordance with the
LBTO setting.
•
If there is an active loopback, pressing the MODE and SEL pushbuttons for 3 or more
seconds terminates any active loopback, ends the manual loopback session, and returns the
display to normal mode.
To initiate a manual loopback session:
1
Press both the MODE and SEL pushbuttons on the front panel for at least 3 seconds. The following message
appears on the front-panel display:
MAN LPBK NLO? (XXXX indicates loopback choices)
48
2
Press SEL to activate NLOC. The display changes to MAN LPBK NLOC.
3
Press MODE to advance to the next available loopback:
•
NDx? = Doubler 1 or Doubler 2, if H4D is available
•
NRE? = NREM
•
CRE? = CREM
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Testing
•
CDx? = Doubler 1 or Doubler 2, if H4D is available
•
CLO? = CLOC
•
COL? = Dual loopback at H4TU-C
•
DxL? = Dual loopback at Doubler 1 or Doubler 2, if available
•
RUL? = Dual loopback at H4TU-R
Press SEL to activate the selected loopback. The previous loopback is terminated.
Once a loopback is selected and activated, the loopback stays active until it times out (based on the LBTO setting).
When a loopback times out, the display returns to the normal display mode.
You can terminate loopbacks manually and exit the MAN LPBK mode by simultaneously pressing the MODE and
SEL pushbuttons for 3 or more seconds. If no loopback is active, the MAN LPBK mode automatically terminates
after 30 seconds.
All loopbacks can be initiated by inband commands in the DS1 payload or by a command from the HDSL4 system
(front-panel pushbuttons or maintenance screen selections). Therefore, whenever a loopback is active, the method
by which it was activated is indicated in the loopback and status information (Monitor screen) by the annotation
HG or PL adjacent to the identified loopback. For example, NREM-HG indicates that the loopback was initiated
by the HDSL4 system.
SMJK loopback commands are only activated by inband commands.
LOOPBACK TEST PROCEDURES
The following sections provide step-by-step test procedures for verifying the integrity of the HDSL4 channels at
every module location as well as the DS1 channels to the customer and the local DSX-1 interface. Figure 29 on
page 50 summarizes the available loopbacks in the system.
General Troubleshooting Tips
If trouble is encountered on the DSX-1 interface of the H4TU-C, verify that the:
•
H4TU-C is making a positive connection with its shelf connector.
•
H4TU-C internal equalizer is set to the correct distance range per Table 5 on page 19. All equalizers should
be set to the distance from the DSX-1 to the shelf.
The transmit and receive DSX-1 ports have splitting access jacks and miniature, 210-series, bridging jacks as
shown in Figure 1 on page 3. Connecting one cable between the two (BRG) jacks and another between the two
LINE jacks splits the IN and OUT and creates metallic loopbacks towards both the DSX-1 and the H4TU-C-319.
If separate plugs are inserted into both LINE jacks with the other end disconnected, the BRG jacks can be used to
send and receive test patterns towards the DSX-1.
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Testing
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Loopbacks Toward Network
TLOS*
HRU-412
LOGIC
HRU-412
HDSL4 SPAN
HLU
H4TU-C
All ones
H4TU-R
SMJK*
HDSL4 SPAN
H4TU-C
HLU
11000
HRU-412
2-in-5
HRU-412
All ones
H4TU-R
FF02 =
C742 ‡
FF04 =
DSX-1
4-in-7
HLU
FF06 =
H4TU-R
FF1E =
1111000
3F1E =
D3D3 ‡
HLU
6-in-7
1111110
All ones
HRU-412
H4TU-R
5 IN 7 All ones
HDSL4 SPAN
HRU-412
CREM
All ones
CLOC
D3D3 ‡
H4TU-C
All ones
HRU-412
33-in-7
in 7
HRU-412
HRU-412
H4TU-R
C741 ‡
C754 ‡
1NDU1
UDC
1NDU2
UDC
2-in-6
3-in-6
6 ni 4
6 ni 4
SPAN 2
SPAN 3
SPAN 1
0110000
01111
0111000
01111
90H4D1
4-UDH
90H4D2
4-UDH
H4TU-C
SPAN
4
NLOC
1110000
HDSL4 SPAN
Loopbacks Toward Customer
HDSL4 SPAN
H4TU-R
CI-Customer Interface
H4TU-C
HLU
NREM*
NREM
H4TU-C
3F02 =
C742 ‡
HLU
All ones H4TU-C
3F04 =
HLU
All ones H4TU-C
1111100
HDSL4 SPAN
SPAN 1
3F06 =
C741 ‡
CDU1
C754 ‡
CDU2
4-in-6
SPAN 2
111100
5-in-6
SPAN 3
111110
H4D1
H4D2
CLOC
HRU-412
5 IN 7
5-in-7
H4TU-R
HRU-412
H4TU-R
Bidirectional (Dual) Loopbacks
H4TU-C
H4D1
H4D2
D1LB
D2LB
H4TU-R
HLU
COLB
RULB
* Set the NLBP option to AIS to send AIS (indicated by an all ones pattern) for any network loopback.
= A3LB loopback codes.
‡ A5LB loopback codes.
GNLB loopback codes.
Figure 29.
50
Loopback Modes
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Testing
GNLB Test Procedures
Figure 29 on page 50 is a graphical representation of the various loopback configurations with the associated
GNLB commands shown. Refer to Table 16 for a description of these commands.
Table 16.
Summary of HDSL4 Loopback and Activation Codes
Method of Activation
Loopback
Code
Description
Test Set
Craft Port
MODE/SEL
NLOC
1111000
4-in-7
DSX-1 signal is looped back to the network at
the H4TU-C.
X
X
X
NREM
1110000
3-in-7
DSX-1 signal is looped back to the network at
the H4TU-R.
X
X
X
NDU1
110000
2-in-6
Signal is looped back to the network at H4D1.
X
X
X
CDU1
111100
4-in-6
DS1 signal from customer is looped back to the
customer at H4D1.
X
X
X
NDU2
111000
3-in-6
Signal is looped back to the network at H4D2.
X
X
X
CDU2
111110
5-in-6
DS1 signal from customer is looped back tot he
customer at H4D2.
X
X
X
D1LB
Dual loopback at H4D1.
X
D2LB
Dual loopback at H4D2.
X
CLOC
1111100
5-in-7
DS1 signal from the customer is looped back to
the customer at the H4TU-R.
X
X
X
CREM
1111110
6-in-7
DS1 signal from the customer is looped back to
the customer at the H4TU-C.
X
X
X
COLB
RULB
Dual loopback at the H4TU-C. DSX-1 signal is
looped back to the network at the H4TU-C and
DS1 signal from the customer is looped back to
the customer at the H4TU-C.
X
Dual loopback at the H4TU-R. DSX-1 signal is
looped back to the network at the H4TU-R and
DS1 signal from the customer is looped back to
the customer at the H4TU-R.
X
SMJK LpUp
(PL)
11000
2-in-5
SmartJack Loopup or NID payload (PL) code.
Invokes H4TU-R loopback towards network.
X
SMJK LpUp
(ESF-DL)
1111-11110100-1000
SmartJack Loopup or NID (ESF-DL) code.
Invokes H4TU-R loopback towards network.
X
SMJK LpDn
(PL)
11100
3-in-5
SmartJack Loopdown or NID payload (PL) code.
Removes SMJK, NLOC, NREM, CLOC, and
CREM.
X
SMJK LpDn
(ESF-DL)
1111-11110010-0100
SmartJack Loopdown or NID (ESF-DL) code.
Removes SMJK, NLOC, NREM, CLOC, and
CREM.
X
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LTPH-UM-1031-03, Issue 3
To perform the GNLB loopback test procedure:
1
Have the CO tester send the NREM (3-in-7) inband loopup code for 5 seconds. You should observe the
NREM message on the front-panel display. (The Status LED on the front panel should be green, and the
loopback mode should also be identified on the Monitor screen.)
2
Have the CO tester transmit a DS1 test signal towards the H4TU-C and verify that the returned (looped) signal
to the test set is error-free.
3
If step 2 fails, have the CO tester transmit the (3-in-5) inband loopdown code.
4
Have the CO tester send the NLOC (4-in-7) inband loopup for 5 seconds. You should observe the NLOC
message on the front-panel display. (The Status LED on the front panel should be yellow, and the loopback
mode should also be identified on the Monitor screen.)
5
Repeat Step 2. If the test passes, the problem is in the downstream direction. If it fails, the problem is in the
upstream direction.
A3LB Test Procedure
The H4TU-C-319 can be looped back by sending the Addressable Office Repeater (AOR) LPBK activation code
1111-1111-0001-1110 (FF1E) for at least 5 seconds. This causes the H4TU-C to enter the NLOC state. The
Loopback Time-Out setting (see “Setting the Loopback Time-Out Option (LBTO)” on page 48) determines the
duration of this loopback unless it is overridden by the reception of a second identical 16-bit loopup command
before the timer expires. When this time-out override state exists, the only way to loop the H4TU-C down is to
issue one of the three loopdown commands listed in Table 17. The automatic time-out mode is restored during
subsequent loopback sessions.
Table 17 summarizes the codes required to execute an A3LB Addressable Repeater Loopback command. All code
sequences must be present for at least 5 seconds.
Table 17.
A3LB Addressable Repeater Loopback Commands
Name
Binary Code (a) (Hexadecimal Equivalent)
Description
NLOC
1111-1111-0001-1110 (FF1E)
H4TU-C loopup from NI.
CREM
0011-1111-0001-1110 (3F1E)
H4TU-C loopup from CI.
NREM
1111-1111-0000-0010 (FF02)
H4TU-R loopup from NI.
NDU1
1111-1111-0000-0100 (FF04)
Signal is looped back to the network at H4D1.
CDU1
0011-1111-0000-0100 (3F04)
DS1 signal from customer is looped back to the customer at H4D1.
NDU2
1111-1111-0000-0110 (FF06)
Signal is looped back to the network at H4D2.
CDU2
0011-1111-0000-0110 (3F06)
DS1 signal from customer is looped back tot he customer at H4D2.
D1LB
Dual loopback at H4D1.
D2LB
Dual loopback at H4D2.
CLOC
0011-1111-0000-0010 (3F02)
H4TU-R loopup from CI.
SMJK
11000-11000-11000 ...
H4TU-R loopup from NI.
SMJK
100000 100000 100000 ...
H4TU-R loopup from NI.
SMJK
1111-1111-0100-1000 (FF48)
H4TU-R loopup from NI (ESF-DL).
Loopdown
11100-11100-11100 ...
H4TU-C and H4TU-R loopdown from NI OR CI.
Loopdown
100-100-100 ...
H4TU-C and H4TU-R loopdown from NI OR CI.
Loopdown
1111-1111-0010-0100 (FF24)
H4TU-C and H4TU-R loopdown from NI OR CI (ESF-DL).
(a) The leftmost bit arrives first in all sequences. The detection algorithm functions reliably with a random 10-3 Bit Error Ratio
(BER) on the facility. The entire arming and loopback sequence can also be initiated at the remote H4TU-R location.
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Testing
A5LB Test Procedure
Using the codes listed in Table 18, a network tester can activate NLOC or NREM loopbacks (or SMJK, if
enabled). A tester at the customer premises can activate CLOC or CREM loopbacks.
Table 18.
A5LB Addressable Repeater Loopback Commands
Name
Binary Code (a) (Hexadecimal Equivalent) Description
ARMING or NI LPBK (inband)
11000-11000 ...
Arming code
ARMING or NI LPBK (ESF Data Link)
1111-1111-0100-1000 (FF48)
Arming code
IR LPDN or DISARM (inband)
11100-11100 ...
Disarming code
IR LPDN or DISARM (ESF Data Link)
1111-1111-0010-0100 (FF24)
Disarming code
IOR LPBK (NLOC or CREM)
230-232 bit errors
229-231 bit errors (b)
1101-0011-1101-0011 (D3D3)
H4TU-C loopup
ILR-1 LPBK
(NDU1 and CDU1 10 bit errors)
1100-0111-0100-0001 (C741)
Doubler-1 loopup
ILR-20 LPBK
(NDU2 and CDU2 200 bit errors)
1100-0111-0101-0100 (C754)
Doubler-2 loopup
ILR-2 LPBK
(NREM and CLOC 20 bit errors)
1100-0111-0100-0010 (C742)
H4TU-R loopup
ILR-2 LPBK (NREM or CLOC)
20 bit errors (c)
NREM—DSX-1 signal is looped back to
the network at the H4TU-R.
CLOC—DS1 signal from customer is
looped back to the customer at the
H4TU-R.
1100-0111-0100-0010 (C742)
IR LPDN
1001-0011-1001-0011 (9393)
Loopdown (H4TU-C or H4TU-R)
IR QUERY LPBK
1101-0101-1101-0101 (D5D5)
Query loopback
IR ALTERNATE QUERY LPBK
1101-0101-1110-1010 (D5EA)
Alternate query loopback
1101-0101-1101-0110 (D5D6)
Loopback time-out override
0110-0111-0110-0111 (6767)
Removes HDSL4 line power
TIME-OUT OVERRIDE
IOR POWER DOWN (H4TU-C)
(d)
(a) The leftmost bit arrives first in all sequences. The detection algorithm functions reliably with a random 10-3 BER on the facility.
The entire arming and loopback sequence can also be initiated at the remote H4TU-R location.
(b) The H4TU-R identifies CREM (and the H4TU-C identifies NLOC) with 231 bit errors, including the frame bits. When framed
data is being sent in the Auto framing mode, the number of the 231 bit errors detected by the test set varies from 229 to 231,
depending on whether or not the test set counts frame errors as bit errors, and on the number of frame bits contained in the
block of 231 error bits. The H4TU-R and H4TU-C generate this bit pattern in a series of discontinuous bursts containing 20-bit
errors each, including frame bits. Those test sets that do not count frame error bits as data bit errors will indicate fewer bits
than the H4TU-R and H4TU-C transmit for a CI and NI loopback.
(c) The H4TU-R is assigned the ILR-2 loopback code. It responds with 20 bit errors (excluding the frame bits).
(d) The IOR Power Down code must remain present for the duration of the power down mode. When this code is removed, the
system returns to its normal unlooped and unarmed state.
H4TU-C-319 List 1
September 12, 2003
53
Testing
LTPH-UM-1031-03, Issue 3
To perform the A5LB test procedures:
1
Send the inband Arming and NI LPBK code 11000 to the H4TU-C for at least 5 seconds.
2
Monitor the output of the H4TU-C for the return of the pattern. Return of the pattern indicates one of the
following:
3
•
The H4TU-R has looped up (if the SMJK Loopback option is enabled).
•
An external NID has looped up (if the SMJK Loopback option is disabled), and the H4TU-C and
H4TU-R have been armed.
Verify, if possible, that the H4TU-R Loopback LED is either flashing yellow at four times per second
(indicating that the system is armed), or is a steady yellow (indicating that it is both armed and in SMJK
loopback). The H4TU-C Status LED also flashes yellow when the system is armed.
If the Arming code is not returned after 5 seconds, the system may be armed, but there is no
active loopback.
4
Once armed, the H4TU-C can be looped back by sending Intelligent Office Repeater (IOR) LPBK activation
code 1101-0011-1101-0011 (D3D3) for at least 5 seconds. You should observe the following activation
response pattern in the order presented:
•
2 seconds of AIS (all ones pattern)
•
2 seconds of returning data pattern
•
231 logic errors (including the frame bit) occurring in the returned pattern comprising:
•
—
10 errors, if ILR-1 (Doubler 1) was sent
—
200 errors, if ILR-20 (Doubler 2) was sent
—
20 errors, if ILR-2 (H4TU-R) was sent
Normal looped data
This error pattern repeats every 20 seconds as long as the IOR loopback pattern is being sent. This also applies
to ILR, Time-Out Override, and Query commands.
Some Intelligent Repeater (IR) test sets do not count frame errors as bit errors when the test
pattern is framed and the H4TU-C-319 is set to the Auto framing mode. To improve compatibility
with those test sets, the H4TU-C generates 231 (NLOC and CREM) ID bit errors. As a result, the
H4TU-C may indicate one more or one less bit error, depending on the test set type and the
number of frame bits contained in the block of errored bits. To avoid this uncertainty, ADC
recommends sending unframed IR commands.
The H4TU-C is now in logic loopback if the IOR NLOC loopback command was sent. The Time-Out
Override command or a Loopdown command can override the selection made for the loopback time-out (see
“Setting the Loopback Time-Out Option (LBTO)” on page 48). If the Time-Out Override code
1101-0101-1101-0110 (D5D6) is received after activating a loopback, then the automatic timed expiration of
the loopback is inhibited. If this Time-Out Override is sent, then the only way to loop the H4TU-C down is
to do one of the following:
54
•
Issue the IR (Intelligent Repeater) LPDN (loopdown) code 1001-0011-1001-0011 (9393).
•
Issue the NI LPDN and Disarm inband code 11100 or the ESF-DL code (FF24).
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Testing
The Time-Out Override function is only valid for the current active loopback. The automatic
time-out timer is restored during subsequent loopback sessions.
5
Once the test is complete, do one of the following:
•
If the system is to loopdown but remain armed, send the IR (Intelligent Repeater) LPDN code (universal
loopdown).
•
If all the equipment is to be looped down, disarmed and returned to normal operation, send the disarm
inband code 11100 or the ESF-DL code (FF24).
The Armed mode has an automatic time-out of 120 minutes, but this timer is reset to 120 for any
of the following events:
•
Loopback terminates (manually or time-out)
•
Query
•
Alternate query
•
Far End activate
•
Another ARM command
This timer is inhibited while any of the valid command codes are being sent. Once the codes
are removed, the timer restarts at 120.
H4TU-C-319 List 1
September 12, 2003
55
Testing
LTPH-UM-1031-03, Issue 3
TESTING WITH H4TU-C BERT GENERATOR
The H4TU-C BERT Generator screen allows transmission of an unframed test signal from the H4TU-C toward
either the CI or the network.
It is not recommended using the Bit Error Rate Tester from the remote and line unit at the same
time.
C
1
Press
to select the Config menu (Figure 30).
2
Use the
3
Use the arrow keys to select an option and press the SPACEBAR to cycle through the settings. Refer to
Table 19 for a list of BERT generator option settings.
4
Press
5
To view BERT status, press
6
Press
↑
and
ENTER
arrow keys to select BERT Generator, then press
ENTER .
to activate your choice.
ENTER .
Monitor
↓
ESC
twice, then use the
←
arrow key to select the Monitor menu.
You can exit the status screen while signal generation is active.
Performance
Event Log
Config Inventory Report Rlogon
+----------------------+
| Standard Options -> |
| ADC Options
-> |
-> |
| BERT Generator
+--------------------------------------+
|
| BERT Signal Generator : ENA
| BERT Signal Pattern
: 1 in 8
|
| BERT Signal Linecode
: AMI
|
| BERT Signal Direction : NET only
|
| BERT Interval
: Continuous |
+--------------------------------------+
Help
Use <Spacebar> to cycle through option settings and <Enter> to activate
ID: xxxx—-xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-C
System: OK___
Figure 30.
Table 19.
56
H4TU-C BERT Generator Screen
BERT Signal Generator Option Settings
Option
Description
BERT Signal Generator
Enabled (ENA) or Disabled (DIS)
BERT Signal Pattern
1-in-8 pattern, 2-in-8 pattern, 3-in-24 pattern, 223-1 pseudo random,
220-1 pseudo random, 215-1 pseudo random
BERT Signal Linecode
AMI or B8ZS
BERT Signal Direction
Toward CPE or toward NET
BERT Interval
5 minutes, 60 minutes, Continuous (default)
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Testing
TESTING WITH H4TU-R BERT GENERATOR
The H4TU-R BERT Generator screen allows transmission of an unframed test signal from the H4TU-R towards
either the network (NET) or customer (CPE). Bit error rates are calculated and display on the Monitor screen.
R
to logon remotely, then press
C
1
Press
2
Use the
3
Use the arrow keys to select an option, then press the SPACEBAR to cycle through the settings. Refer to
Table 19 on page 56 for a list of BERT Generator option settings.
4
Press
5
To view BERT status, press
ENTER .
6
Press
↑
and
ENTER
R
Monitor
↓
to select the Config menu (Figure 31).
arrow keys to select BERT Generator, then press
ENTER .
to activate your choice.
ESC
twice, then, using the
←
arrow key to select the Monitor menu, press
to return to the H4TU-C logon screen. You can exit the status screen while signal generation is active.
Performance
Event Log
Config Inventory Report Rlogon
+----------------------+
| Standard Options -> |
| ADC Options
-> |
-> |
| BERT Generator
+--------------------------------------+
|
| BERT Signal Generator : ENA
| BERT Signal Pattern
: 1 in 8
|
| BERT Signal Linecode
: AMI
|
| BERT Signal Direction : NET only
|
| BERT Interval
: Continuous |
+--------------------------------------+
Help
Use <Spacebar> to cycle through option settings and <Enter> to activate
ID: xxxx—-xxxx—-xxxx--xxxx
02/01/2002 12:30:01
H4TU-R
System: OK___
Figure 31.
H4TU-R BERT Generator Screen
The test pattern is sent out either from the line unit towards the network (toward NET) or from
the remote unit towards the customer (toward CPE). Both test payloads must be looped back so
they can be returned to the unit for BER detection. BER detection is performed in the line unit
for both switch settings.
Tests done towards the NET must be looped at some point external to the higher circuit. Tests
done towards the CPE can either be looped back at some external point beyond the remote unit,
or they can be looped back internally by a higher loopback, such as NREM. The test payload,
for the CPE direction, also passes back and forth over the HDSL4 link to the H4TU-C before it is
analyzed for errors.
H4TU-C-319 List 1
September 12, 2003
57
Appendix A - Specifications
LTPH-UM-1031-03, Issue 3
APPENDIX A - SPECIFICATIONS
Power
Line Voltage
0, -185 Vdc, ±123 Vdc (Voltage is applied across Loop 1 and Loop 2.)
CO Supply
-48 Vdc nominal (-42.5 Vdc to -56.5 Vdc)
See “Power Consumption” and “Maximum Power Dissipation” and “Maximum
Current Drain” on page 61.
Electrical Protection
Secondary surge and power cross-protection on HDSL4 ports. Requires external
primary protection.
Fusing
Internal; connected to fuse alarm output on pin 10
Environmental
Operating Temperature
-40°F to +149°F (-40°C to +65°C)
Operating Humidity
5% to 95% (non-condensing)
Physical
Height
4.750 in. (12.10 cm)
Width
0.625 in. (1.59 cm)
Depth
10 in. (25.4 cm)
Weight
0.5 lb. (0.23 kg)
Mounting
3192 high-density mechanics shelf
HDSL4
Line Code
784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission per pair per
HDSL4 standard in ANSI T1.418 Issue 2
Transmission
Full duplex
CSA Reach
34 kft. maximum using 26 AWG wire: 12kft. (span 1), 11 kft. (span 2), 11 kft. (span 3)
Media
One non-loaded, copper, four-wire cable pair
Output
+14.1 dBm ±0.5 dBm at 135Ω
Line Impedance
135Ω
Maximum Insertion Loss
Span 1 = 47 dB at 196 kHz
Span 2 and Span 3 = 43 dB at 196 kHz
Maximum Loop Attenuation
Span 1 = 31 dB
Span 2 and Span 3 = 29 dB
Start-Up Time
30 sec. (typical), 1 min. (maximum)
DSX-1
58
Line Impedance
100Ω
Line Rate
1.544 Mbps ±200 bps
Line Format
Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)
Frame Format
Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)
Pulse Output
6 Vpk-pk pre-equalized for 0 to 655 feet of ABAM cable
Input Level
+1.5 to -7.5 dB DSX
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Appendix A - Specifications
System
One-way DS1 Delay
<700 µs
Wander (Looped)
Meets MTIE T1.101 requirements
Wideband Jitter (Looped)
0.2 UI maximum
Narrowband Jitter (Looped)
0.1 UI maximum
H4TU-C-319 List 1
September 12, 2003
59
Appendix A - Specifications
LTPH-UM-1031-03, Issue 3
POWER CONSUMPTION
The three most important power parameters of an H4TU-C are its maximum power consumption, maximum
power dissipation, and maximum current drain.
Table 20 describes line-powered and locally powered (remote) circuits on the maximum reach condition (34 kft.)
using 26 AWG wire.
Table 20.
H4TU-C Power Parameters
-48 Vdc Power Consumption
(Watts)
Heat Dissipation (Watts)
-42.5 Vdc Current (mA)
Number of
Doublers
Remote Power
Source
Typical
Maximum
Typical
Maximum
Typical
Maximum
None
Locally powered
7.6
8.4
5.9
6.4
179
197
None
Line-powered
11.0
12.1
6.2
6.8
259
285
1
Locally powered
14.6
16.1
6.6
7.2
344
378
1
Line-powered
20.0
22.0
7.1
7.8
471
518
2
Locally powered
26.7
29.4
8.4
9.2
628
691
2
Line-powered
32.9
36.2
9.3
10.3
774
852
MAXIMUM POWER DISSIPATION
The maximum power dissipation measures the power converted into heat which builds up within the unit. It
contributes to the total heat generated in the space around the unit. It is used to determine the maximum number
of fully loaded shelves per bay that does not exceed the maximum allowable power dissipation density in
watts per square foot to comply with GR-63.
In COs, the maximum power dissipation for open-faced, natural convection-cooled mountings is limited to
134.7 watts per square foot per GR-63-CORE. Use this limit and the parameters in Table 21 on page 61 to
determine the maximum number of H4TU-C circuits that can occupy one CO bay.
This is a worst case situation since it assumes the entire CO is subjected to the maximum power
density. More favorable conditions would permit increasing the number of shelves per bay
without jeopardizing the CO thermal integrity.
The thermal loading limitations imposed when using the H4TU-C in a Controlled Environmental Vault (CEV) or
other enclosures are determined by applying its power parameters to the manufacturer's requirements for each
specific housing.
The -48 Vdc power consumption is the maximum total power that the H4TU-C consumes or draws from the shelf
power source. This parameter is needed when the H4TU-C is in a location remote to the CO it is serving. It
determines the battery capacity required to maintain an 8-hour, standby battery reserve for emergency situations.
Battery capacity, therefore, limits the maximum number of line units which can be installed in a remote enclosure.
Use the data in Table 21 to perform this analysis.
60
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Appendix A - Specifications
MAXIMUM CURRENT DRAIN
The maximum current drain is the maximum current drawn from the shelf power supply when it is at its minimum
voltage (-42.5 Vdc). This determines the shelf fusing requirements. Use the -42.5 Vdc current data in Table 21 to
determine the shelf fusing requirements for your particular H4TU-C applications.
LOOP ATTENUATION, INSERTION LOSS, AND REACH
For Span 1, each loop has no more than 47 dB of insertion loss at 196 kHz, with driving and terminating
impedances of 135Ω, as shown in Table 21 below. This is equivalent to no more than 34 dB loop attenuation.
For Span 2 and Span 3, each loop has no more than 43 dB of insertion loss at 196 kHz, with driving and
terminating impedances of 135Ω. This is equivalent to no more than 31 dB loop attenuation.
Table 21.
HDSL4 Reach Chart
Cable Gauge
Insertion Loss (a) at
196 kHz (dB/kft)
Loop Attenuation
(dB/kft)
Maximum Reach (kft)
Span 1
Maximum Reach (kft)
Span 2 and Span 3
Ω per kft
26/0.4 mm
3.88
2.8
12
11.0
83
24/0.51 mm
2.84
2.0
16
15.0
52
22/0.61 mm
2.18
1.6
21
20.6
32
19/0.91 mm
1.54
1.1
29
27.8
16
(a) Insertion Loss = 1.38 times loop attenuation
H4TU-C-319 List 1
September 12, 2003
61
Appendix A - Specifications
LTPH-UM-1031-03, Issue 3
H4TU-C-319 CARD-EDGE CONNECTOR
Figure 32 shows the card-edge connectors on the H4TU-C-319. Active pins are highlighted in black.
(IN) DSX-1Tip
A
1
DSX-1 Ring (IN)
(OUT) DSX-1Tip 1
B
2
DSX-1 Ring 1 (OUT)
C
3
D
4
E
5
GND
HDSL4 - L1Tip
F
6
HDSL4 - L1 Ring
System Alarm**
H
7
Management Bus**
Frame GND
J
8
-48 Vdc
HDSL4 - L2Tip
K
9
HDSL4 - L2 Ring
(Do not use)
L
10
Fuse Alarm*
* Fuse Alarm
Normal = Floating (0 to -60 Vdc maximum)
Activated = -48 Vdc (10 mA maximum)
** System Alarm and Management Bus (reserved)
Figure 32.
H4TU-C-319 Card-Edge Connector
Network Management Control Bus
The H4TU-C provides a Network Management Control Bus on pin 7 of the card-edge connector. This allows the
various Management System protocols to manage the H4TU-C through the HMU-319. Whenever the H4TU-C is
under management, the MNGD message displays periodically on the front-panel display.
Some H4TU-C-319 features are affected when it is under management. Consult the management
unit practice for further information (see “Appendix D - Product Support” on page 66).
Fuse Alarm
Pin 10 on the card-edge connector is a Fuse Alarm that is driven to -48 Vdc whenever its onboard fuse opens. It
emulates the function of the Fuse Alarm output from pin 10 on normal, high-density (HD) repeaters. Pin 10 is
connected to pin 5 of the 1184 Alarm Card (slot 1 in the HD shelf) and causes the 1184 Fuse ALM LED to light
when the pin 10 signal is activated. Its normally floating output must never be driven above ground or below
-80 V. It can sink a current of 10 mA. The H4TU-C does not support the BPV function (Pin E) of normal HD
repeaters.
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September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Appendix A - Specifications
System Alarm Output Pin
Pin H on the card-edge connector (see Figure 33 on page 63) is the H4TU-C-319 System Alarm output pin. The
following notes apply to Pin H:
•
Pin H replaces the Local Loss of Signal (LLOS) on normal high-density (3192) repeaters.
•
The normally floating output of Pin H can connect to pin 1 of the 1184 or 3192-9F Alarm Card in position 29
of the High Density (HD) shelf.
•
The H4TU-C forces pin H to +5Vdc (maximum of 10 mA) for a system alarm condition. Pin H then remains
at +5 Vdc for the duration of the alarm condition.
•
If the Wescom 1184 Alarm Card is installed in the shelf, its LOS LED lights for every minor alarm
(MNRALM).
•
The H4TU-C Status LED flashes red for the duration of a system alarm condition.
•
Setting the ALM option to DIS only prevents the system alarm bus on Pin H from being activated for a system
alarm event. The Status LED still flashes red and the ALRM message still displays.
Pin H must never be taken above +5 Vdc or below -60 Vdc.
CRAFT PORT
Figure 33 shows the pinout for the craft port connection and its connection to a DB-9 or DB-25 connector on a
maintenance terminal.
Terminal
DB-9 Connector
(DTE)
2
H4TU-C-319
3
DB-9 Connector
(DCE)
5
2
TD (Transmit Data)
3
RD (Receive Data)
5
Terminal
GND
DB-25 Connector
(DTE)
3
2
7
Figure 33.
H4TU-C-319 List 1
RS-232 Craft Port Pinouts
September 12, 2003
63
Appendix B - Functional Operation
LTPH-UM-1031-03, Issue 3
APPENDIX B - FUNCTIONAL OPERATION
HDSL4 technology provides full-duplex services at standard T1 rates over two pairs of copper wire between an
H4TU-C, H4Ds (if necessary), and an H4TU-R which comprise one ADC system. ADC systems use Overlapped
Pulse Amplitude Modulation Transmission (OPAM) transceiver systems to establish two, full-duplex, 784 kbps
data channels between the H4TU-C-319 and a remotely located H4TU-R.
A block diagram of the H4TU-C-319 is shown in Figure 34. The H4TU-C-319 receives a 1.544 Mbps DSX-1 data
stream from the DSX-1 digital cross-connect interface. The H4TU-C-319 contains a DS1 frame synchronizer
controlled by an 8-bit microprocessor that determines the type of framing on the DS1 stream and synchronizes
with it. The H4TU-C-319 recognizes Superframe (SF), including D4, or Extended Superframe (ESF) framing.
When the data is unframed, the H4TU-C-319 arbitrarily defines a frame bit.
Tip A
DSX-1
Ring 1
XMT
HDSL
XCVR
BRG
LINE
Fuse 10
Alarm
A
B
GND 5
Power
Supply
HDSL4-L1
6
Ring
A
MUX
BAT 8
Tip
F
T1
Framer
B
DEMUX
-185 Vdc or +/-123Vdc
Power Supply
(Ground Isolated
and Ground Fault Detect)
Network Management 7
Frame GND J
MODE SEL (ACO)
System Alarm H
HDSL
XCVR
Pre-equalizer
Select
LINE
Microprocessor
Tip
K
HDSL4-L2
9
Ring
BRG
Tip B
DSX-1
Ring 2
Status
RS-232
RCV
Figure 34.
H4TU-C-319 List 1 Block Diagram
TIMING
The low-loop wander (0.5 UI max) of an H4TU-C, when used with remote units, allows the circuit to be used in
all critical timing applications, including those used to transport Stratum 1 timing.
GROUND FAULT DETECTION
The H4TU-C has a Ground Fault Detection (GFD) circuit which detects a ground or a resistive path to ground on
any wire of the HDSL4 loop. This makes the product compliant with the Class A2 requirements of GR-1089.
SPECTRUM ISSUES
The asymmetric 776 kbps spectrum, defined in ANSI T1.418 Issue 2, allows the HDSL4 product to be spectrally
compatible with ADSL services in adjacent pairs in the same binding groups for all non-doubler applications. A
combination of asymmetric and symmetric spectrums is used for ADSL compatibility in doubler applications.
64
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Appendix C - Compatibility
APPENDIX C - COMPATIBILITY
The HDSL4 system uses HDSL4 transmission technology as recommended by ANSI committee in compliance
with the August 1999 T1-E1.4/99-006R5 HDSL4 standards.
The H4TU-C List 1 is designed to mount in the following shelves with 3192 mechanics:
•
HMS-317 (28-slot, 23-inch shelf)
•
HMS-318 (22-slot, 19-inch shelf)
•
HMS-357 (28-slot, 23-inch shelf)
•
HMS-358 (28-slot, 23-inch shelf)
•
HHS-319 (3-slot, 19-inch horizontal shelf)
•
HCS-402 (2-slot) with a 150-1192-01 adaptor
•
HMS-308 (8-slot remote enclosure)
•
Charles Ind. #3192 (28-slot connectorized)
•
Charles Ind. #3192-WR (28-slot wire wrap)
•
Charles Ind. #343-00 (12- to 14-slot wire wrap)
•
Charles Ind. #319-02 (22-slot connectorized)
•
Charles Ind. #319-04 (22-slot wire wrap)
•
Charles Ind. #340-00 (9-slot to 11-slot wire wrap)
•
Larus #1185 (28-slot connectorized)
Charles Ind. 343-00 and 340-00 shelves do not support the H4TU-C-319 System Alarm output on
pin H. Also, if slots 1 and 2 of these shelves were wired for the 3408 Fault Locate unit, they must
be rewired to accept the H4TU-C-319.
H4TU-C-319 List 1
September 12, 2003
65
Appendix D - Product Support
LTPH-UM-1031-03, Issue 3
APPENDIX D - PRODUCT SUPPORT
ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products.
Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center.
Sales Assistance
800.366.3891
Systems Integration
800.366.3891
• Quotation Proposals
• Ordering and Delivery
• General Product Information
• Complete Solutions (from concept to
installation)
• Network Design and Integration Testing
• System Turn-Up and Testing
• Network Monitoring (upstream or downstream)
• Power Monitoring and Remote Surveillance
• Service/Maintenance Agreements
ADC Technical Assistance Center
800.638.0031
Email: wsd_support@adc.com
• Systems Operation
• Technical Information
• System/Network Configuration
• Product Specification and Application
• Training (product-specific)
• Installation and Operation Assistance
Online Technical Support
Online Technical Publications
Product Return Department
800.366.3891
Email: rma@adc.com
• Troubleshooting and Repair/Field Assistance
• www.adc.com/Knowledge_Base/index.jsp
• www.adc.com/documentationlibrary/technicalpu
blications/
• ADC Return Material Authorization (RMA)
number and instructions must be obtained
before returning products.
All telephone numbers with an 800 prefix are tool-free in the USA and Canada.
66
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
Appendix E - Abbreviations
APPENDIX E - ABBREVIATIONS
A
D
ACO:
Alarm Cutoff
DBER:
DS1 Bit Error Rate
ADSL:
Asymmetyric Digital Subscriber Line
DDS:
Digital Data Service
AIS:
Alarm Indication Signal
DL:
Data Link
ALM:
Alarm
DLC:
Digital Loop Carrier
ALMP: Alarm Pattern
DS1:
Digital Signal, Level 1
AMI:
Alternate Mark Inversion
DSX-1: Digital Signal Cross-Connect, Level 1
AOR:
Addressable Office Repeater
ARM:
Armed
ASCII:
American Standard Code for Information Interchange
AWG:
American Wire Gauge
B
E
ECI:
Equipment Catalog Item
EQL:
Equalization
ESD:
Electrostatic Discharge
ESF:
Extended SuperFrame
B8ZS:
Bipolar with 8-Zero Substitution
ES-L:
Errored Seconds - Line
BER:
Bit Error Rate
ES-P:
Errored Seconds - Path
BERT:
Bit Error Rate Tester
BPV:
Bipolar Violation
BPVT:
Bipolar Violation Transparency
BRG:
Bridge
F
FE:
Far End
FRMG: Framing
H
C
CEV:
Controlled Environmental Vault
CI:
Customer Installation
CLEI:
Common Language Equipment Identifier
CLOC:
Customer Local Loopback
CO:
Central Office
COLB:
Central Office Loopback
CPE:
Customer Premises Equipment
CRC:
Cyclical Redundancy Check
CREM: Customer Remote Loopback
CSA:
Carrier Service Area
CV:
Code Violation
CV-L:
Code Violation - Line
CV-P:
Code Violation - Path
H4TU-C-319 List 1
H4TU-C: HDSL4 Line Unit
H4TU-R: HDSL4 Remote Unit
HBER:
HDSL4 Block Error Rate
HCDS: High Capacity Digital Service
HDSL:
High-bit-rate Digital Subscriber Line
HG:
HDSL Generic
HMU:
HiGain Management Unit
I
ID:
Identification
ILR:
Intelligent Repeater Loop
IN:
Transmit
INSL:
Insertion Loss
IOR:
Intelligent Office Repeater
September 12, 2003
67
Appendix E - Abbreviations
L
LTPH-UM-1031-03, Issue 3
PRM:
Performance Report Messaging
LA:
Loop Attenutation
PRM-FE: Performance Report Messaging - Far End
LAIS:
Line Alarm Indication Signal
PRM-NE: Performance Report Messaging - Near End
LATT:
Loop Attenuation
PWRF: Power Feed
LBPV:
Local Bipolar Violation
LBTO:
Loopback Timeout
LED:
Light Emitting Diode
LLOS:
Line (Unit) Loss of Signal
LOF:
Loss of Frame
LOSW: Loss of Sync Word
LPDN:
Loopdown
LPF:
Line Power Feed
LRAI:
Line (Clear) Remote Alarm Indication
M
M:
HDSL4 Margin
MAL:
Margin Alarm
MARG: Margin
MNGD: Managed
MSEC: Monitored Seconds
R
RAI:
Remote Alarm Indication
RAI-CI: Remote Alarm Indication - Customer Installation
RAIS:
Remote Alarm Indication Signal
RDA:
Remote Disconnect Alarm
RLOS:
Remote (Unit) Loss of Signal
RRAI:
Remote RAI
RTPV:
Remote Provisioning
RULB:
Remote Unit Loopback
S
S/N:
Signal-to-Noise Ratio
SDSL:
Symmetrical Digital Subscriber Line
SES:
Severely Errored Seconds
SES-L: Severely Errored Seconds - Line
SES-P: Severely Errored Seconds - Path
N
SF:
NE:
Near End
NI:
Network Interface
NID:
Network Interface Device
NLBP:
Network Loopback Pattern
NLOC:
Network Local Loopback
NMA:
Network Management and Administration
NREM: Network Remote Loopback
SMJK: SmartJack
T
TLOS:
Transmit Loss of Signal
U
UAS :
Unavailable Seconds
UAS-L: Unavailable Seconds - Line
UAS-P: Unavailable Seconds - Path
O
OPAM: Overlapped Pulse Amplitude Modulation
OUT:
SuperFrame
UNFR: Unframed
Receive
P
PBOC:
Power Back Off - Customer
PBON: Power Back Off - Network
PL:
Payload
POTS:
Plain Old Telephone Service
68
September 12, 2003
H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3
H4TU-C-319 List 1
Appendix E - Abbreviations
September 12, 2003
69
CERTIFICATION AND WARRANTY
FCC CLASS A COMPLIANCE
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the interference at his own expense.
LIMITED WARRANTY
ADC DSL Systems, Incorporated (“ADC”) warrants that, for a period of sixty (60) months from the date of shipment, the hardware portion
of its products will be free of material defects and faulty workmanship under normal use. ADC's obligation, under this warranty, is limited to
replacing or repairing, at ADC's option, any such hardware product which is returned during the 60-month warranty period per ADC's
instructions and which product is confirmed by ADC not to comply with the foregoing warranty.
ADC warrants that, for a period of 90 days from the date of purchase, the software furnished with its products will operate substantially in
accordance with the ADC published specifications and documentation for such software. ADC’s entire liability for software that does not
comply with the foregoing warranty and is reported to ADC during the 90-day warranty period is, at ADC’s option, either (a) return of the
price paid or (b) repair or replace of the software. ADC also warrants that, for a period of thirty (30) days from the date of purchase, the media
on which software is stored will be free from material defects under normal use. ADC will replace defective media at no charge if it is returned
to ADC during the 30-day warranty period along with proof of the date of shipment.
The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer. ADC will pay transportation charges for
shipment of replacement products to Buyer, unless no trouble is found (NTF), in which case the Buyer will pay transportation charges.
ADC may use reconditioned parts for such repair or replacement. This warranty does not apply to any product which has been repaired, worked
upon, or altered by persons not authorized by ADC or in ADC's sole judgment has been subjected to misuse, accident, fire or other casualty,
or operation beyond its design range.
Repaired products have a 90-day warranty, or until the end of the original warranty period—whichever period is greater.
ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO ITS PRODUCTS
AND ANY ACCOMPANYING WRITTEN MATERIALS. FURTHER, ADC DOES NOT WARRANT THAT SOFTWARE WILL BE
FREE FROM BUGS OR THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE, OR THE RESULTS OF THE USE,
OF THE SOFTWARE IN TERMS OF CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
MODIFICATIONS
Any changes or modifications made to this device that are not expressly approved by ADC DSL Systems, Inc. voids the user's warranty.
All wiring external to the products should follow the provisions of the current edition of the National Electrical Code.
SAFETY STANDARDS COMPLIANCE
The H4TU-C-319 List 1 has been tested and verified to comply with the applicable sections of the following safety standards:
•
GR 63-CORE - Network Equipment-Building System (NEBS) Requirements
•
GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety
•
Binational standard, UL-60950/CSA-C22.2 No. 60950-00: Safety of Information Technology Equipment
For technical assistance, refer to “Appendix D - Product Support” on page 66.
World Headquarters
ADC Telecommunications, Inc.
PO Box 1101
Minneapolis, Minnesota USA 55440-1101
For Technical Assistance
Tel: 800.366.3891
ISO 9001/TL 9000
DOCUMENT: LTPH-UM-1031-03, ISSUE 3
DNV Certification, Inc.
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REGISTERED FIRM
1274229
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