Nortel DMS-100 Series User manual

Critical Release
Notice
Publication number: 297-8361-550
Publication release: Standard 04.02
The content of this customer NTP supports the
SN07 (DMS) and ISN07 (TDM) software releases.
Bookmarks used in this NTP highlight the changes between the XPM14 baseline and the current
release. The bookmarks provided are color-coded to identify release-specific content changes. NTP
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Publication History
December 2004
Standard release 04.02 for software release ISN07 (TDM)/SN07 (DMS).
Modified Chapter 1, Chapter 2 and Chapter 4 for CR Q00945446.

297-8361-550
DMS-100 Family
Outside Plant Module
OPM Maintenance Manual
XPM14 and up Standard 04.01 September 2000

DMS-100 Family
Outside Plant Module
OPM Maintenance Manual
Publication number: 297-8361-550
Product release: XPM14 and up
Document release: Standard 04.01
Date: September 2000
Copyright © 1996-2000 Nortel Networks,
All Rights Reserved
Printed in the United States of America
NORTEL NETWORKS CONFIDENTIAL: The information contained herein is the property of Nortel Networks and is
strictly confidential. Except as expressly authorized in writing by Nortel Networks, the holder shall keep all information contained
herein confidential, shall disclose the information only to its employees with a need to know, and shall protect the information, in
whole or in part, from disclosure and dissemination to third parties with the same degree of care it uses to protect its own
confidential information, but with no less than reasonable care. Except as expressly authorized in writing by Nortel Networks, the
holder is granted no rights to use the information contained herein.
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as
progress in engineering and manufacturing may warrant. Changes or modification to the DMS-100 without the express consent of
Nortel Networks may void its warranty and void the users authority to operate the equipment.
Nortel Networks, the Nortel Networks logo, the Globemark, How the World Shares Ideas, Unified Networks, DMS, DMS-100,
Helmsman, MAP, Meridian, Nortel, Northern Telecom, NT, SuperNode, and TOPS are trademarks of Nortel Networks.

DMS-100 Family OPM Maintenance Manual XPM14 and up
iii
Contents
OPM Maintenance Manual
About this document ix
When to use this document ix
How to check the version and issue of this document ix
References in this document x
What precautionary messages mean x
How commands, parameters, and responses are represented xi
Input prompt (>) xi
Commands and fixed parameters xi
Variables xi
Responses xii
1 OPM maintenance summary 1-1
Description 1-1
OPM cabinet 1-2
OPM-256 optional equipment shelf 1-3
Line size upgrade equipment 1-3
Fiber multiplexer 1-5
Channel bank option 1-6
DE-4E Smart channel bank 1-7
Additional OPM components 1-9
Environmental control equipment 1-12
Environmental control operation 1-13
Electrical system 1-14
OPM power and environmental system maintenance 1-23
OPM battery backup system 1-24
OPM power matrix and example current demand 1-25
OPM power requirements 1-27
Calculating battery backup time 1-28
Standard discharge curve and charge time 1-29
Fault conditions 1-30
PES description 1-30
Alarm system 1-31
Load bus low voltage alarm 1-33
Automatic maintenance 1-34
Battery control and testing system 1-34
Hardware audit 1-36
Battery rotation and testing audit 1-37

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297-8361-550 Standard 04.01 September 2000
Normal battery rotation mode 1-39
Rotation disabled mode 1-46
ac failure mode 1-47
Increase to manual maintenance 1-48
Manual testing OPM systems 1-48
Manual battery actions and system voltage measurements 1-49
Querying PES alarms 1-51
On-site outside maintenance 1-54
Battery electrical inspection 1-55
Rectifier voltage adjustments LTU check 1-55
Battery capacity tests 1-56
Manual test procedures for system-failed battery strings 1-57
2 Functional overview 2-1
Functional description 2-1
Hardware description 2-1
General configuration 2-2
LCM 2-2
LCA shelf configuration 2-4
LCM control complex cards 2-5
Line drawers 2-6
HIE description 2-15
RMM 2-22
Frame supervisory panel (FSP) 2-25
Software description 2-27
Functional limits 2-28
Fault conditions 2-29
LCA shelf failure 2-29
Line drawer faults 2-30
Link failure 2-30
Load file mismatch 2-31
Automatic maintenance 2-31
OPM audits 2-32
Checksums 2-33
LCM LTC speech path diagnostics enhancements 2-33
Overload resources 2-35
Takeover capability 2-43
LCM talk battery audit 2-44
ESA capability 2-51
RMM maintenance 2-51
Drawer testing 2-51
BIC relay test (BRT) 2-54
Subscriber lines automatic maintenance 2-62
LCM REXTEST 2-62
System REX controller: XPM maintenance 2-64
Escalation to manual maintenance 2-71
Alarm conditions 2-71
Subscriber lines manual maintenance 2-73
Drawer maintenance 2-73

Contents v
DMS-100 Family OPM Maintenance Manual XPM14 and up
3 PRLCM overview 3-1
PRLCM configuration 3-1
International line concentrating module 3-3
Host interface equipment shelf 3-3
Remote maintenance module 3-8
Frame supervisory panel 3-9
Emergency stand alone description 3-10
ESA hardware representation 3-11
ESA operation 3-12
ESA hardware 3-13
Intracalling during ESA mode 3-14
ESA call processing 3-14
Channel configuration 3-14
Exiting PRLCM ESA mode 3-15
4 ESA maintenance overview 4-1
Functional description 4-1
ESA hardware representation 4-1
ESA operation 4-3
ESA hardware 4-4
In-service firmware downloading 4-9
Software operation 4-11
Intracalling during ESA mode 4-11
ESA call processing 4-11
ESA translation data 4-18
Supported subscriber line types 4-19
Supported subscriber services 4-20
Channel configuration 4-20
Exiting the OPM ESA mode 4-22
Ringing during ESA mode 4-25
Treatments during ESA mode 4-25
ESA limits 4-25
Fault conditions 4-27
Unusable communication links 4-27
Looparound message audit failure 4-27
Automatic ESA maintenance 4-28
ESA line audits 4-28
Digitone receiver audit 4-29
Automatic static data downloading and system maintenance 4-29
Routine exercise test 4-29
Escalation to manual maintenance 4-31
Loading ESA static translations data 4-31
ESA manual exit 4-32
LTC maintenance to prevent ESA mode 4-32
5 OPM hardware 5-1
OPM hardware components 5-1
Hardware configuration 5-1
Line concentrating module 5-1

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297-8361-550 Standard 04.01 September 2000
Host interface equipment 5-3
Frame supervisory panel 5-4
Additional OPM components 5-4
HIE components 5-4
Remote maintenance module 5-4
OPM configuration 5-5
OPM cabinet 5-5
OPM hardware components 5-6
Battery control unit 5-6
Environmental control unit 5-7
Rectifier system 5-7
Cable-connecting compartment 5-7
Additional OPM components 5-8
Calibration device 5-8
Digital Remote Test Unit 5-9
Fiber Multiplex Terminal-6 5-9
Additional OPM-256 components 5-9
OPM-256 optional equipment shelf 5-9
6 The OPM recovery procedures 6-1
OPM 6-2
7 OPM alarm clearing procedures 7-1
LCM critical 7-2
LCM (RG) critical 7-15
LCM talk battery alarm critical 7-24
LCM major 7-37
OPM (RG) major 7-46
Ext FSP OPM cabinet major 7-52
RMM major 7-71
LCM minor 7-80
RMM minor 7-93
ESA critical, minor 7-99
PM PES critical, major, minor 7-107
8 OPM card replacement procedures 8-1
NT0X10 in an OPM RMM 8-2
NT0X91AA in an OPM 8-6
NT0X91AE in an OPM 8-12
NT2X06 in an OPM RMM 8-21
NT2X09 in an OPM RMM 8-29
NT2X10 in an OPM RMM 8-37
NT2X11 in an OPM RMM 8-41
NT2X48 in an OPM RMM 8-45
NT2X57 in an OPM RMM 8-50
NT2X59 in an OPM RMM 8-54
NT2X70 in an OPM HIE 8-61
NT2X90 in an OPM RMM 8-75
NT3X09 in an OPM RMM 8-83
NT6X17 in an OPM 8-89

Contents vii
DMS-100 Family OPM Maintenance Manual XPM14 and up
NT6X18 in an OPM 8-93
NT6X19 in an OPM 8-97
NT6X20 in an OPM 8-101
NT6X21 in an OPM 8-105
NT6X27 in an OPM HIE 8-109
NT6X36 in an OPM 8-116
NT6X45 in an OPM HIE 8-121
NT6X47 in an OPM HIE 8-127
NT6X50 in an OPM HIE 8-133
NT6X51 in an OPM 8-140
NT6X52 in an OPM 8-147
NT6X53 in an OPM 8-153
NT6X54 in an OPM 8-165
NT6X60 in an OPM HIE 8-174
NT6X71 in an OPM 8-182
NT6X73 in an OPM HIE 8-186
NT6X74 in an OPM RMM 8-190
NT6X75 in an OPM HIE 8-197
NT6X99 in an OPM 8-204
NT8X02 in an OPM BCU 8-208
NTMX45 in an OPM HIE 8-213
Replacing a card 8-223
Replacing a line card 8-228
9 Locating and clearing OPM problems 9-1
10 Trouble isolation and correction 10-1
Description of troubleshooting procedures 10-1
Performance indicators 10-1
Locating and clearing faults 10-2
Fault isolation tests 10-3
Faulty line drawer 10-3
Faulty shelf circuit pack 10-3
Faulty line card 10-3
Faulty DS-1 link 10-4
Faulty ringing generator (RG) frequency generator circuit 10-4
Load file mismatch 10-4
Diagnostic tests 10-5
Bit error rate performance testing 10-5
XPM bit error ratio test 10-6
Entering XBERT 10-7
Lines maintenance 10-8
Automatic line testing 10-8
Station tests 10-10
Manual line testing 10-11
Product-specific test tools 10-11
Line maintenance cutover (LMCUT) 10-11

viii Contents
297-8361-550 Standard 04.01 September 2000
11 Troubleshooting chart 11-1
12 Advanced troubleshooting procedures 12-1
Powering-up the OPM 12-1
Powering-down the OPM 12-3
Common procedures 12-3
Troubleshooting a loading failure 12-4
Troubleshooting RTS failure 12-6
Troubleshooting dial tone problems 12-7
Troubleshooting ringing generator problems 12-8
13 OPM routine maintenance procedures 13-1
Battery capacity tests OPM 13-2
Battery, physical inspection OPM 13-10
Battery replacement OPM 13-13
Testing dampers OPM 13-20
Door alarms testing OPM 13-24
Dust removal OPM 13-28
Discharge test failure OPM 13-31
Open-circuit test failure OPM 13-34
Failure of post charge test OPM 13-38
Fan alarms testing OPM 13-42
Filters inspection for cooling unit OPM 13-46
Secondary (diffuser) filter replacement in cooling unit OPM 13-50
Filter replacement OPM 13-54
High temperature alarms testing OPM 13-57
Heaters testing OPM 13-61
Low temperature alarms testing OPM 13-65
Rectifier voltage adjustment OPM 13-69
Rectifier voltage check OPM 13-72
Rectifier replacement in an NT8X01AA, AB, BA, BB OPM 13-74
Rectifier replacement in an NT8X01AC, BC OPM 13-78
Site test OPM 13-81
Testing wrist strap grounding cords OPM 13-85
Testing power converter voltages HIE 13-88
Returning a card for repair or replacement OPM 13-91

DMS-100 Family OPM Maintenance Manual XPM14 and up
ix
About this document
When to use this document
This Outside Plant Module Module (OPM) maintenance reference manual
provides:overview,signaling,andhardware informationfor understanding the
OPM product and operation; recovery procedure for returning to service an
OPM from a completely out-of-service condition; alarm clearing procedures
for clearing an OPM alarm condition at the MAP display terminal; card
replacement procedures for removing and replacing hardware modules in the
OPM as part of maintenance, verification, or acceptance procedures; trouble
locating and clearing information for locating and clearing problems beyond
the scope of other maintenance procedures; routine maintenance procedures
for performing scheduled routine and preventive maintenance tasks. The
information in this maintenance manual is intended for operating company
personnel engaged in OPM maintenance.
How to check the version and issue of this document
The version and issue of the document are indicated by numbers, for example,
01.01.
The first two digits indicate the version. The version number increases each
time the document is updated to support a new software release. For example,
the first release of a document is 01.01. In the next software release cycle, the
first release of the same document is 02.01.
The second two digits indicate the issue. The issue number increases each
time the document is revised but rereleasedin the same software release cycle.
For example, the second release of a document in the same software release
cycle is 01.02.
To determine which version of this document applies to the software in your
office and how documentation for your product is organized, check the release
information in Product Documentation Directory, 297-8991-001.
This document is written for all DMS-100 Family offices. More than one
version of this document may exist. To determine whether you have the latest
version of this document and how documentation for your product is

x
297-8361-550 Standard 04.01 September 2000
organized,checkthe release information in Product Documentation Directory,
297-8991-001.
References in this document
The following documents are referred to in this document:
•DMS-100ProvisioningManual and OperationalMeasurementsReference
Manual
•Operational Measurements Reference Manual
•Extended Peripheral Module Translations Reference Manual
What precautionary messages mean
The types of precautionary messages used in NT documents include attention
boxes and danger, warning, and caution messages.
An attention box identifies information that is necessary for the proper
performance of a procedure or task or the correct interpretation of information
or data. Danger, warning, and caution messages indicate possible risks.
Examples of the precautionary messages follow.
ATTENTION - Information needed to perform a task
DANGER - Possibility of personal injury
ATTENTION
If the unused DS-3 ports are not deprovisioned before a DS-1/VT
Mapper is installed, the DS-1 traffic will not be carried through the
DS-1/VT Mapper, even though the DS-1/VT Mapper is properly
provisioned.
DANGER
Risk of electrocution
Do not open the front panel of the inverter unless fuses F1,
F2, and F3 have been removed. The inverter contains
high-voltage lines. Until the fuses are removed, the
high-voltage lines are active, and you risk being
electrocuted.

xi
DMS-100 Family OPM Maintenance Manual XPM14 and up
WARNING - Possibility of equipment damage
CAUTION - Possibility of service interruption or degradation
How commands, parameters, and responses are represented
Commands, parameters, and responses in this document conform to the
following conventions.
Input prompt (>)
An input prompt (>) indicates that the information that follows is a command:
>BSY
Commands and fixed parameters
Commands and fixed parameters that are entered at a MAP terminal are shown
in uppercase letters:
>BSY CTRL
Variables
Variables are shown in lowercase letters:
>BSY CTRL ctrl_no
The letters or numbers that the variable represents must be entered. Each
variable is explained in a list that follows the command string.
WARNING
Damage to the backplane connector pins
Align the card before seating it, to avoid bending the
backplane connector pins. Use light thumb pressure to
align the card with the connectors. Next, use the levers on
the card to seat the card into the connectors.
CAUTION
Possible loss of service
Before continuing, confirm that you are removing the card
from the inactive unit of the peripheral module.
Subscriber service will be lost if you remove a card from
the active unit.

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297-8361-550 Standard 04.01 September 2000
Responses
Responses correspond to the MAP display and are shown in a different type:
FP 3 Busy CTRL 0: Command request has been submitted.
FP 3 Busy CTRL 0: Command passed.

DMS-100 Family OPM Maintenance Manual ISN07 (TDM)/SN07 (DMS) and up
1-1
1 OPM maintenance summary
Description
The Outside Plant Module (OPM) is a reconfigured Remote Line
Concentrating Module (RLCM) packaged in an environmentally controlled
cabinet. The cabinet consists of a main compartment that contains the
following components:
•RLCM
• environmental control unit (ECU)
• remote maintenance module (RMM)
• host interface equipment (HIE)
• rectifiers
• ac circuit breakers
• batteries
The cabinet has an end compartment that contains the cable and wire
termination, protection and cross-connections.
The OPM contains a line concentrating module (LCM), HIE, RMM and ECU.
Like the LCM and the RLCM, the OPM supports all the line features available
at the host. These line features include:
• plain old telephone service (POTS)
• party lines
• coin lines
• Meridian Digital Centrex (MDC) stations
• business sets
• data units
• attendant consoles
• Datapath

1-2 OPM maintenance summary
297-8361-550 Standard 04.02 December 2004
Optional feature packages for intraswitching NTX156AA and emergency
stand-alone (ESA) operation NTX154AA are available with the OPM.
The OPM is available in two configurations. The configurations are as
follows:
1. The OPM-640. This configuration has a 640 subscriber line capacity
NT8X01AA, AB, AC.
2. The OPM-256. This configuration has a 256 subscriber line capacity
NT8X01BA, BB, BC.
The OPM-256 can have optional components for greater flexibility. Optional
components include the following:
• a line-size upgrade kit that increases the line size of the OPM-256 to 576
lines
• a channel bank option for special services
• a fiber interface option for fiber-optic connectivity
OPM cabinet
The OPM cabinet provides mechanical protection and a controlled
environment for the OPM electronic equipment. The cabinet contains
13-gauge cold-rolled steel. Special parts like the bay frames and base, use
thicker materials. The base is galvanized to provide additional corrosion
resistance.
The dimensions of the cabinet are 1676 mm wide by 1676 mm high by 660 mm
deep (66 in by 66 in by 26 in). An empty cabinet weighs approximately 400
kg (880 lb). A fully-equipped cabinet that includes electronics and batteries,
weighs approximately 1000 kg (2200 lb).
Main compartment
The main compartment of the OPM contains the RLCM, ac breakers,
rectifiers, batteries and the ECU.
Access the main compartment from the front of the cabinet by a pair of doors
that swing. Each cabinet door:
• is hinged with lock pins that are inside and can be padlocked
• opens approximately 120 degrees. A door check holds the door in the open
position
• has a door alarm, that is activated when the door is opened
A pair of swing-out, double-latched, hinged bays contain most of the
equipment. The hinged bays allow access to the rear of the shelves. The bays
also allow access to equipment positioned against the back wall of the cabinet.

OPM maintenance summary 1-3
DMS-100 Family OPM Maintenance Manual ISN07 (TDM)/SN07 (DMS) and up
Each hinged equipment bay contains three shelves for equipment for a total of
six shelves. Four shelves are used for OPM equipment. Refer to the figures
“Bay Frame Equipment Configuration, OPM-640 NT8X01AC" and “Bay
Frame Equipment Configuration, OPM-256 NT8X01BC". The line
concentrating arrays (LCA) that contain the 10 line drawers for the LCM,
occupy two shelves. The combined LCM for the OPM-256 is a one-shelf
module that contains two LCAs and four line drawers. A single shelf is empty.
Section “OPM-256 optional equipment shelf" describes the optional
equipment for the additional shelf. The RMM and HIE occupy two shelves.
The two shelves that remain contain a frame supervisory panel (FSP) that
includes:
• office repeaters
• a power control unit (PCU) for ac power
• a rectifier system that consists of a pair of switch mode rectifiers and a
battery control unit (BCU).
Two ECUs are present. A single ECU is present at the bottom of each bay.
End-access compartment
The left end of the cabinet contains the end-access compartment. A single door
that swings provides access to the compartment. The compartment contains
equipment required for voice frequency, special service and DS-1 pair
termination, protection and rearrangement.
The following components enter the OPM through sealed cable entrance ports
at the base of the cabinet:
• Subscriber VF cables
• commercial ac power
• cables that carry host DS-1
• special service pairs
The following sections of this chapter describes the structure and operation of
the LCM, HIE and RMM.
OPM-256 optional equipment shelf
Use the empty shelf of the OPM-256 for optional equipment. The following
sections describe the three available options. Refer to the figure “Bay Frame
Equipment Configuration, OPM-640 NT8X01AC".
Line size upgrade equipment
A 320-line upgrade kit NT8X09AB/AC/AD increases the total line size of the
OPM-256 to 576 lines. This option is installed without a loss in service. The

1-4 OPM maintenance summary
297-8361-550 Standard 04.02 December 2004
OPM will operate in the same way except for the additional line cards that are
present. The OPM now requires an additional scan card NT0X10 in the RMM
in slot 7.
The 320-line upgrade kits are as follows:
• NT8X09AB. Use this kit with OPMs equipped with the 4-pin protector
blocks option.
• NT8X09AC. Use this kit with OPMs equipped with the 5-pin protector
blocks with 50 foot cable stub option.
• NT8X09AD. Use with OPMs equipped with the 5-pin protector blocks
without the 50 foot cable stub option.