Nortel DMS-100 Series User manual

Critical Release Notice
Publication number: 297-8213-550
Publication release: Standard 09.03
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Publication History
September 2004
Standard release 09.03 for software release SN07 (DMS) and ISN07 (TDM).
Change of syntax entry in Maintenance overview section on page 1-5 according to
CR Q00891462.
March 2004
Standard release 09.02 for software release SN06 (DMS) and ISN06 (TDM).
Change of phone number from 1-800-684-2273 to 1-877-662-5669, Option 4 + 1.

XPM10 and up Standard 09.01 August 1998
297-8231-550
DMS-100 Family
Subscriber Carrier
Module-100S
Maintenance Manual

DMS-100 Family SMS Maintenance Manual XPM10 and up
DMS-100 Family
Subscriber Carrier Module-100S
Maintenance Manual
1994, 1995, 1996, 1997, 1998 Northern Telecom
All rights reserved
Printed in the United States of America
NORTHERN TELECOM CONFIDENTIAL: The information contained in this document is the property of Northern
Telecom. Except as specifically authorized in writing by Northern Telecom, the holder of this document shall keep the
information contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third
parties and use same for evaluation, operation, and maintenance purposes only.
Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components
as progress in engineering and manufacturing may warrant.
DMS
, DMS SuperNode , MAP, and NT are trademarks of Northern Telecom.
Publication number: 297-8231-550
Product release: XPM10 and up
Document release: Standard 09.01
Date: August 1998

XPMTLC0001SMS XPM_PARTITION MICA
iii
Revision history
This document has been revised for release NA17. Information about
troubleshooting an SMS line equipped mismatch has been added in an
Appendix.

DMS-100 Family SMS Maintenance Manual XPM10 and up
iii
Contents
About this document vii
How to check the version and issue of this document vii
References in this document vii
What precautionary messages mean viii
How commands, parameters, and responses are represented ix
Input prompt (>) ix
Commands and fixed parameters ix
Variables ix
Responses ix
Maintenance summary 1-1
Functional description of the SMS 1-2
The SMS configuration 1-3
The SMS internal messaging 1-9
Spontaneous Call Waiting with disposition (DSCWID) 1-12
Thr XPM intermodule communication 1-17
The CM data synchronization 1-17
Information flows to and from the SMS 1-21
Call processing 1-25
Warm SWACT 1-33
Routine exercise test 1-42
ANI and coin functions 1-48
P-side channel management 1-52
SCM-100 operator verification 1-52
Functional description of the RCS 1-56
Modes 1-56
Derived data link 1-57
Functional description of the DS-link 1-58
SMS fault conditions 1-58
Parity on the XPM 1-59
Parity faults 1-60
Exception Traceback Enhancements (AF5680) 1-61
Memory allocation (AF5391) 1-61
Data mismatch 1-63
RCS fault conditions 1-67
Programmable power/miscellaneous alarm 1-67
DS-1 link fault conditions 1-68
SMS automatic maintenance 1-68
SMS basic audits 1-68
Pre-SWACT and post-SWACT audits 1-71

iv Contents
297-8231-550 Standard 09.01 August 1998
Digital phase lock loop (DPLL) clock failure 1-73
DS-1 link automatic maintenance 1-73
Protection switching 1-73
Subscriber lines automatic maintenance 1-84
Escalation to manual maintenance 1-85
Manual protection switching 1-85
SMS hardware 2-1
Hardware components 2-1
SMS module 2-3
The RCS module 2-5
The DS-1 links connecting the SMS and the RCS 2-5
Additional components 2-7
SMS signaling 3-1
Signaling for SMS 3-1
SMS-RCS signaling links 3-1
Signaling protocols 3-3
SMS-RCS signaling functions 3-6
Universal Tone Receiver (UTR) features 3-11
Converting from Mode I to Mode II 4-1
Mode I to Mode II conversion 4-1
Two available links 4-2
No available links 4-10
SMS recovery procedures 5-1
Recovering an SMS 5-2
SMS alarm clearing procedures 6-1
PM SMS critical 6-2
PM SMS major 6-5
PM SMS minor 6-20
Updating static data XPM 6-38
SMS card replacement procedures 7-1
NT2X70 SMS 7-2
NT6X40 in a SMS 7-14
NT6X41 SMS 7-29
NT6X42 SMS 7-38
NT6X44 SMS 7-47
NT6X69 SMS 7-55
NT6X78 SMS 7-65
NT6X80 SMS 7-73
NT6X85 SMS 7-81
NT6X86 SMS 7-91
NT6X92 SMS 7-100
NT7X05 SMS 7-108
NTMX71 SMS 7-118
NTMX77 SMS 7-127

Contents v
DMS-100 Family SMS Maintenance Manual XPM10 and up
Manually busying SMS C-side links 7-141
Returning a card for repair or replacement 7-149
Removing and replacing a card 7-153
Locating and clearing SMS trouble 8-1
Trouble isolation and correction 9-1
Locating and clearing faults 9-1
Problem condition indicators 9-1
Fault isolation tests for the SMS 9-3
Handling a SysB SMS unit 9-3
Handling an ISTb SMS unit 9-6
Handling an IMC link fault 9-8
Handling a parity error fault 9-8
Fault isolation tests for the RCS 9-16
RCS alarms 9-16
RCS fault isolation tests 9-18
Fault isolation tests for DS-1 link faults 9-19
Summary of carrier maintenance 9-19
Alarms 9-20
Fault isolation for subscriber lines 9-24
Subscriber lines maintenance 9-24
Manual lines testing 9-24
Maintenance scenarios 9-25
Diagnostic tests for the SMS 9-38
ROM diagnostic 9-38
A- and B-bit diagnostic 9-39
CSM diagnostic 9-39
Formatter diagnostic 9-40
Message diagnostic 9-40
Tones diagnostic 9-41
Speech path diagnostic 9-41
Time switch card diagnostic 9-41
Ring/pad card diagnostic 9-42
DS-1 card diagnostic 9-42
DS-1 DDL diagnostic 9-42
Testing the DDL card 9-43
P-side link diagnostic 9-44
CMR diagnostic 9-45
UTR diagnostic 9-46
XPM diagnostic history 9-47
Diagnostic tests for lines 9-53
Channel loss 9-53
Noise 9-53
Echo return loss 9-53
Loop detector 9-54
ANI and coin presence 9-54
Ringing 9-54
Coin collect and coin return 9-55
Product specified test tools 9-55

vi Contents
297-8231-550 Standard 09.01 August 1998
Troubleshooting chart 10-1
Clearing a SMS alarm 10-1
Clearing an RCS alarm 10-5
Advanced troubleshooting procedures 11-1
Advanced trouble locating procedures 11-1
Using the XPM footprint tool 11-1
Accessing the data collected 11-3
Limits 11-9
Powering up the SMS 11-9
Powering down SMS 11-10
SMS routine maintenance procedures 12-1
Inspecting cooling unit filters SMS 12-2
Replacing cooling unit filters SMS 12-7
Testing the dead system alarm SMS 12-10
Testing power converter voltages SMS 12-17
Returning a card for repair or replacement SMS 12-20
Testing wrist strap grounding cords SMS 12-24
Index 13-1

DMS-100 Family SMS Maintenance Manual XPM10 and up
vii
About this document
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 rereleased in 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
organized, check the release information in Product Documentation
Directory, 297-8991-001.
References in this document
The following documents are referred to in this document:
•Alarm Clearing Procedures
•Card Replacement Procedures
•Digital Interface Between the SLC96 Digital Loop Carrier System and a
Local Digital Switch, TR-TSY-000008
•Input/Output System Reference Manual, 297-1001-129
•PMDEBUG User Guide, Technical Assistance Manual, TAM-1001-004
•Product Documentation Directory, 297-8991-001

viii About this document
297-8231-550 Standard 09.01 August 1998
•Translations Guide
•XPM Translations Guide
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
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 Possibility of personal injury
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.
WARNING Possibility of equipment damage
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.

About this document ix
DMS-100 Family SMS Maintenance Manual XPM10 and up
CAUTION Possibility of service interruption or degradation
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.
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.
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.

x About this document
297-8231-550 Standard 09.01 August 1998
The following excerpt from a procedure shows the command syntax used in
this document:
Manually busy the CTRL on the inactive plane by typing
>BSY CTRL ctrl_no
and pressing the Enter key.
where
ctrl_no is the number of the CTRL (0 or 1)
Example of a MAP response :
FP 3 Busy CTRL 0: Command request has been submitted.
FP 3 Busy CTRL 0: Command passed.
1

DMS-100 Family SMS Maintenance Manual XPM10 and up
1-1
Maintenance summary
The subscriber carrier system consists of the Subscriber Carrier
Module-100S (SMS) and one or more Remote Concentrator SLC-96 (RCS)
modules. This document contains descriptions and step-by-step information
to maintain the system at an efficient operating level. This information
relates to the SMS, RCS, and DS-1 links.
This chapter provides the maintenance plan for the SMS-RCS subsystem.
The plan includes maintenance of the following:
•the SMS module
•the RCS module
•the DS-1 links that connect the SMS and RCS
•the line cards and subscriber loops
Note: An SMS is an extended peripheral module (XPM). When the
name XPM appears in this document, the related information applies
directly to the SMS. The related information also applies to the whole
class of XPM modules.
This chapter contains the following sections:
•Functional description. This section contains a summary of the SMS,
RCS, and DS-1 links. This section highlights the functions and the
software processes that support these functions.
•Fault conditions. This section identifies problems that can occur in the
following:
— components
— the links that connect these components
— the software that controls the voice and message flow
•Automatic maintenance. This section identifies the system actions that
identify and correct a fault. These system actions include:
— a switch of activity (SWACT)
— protection switching as a result of a defective DS-1 link

1-2 Maintenance overview
297-8231-550 Standard 09.01 August 1998
— routine exercise (REx) tests
— automatic subscriber lines tests
•Escalation to manual maintenance. This section discusses manual
protection switching. Manual protection switching occurs when the
SMS cannot switch a protection link into service. The SMS cannot
switch a protection link into service after the SMS detects a fault on a
primary link.
Note: The information in this chapter assumes that all components and
software processes function normally.
Functional description of the SMS
The SMS is a redundant peripheral module with two units. The SMS has an
active unit and a standby unit. The SMS units support call processing and
system control. The units operate in hot standby configuration. One unit is
active and the mate unit is on standby. When the system detects a fault on
the active unit, standby control on the mate unit takes over. This unit
maintains full control of the links until the system corrects the failure. The
units of the SMS are identical. The primary tasks of the SMS are as follows:
•interface to DS30 and DS-1 links
•connection of peripheral-side (P-side) and central-side (C-side) channels
— network to SMS to RCS messaging
— special service hairpin connections
— maintenance test connections. For example, a metal bypass to test
subscriber loops
•connections for calls that originate from the RCS
•report of call originations to the computing module (CM)
•connections and ring control for calls that terminate on the RCS
•supply of tones to the RCS-subscriber
— dial tone to request dialed digits
— busy tone to indicate the called party is already busy
— reorder tone to indicate the system cannot establish the connection
— ringback tone to indicate that the line of the party the calling party
calls is ringing

Maintenance overview 1-3
DMS-100 Family SMS Maintenance Manual XPM10 and up
•take down of connections to and from the RCS-subscriber
•record of dial pulse digits
•detection of use of flash feature
•forward messages RCS to CM and CM to RCS.
•reception and issue of coin service control messages that include:
— coin first pay stations
— dial tone first pay stations
— semi-post pay stations
•loss padding
•switch of activity (SWACT)
•download of provisioning data
•audit of hardware and internal records
•start of internal diagnostics
•protection switching
The SMS configuration
The SMS is based on line group controller (LGC) architecture. To convert
the LGC to the SMS, insert the three SMS cards. The three SMS cards are
as follows:
•the ring/pad card (NT6X80)
•the A/B-DDL card (NT6X86)
•the DS-1 interface card (NT6X85)
The configuration of the SMS based on the LGC architecture appears in the
SMS configuration diagram. A description of the configuration follows the
figure. Refer to this diagram when you read the description of the
following:
•the SMS connection to the DMS switch network through the DS30 links
•the SMS connection to the RCS through DS-1 links
•the function of the cards in each unit of the SMS

1-4 Maintenance overview
297-8231-550 Standard 09.01 August 1998
The SMS configuration
Time switch Time switch
A maximum of four ports for each plane A maximum of four ports for each plane
DS30 interface
Plane 1
DS30 interface
Plane 0
Ring/padRing/pad
Control
complex 0 Control
complex 1
128 channels 128 channels
plane select
Formatter 128 internal
service
channels
640-channel
parallel speech
bus
CSM
P
P
Formatter
plane select
128 internal
service
channels640-channel
parallel speech
bus CSM P
P
320
channels 320
channels
DS-1 interface
5 cards with
2 ports for each
card
DS-1 port assignments
320
channels
320
channels DS-1 interface
5 cards with
2 ports for each
card
DS-1 port assignments
Shelf 0 Shelf 1
The network attaches to the SMS with a maximum of four pairs of DS30
links. These links connect in the SMS to two DS30 interface cards
(NT6X40), one in shelf 0 and one in shelf 1. Each card supplies four DS30
ports, and provides a maximum of eight ports on a fully equipped SMS.
Plane 0 to plane 1 both have four dedicated ports. The system distributes
port assignments to the two DS30 cards. Plane 0 receives even-numbered
links. Plane 1 receives odd-numbered links. A minimum of three ports for
each SMS, three pairs of duplicated links, are required for interface with the
network module.