Nortel Communication Server 1000 User manual

Nortel Communication Server 1000
ISDN Basic Rate Interface
Maintenance
NN43001-718
.

Document status: Standard
Document version: 01.01
Document date: 30 May 2007
Copyright © 2003-2007, Nortel Networks
All Rights Reserved.
Sourced in Canada
The information in this document is subject to change without notice. The statements, configurations, technical
data, and recommendations in this document are believed to be accurate and reliable, but are presented without
express or implied warranty. Users must take full responsibility for their applications of any products specified in this
document. The information in this document is proprietary to Nortel Networks.
Nortel, the Nortel logo, and the Globemark are trademarks of Nortel Networks.
All other trademarks are the property of their respective owners.

3
Revision history
May 2007
Standard 01.01. This document is issued to support Communication
Server 1000 Release 5.0. This document contains information previously
contained in the following legacy document, now retired: ISDN Basic
Rate Interface: Maintenance (553-3001-518). No new content has been
added for Communication Server 1000 Release 5.0. All references to
Communication Server 1000 Release 4.5 are applicable to Communication
Server 1000 Release 5.0.
August 2005
Standard 3.00. This document is up-issued to support Communication
Server 1000 Release 4.5.
September 2004
Standard 2.00. This document is up-issued for Communication Server 1000
Release 4.0.
October 2003
Standard 1.00. This document is a new NTP for Succession 3.0. It was
created to support a restructuring of the Documentation Library, which
resulted in the merging of multiple legacy NTPs. This new document
consolidates information previously contained in the following legacy
documents, now retired:
•ISDN Basic Rate Interface Maintenance (553-3901-500)
•Basic Rate Interface (553-3011-311)
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

4Revision history
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

5
Contents
About this document 7
Subject 7
Applicable systems 7
Intended audience 8
Related information 8
Isolate and correct faults 11
Contents 11
Introduction 12
Fault detection and correction 12
Isolate faults 13
MISP fault isolation and correction 17
BRSC fault isolation and correction 32
SILC or UILC fault isolation and correction 39
MPH fault isolation and correction 52
ISDN BRI maintenance commands 57
Replace ISDN BRI cards 69
Contents 69
Introduction 69
Unpack replacement cards 69
Remove and replace the MISP 70
Remove and replace the SILC, UILC or BRSC 73
Verify the operation 74
Re-install covers 75
Pack and ship defective cards 75
Test and troubleshoot ISDN BRI terminals 77
Contents 77
Verify a new M5317T terminal installation 77
Troubleshoot the M5317T 78
Verify a new M5209T terminal installation 80
Troubleshoot the M5209T 83
Procedures
Procedure 1 Checking MISP status 18
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

6Contents
Procedure 2 Performing an MISP self-test 23
Procedure 3 Testing the MISP loopback at a DSL interface 26
Procedure 4 Testing the MISP loopback at the SILC or UILC bus
interface 29
Procedure 5 Performing an ISDN BRI trunk remote loopback test 31
Procedure 6 Perform a BRSC self-test 35
Procedure 7 Checking SILC or UILC status 40
Procedure 8 Checking the DSL status 47
Procedure 9 Performing a SILC or UILC self-test 51
Procedure 10 Unpacking replacement cards 70
Procedure 11 Removing the MISP 70
Procedure 12 Removing and Replacing the SILC or UILC 73
Procedure 13 Verifying the operation of an SILC, UILC or a BRSC card 74
Procedure 14 Verifying the operation of an MISP 75
Procedure 15 Re-installing the covers 75
Procedure 16 Packing and shipping the defective cards 76
Procedure 17 Verifying user operation 78
Procedure 18 Isolating switch problems 78
Procedure 19 Clearing error codes 79
Procedure 20 Restoring dial tone 79
Procedure 21 Running a self-test 80
Procedure 22 Running a panel test 81
Procedure 23 Assigning the test display language 82
Procedure 24 Checking power and cable connections 84
Procedure 25 Testing the telephone components 85
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

7
About this document
This document is a global document. Contact your system supplier or your
Nortel representative to verify that the hardware and software described
are supported in your area.
Subject This document describes ISDN Basic Rate Interface (BRI) maintenance
tools and procedures to assist in identifying faults, locating defective units,
correcting problems by fixing or replacing defective units, and verifying
operation after the corrections or replacements have been made.
This document focuses on the maintenance of ISDN BRI equipment installed
in Meridian 1 and CS 1000M systems, and requires that non-ISDN BRI
functions operate correctly before starting to diagnose ISDN BRI problems.
Please note the following:
•ISDN BRI trunking is not supported in North America.
•The Basic Rate Signaling Concentrator (BRSC) is not supported on
Small Systems and CS 1000S systems.
•The integrated Meridian 1 Packet Handler (MPH) is not supported on
Small Systems and CS 1000S systems.
Note on legacy products and releases
This NTP contains information about systems, components, and features
that are compatible with Nortel Communication Server 1000 Release 4.5
software. For more information on legacy products and releases, click the
Technical Documentation link under Support & Training on the Nortel
home page:
www.nortel.com
Applicable systems
This document applies to the following systems:
•Communication Server 1000S (CS 1000S)
•Communication Server 1000M Chassis (CS 1000M Chassis)
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

8About this document
•Communication Server 1000M Cabinet (CS 1000M Cabinet)
•Communication Server 1000M Half Group (CS 1000M HG)
•Communication Server 1000M Single Group (CS 1000M SG)
•Communication Server 1000M Multi Group (CS 1000M MG)
•Communication Server 1000E (CS 1000E)
Note: When upgrading software, memory upgrades may be required on
the Signaling Server, the Call Server, or both.
System migration
When particular Meridian 1 systems are upgraded to run CS 1000 Release
4.5 software and configured to include a Signaling Server, they become
CS 1000M systems. Table 1 "Meridian 1 systems to CS 1000M systems"
(page 8) lists each Meridian 1 system that supports an upgrade path to
a CS 1000M system.
Table 1
Meridian 1 systems to CS 1000M systems
This Meridian 1 system... Maps to this CS 1000M system
Meridian 1 PBX 11C Chassis CS 1000M Chassis
Meridian 1 PBX 11C Cabinet CS 1000M Cabinet
Meridian 1 PBX 51C CS 1000M Half Group
Meridian 1 PBX 61C CS 1000M Single Group
Meridian 1 PBX 81 CS 1000M Multi Group
Meridian 1 PBX 81C CS 1000M Multi Group
For more information, see one or more of the following NTPs:
•Communication Server 1000M and Meridian 1: Small System Upgrade
Procedures (NN43011-458)
•Communication Server 1000M and Meridian 1: Large System Upgrade
Procedures (NN43021-458)
•Communication Server 1000S: Upgrade Procedures (NN43031-458)
•Communication Server 1000E: Upgrade Procedures (NN43041-458)
Intended audience
This document is intended for individuals responsible for maintaining BRI
on the system.
Related information
This section lists information sources that relate to this document.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

Related information 9
NTPs
The following NTPs are referenced in this document:
•Features and Services (NN43001-506)
•Software Input Output Administration (NN43001-611)
•Software Input Output Reference - Maintenance (NN43001-711)
Online
To access Nortel documentation online, click the Technical Documentation
link under Support & Training on the Nortel home page:
www.nortel.com
CD-ROM
To obtain Nortel documentation on CD-ROM, contact your Nortel customer
representative.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

10 About this document
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

11
Isolate and correct faults
Contents This section contains information on the following topics:
"Introduction" (page 12)
"Fault detection and correction" (page 12)
"Newly installed ISDN BRI equipment" (page 12)
"Previously operating ISDN BRI equipment" (page 13)
"Isolate faults" (page 13)
"MISP fault isolation and correction" (page 17)
"Check MISP status" (page 17)
"Perform MISP self-test" (page 23)
"Perform MISP loopback tests" (page 24)
"Perform ISDN BRI trunk remote loopback test" (page 30)
"BRSC fault isolation and correction" (page 32)
"Check BRSC status" (page 33)
"Check status of BRSC card identification and loadware versions" (page 34)
"Check status of Terminal Endpoint Identifiers" (page 35)
"Perform BRSC self-test" (page 35)
"Perform BRSC loopback tests" (page 36)
"SILC or UILC fault isolation and correction" (page 39)
"Check SILC or UILC status" (page 40)
"Check the DSL status" (page 47)
"Perform SILC or UILC self-test" (page 51)
"MPH fault isolation and correction" (page 52)
"MPH loopback tests" (page 53)
"ISDN BRI maintenance commands" (page 57)
"MISP maintenance commands" (page 57)
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

12 Isolate and correct faults
"BRSC maintenance commands" (page 59)
"SILC and UILC maintenance commands" (page 60)
"MPH maintenance commands" (page 62)
"MISP and SILC/UILC message monitoring commands" (page 64)
"Application download and enable application failure messages" (page 66)
IntroductionThis chapter explains how to identify and clear ISDN BRI faults. It is
assumed that readers possess a basic knowledge of fault clearing methods
described in Communication Server 1000M and Meridian 1 Large System
Maintenance (NN43021-700), Communication Server 1000M and Meridian
1 Small System Maintenance (NN43011-700), and Communication Server
1000S Maintenance (NN43031-700).
Fault detection and correction
Based on whether ISDN BRI is newly installed and not yet operational, or
previously installed and not operating properly, try to determine the probable
cause of system or card failure.
Problems can occur in the following three areas:
•hardware
•configuration
•software
The types of faults requiring isolation and correction depend on whether
faults occur due to incorrect installation or are due to component failure.
For example, in a newly installed system, the fault might lie in any or all
of the three areas; however, in a mature system, the fault probably lies
in the hardware.
Newly installed ISDN BRI equipment
Problems occurring while installing ISDN BRI equipment are usually caused
by the following:
•improperly installed cards
•loose or improperly connected cables or improperly wired cross-connect
in the DSL
•incorrect software
•incorrect ISDN BRI configuration
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

Isolate faults 13
Previously operating ISDN BRI equipment
Problems occurring during the normal operation of ISDN BRI equipment
are usually caused by the following:
•faulty cards
•accidental cable disconnection
•faulty power supply
•improper environmental conditions
Isolate faultsFigure 1 "ISDN BRI fault isolate flowchart" (page 14) presents a flowchart
that reflects ISDN BRI service problems. Based on the symptoms that these
problems exhibit, the flowchart refers to test procedures in this document
that can resolve these problems.
If the problem cannot be resolved after exhausting all available diagnostic
tools and test procedures, list all the observed symptoms and contact your
technical service representative.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

14 Isolate and correct faults
Figure 1
ISDN BRI fault isolate flowchart
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

Isolate faults 15
Table 2 "ISDN BRI equipment problems" (page 15) lists the symptoms,
diagnoses, and possible solutions to ISDN BRI problems.
Table 2
ISDN BRI equipment problems
Symptoms Diagnosis Solution
Red LED on the MISP is
permanently on. The Multi-purpose ISDN Signaling Processor
(MISP) is faulty, has
not been configured, or is
disabled.
Program software
download (PSDL) has
failed due to MISP or disk
failure.
Check the MISP status - go to "MISP
fault isolation and correction" (page
17).
If all the MISPs in the system show
red LED on, check the program
software download; otherwise,
replace the defective MISP.
Automatic recovery routine
activates every 30 seconds
to enable or disable the
MISP as indicated by the
MISP LED flashing every
30 seconds.
Incompatibility between the
software configuration and
the application indicating
a missing or incorrectly
configured MISP.
The MISP is faulty.
Check that the MISP is installed in the
correct card slot. To verify the MISP
configuration parameters, refer to the
ISDN Basic Rate Interface Feature
Fundamentals (NN43001-580).
Go to "Perform MISP self-test" (page
23).
Red LEDs on one or more
S/T Interface Linecards
(SILCs), U Interface
Linecards (UILCs) or
Basic Rate Signaling
Concentrators (BRSCs)
are permanently on.
The SILCs and/or UILCs
and/or BRSCs are faulty,
disabled, or not configured.
Check the card status - go to "SILC
or UILC fault isolation and correction"
(page 39) or "Perform BRSC self-test"
(page 35).
Calls cannot be placed
or received on all SILCs
and/or UILCs or BRSCs
associated with a specific
MISP.
The MISP, BRSC(s), or
line cards are faulty, have
not been configured, or are
disabled.
Check the MISP status - go to "MISP
fault isolation and correction" (page
17).
Check the card status - go to "SILC or
UILC fault isolation and correction or
"Perform BRSC self-test" (page 35).
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

16 Isolate and correct faults
Symptoms Diagnosis Solution
Calls cannot be placed or
received on some SILCs
and/or UILCs or BRSCs
associated with a specific
MISP.
The SILCs and/or UILCs
or BRSCs are faulty or
disabled. The loop or the
module is disabled.
The signaling link between
the MISP and the BRSC,
SILCs, or UILCs is faulty.
Check the card status - go to "SILC
or UILC fault isolation and correction"
(page 39) or "Perform BRSC self-test"
(page 35).
Check the continuity of the signaling
channel - go to "MPH loopback tests"
(page 53).
Calls cannot be placed or
received on some Digital
Subscriber Loops (DSLs)
on a particular line card.
The DSLs are incorrectly
configured, not configured,
or disabled.
Signaling link between the
MISP, the BRSC, or the
SILCs or UILCs is faulty.
ISDN BRI terminal is faulty
or incorrectly configured.
Duplicate TEIs may exist
on the DSL
DSL wiring is faulty.
Check the status of each DSL - go
to "SILC or UILC fault isolation and
correction" (page 39) or "Perform
BRSC self-test" (page 35).
Check the signaling link between the
MISP and the BRSC, and the SILC
and/or SILCs - go to "MPH loopback
tests" (page 53).
Check the ISDN BRI terminal user
guide to ensure the terminal is
operating correctly.
PerformaTerminalEndpoint Identifier
(TEI) check on the DSL.
Check the DSL wiring.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

MISP fault isolation and correction 17
Symptoms Diagnosis Solution
Problems with features on
ISDN BRI terminals. Incorrect DSL and/or Terminal Service Profile
(TSP) configuration for
the connected ISDN BRI
terminals.
Verify the DSL and the TSP
parameters, with the configuration
procedures found in the ISDN
Basic Rate Interface Installation and
Commissioning (NN43001-318).
User reports problems
with calls on specific type
terminals.
Mismatch between the
DSL configuration and the
terminal type connected to
the DSL, a faulty terminal,
or a faulty connection to
the DSL.
Go to "SILC or UILC fault isolation
and correction" (page 39) or "Perform
BRSC self-test" (page 35). to check
the status of each DSL.
Check the DSL wiring.
Check the ISDN BRI terminal user
manual to determine if the terminal is
operating correctly and is configured
correctly.
MISP fault isolation and correction
The MISP provides a communication interface between the CPU and the
peripheral devices. It communicates with the CPU over the CPU bus. It
communicates with the BRSCs, the SILCs, and the UILCs over the Network
bus. Both buses are located on the Network module backplane. It uses one
network loop to interface with the BRSCs, the SILCs, and the UILCs.
The MISP processes the signaling information received on the D-channels
from the DSLs. If a BRSC is not used, the MISP also separates packet
data from signaling information and forwards it to the packet handler on
the D-channels.
Problems with the MISP may be caused by hardware faults, incorrect
configuration, disabled MISP, or continuity problems between the MISP and
other network cards connected to the network bus. To isolate and correct
the MISP-related problems, use the following procedures.
Check MISP status
To isolate and correct the MISP-related problems, follow the procedures
below.
Note: Throughout this section, on a Small System or CS 1000S system,
lll (loop) should be interpreted as c(card). Similarly, all references to
network loops or loop numbers should be interpreted as cards or card
slot numbers.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

18 Isolate and correct faults
Procedure 1
Checking MISP status
Step Action
1Log in on the maintenance terminal and load LD 32 (type in LD 32).
2Enter STAT lll, where lll is the MISP loop number.
If the response is
lll : MISP LOOP
mm DSBL nn BUSY
MISP lll: ENBL ACTIVATED xx/xx/xx xx:x
BRIL/BRIT : ENBL
then
The MISP loop is enabled,
where
•BRIL or BRIT is the ISDN line or trunk application on the MISP
(whichever is configured).
•mm = the number of disabled network timeslots on the MISP
network loop. This should be 0. If mm>0, disabled timeslots are
indicated. Go to "Check the SILC or UILC status". If a BRSC is
configured, go to "Check the BRSC status".
•nn = the number of busy network timeslots on the MISP network
loop.If a BRSC is not used, this number equals 2 x (number of
line cards + 1), where 1 indicates that packet data transmission
is configured; that is, there are 2 timeslots for each SILC or UILC
and an additional timeslot for packet handling. If a BRSC is used,
nn equals 2 x (number of line cards) + number of BRSCs + 1.
•xx/xx/xx xx:x = date and time the MISP base code was
activated.
If the response is
lll=MISP LOOP
DISABLED RESPONDING
MISP lll MAN DSBL
then
The MISP loop:
•has been manually disabled by DISL III;
•has an overload condition; or
•has failed the self-test when enabling this loop.
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

MISP fault isolation and correction 19
Enable the MISP loop by typing ENLL lll, where lll is the MISP
loop number. A message indicating that the MISP is enabled and
working is displayed on the console. Observe the red LED on the
MISP. If it extinguishes, the MISP is functioning correctly. If the
LED stays lit, the MISP probably failed the self-test and a message
should be displayed on the maintenance terminal. If the message
indicates that the MISP is faulty, If an overload condition exists,
the card is also faulty. In either case, replace the card. For Large
Systems, refer to the ISDN Basic Rate Interface Installation and
Commissioning (NN43001-318). For Small Systems and CS 1000S
systems, refer to the ISDN Basic Rate Interface Installation and
Commissioning (NN43001-318).
If the self-test fails, refer to "Perform MISP self-test" (page 23) for
corrective action.
If the response is
BRIL/BRIT: MAN DSBL
then
The BRIL/BRIT application is manually disabled.
Enable the MISP loop by typing ENLL lll, where lll is the MISP
loop number. A message indicating that the MISP is enabled and
working is displayed on the console. Observe the red LED on the
MISP. If it extinguishes, the MISP is functioning correctly. If the LED
stays lit, the MISP probably failed the self-test and a message should
be displayed on the maintenance terminal.If the message indicates
that the MISP is faulty, replace it.
If the response is
BRIL/BRIT:SYS DSBL
then
The BRIL/BRIT application is system-disabled.
Enable the MISP loop by typing ENLL lll, where lll is the MISP
loop number. A message indicating that the MISP is enabled and
working is displayed on the console. Observe the red LED on the
MISP. If it extinguishes, the MISP is functioning correctly. If the LED
stays lit, the MISP probably failed the self-test and a message should
be displayed on the maintenance terminal.If the message indicates
that the MISP is faulty, replace it.
If the response is
NO APPLICATION CONFIGURED
then
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ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.

20 Isolate and correct faults
The BRIL/BRIT application is not configured on the MISP. Configure
the BRIL/BRIT application. Refer to ISDN Basic Rate Interface
Feature Fundamentals (NN43001-580).
If the response is
lll=MISP LOOP
DISABLED RESPONDING
MISP lll SYS DSBL - xxxxxxxx
then
The MISP is responding, but the MISP loop:
•has been system-disabled
•an overload condition exists on the loop, or
•the self-test failed when enabling the MISP loop
where
xxxxxxxx may indicate one of the following:
•SELF TESTING - the card is performing self-test.
•SELFTEST PASSED - the card successfully completed self-test.
•BOOTLOADING - the base code is downloading to the MISP.
•SELFTEST FAILED - the self-test failed. Refer to "Perform MISP
self-test" (page 23).
•FATAL ERROR - the MISP has a serious problem. Perform an
MISP self-test or loopback test as detailed in "Perform MISP
self-test" (page 23) and "Perform MISP loopback tests" (page
24).
•SHARED RAM TEST FAILED - the card has a memory problem.
Check the memory allocation on the MISP card.
•OVERLOAD - the card is faulty and experienced an overload.
Replace the card.
•RESET THRESHOLD - the card reached the specified threshold,
which must be reset.
•STUCK INTERRUPT - hardware failure, interrupt is permanently
ON.
If the response is
lll=MISP LOOP
DISABLED NOT RESPONDING
MISP lll MAN DSBL
then
Nortel Communication Server 1000
ISDN Basic Rate Interface Maintenance
NN43001-718 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003-2007, Nortel Networks Nortel Networks Confidential
.