Nortel Meridian Meridian 1 Instruction manual

Meridian 1
General Maintenance Information
Document Number: 553-3001-500
Document Release: Standard 15.00
Date: January 2002
Year Publis FCC TM
Copyrig t © 1990–2002 Nortel Networks
All Rig ts Reserved
Printed in Canada
IInformation is subject to c ange wit out notice. Nortel Networks reserves t e rig t to make c anges in design
or components as progress in engineering and manufacturing may warrant. T is equipment as been tested
and found to comply wit t e limits for a Class A digital device pursuant to Part 15 of t e FCC rules, and t e
radio interference regulations of Industry Canada. T ese limits are designed to provide reasonable protection
against armful interference w en t e equipment is operated in a commercial environment. T is equipment
generates, uses and can radiate radio frequency energy, and if not installed and used in accordance wit t e
instruction manual, may cause armful interference to radio communications. Operation of t is equipment in a
residential area is likely to cause armful interference in w ic case t e user will be required to correct t e
interference at t eir own expense.
SL-1 and Meridian 1 are trademarks of Nortel Networks.

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General Maintenance Information
4
Revision history
January 2002
Standard 15.00. This is a global document and is up-issued for Meridian 1
Release 25.40.
April 2000
Standard 14.00. This is a global document and is up-issued for X11
Release 25.0x. ocument changes include removal of: redundant content;
references to equipment types except Options 11C, 51C, 61C, and 81C; and
references to previous software releases.
June 1999
Standard, release 13.00. This document is reissued for text edits. ue to the
extent of the changes, revision bars are not used.
ecember 1995
Standard, release 11.00. This document is reissued to include information on
the NT9 19 Call Processor Card. Changes are noted by revision bars in the
margins.
July 1995
Standard, release 10.00. This document is reissued to include information on
Meridian 1 option 81C and text edits. Changes are noted by revision bars in
the margins.
ecember 1994
Standard, release 9.0. This document is reissued to include the information on
Meridian 1 option 51C and other edits. Changes to technical content are noted
by revision bars in the margins.

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553-3001-500 Standard 15.00 January 2002
April 1994
Standard, release 8.0. This document is reissued to include the information on
Meridian 1 option 61C. Changes to technical content are noted by revision
bars in the margins.
April 1993
Standard, release 6.0. Changes to technical content are noted by revision bars
in the margins.
August 1993
Standard, release 7.0. Changes to technical content are noted by revision bars
in the margins.
ecember 1992
Standard, release 5.0. This document is reissued to include information on
system option 81 and equipment required for compatibility with X11 release
18. Only new information and changes to technical content are noted by
revision bars in the margins.
ecember 1991
Standard, release 4.0. This document is reissued to include technical content
updates. ue to the extent of the changes, revision bars are not used.
July 1990
Standard, release 3.0.
February 1990
Standard, release 2.0.
January 1990
Standard, release 1.0.

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General Maintenance Information
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Contents
About this document . . . . . . . . . . . . . . . . . . . . . . . 7
Precautions ............................... 9
Communicatingwiththesystem .............. 15
Routinemaintenance ....................... 25
Hardwaremaintenancetools ................. 27
Softwaremaintenancetools.................. 49
Userreports............................... 61
Technicalassistanceservice ................. 63

Page 6 of 72 Contents
553-3001-500 Standard 15.00 January 2002

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General Maintenance Information
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About this document
This document is a global document. Contact your system supplier or your
Nortel Networks representative to verify that the hardware and software
described is supported in your area.
This document describes maintenance features for all Meridian 1 systems.
The chapters in this document describe the following:
• Precautions: guidelines to avoid personal injury and equipment damage
• Communicating with the system: methods for exchanging information
with the system
• Routine maintenance: requirements for servicing batteries and air filters
• Hardware maintenance tools: descriptions of circuit card hardware, CPU
controls, system alarms, and system monitor indicators
• Software maintenance tools: descriptions of diagnostic programs, the
History File, and interactive diagnostics
• User reports: problems typically reported by users
• Customer technical assistance service: information on Nortel Networks
Technical Assistance Centers and services
This document does not provide procedures for locating faults, clearing
faults, or replacing equipment. See Fault Clearing (553-3001-510) to locate
and clear faults. See Hardware Replacement (553-3001-520) to replace faulty
equipment.

Page 8 of 72 About t is document
553-3001-500 Standard 15.00 January 2002
References
See the Meridian 1 Planning and Engineering Guide for the following:
•Library Navigator (553-3001-000)
•System verview (553-3001-100)
•Equipment Identification (553-3001-154)
See the Meridian 1 installation and maintenance guide for the following:
•System Installation Procedures (553-3001-210)
•Circuit Card: Installation and Testing (553-3001-211)
•Telephone and Attendant Console: Installation (553-3001-215)
•Fault Clearing (553-3001-510)
•Hardware Replacement (553-3001-520)
For an overview of software architecture, procedures for software installation
and management. and a detailed description of all features and services see
the following two documents:
•System Management (553-3001-300)
•Features and Services (553-3001-306)
See the Administration (553-3001-311) for a description of all administration
programs, Maintenance (553-3001-511) for maintenance programs, and the
System Messages (553-3001-411) for interpreting system messages.

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Meridian 1 General Maintenance Information
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Precautions
Contents
The following are the topics in this section:
Referencelist............................................. 9
General precautions . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Circuitcards .. .......................................... 10
atadisks.. ............................................. 12
Reference list
The following are the references in this section:
•X11 System Management (553-3001-300)

Page 10 of 72 Precautions
553-3001-500 Standard 15.00 January 2002
General precautions
Meridian 1 equipment is sensitive to static electricity and environmental
conditions. Follow the precautions in this chapter to avoid personal injury or
equipment damage.
Circuit cards
WARNING
Module covers are not hinged; do not let go of the covers. Lift covers
away from the module and set them out of your work area.
WARNING
To avoid the danger of electric shock, be very careful when you work
with power equipment and connections. Warning notices are displayed
and must be heeded.
There are no user repairable components or assemblies in the power
system. If a power unit fails, the complete unit must be replaced. o
not disassemble a power unit under any circumstances because of the
risk of electric shock.
WARNING
Circuit cards may contain a lithium battery. There is a danger of
explosion if the battery is incorrectly replaced. o not replace
components on any circuit card; you must replace the entire card.
ispose of circuit cards according to the manufacturer’s instructions.
WARNING
To avoid damage to circuit cards from static discharge, wear a
properly connected antistatic wrist strap when you work on Meridian 1
equipment.

Precautions Page 11 of 72
Meridian 1 General Maintenance Information
If a wrist strap is not available, hold one of the bare metal strips in a module
to discharge static. Figure 1 shows the recommended connection points for
the wrist strap and the bare metal strips you should touch.
Handle cards as follows:
• Handle cards by the edges only. o not touch the contacts or
components.
• Set cards in a protective antistatic bag. If an antistatic bag is not
available, hand-hold the cards, or set them in card cages unseated from
the connectors.
• Unpack or handle cards away from electric motors, transformers, or
similar machinery.
• Store cards in protective packing. o not stack cards on top of each other
unless they are packaged.
• Store cards in a dry, dust-free area.
Figure 1
Static discharge points
Wrist strap
connection point Bare metal strip
Wrist strap
connection point Bare metal strip
Power supply slot
Module
front
Module
rear

Page 12 of 72 Precautions
553-3001-500 Standard 15.00 January 2002
uring repair and maintenance procedures, do the following:
• Insert cards into compatible slots only.
• Turn off the circuit breaker or switch for a module power supply before
the power supply is removed or inserted.
• Software disable cards, if applicable, before they are removed or
inserted.
• Hardware disable cards, whenever there is an enable/disable switch,
before they are removed or inserted.
• Return defective or heavily contaminated cards to a repair center; do not
try to repair or clean them.
ata disks
Make sure disks are labeled with the software generic and issue number if you
remove them from the system.
Follow the precautions below to avoid damaging disks:
• Handle only the hard surface of the disk; never touch the recording
surface.
• Keep disks away from strong magnetic fields.
• Avoid exposing disks to extreme heat, rapid changes in temperature, or
high humidity.
• Store disks in a suitable container.
WARNING
In AC-powered systems, capacitors in the power supply must
discharge. Wait five full minutes between turning off the circuit
breaker and removing the power supply from the module.

Precautions Page 13 of 72
Meridian 1 General Maintenance Information
Before installing a new disk do the following:
• Check the disk identification to make sure it is the correct disk. Look for
any damage to the disk.
For more detailed information on data disks, see X11 System Management
(553-3001-300).
Note: No maintenance or cleaning is required on the disk drives.
CAUTION
The disk drive can be damaged if an upside-down disk is forced into
the slot. If there is significant resistance when you try to insert a disk,
remove the disk and check the position.

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553-3001-500 Standard 15.00 January 2002

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Meridian 1 General Maintenance Information
24
Communicating with the system
Contents
The following are the topics in this section:
Referencelist............................................. 15
Systemterminal........................................... 16
Messageformat.. ...................................... 16
Local and remote access . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Options 51C, 61C, 81, and 81C terminal and modem guidelines . . 18
Maintenancetelephone..................................... 22
Reference list
The following are the references in this section:
•System Management Applications (553-3001-301)
•System Messages (553-3001-411)
•Administration (553-3001-311)
•System Installation Procedures (553-3001-210)
•Fault Clearing (553-3001-510)
•Hardware Replacement (553-3001-520)
You can exchange information with the system through system terminals and
maintenance telephones. This chapter discusses these tools for
communicating with the system.

Page 16 of 72 Communicating wit t e system
553-3001-500 Standard 15.00 January 2002
Note: Before Release 19, only one device at a time can communicate
with the system. Accessing a device while another is logged in will log
out the device that was already connected. The Multi User Login feature,
available with Release 19 and later, allows more than one device to
interact with the Meridian 1. Refer to System Management Applications
(553-3001-301) for details on using this feature.
System terminal
You can send maintenance commands and receive system messages (status
and error messages) by accessing the Central Processing Unit (CPU) through
an RS-232 device, such as a video display terminal (V T) or teletypewriter
(TTY).
For most system options, only the code is displayed or printed when the CPU
sends system messages. For the interpretation of the code and any required
action, refer to System Messages (553-3001-411). Options 51C, 61C, 81, and
81C provide the code, a plain text explanation, and required actions.
Release 18 and later provide enhanced I/O buffering (independent
throughout). With this capability, devices with higher baud rates run faster
than devices that are limited to slower speeds.
Message format
Through the system terminal, you can enter commands that tell the system to
perform specific tasks; the system performs the tasks and sends messages
back to the system terminal, indicating status or errors. System messages,
along with indicators such as maintenance display codes and light emitting
diode (LE ) indicators, identify faults in the system.

Communicatingwit t esystem Page 17 of 72
Meridian 1 General Maintenance Information
System messages are codes with a mnemonic and number, such as PWR0014.
The mnemonic identifies an overlay program or a type of message. The
number identifies the specific message. Table 1 gives an example of the
format for a system message.
With options 51C, 61C, 81, and 81C, system messages generated from the
Core Common Equipment iagnostic (L 135) and the Core Input/Output
iagnostic (L 137) include the interpretation and any action required. For
example, if a CPU test from L 135 fails, the message displayed is
“CCE 200 CPU test failed Check the CP card.”
See Administration (553-3001-311) for a description of all maintenance
commands, and System Messages (553-3001-411) for the interpretation of all
system messages.
Table 1
System message format
System message:
PWR0014 Interpretation
PWR T is message (generated by t e system
monitor) indicates power and temperature
status or failures.
0014 T is message means t e system monitor failed
a self-test.

Page 18 of 72 Communicating wit t e system
553-3001-500 Standard 15.00 January 2002
Local and remote access
A terminal or a modem must remain permanently connected to an S I port in
a network slot to provide a constant I/O interface to the system. Although
only one device can communicate with the system at a time, many devices
can be installed at local and remote locations.
When a system terminal is installed locally, it is connected directly to a serial
data interface (S I) card, located within a module. When a system terminal
is installed at a remote location, modems (or data sets) and a telephone line
are required between the terminal and the S I card.
If a printer is connected to an S I port (locally or remotely), you must disable
XON/XOFF flow control so that no characters or signals are sent to the port,
to avoid a “ping-pong” effect.
Figure 2 shows typical system terminal configurations. See “Access through
the system terminal” in Fault Clearing (553-3001-510) or Hardware
Replacement (553-3001-520) for the access procedure.
For information specific to Options 51C, 61C, 81, and 81C, see “Options
51C, 61C, 81, and 81C terminal and modem guidelines” on page 18.
Options 51C, 61C, 81, and 81C terminal and modem
guidelines
Each Call Processor Card provides a data terminal equipment ( TE) port at
J21 and a data communication equipment ( CE) port at J25 on the Core and
Core/Network Module I/O panel. The designations TE and CE refer to the
function of the port, not the type of device that connects to the port. Therefore,
a modem (which is CE) connects to the TE port at J21, and a terminal
(which is TE) connects to the CE port at J25.
CAUTION
If a Hayes command-set compatible (smart) modem is used at the
Meridian 1 end, you must select the dumb mode of operation,
Command Recognition OFF and Command Echo OFF, before
connecting the modem to the S I port. Refer to the modem
instructions to set the mode of operation.

Communicatingwit t esystem Page 19 of 72
Meridian 1 General Maintenance Information
The input/output ports on the CP card (CPSI ports) are used for access to the
Core or Core/Network Module, which houses the card. The CPSI ports are
active only when the Core associated with the CP card is active. Therefore,
the CPSI ports should not be used as the only I/O connection for the system.
Note: For correct operation, terminals used with Options 51C, 61C, 81,
and 81C must be set to 9600 baud, 7 data, space parity, one stop bit, full
duplex, XON.
Figure 2
Local and remote access to a system terminal
Local access
system terminal
Meridian 1
modemmodem
telephone line
Remote access
system terminal
553-3000

Page 20 of 72 Communicating wit t e system
553-3001-500 Standard 15.00 January 2002
Figure 3 shows the recommended configuration for remote maintenance
monitoring on option 81, which also applies to option 51C, 61C, and 81C. In
this configuration, a switch box is normally set to the S I port to remotely
monitor general system operation. The CPSI ports can be accessed for
debugging and patch downloading (through your Nortel Networks
representative).
Figure 3
Modem to a switch box and S I and CPSI ports
553-5809
Note: The A0377992 switch box and A0381391 modem can be used in this configuration.
NT8D95 cable
J21 on
I/O panel
Switch box
NT8D95
cables
J21 on
I/O panel
NT8D95
cable
SDI port on
I/O panel
Dumb mode modem
RJ11
jack
Remote end
Smart mode
modem
RJ11
jack
RS-232
cable
Modem cable
(or NT8D46)
Modem cable
(or NT8D46)
Public phone
network
Terminal
Core/Net 0
Rear View
Core/Net 1
Network module