DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
About this Book
xviiiHow to Use this Document
document also assumes that the system was initially installed and tested
properly and brought into service with all faults cleared. Adjuncts and other
devices external to the switch are covered by their own service documentation.
How to Use this Document
Most maintenance sessions involve analyzing the Alarm and Error Logs to
diagnose a trouble source and replacing a component such as a circuit pack.
The information in Chapter 9, ‘‘Maintenance Object Repair Procedures’’
will
generally suffice to address these needs. Certain complex elements of the
system, such as fiber links and the packet bus, require a more comprehensive
approach. Special procedures for these elements appear in Chapter 5, ‘‘Alarms,
Errors, and Troubleshooting’’.
This document is not intended to solve all levels of trouble. When the limits of
these procedures have been reached and the problem has not been resolved, it
is the technician’s responsibility to escalate to a higher level of technical support.
Escalation should conform to the procedures in the
Technical and Administration
Plan
.
Organization
■ Chapter 1, ‘‘Maintenance Architecture’’, describes the system’s design
and maintenance strategy.
■ Chapter 2, ‘‘Hardware Configurations’’, shows the locations and
arrangements of the system’s cabinets, carriers, circuit packs, and
cabling.
■ Chapter 3, ‘‘Management Terminal’’, describes how to set up and use the
management terminal.
■ Chapter 4, ‘‘Initialization and Recovery’’, describes the various reset and
reboot processes and how these are used to perform maintenance and
recover systems or subsystems that are out of service. Use of the terminal
SPE-down interface on non-functional or standby Switch Processor
Elements is included here.
■ Chapter 5, ‘‘Alarms, Errors, and Troubleshooting’’, describes general
repair procedures such as replacing circuit packs and special
troubleshooting procedures such as those for fiber link and packet bus
faults.
■ Chapter 6, ‘‘Additional Maintenance Procedures’’, describes preventive
maintenance, software updates and other procedures not associated with
specific alarms or components.
■ Chapter 7, ‘‘LED Interpretation’’, is a guide to interpreting indications given
by circuit pack and attendant console LEDs.
