Maintenance Summary - Nortel DMS-100 Series Maintenance Manual

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:
This chapter contains the following sections:
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.
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
DMS-100 Family SMS Maintenance Manual XPM10 and up
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