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Plexus 9000 Planning and Engineering Guide
DS1 I/O Rear Module
Section 130-120-450
Issue 3, April 23, 2004
Telica, Inc.
5-123
General Mechanical Representation ................................................5-124
Interface Protection Buses................................................................5-128
Line protection circuitry................................................................... 5-129
5.10.1 Scope
This section describes the DS-1 I/O rear module. It explains the module
functions and connector interfaces.
The CLEI codes of the modules are as follows:
Part Numbers CLEI
Codes Comments
89-0362 BA9IBC0AAA
89-0368 BA9IBB0AAA
Protection
5.10.2 Functional
Description
The system accommodates up to 17 IOMs. The DS-1 IOMs can terminate
up to 28 DS-1s. The rear modules provide the DS-1 IN and OUT
connectors. The rear protection module, part number 89-0368, does not
have IN and OUT connectors. The DS-1 IOM can be used in the original
chassis 85-3000 chassis, the 85-3004 chassis or the 85-3007 chassis.
I/O-7 (physical slot 7) is the DS-1 protection slot in all chassis. I/O-7
when used for DS-1 protection provides protection for DS-1 IOMs in any
slot. If the user does not desire to protect line- and trunk-side interfaces,
the system can be equipped with 17 interface modules in either chassis.