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Plexus 9000 Planning and Engineering Guide
DS1 I/O Front Module
Section 130-120-400
Issue 4, April 23, 2004
Telica, Inc.
5-111
General Mechanical Representation ................................................5-112
Quad Framer And Line Interface Components (QFALCs).............. 5-116
To Switch Unit (TSU) and From Switch Unit (FSU) ......................5-116
Segmentation and Reassembly (SAR) ............................................. 5-116
Maintenance Link Bus Adapter (MLBA) ........................................ 5-117
Microprocessor and Memory ...........................................................5-117
Clocks and Synchronization............................................................. 5-117
DS1 Protection Module.................................................................... 5-117
DS-1 Loopback ................................................................................5-118
5.9.1 Scope
This section describes the front DS-1 IOM. It explains the module
functions, LED indicators, and connector interfaces.
The CLEI codes of the modules are as follows:
Part Numbers CLEI
Codes Comments
89-0360-A
BA9IAA0AAA
DS-1 only.
5.9.2
Functional Description
The Plexus 9000 accommodates up to 17 IOMs. The DS-1 IOM can
terminate 28 DS-1s that are converted to ATM cells and sent to the Switch
Fabric module. DS-1 IOMs can be installed in I/O-1 to I/O-17 slots
(physical slots 1-8, 11 and 14-21). The system’s ability to allow any line
interface module to occupy any I/O slot, along with the 1:N protection
capability, prevents the loss of valuable shelf space.