Message Switch; Power Supply Module; Frame Supervisory Panel; Power Requirement - Nortel SL-100 Product Manual

102 Cabinet modular hardware
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The message switch interfaces allow the CM to communicate with the
rest of the Meridian SL-100 system through the Message Switch. Reset
terminals control, diagnose and report the status of the CPUs.

Message switch

The top half of the SuperNode cabinet contains the dual-shelf Message
Switch control complex and MS port interfaces. The fully duplicated
Message Switch performs the system message function and is the
messaging hub of the SuperNode system.
The MS contains the following:
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Power supply module

Each shelf consists of two Power Supply Modules (PSMs) at each end.
Each PSM consists of one +5 V/80 A and one -5 V/20 A power converter
circuit card.
The fan unit is supplied with -48 V for the four DC fan blowers. The power
drain for each shelf is 20 A at -48 V dc, and the power drain for the fan is 8
A at -48 V DC.
Total current required per bay is 80 A.

Frame Supervisory Panel

The Frame Supervisory Panel (FSP) controls alarms in the cabinet.

Power requirement

The SuperNode DPCC cabinet is powered by an external -48 V DC source
provided by the Meridian Cabinet Auxiliary Module (MCAM). These cabinets
are described in
127).
Copyright © 2006, Nortel Networks
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reset terminal interface
memory circuit cards
128-Mbytes per second message bus system
message switch control complex
provisionable message port interfaces, used for the connection to the
CM, NMs and IOC
central system clock, used for the synchronization of the Meridian
SL-100 system. Currently, this clock provides stratum 3 synchronization
internally. (Stratum 2 synchronization requires an added shelf in an
MCGM cabinet.)
"Maintenance and administration cabinet modules" (page
Communication Server 2100
Meridian SL-100 Product Guide
555-4001-103 20.01 Standard
SE09 20 October 2006
Nortel Networks Confidential