Remote Maintenance Module; Frame Supervisory Panel - Nortel DMS-100 Series Maintenance Manual

Remote line concentrating module

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Remote maintenance module

The RMM, occupies shelf position 56 in the PRLCM frame. The RMM is a

modified, cost-reduced form of the maintenance trunk module (MTM). The

RMM contains a processor that scans the service circuits and digit collection

The RMM C-side interface uses a pair of DS30A links. Each link connects

to each LCC in the HIE shelf. The DS30A links make sure the RMM

operates when either LCC is active. The LCC passes maintenance requests

from the host to the RMM. The LCC provides a link between the RMM

and line circuits in the LCA. At the host office, the MAP terminal directs

PRLCM maintenance to the RMM. The following diagram describes how

the RMM communicates with the host and the LCA through the LCC.

RMM connection with host and LCA through LCC

The FSP occupies shelf position 60 of the RLCC cabinet. The FSP provides

talk jacks, fuse alarm features, and power control for the RLCM. The FSP

contains 48-V distribution breakers. These breakers are for the four cards

that control the alarm facilities and power converters in the RLCC cabinet.

The following describes these cards and the functions of these cards:

NT6X36AA Alarm card

This card monitors the power converters in the RLCC cabinet. This card

generates an alarm when an undervoltage condition occurs in any of the

power converters.

NT6X36AC Fan Alarm card

DMS-100 Family RLCM Maintenance Manual XPM12 and up

PRLCM overview 2-9