Frame Supervisory Panel - Nortel DMS-100 Series Maintenance Manual

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RMM contains its own processor, which performs scanning of the service

circuits and digit collection during ESA.

The RMM C-side interface uses a pair of DS30A links, one to each LCC in the

HIE shelf. The DS30A links ensure the RMM is operable, regardless of which

LCC is active. The LCC passes maintenance requests from the host to the

RMM and provides a link between the RMM and line circuits in the LCA. At

the host ofﬁce, PRLCM maintenance is directed to the RMM using the MAP

terminal. The following ﬁgure shows how the RMM communicates with both

the host and the LCA through the LCC.

Figure 3-4 RMM connection with host and LCA through LCC

Frame supervisory panel

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 to the four cards that control the alarm

facilities and power converters in the RLCC cabinet. These cards and their

functions are as follows:

NT6X36AA Alarm card

This card is used to monitor the power converters in the RLCC cabinet, and

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

power converters.

NT6X36AC Fan Alarm card

This card is used to monitor the power in the RLCC cabinet related to the

fan cooling units located below shelf 05 which provides cooling for the

RLCM-EDC cabinet, and generates an alarm when an undervoltage or fan

failure condition occurs in the cabinet.

NT0X91AA Alarm and Converter Drive

DMS-100 Family OPM Maintenance Manual XPM14 and up

PRLCM overview 3-9