Line Concentrating Module - Nortel DMS-100 Series Maintenance Manual

Maintenance overview 1-3
frame supervisory panel (FSP)
The lower part of the cabinet contains the LCM, consisting of two line
concentrating arrays (LCA). The upper part of the RLCC cabinet contains
the HIE shelf, the RMM shelf, and the FSP. The FSP provides power
control and alarm circuits for the LCM, HIE, and RMM shelves. Refer to
figure "RLCC cabinet, shelf, and panel arrangement" for the layout of the
RLCC equipment cabinet.

Line concentrating module

The LCM occupies shelf positions 05 and 19 of the RLCC cabinet. The dual
unit LCM contains two LCA shelves. LCA-0 is always the bottom array or
shelf and LCA-1 is the top array of the LCM.
Each LCA shelf is equipped with the new processor pack (NT6X51BA),
digroup controller card (DCC), power converter, and five line drawers.
Each line drawer connects up to 64 line card slots. The 64 line card slots are
divided into two groups of 32. Each group of 32 line card slots is called a
line subgroup (LSG).
The 10 line drawers and the 20 LSGs in the 2 LCA shelves are identified in
the following figure "RLCC cabinet, shelf, and panel arrangement."
DMS-100 Family Maintenance Manual ABSK007