Opm Hardware; Opm Hardware Components; Hardware Configuration; Line Concentrating Module - Nortel DMS-100 Series Maintenance Manual

5 OPM hardware

This chapter describes the Outside Plant Module (OPM) hardware
components that give subscribers the full resources of the digital switching
system. The following sections describe the hardware components and
additional components that OPM contains.

OPM hardware components

A standard DMS frame houses the OPM. The DMS frame has four shelves
and contains the following components:
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Hardware configuration
The layout of the OPM equipment, in a single DMS-100 equipment bay
appears in the figure OPM frame, shelf and panel arrangement. The
approximate external dimensions of the bay are 2208 mm by 685 mm by 457
mm (87 inches by 27 inches by 18 inches).

Line concentrating module

The LCM is the basic design building block of the remote peripheral group.
The control side (C-side) of an LCM interfaces with the host network over
DS30A links. The OPM connects to the host network over two to six DS-1
links through a connection controller peripheral. Possible connection
controller peripheral includes a line group controller (LGC), a line trunk
controller (LTC) or a remote cluster controller (RCC).
The LCM can function as an OPM when the LCM is connected to DS-1 links.
The DS30A ports of the LCM are mapped to DS-1 interface cards which
connect to the host office. This condition is the basic operating specification
behind the OPM. The DS30A ports are on the digroup control cards (DCC) of
the LCM.
line concentrating module (LCM)
host interface equipment (HIE)
frame supervisory panel (FSP)
remote maintenance module (RMM)
DMS-100 Family OPM Maintenance Manual XPM14 and up
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