Nortel DMS-100 Series Maintenance Manual page 106

Remote line concentrating module

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2-4 PRLCM overview

The ringing generators produce voltages required for ANI and coin control

(48 V dc and 130 V dc). The ringing generators monitor ANI and coin

voltages and ring bus outputs for failure.

Link control cards

The two LCCs fill slots 17 and 18 of the HIE. Each LCC provides an

interface between eight DS30A ports from a PRLCM LCA shelf and the

PCM30 links to the host office. The LCCs also provide an interface

between the ESA processor, if the ESA processor is provisioned, and the

ILCM. The following diagram describes how the PCM30 links terminate on

the LCC and in the LCA.

LCC interface to PCM30 interface cards

297–8351–550 Standard 04.01 August 1999

To host office

I/S: intershelf link

Troubleshooting