Nortel DMS 100 Series Maintenance Manual page 14

1-2 RSC-M maintenance introduction
requires an upgrade. Then the software indicates the addition of the RSC-M
PM type for messages and defaults to the GPP. This is a host from a base of a
CAS peripheral, or the RCO2.
The RSC-M supports an access multiplexer capability (AMC) interface to
public switched telephone networks (PSTN) that use CAS protocol with
dedicated bearer (voice) channels. Each subscriber line on a CAS AMC is
mapped to a specified voice channel on a PCM30 link. The RSC-M PCM30
links connected to CAS AMCs support 30 voice channels.
A RSC-M main shelf can support up to 22 PCM30 links. Each half extension
(EXT) shelf can support an additional 24 PCM30 links. The RSC-M main
shelf can support a total of 46 PCM30 links. A full RSC-M consists of one
main and one EXT shelf. A RSC-M can support a maximum of 1380 lines for
CAS AMC.
An RSC-M cabinet houses three RSC-M main shelves plus one full EXT shelf.
This configuration provides a total maximum capacity of 114 PCM30 links in
a cabinet. There must be at least one RSC-M main shelf configured in a
cabinet. The following figures illustrate the RSC-M configuration.
297-8223-550 Standard 04.02 November 2000