Nortel Circuit Card 311 Reference page 23

Figure 2
Typical IPE analog line card architecture
DS-30X loops The line interfaces provided by the line cards connect to
conventional 2-wire (tip and ring) line facilities. IPE analog line cards convert
the incoming analog voice and signaling information to digital form and
route it to the Call Server over DS-30X network loops. Conversely, digital
voice and signaling information from the Call Server is sent over DS-30X
network loops to the analog line cards where it is converted to analog form
and applied to the line facility.
Copyright © 2003-2008, Nortel Networks
.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Line cards 23