Nortel Networks Circuit Card 311 - Manual (Page 49)

Operation 49
Figure 11
Typical IPE trunk card architecture
The switch communicates with IPE modules over two separate interfaces.
Voice and signaling data are sent and received over DS-30X loops and
maintenance data is sent over a separate asynchronous communication
link called the card LAN link.
Signaling data is information directly related to the operation of the
telephone line. Some examples of signaling commands are as follows:
• off hook/on hook
• ringing signal on/off
• message waiting lamp on/off
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
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