Computer Hardware Installation Guide

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