Nortel Networks Circuit Card 311 - Manual (Page 315)

Applications 315
Figure 81
LEI connection to IPE
For example, the LEI can be used to connect the system to an E1-compatible
Voice Response Unit (VRU). An example of this type of equipment is Nortel
Open IVR system. In this way, the CS 1000E, CS 1000M, and Meridian
1 can send a call to the VRU, and, because the LEI supports analog
(500/2500-type) telephone functionality, the VRU is able to send the call
back to the system for further handling.
The LEI can also be used to provide off-premise extensions to remote
locations, up to 500 miles from the system. In this application, analog
telephone functionality is extended over E1 facilities, providing a telephone
at a remote site with access to analog (500/2500-type) telephone line
functionality. See
Figure 82 "LEI in off-premise extension application" (page
315) . Audible Message Waiting Indicator can be provided as well.
Figure 82
LEI in off-premise extension application
Similarly, use the LEI to provide a connection between the system and a
remote Norstar system. See
Figure 83 "LEI connection to Norstar system"
(page 316) . In this case, channel banks are not required if the Norstar
system is equipped with an E1 interface.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.