Applications – Nortel Networks 1000 User Manual
Page 247
Applications
247
Test 3, network loopback, loops the received T1 data back toward the
CPE equipment. No test data is generated or received by the Lineside
T1 card. If test 2 passes but test 3 fails, it indicates that the CPE device
is defective. If test 2 was not run and test 3 fails, the T1 link or the CPE
device could be defective. To isolate the failure to the CPE device, tests
2 and 3 must be run in tandem.
Figure 47 "MMI Network loopback test"
demonstrates how the signaling is looped back toward the CPE
equipment.
Figure 47
MMI Network loopback test
Applications
The Lineside T1 interface is an IPE line card that provides cost-effective
connection between T1-compatible IPE and a system or off-premise
extensions over long distances.
Some examples of applications where a Lineside T1 card can be
interfaced to a T1 link are:
•
T1-compatible Voice Response Unit (VRU) equipment
•
T1-compatible turret systems
•
T1-compatible wireless systems
•
Remote analog (500/2500-type) telephones through T1 to a channel
bank
•
Remote Norstar sites behind CS 1000E, CS 1000M, and Meridian
1over T1
The Lineside T1 card is appropriate for any application where both
T1 connectivity and "lineside" functionality is required. This includes
connections to T1-compatible voice response units, voice messaging and
trading turret (used in stock market applications) systems. See
"Lineside T1 interface connection to IPE" (page 248)
.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.