Nortel Networks Circuit Card 311 User Manual
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706
NT8D14 Universal Trunk card
The VNL class of service is assigned at the prompt CLS with the response
VNL. The non-VNL class of service is assigned at prompt CLS by selecting
either the Transmission Compensated (TRC) or Non-Transmission
Compensated (NTC) response.
Non-VNL trunks are assigned a TRC or NTC class of service to ensure
stability and minimize echo when connecting to long-haul trunks, such as
Tie trunks. The class of service determines the operation of the switchable
pads contained in each unit. They are assigned as follows:
Figure 219
Universal trunk card - jumper locations for NT8D14BA and NT8D14BB Release 9 and below
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
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