Nortel Networks 1000 - Manual (Page 623)

Configuration 623
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 203
Universal trunk card - jumper locations for NT8D14BA and NT8D14BB Release 9 and below
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
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