684 NT8D14 Universal Trunkcard
Table244
Environmental specifications
Parameter Specifications
Operating temperature 0 to 50 degrees C, ambient
Operating humidity 5 to 95% RH (non-condensing)
Storage temperature - 40 to + 70 degrees C
Release control
Release control establishes which end of a call (near, far, either,joint, or
originating) disconnects the call. Only incoming trunks in idle ground star t
configuration can provide disconnect supervision. You configure release
control for each trunk independently in the Route Data Block (LD 16).
Release control establishes which end of a call (near, far, either,joint, or
originating) disconnects the call. Only incoming trunks in idle ground star t
configuration can provide disconnect supervision. You configure release
control for each trunk independently in the Route Data Block (LD 16).
PAD switching
The transmission properties of each trunk are characterized by the
class-of-service (COS) you assign in the Trunk Data Block (LD 14).
Transmissionproper ties maybe via net loss (VNL) or non via net loss
(non-VNL).
Non-VNL trunks are assigned either a TransmissionCompensated (TRC) or
Non-TransmissionCompensated (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:
•TransmissionCompensated
— used for a two-wire non-VNL trunk facility with a loss of greater than
2 dB for which impedance compensation is provided
— or used for a four-wire non-VNL facility
•Non-TransmissionCompensated
— used for a two-wire non-VNL trunk facility with a loss of less than 2 dB
— or used when impedance compensation is not provided
The insertion loss from IPE ports to IPE ports is as follows:
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.