Nortel Networks Circuit Card 311 - Manual (Page 585)

Operation 585
The signaling and control portion of the Universal Trunk Card works with
the CPU to operate the card hardware. The card receives messages from
the CPU over a signaling channel in the DS-30X loop and returns status
information to the CPU over the same channel. The signaling and control
portion of the card provides the means for analog loop terminations to
establish, supervise, and take down call connections.
Signaling interface
All trunk signaling messages are three bytes long. The messages are
transmitted in channel zero of the DS-30X in A10 format.
Configuration information for the Universal Trunk card is downloaded from
the CPU at power-up or by command from maintenance programs. Eleven
configuration messages are sent. Three messages are sent to the card
to configure the make/break ratio and A-Law or µ-Law operation. One
message is sent to each unit to configure the trunk characteristics.
All trunk signaling messages are three bytes long. The messages are
transmitted in channel zero of the DS-30X in A10 format.
Configuration information for the Universal Trunk Card is downloaded from
the CPU at power-up or by command from maintenance programs. Eleven
configuration messages are sent. Three messages are sent to the card
to configure the make/break ratio and A-Law or µ-Law operation. One
message is sent to each unit to configure the trunk characteristics.
Operation
Administrators can assign optional applications, features, and signaling
arrangements for each unit on the NT8D14 Universal Trunk card through
the Trunk Administration LD 14 and Trunk Route Administration LD 16
programs or jumper strap settings on the card.
The optional applications, features, and signaling arrangements for each unit
on the universal trunk card are assigned through the Trunk Administration
LD 14 and Trunk Route Administration LD 16 programs and/or jumper strap
settings on the card.
See Software Input/Output Reference — Administration (NN43001-611) for
detailed information on assigning features and services to trunks.
Administrators can assign optional applications, features, and signaling
arrangements for each unit on the NT8D14 Universal Trunk Card through
the Trunk Administration LD 14 and Trunk Route Administration LD 16
programs or jumper strap settings on the card.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.