Avaya Communication Manager Administrator's Manual page 1539

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An Interface ID must be assigned to each T1/E1 facility in an NFAS Signaling Group. For
example, if the B-channels in a Signaling Group span 3 T1/E1 facilities, a unique Interface ID
must be assigned to each of the 3 facilities. This designation is required to uniquely identify the
same B-channel (port) number on each of the T1/E1 facilities in the Signaling Group. Therefore,
this interface must be agreed upon by both sides of the interface and administered prior to
initialization.
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Primary and Secondary D-Channel Backup must be agreed upon by both sides of the interface
and administered prior to initialization. If the IDs do not match, the signaling group will come up
but calls will fail.
The following screens show the DS1 interface configuration for NFAS. When implementing FAS and
NFAS, the DS1 screen must be submitted first, followed by the Interface Link and associated forms,
followed by the ISDN-PRI trunk group, Signaling Group, and Trunk Group Members screens.
The Interface Link and associated screens may be administered at any time after the DS1 screens have
been administered, with the following restrictions:
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A D-channel cannot be assigned on a Signaling Group screen unless the associated link is
disabled.
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A trunk member cannot be assigned unless its associated Signaling Group has been administered.
The
Signaling Mode
Signaling Mode
robbed-bit signaling or a D-channel on another DS1 circuit pack.
Figure 387: DS1 Circuit Pack screen
Signaling Mode: isdn-ext
Interface Companding: 5law
MAINTENANCE PARAMETERS
Slip Detection? n
Next, Signaling Groups are administered using Signaling Group screens.
Administrator's Guide for Avaya Communication Manager
November 2003
field must be specified for each DS1 circuit pack. Because this circuit pack has the
field set to isdn-ext, all trunks on this circuit pack are signaled using either inband
DS1 CIRCUIT PACK
Location: 1B17
Bit Rate: 2.048
Idle Code: 11111111
Facility and Non-Facility Associated Signaling
Name: _______________
Line Coding: hdb3
Remote Loop-Around Test? n
Feature Reference
1539