Screen Reference
Trunk Group
Administrator’s Guide for Avaya Communication Manager
1261
November 2003
Comm Type
Use this field to define whether the trunk group carries voice, data, or both.
NOTE:
Comm Types of avd, rbavd and data require trunk member ports on a DS1 circuit pack.
COR
Tip:
Remember that facility restriction levels (FRL) are assigned to classes of restriction. Even
if 2 trunk groups have classes of restriction that allow a connection, different facility
restriction levels may prevent operations such as off-net call forwarding or outgoing calls
by remote access users.
Valid
entries
Usage
avd
Enter avd for applications that mix voice and Digital Communication Protocol data,
such as video conferencing applications. The receiving end media server or switch
discriminates voice calls from data calls and directs each to an appropriate endpoint.
Neither originating nor terminating ends insert a modem poll for any calls when
Comm
Type
is avd.
The
Signaling Mode
field on the DS1 Circuit Pack screen must be set for either
common-chan or CAS signaling.
data
Enter data only when all calls across the trunk group originate and terminate at Avaya
Communication Manager digital data endpoints. Public networks don’t support data:
supported by Avaya’s DCP protocol, this entry is used almost exclusively for the data
trunk group supporting DCS signaling channels.
The
Signaling Mode
field on the DS1 Circuit Pack screen may be set to robbed-bit or
common-chan.
rbavd
For digital trunk groups that carry voice and data with robbed-bit signaling.
The
Signaling Mode
field on the DS1 Circuit Pack screen must be set to robbed-bit
unless mixed mode signaling is allowed on the DS1 circuit pack. In that case, the
Signaling Mode
field may be isdn-ext or isdn-pri.
voice
For trunk groups that carry only voice traffic and voice-grade data (that is, data
transmitted by modem). Analog trunk groups must use voice.
Valid entries
Usage
0 to 95
Enter a class of restriction (COR). Classes of restriction control
access to trunk groups, including trunk-to-trunk transfers.