Avaya Communication Manager Administrator's Manual page 463

Helpful tips for setting common fields
The procedures in this section cover the specific fields you must administer when you create
each type of trunk group. Here are some tips for working with common fields that are available
for most trunk groups.
Dial Access — Typing y in this field allows users to route calls through an outgoing or
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two-way trunk group by dialing its trunk access code.
!
SECURITY ALERT:
Calls dialed with a trunk access code over Wide Area Telecommunications
SECURITY ALERT:
Service (WATS) trunks are not validated against the ARS Digit Analysis Table, so
users can dial anything they wish. For security, you might want to leave the field
set to n unless you need dial access to test the trunk group.
Outgoing Display — Typing y in this field allows display telephones to show the name
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and group number of the trunk group used for an outgoing call. This information might be
useful to you when you're trying to diagnose trunking problems.
Queue Length — Don't create a queue for two-way loop-start trunks, or you might have a
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problem with glare (the interference that happens when a two-way trunk is seized
simultaneously at both ends).
Trunk Type — Use ground-start signaling for two-way trunks whenever possible:
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ground-start signaling avoids glare and provides answer supervision from the far end. Try
to use loop-start signaling only for one-way trunks.
Related topics
See the Hardware Description and Reference for Avaya Communication Manager,
555-245-207, for information on the types of circuit packs available and their capacities.
See your server's Installation manual for circuit-pack installation instructions.
See Modifying Call Routing on page 304 for detailed information on Automatic Route Selection.
Tips for Working with Trunk Groups
Issue 2.1 May 2006 463