Avaya Communication Manager Administrator's Manual page 1513

Disable call classifier for CCRON over SIP Enablement Services (SES)
trunks
This field provides a customer the means of directing Communication Manager to dispense with
the call classifier on interworked calls and rely on the SIP Enablement Services (SES) trunk
signalling messages.
Valid entries
y
n
Ignore Network Answer Supervision
This field appears only if the Coverage of Calls Redirected Off-Net Enabled field on this
screen is y.
CCRON might use a call classifier port to determine whether an off-net coverage or forwarded
call has been answered, discarding other information that might indicate an answered state.
However, some customers pay the operating company to provide network answer supervision
on their trunks and desire that CCRON not discard that information. This service can be
preserved by setting this field to n.
On the other hand, beware when you tandem a call over a tie trunk through another media
server or switch node from where it redirects to the public network over non-ISDN facilities. If
the trunk on the far-end node sends a timed answer supervision, that might get tandemed back
to the originating node as a network answer. In such a scenario, the originating media server or
switch interprets the call as answered, leading to some undesirable behavior. To avoid these
calls from mistakenly be treated as answered, set this field to y. An unfortunate consequence is
that a short cut-through delay that is inherent to call classification is introduced when the call is
answered.
Valid entries
y
n
Usage
Use y to disable the call classifier for CCRON calls over interworked trunk
facilities.
Use n to enable the call classifier for CCRON calls over interworked trunk
facilities.
Usage
Ignore network answer supervision and rely on the call classifier to
determine when a call is answered.
Treat network answer supervision as a true answer.
System Parameters Call Coverage/Call Forwarding
Issue 2.1 May 2006 1513