Nortel Networks NN43001-106 - Manual (Page 435)

Feature interactions 435
Network Ring Again features do not interfere with the ARDL feature. ARDL
is only activated after all Network Ring Again attempts have failed. When
ARDL is activated, redial attempts continue with the ARDL feature. ARDL
does not support the failure of a DPNSS1 call attempt.
The ARDL feature does not impact the operation of the Ring Again feature
on internal calls.
The tone detector is not allocated to detect non-busy tones for off network
trunks that have on-board busy tone detectors such as an Extended Flexible
Central Office Trunk (XFCOT). Only a busy tone is detected. Accordingly,
an Automatic Redial call is considered a successful call even though an
overflow tone is sent from the far end.
With the exception of trunks that have on-board busy detectors or an
end-to-end Integrated Services Digital Network (ISDN) call, a tone detector
is required for all ARDL calls.
If a trunk is not equipped with answer supervision, an ARDL call is redialed
once only and then the redial request is cancelled.
The busy tone detector capability is limited to the current tone detector
hardware.
This feature introduces the following three timers that control the operation
of ARDL:
• The Automatic Redial Acceptance Timer is the maximum allotted time
that the calling party has to respond to an ARDL call.
• The Automatic Redial Retry Timer controls the time between successive
ARDL retries.
• The Tone Detector Response Timer controls the tone detector response
and is defined in LD 16.
Feature interactions
Access Restrictions
Trunk Group Access Restrictions
The Access Restriction/Trunk Group Access Restrictions of an ARDL
redialed call are those restrictions that were applied when the call was
initiated. These initial restrictions are not changed.
Attendant Barge-In
Attendant Barge In is not allowed to a trunk that is currently used for the
ARDL call redialing. This is done to avoid creating a conference when the
tone detector is involved.
Nortel Communication Server 1000
Features and Services - Book 1 of 6 (A to B)
NN43001-106 01.04 Standard
Release 5.0 27 July 2007
Copyright © 2007, Nortel Networks
.