Nortel Networks NN43001-106 - Manual (Page 144)

144 AC15 Recall: Transfer from Norstar
on the analysis of the received digits. Subsequent recall signals are used
by Party Z to toggle between Party X (the original party) and Party Y (the
desired party).
During the three-party phase, if the active party (X or Y) disconnects,
dialtone is provided to Norstar. If the held party (X or Y) disconnects, the
active call is unaffected. In both cases, the AC15 trunk is not disconnected.
When Party Z goes on-hook, a release signal is received, the transfer
is completed, and the AC15 trunk is released. If the transfer cannot be
completed due to access restrictions, the Access Denied (ACCD in LD
15) intercept treatment is provided to the held party and the active party is
disconnected. If the transfer cannot be completed because the active call is
not in a ringing or established state, the active call is abandoned and the
held party recalls the attendant. During the three-party phase, only one
trunk is used. Without this feature, however, two AC15 trunks are needed.
Operating parameters
There is no signaling capability to inform Norstar that the second called
party (Party Y) has answered. Similarly, there is no signaling capability to
inform Norstar that there has been a release of any call by Party X or Party
Y on the line.
This feature enables the system to process a recall signal received on the
AC15 trunk. It does not enable the system to send such a signal.
The AC15 trunk must be configured with digitone Class of Service and
answer supervision.
Currently, only Norstar key systems are supported on the far end.
When dialtone is provided by the system, the digits are dialed according to
the system’s numbering plan, not that of the Norstar.
This feature requires the XFEM trunk card (NT5K19AC) or later. It is only
applicable to the UK market.
Whenever a recall signal from Norstar is not allowed by the system (for
example, impossible to put a call on hold, conference, or transfer chaining
prevention), the signal is ignored.
Feature interactions
This feature introduces a new concept: a trunk can now put a call on hold
and perform a transfer. Wherever possible, treatment is kept consistent with
that of an analog (500/2500 type) telephone performing the same actions.
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
.