274 Call Transfer
Operating parameters
A separate Call Transfer key/lamp pair must be assigned to Meridian 1
proprietary telephones.
A transfer allowed Class of Service must be specified for analog (500/2500
type) telephones to access this feature.
If trunks are involved, successful completion of a transfer depends on the
access limitations assigned to the stations and trunks.
While the originating side of a call is linked to a transfer or conference key
(that is, the originator of a transfer/conference call has not yet completed
the transfer/conference), the terminating side cannot initiate a transfer or
conference. Conference calls cannot be transferred.
Feature interactions
Advice of Charge for EuroISDN
When a set is connected to an ISDN CO trunk conveying AOC charging
information, the received call charging information is stored against this set.
If the user transfers the call while the dialed set is still ringing, call charging
information is stored against the transferring set until the call is either
answered or abandoned by the external party. If the user consults with the
dialed transfer set, charging information is stored against the transferring
set until the call is either answered or abandoned. If the transferred call
is redirected by a call redirection feature, the call is charged against the
transferring set until the call transfer is completed and the call is answered.
In all instances, if the call is answered, new call charging information is
stored against the set receiving the transferred call.
AC15 Recall: Transfer from Norstar
A party involved in a consultation call (an active or held party) cannot initiate
a consultation call for preventing call chaining. This principle is maintained
in the following cases:
•the party is an AC15 trunk (if it attempts to initiate a consultation call,
the recall signal is ignored), and
•the party is a local set, but the consultation call is made by an AC15
trunk.
Attendant Break-In
Until a transferred call is connected, the attendant cannot break in to a
call that is being transferred.
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Copyright © 1994–2008, Nortel Networks
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