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90
VoIP subscriber gateways
5
ADDED SERVICE USAGE
5.1
Call transfer
Access to the ‘
Call transfer
’ service is established via subscriber port settings menu – ‘
Ports conf.
’
-by
selecting
‘
Attended calltransfer
’
value or
‘
Unattended calltransfer
’
in the ‘
Flash transfer
’
field.
'Attended calltransfer'
service allows you to temporarily disconnect an online subscriber (Subscriber A),
establish connection with another subscriber (Subscriber C) and return to the previous connection without
dialling or transfer the call while disconnecting Subscriber B.
‘
Attended calltransfer
’
service usage
:
While being in a call state with the subscriber A, put him on hold with short clearback flash (R), wait for
station response signal and dial subscriber C number. When Subscriber C answers, the following operations will
be possible:
R 0 – disconnect a subscriber on hold, connect to online subscriber;
R 1 – disconnect an online subscriber, connect to subscriber on hold;
R 2 – switch to another subscriber (change a subscriber);
R 3 – 3-Way Call;
R clearback – call transfer; voice connection will be established between Subscribers B and C.
Figure below shows
'Attended calltransfer'
service operation algorithm: