Philips D721 - Manual (Page 28)

Initial state: camp-on busy during a call
Steps:
No. Description Input Display
3.3.2 Automatic callback on busy
The ISDN connection of a party you have called is busy. However, you want
to urgently speak to this person. In this case, you activate the "Automatic
callback on busy" function by pressing the redial key (
w
) after receiving
the busy tone (pay attention to the acknowledgement tone) and by then
hanging up. As soon as the busy connection is free again, the callback is
signalled to you. When you lift your handset or press the loudspeaker key,
the person who has now become free is called automatically.
Initiated calls back are placed in a callback list by the exchange. If a call-
back is not possible within 45 minutes, the corresponding entry in the call-
back list is deleted automatically.
Note: "Callback on busy" may fail under the following conditions (negative
acknowledgement note):
123456
-· PRIVAT
Е‹ З ¤‰ ÏÌÓÛı
s t
Reject the camp-on
busy call or
0431881810
-· PRIVAT
Е‹ З ¤‰ ÏÌÓÛı
B A
End the first connec-
tion, in which case the
camp-on busy call is
signalled like a normal
call and is accepted
by lifting the handset or
04318818010
-· PRIVAT
Е‹ З ¤‰ ÏÌÓÛı
t
End the first con-
nection and accept
the other call or
04318818010
-· PRIVAT
Е‹ З ¤‰ ПМУ Ы
R
Place the first con-
nection on hold and
accept the other call 1
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