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Callback (Knocking)
The subscriber you want to reach is telephoning
or does not answer. To avoid having to call back
again and again, you can activate a callback. You
then get a callback as soon as he hangs up or
ends a call. Your phone rings. You just have to Lift
handset and the subscriber is called
automatically.
h
z
Lift
Dial the
handset
subscriber
t
ª
or
Subscriber answers,
Subscriber does not answer, replace handset.
hold conversation
This activates the callback
Notes
Callback - you can activate several callbacks one
after another (from any internal subscriber).
You cannot activate a callback from an internal
subscriber
- from which another subscriber is already ex-
pecting a callback
- who has switched on do not disturb on his tel-
ephone
- whose connection is set to the terminal type an-
swering machine, fax, modem or combi-device.
Callback from an internal subscriber:
- The callback is disconnected after 60 seconds
if you do not answer.
- A callback is cancelled if the callback was not
connected.
General callback:
You have activated a callback:
- If the do not disturb feature is switched on on
your phone, it will be temporarily deactivated.
- If a call diversion is set up on your phone, the
callback is not diverted.
In the event of a power failure: Callbacks are can-
celled.
You cannot use the "Callback" features on a
combi-device (phone/fax).
q
r
Busy or ringing
Refer back
tone
Operation
Callback on busy from an external subscriber is
Callback on busy
Callback on busy
Callback on busy
Callback on busy
only possible if your network provider supports
the ISDN feature.
You will receive an automatic callback as soon as
the subscriber is free.
* R U E q p
Internal callback /
Callback on busy
Callback on busy
- No callback from the desired subscriber is pos-
sible when you hear the error tone. The ISDN
feature "Callback on busy" is not available in
the exchanges for example.
- If you are unavailable for callback, the callback
is disconnected after 20 seconds and cancelled.
Repeat the callback if necessary.
- A callback is cancelled when the callback has
been connected or is not connected within 45
minutes.
Acknowledgement
O
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