When you receive a busy tone, When you receive a, Busy tone – AASTRA 4425 IP Vision (SIP) for MX-ONE User Guide User Manual
Page 42: Ection, When you, Receive a busy tone
43
Dialog 4425 IP Vision
Outgoing Calls
When you receive a busy tone
If you call an extension and receive a busy tone, or get no answer,
or all external lines are busy, you can use any of the following
methods:
Callback
If a called extension is busy or there is no answer:
Ô
Callback
Press
or
6
press.
It can take several seconds before the procedure is executed.
A confirmation tone is heard.
Note: You can also press:
CallBack
(see display).
d
Replace the handset to finish the procedure.
You are called back (recall ring signal) when the ongoing call is finished
or the next time a new call is finished. You have to answer within eight
seconds, otherwise the Callback service is cancelled. While waiting for
the Callback, you can make and receive calls as usual.
u
Lift the handset when you are called back.
The system calls the extension.
Note: Callbacks can be activated on several extensions at
the same time.
If all external lines are busy (after dialing the digit or digits to get a
line):
Ô
Callback
Press,
or
6
press.
Note: You can also press:
CallBack
(see display).
z #
Dial the external number and press.
Call
Press.