AASTRA DT4x2 for BusinessPhone User Guide EN - Manual (Page 46)

Call Forwarding
BusinessPhone – Cordless DT412/DT422/DT432 46
Call Forwarding
When you are not available to take calls or decide to answer your
calls on another extension, it is useful to forward your calls to an
alternate answering position.
If you urgently need to talk to someone who has forwarded his
calls, the system is also equipped with a bypass function, see
section “ Diverted extension ” on page 33.
Depending on the type of Diversion you are also able to record your
Personal Greeting, see section “ Personal Greeting ” on page 58.
Note: You can still make calls as usual.
Diversion when caller receives busy tone
If your extension is busy and you receive an incoming call (internal
or external), your system administrator can program your extension
to automatically divert the call to a programmed Diversion address.
Diversion when there is no answer
If you are not available to answer incoming calls (internal or
external), your system administrator can program your extension to
automatically divert calls to a programmed Diversion address
(default time: 15 seconds).