Hi,

I know that there are some end-devices that support CCBS (call completion
on busy subscriber). E.g. we used it some time ago with snom phones. If I’m
not wrong the feature is implemented on phone side with some kind of
event-package (Subscribe/notify etc.). This seems complex to me and also
has some implications on using voicemail. Also it is not available if you
use some phone types that does not support CCBS (e.g. mix of wired and
wireless devices).



Is there a way to do this server-sided? I think of this scenario:



-          Alice is talking to Bob.

-          Carol is trying to call Alice and becomes transferred to Alice’s
Voicemail. The Voicemail System also prompts: “…Press X if you wish to be
called back”

-          SipX notes the end of the call between Alice and Bob and just
triggers Alice’s phone to call Carol (REST request?).



This implementation would fulfill the wish for CCBS even with devices that
in fact does not support this feature.





Regards



Jan



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