asterisk-users-boun...@lists.digium.com wrote on 01/04/2016 08:55:40 AM:
> My question:
>
> - two extensions: 1111 and 2222
> - an active call on 1111
> - incoming calls to 1111 should be forwarded to 1111 (call advice!) and
2222
>
> I know how can I forward an incoming call to more than an extension,
> but I have no idea how can I get the information, that 1111 has
> already an active call...
>
I am not sure if I completely understand what you are trying to do, but it
sounds like you want to query the DEVICE_STATE function.
For instance, my customer service department has this thing against ever
having their phone ring a call while they are already on a call, so for
these special little snowflakes, I have the following line:
same => n(voice),GotoIf($["${DEVICE_STATE(sip/${EXTEN})}" !=
"NOT_INUSE"]?voicebusy)
Basically, this little line looks at the extension and if it shows
anything other than free (NOT_INUSE), it jumps to the voicebusy line in
the dialplan. The voicebusy line just hits voicemail directly.
You can use this same idea to branch your logic and handle a variety of
situations. In my case, I only want to actually perform the dial if the
phone is currently not in use, so my logic was fairly simple.
See here for reference:
https://wiki.asterisk.org/wiki/display/AST/Device+State
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