[Asterisk-Users] If one extension is busy...

[Robert Hajime Lanning]

<quote who="Jim Sneeringer">
> How can I program it to go directly to voicemail if her primary line is
> busy?
>
> I could start out by testing to see if the line is busy using GotoIf, if I
> knew how to test for busy.  Alternately, I could ring her primary line for 1
> second and go to voicemail if it is busy.  Then I could ring both lines
> together for a longer period of time.  However, I'm afraid it might not work
> if she picked up just as the one second was up.
>

ChanIsAvail()

You must make sure CallWaiting is turned off.

I have a few twoline phones on a channelbank.  I turned off CallWaiting, then
I test the primary and secondary lines and ring the first one available.

You send ChanIsAvail() a list of channels.  It will iterate down the list and
return the first one available.  There is a side effect, it returns in
$AVAILCHAN the channel that succeded in makeing a call, but it also has the
channel's session ID tagged on.  If you are going to use the value of AVAILCHAN,
you need to strip the session ID off.  I have an AGI perl script to do this with
ZAP and SIP channels, but currently does not work with IAX channels.  (The
session ID delimiter is different.)

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       -MCP