[asterisk-users] Sequential Ring Groups?

[Marshall Henderson]

Hi fellow Asterisk users!

I've got a PRI being used with a bunch of iaxmodems/Hylafax. I
currently have each individual channel of the PRI in its own context
that rings a specific iaxmodem. However, when a fax is complete on
that modem and another call comes into it, the modem is still in a
state of 'settling down' from the last call and I'd like to have it
ring a different channel if possible. So essentially, instead of each
PRI channel with a different context, I'd like to see one context that
simply handles calls to any available IAX peer (iaxmodem). How is this
done? I can certainly use the Dial() app to ring a bunch of extensions
at once but I'd like to have it try the first modem, if busy, then the
second, etc until one is available and answers.

I'm not using FreePBX for this fax server but am using it on my voice
PBX. Looking at the code for the 'firstavailable' ring group strategy
is of no help since its clouded within a whole mess of other functions
within [macro-dial]. Any ideas or pointers? THANKS!

--Marshall