[Asterisk-Dev] Distinctive ring inbound on FXO

[William Waites]

I am trying to implement the detection of distinctive ring on the
an FXO interface. This can be used, clearly, to redirect the call
to a different place based on the called number. Since the called
number is not available now, I propose to add some new onfiguration
variables to zapata.conf, namely did1, did2 and did3 to statically
configure them. Then, in chan_zap.c, fill in the extension in 
chan->exten before control is passed to ast_pbx_run().

The question is, how to determine if a distinctive ring has been
recieved, and how to determine *which* distinctive ring if there
are more than one configured?

To begin with, I will try to make it work with only two numbers
(my POTS line has only two numbers anyway, so it's sufficient
for me right now), and kludge it in around line 4379 where the
fix to make Caller ID work with distinctive ring is, but
something tells me this is not the right way to do it.

Any advice from someone who knows about dealing with zaptel
hardware on this level?

Thanks,
-w