[asterisk-users] DAHDI FXO Call Issues / Indication Types

[Shaun Ruffell]

I'm not a chan_dahdi expert but I thought I would take a crack at
answering your questions...

On Thu, Apr 12, 2012 at 11:31:37AM -0500, Tim Nelson wrote:
> Greetings-
> 
> I've had reports of a customer PBX acting strangely to some
> inbound calls. Specifically, a call comes into an FXO port, hits a
> Dial() to ring a few extensions, but by the time someone answers
> the phone, the call has been dropped, and the caller is listening
> to on-hold music. There is nothing in the dialplan that would
> cause this behavior.
> 
> The logs have a couple of odd (to me, maybe normal) items that may
> give some information.
> 
> After the call comes in, and the SIP endpoints are dialed, I see:
> 
> [2012-04-12 08:51:04] DEBUG[7313] chan_dahdi.c: Requested indication 3 on channel DAHDI/1-1
>
> I have to assume indication 3 means playing ringing tones to DAHDI/1?

This is letting chan_dahdi know that the SIP phones are ringing.