[Asterisk-Users] Re: DTMF not sending properly via IAX

[Tony Mountifield]

In article <9e7e0d8a0507120544191f78ea at mail.gmail.com>,
Mark Edwards <mark.p.edwards at gmail.com> wrote:
> 
> I'd be interested to understand where you read about the 'sequence numbers' 
> issue. 
> This sounds like it might relate to the problem I am experiencing.
>  It's either that, or the DTMF is coming inband over the IAX channel...
>  ;-)

Well you could try doing a tcpdump to capture the incoming and outgoing
packets on the IAX port. Use the -w option with -s0, to write the whole
of each packet to the packet file.

You could then use a recent version of Ethereal to read the packet file
and analyse it. Apparently, recent versions of Ethereal understand IAX.
Ethereal is able to save RTP audio streams as audio files - it might be
able to do the same with IAX audio streams, but I don't know.

It was probably on the asterisk-dev list where I read about sequence
number issues, but I can't remember how long ago. I'm not even sure
whether it was IAX or SIP. I've just looked through the cvs log of
chan_iax2.c and chan_sip.c, but didn't find anything that appeared
relevant.

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org