[asterisk-dev] IAX hardphone

Jeff LaCoursiere jeff at sunfone.com
Mon Feb 14 14:41:40 CST 2011

On Mon, 14 Feb 2011, Bill Shaw wrote:

>>> OK. First, my setup...
>>> - my development system - Win xp - Wireshark, Zoiper, TI's
>>> Code Composer Studio
>>> - My PBX - CentOS 5.5, Asterisk 1.6.2 (?)
>>> - my hardphone - TI DSP running my code on the bare metal
> Wireshark capture - http://b.shaw.home.comcast.net/accept.pcap

Hi Bill,

I won't pretend to know the inner workings of the IAX protocol, but 
comparing your "ACCEPT" in frame 12 with the "ACCEPT" sent by asterisk to 
Zoiper in frame 6 I see that asterisk's accept has an extra eleven bytes 
that at least my copy of wireshark (1.2.11) can't decode.

Just as a suggestion for further debugging, perhaps setup another Zoiper 
to call to, and examine the packet trace for a functioning IAX call, and 
see if that will enlighten.



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