[asterisk-dev] IAX hardphone

[Bill Shaw]

On 2/14/2011 3:41 PM, Jeff LaCoursiere wrote:
>
> On Mon, 14 Feb 2011, Bill Shaw wrote:
>
>>
>>>> OK. First, my setup...
>>>>
>>>> 192.168.1.56 - my development system - Win xp - Wireshark, Zoiper, 
>>>> TI's
>>>> Code Composer Studio
>>>> 192.168.1.4 - My PBX - CentOS 5.5, Asterisk 1.6.2 (?)
>>>> 192.168.1.31 - 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.

Yes,  that would be one of the undocumented IEs I was asking about 
previously.  IAX_IE_FORMAT2 - I'd have to reverse engineer the code to 
see what it does.  For now I'm just ignoring it.

>
> 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.
>
That's a good thought.  I'll give it a go.

Thanks,  Bill

> Cheers,
>
> j
>
>