[asterisk-dev] IAX hardphone
b.shaw at comcast.net
Mon Feb 14 14:51:19 CST 2011
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,
>>>> 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.
More information about the asterisk-dev