[asterisk-dev] IAX hardphone

Bill Shaw b.shaw at comcast.net
Thu Feb 10 14:42:06 CST 2011

On 2/10/2011 3:22 PM, Martin Harriss wrote:
> 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
>> - my hardphone - TI DSP running my code on the bare metal
>> Zoiper calls extension 21 which is mapped in the dial plan through to 
>> my hardphone.  Linux arps for my mac,  I reply with it.  * sends me a 
>> 'new',  I reply with an 'accept'.  There is no response to the 
>> 'accept'.  It just gets ignored and eventually * sends me another 
>> 'new'.  There's got to be something wrong with my 'accept' but I just 
>> can't see it.  Wireshark shows it as I expect.  No error messages,  
>> nothing in the messages log,  it just gets dropped.
>> Screen shot of the 'accept' in Wireshark:
>> http://b.shaw.home.comcast.net/accept.jpg
>> Can anyone see what I'm doing wrong?  Is the timestamp supposed to be 
>> my timestamp (ms offset from 'new') or the timestamp in the 'new'?
>> Thanks,
>> Bill
> This may be a silly question, but do you have any firewalling set up 
> on the PBX that might prevent the packets from getting to Asterisk?  
> (They would still be seen by wireshark.)
> Martin

Hmmm,  I didn't set up anything explicitly,  just a default CentOS and 
Asterisk install.  That wouldn't do any firewalling,  would it?

I uploaded the Wireshark capture file from a session if anyone's willing 
to look.




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