[SIP Beyond VoIP] Debugging DTMF for conference bridge app

[Jason Ostrom]

Saúl,

Thank you for advice.  I will verify how I am adding the observer.  I will also use the debugging trace parameters in order to troubleshoot this and resolve.

I will get back to the list to let you know what I find.  This should help resolve the problem.  

Thank you again,
Jason
On Dec 23, 2013, at 2:14 AM, Saúl Ibarra Corretgé <saul at ag-projects.com> wrote:

> Hi,
> 
> On Dec 21, 2013, at 7:09 PM, Jason Ostrom <jpo at pobox.com> wrote:
> 
>> I have done the following in order to have SIP Simple print out the DTMF, and it is still not working.
>> 
>> 1.  Ported code from sip-session sample sipclients for DTMF receiving into other python script.  The code is listening for notification from the audio stream just as sip-session does.
>> 
> 
> How did you add the observer?
> 
>> 2.  Verified that the DTMF is being received as RFC 2833 and it is broadcasted by Asterisk.  Ran a wireshark trace and all digits are being received on host running sip simple SDK apps.
>> 
>> Problem is SIP Simple code is not able to detect DTMF, or at least my implementation.
>> 
>> Question:  How do I get the "sip-session" sample application to receive DTMF and print out each DTMF digit to stdout?  Does it do this by default?  How do I debug / print each RTP packet, because DTMF in RTP Payload is not detected?  I am trying to troubleshoot it, if I can just get sip-session to print each DTMF digit that is broadcasted by another conference user, then I can get the 'sip-session' DTMF receiving code working in the other python script.  Both scripts are successfully dialing into conference.  Other conference user inputs DTMF, and I can see Asterisk broadcasting, but nothing on receiving scripts.  Please let me know if any ideas.
>> 
> 
> You can enable notifications trace (see sip-session -h) and all notifications will be either dumped to a file or printed to stdout. You should see if DTMF is detected notifications getting fired. If it isn't detected, then you'd need to dig deeper and enable the PJSIP logs.
> 
> 
> Regards,
> 
> --
> Saúl Ibarra Corretgé
> AG Projects
> 
> 
>