Great!!..I basically want to perform Call Progress Analysis(CPA) for outbound calls which would also include detection of the type of remote endpoint(FAX,answering machine,or a Human voice) answering the call. Although in RFC 2833 there were many event codes defined for the E.182 line events an others helping this cause,they seem to have been deprecated in RFC 4733 except for DTMF codes.I ran a few tests trying to make calls to fax & answering machines after changing the SDP as below trying to see if any of such rfc 2833 codes are obtained,but couldn't find any success. a=rtpmap:96 telephone-event/8000 a=fmtp:96 0-200 So i was wondering if such events are sent in RFC "tone" fomat or as inband.Looks like I'll have to probably detect the tones inband using the SpanDsp library. I'll also be interested to know if any 1 has tried CPA using Pjmedia successfully. Thanks, Sandeep On Tue, Sep 20, 2011 at 3:23 AM, Omar Hussein <omarh2812 at gmail.com> wrote: > Hi Sandeep > > I had no problems with dtmf detection using spandsp. CPU utilization was a > little higher (can't remember by how however). I could turn detection on or > off as required but in some situations I needed detection throughout the > entire call so I ended up using rfc2833 event since the carrier supported > it. > > Regards > Omar > > On 20/09/2011, at 12:16 AM, Sandeep Karanth <sandeepk.kdp at gmail.com> > wrote: > > Hi Omar , > Thanks for the reply.Am aware that PjMedia doesn't support > inband tone detection currently.I am referring to the out of band tones,sent > using RFC 2833 "audio/tone" payload,the 2nd payload format specified in RFC > 2833,the first one being the named "telephony-event" type. Btw how good is > the detection with spandsp?? > > On Mon, Sep 19, 2011 at 7:17 PM, Omar Hussein < <omarh2812 at gmail.com> > omarh2812 at gmail.com> wrote: > >> Are the tones inband? If so the FAQ gives suggestion on how to detect them >> by creating a pjmedia_port. I used this method with spandsp library for the >> tone detection. >> >> >> >> On 16/09/2011, at 9:31 PM, Sandeep Karanth < <sandeepk.kdp at gmail.com> >> sandeepk.kdp at gmail.com> wrote: >> >> Hi all, >> Does PJMEDIA support detection of DTMF and other telephony tones >> mentioned in RFC 2833 if they are sent in "tone" payload format rather than >> the "event" type? >> >> Regards, >> Sandeep >> >> _______________________________________________ >> Visit our blog: <http://blog.pjsip.org> <http://blog.pjsip.org> >> http://blog.pjsip.org >> >> pjsip mailing list >> <pjsip at lists.pjsip.org>pjsip at lists.pjsip.org >> <http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org> >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> >> >> _______________________________________________ >> Visit our blog: <http://blog.pjsip.org>http://blog.pjsip.org >> >> pjsip mailing list >> <pjsip at lists.pjsip.org>pjsip at lists.pjsip.org >> <http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org> >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> >> > > > -- > Regards, > Sandeep Karanth > > _______________________________________________ > Visit our blog: <http://blog.pjsip.org>http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > -- Regards, Sandeep Karanth -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110920/ed8d45d4/attachment.html>
