Dear Michael, Thank you very much for your information regarding the RTP and RTCP packets.
Could you please tell me more about building hooks that expose the RTCP packets? Thanks Melanie >From: Mike Cohen <[EMAIL PROTECTED]> >To: [email protected], [EMAIL PROTECTED] >Subject: Re: Fwd: [sipxtapi-dev] sipXezPhone - Hook into Stream (RTP >packets) >Date: Tue, 05 Sep 2006 10:09:05 -0400 > >Melanie M. wrote: >><mailto:[email protected]> >>Dear Michael, >> >>Thank you for your information about hooking into stream. >> >>I am working on adding Quality of Service (QoS) into the sipXezPhone, to >>perform analysis of the jitter, delay and packet loss in the VoIP network. >I think Bob Andreasen is also working on adding QoS related features to >sipXtapi. I believe Bob is adding the ability to report RTCP statistics to >a call quality monitoring system such as Telchemy's VQmon product. >> >>I would appreciate your help on how to do the QoS, in particular I would >>like to know how to control and insert my own RTP packets. >There is not an easy way right now to inject RTP packets into the stream - >(at least I think there isn't an easy way to do this - if someone knows >how, let us know). It could probably be done though... >But, I'm a little curious why you would want to do this?? The sipXmediaLib >is already sending and receiving RTCP sender and receiver reports. >I think, that, if you'd like to do analysis of the jitter, delay and packet >loss, it would be more interesting to you to try to build hooks that expose >the RTCP packets. >If you haven't already, take a look at rfc1889, especially section 6.3, >which describes RTCP sender and receiver reports, and how to analyze them. >RTCP may actually be what you are looking for. > >-Michael > >> >>Thanks >>Melanie >> >> >> >> >From: "Michael Cohen" < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> >> >To: "'Melanie M.'" <[EMAIL PROTECTED] >><mailto:[EMAIL PROTECTED]>>,< [EMAIL PROTECTED] >><mailto:[EMAIL PROTECTED]>> >> >CC: <[email protected] >><mailto:[email protected]>> >> >Subject: RE: [sipX-dev] sipXezPhone - Hook into Stream >> >Date: Thu, 17 Aug 2006 09:42:39 -0400 >> > >> >Melanie, >> > >> >I don't believe there is currently a simple way to hook into the media >> >stream, however, I think it could be done. >> > >> >As a workaround, I would change NetInTask.cpp so that it contains a >> >reference to a callback function defined for the purpose of hooking into >> >the >> >media stream. >> > >> >Such a callback function could be invoked from NetInTask::get1Msg >>whenever >> >an RTP socket is read. >> > >> >This wouldn't really be a general purpose solution, but I think you >>could >> >get it to work. >> > >> >As for injecting into the RTP stream, there are several functions in >> >sipXtapi for sending out audio. (sipxCallPlayBufferStart). >> >Is this what you're looking to do, or do you want to control and insert >> >your >> >own outbound RTP packets? Just wondering what the use-case is. >> > >> > >> >Mike Cohen >> > >> >Principal Software Engineer >> > >> >Pingtel Corporation >> > >> > >> > >> >Work: 781.938.5306 x115 >> > >> >Cell: 781.724.9453 >> > >> > >> > > -----Original Message----- >> > > From: [EMAIL PROTECTED] >><mailto:[EMAIL PROTECTED]> [mailto:sipx-dev- >><mailto:sipx-dev-> >> > > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>] On >>Behalf Of Melanie M. >> > > Sent: Thursday, August 17, 2006 1:44 AM >> > > To: [EMAIL PROTECTED] >><mailto:[EMAIL PROTECTED]> >> > > Cc: [email protected] >><mailto:[email protected]> >> > > Subject: [sipX-dev] sipXezPhone - Hook into Stream >> > > >> > > Hi all, >> > > >> > > I am enquiring about the sipXezPhone; in particular about the >>extraction >> > > and >> > > injection into stream. >> > > >> > > I am working on the sipXezPhone and I would like to hook into the >> >stream. >> > > >> > > Could someone please tell me what do I need to do to: >> > > >> > > - hook into the stream >> > > - inject into the stream >> > > - capture the parts of the stream >> > > >> > > I am looking forward to receiving some information from you. >> > > >> > > Thank you for your help! >> > > >> > > Regards >> > > Melanie >> > > >> > > >> > > _______________________________________________ >> > > sipx-dev mailing list >> > > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >> > > List Archive: http://list.sipfoundry.org/archive/sipx-dev >> > > Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev >> > >> >> >>_______________________________________________ >>sipxtapi-dev mailing list >>[email protected] <mailto:[email protected]> >>List Archive: http://list.sipfoundry.org/archive/sipxtapi-dev/ >>------------------------------------------------------------------------ >> >>No virus found in this incoming message. >>Checked by AVG Free Edition. >>Version: 7.1.405 / Virus Database: 268.11.7/437 - Release Date: 9/4/2006 >> > _______________________________________________ sipxtapi-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipxtapi-dev/
