[Serusers] ATA support for RTCP

-----Original Message----- From: Maxim Sobolev [mailto:sobomax@portaone.com] Sent: Wednesday, December 10, 2003 5:56 PM To: Ricardo Villa Cc: Klaus Darilion; Jan Janak; Adrian Georgescu; serusers(a)lists.iptel.org Subject: Re: [Serusers] Re: Xten-RTPProxy choppy audio Ok, I see, probably it tries to send a RTCP packet, which is OK by itself, but handles resulting ICMP in a strange way. I'll extend RTP proxy to make it relaying RTCP traffic as well (I am having it on a TODO list for a quite some time now), which should fix this problem. Thank you for the debugging! In the meantime, disabling RTCP in X-Ten should solve the problem. -Maxim Ricardo Villa wrote: > I can confirm this too. Just tried it in our lab with the exact same > results as Klaus. (Instead of Budgetone I used ATA186). > > X-Lite build 1084 > > 1. ATA186 Calls Xten. > 2. Xten hears choppy audio every 5 seconds or so. > 3. RTP Stream from ATA to Xten is perfect and conserves the same SSRC > 4. RTP Stream from Xten to ATA switches to a new SSRC every few seconds. > It is clear to me that there is a bug in Xten software. Before > Xten > switches to a new SSRC it attempts to send an RTP packet to the wrong RTP > Port (it tries to the actual port +1). SER server sends back "ICMP Port > Unreacheable (Obviously)" and Xten restarts RTP Stream on a new SSRC. > I did not see any problem with Maxims RTPProxy. > > Regards, > Ricardo > > ----- Original Message ----- > From: "Klaus Darilion" &lt;darilion(a)ict.tuwien.ac.at&gt; > To: "Jan Janak" &lt;janak(a)fokus.fraunhofer.de&gt;de>; "Adrian Georgescu" > &lt;ag(a)ag-projects.com&gt; > Cc: &lt;serusers(a)lists.iptel.org&gt;rg>; "Ricardo Villa" &lt;ricvil(a)epm.net.co&gt; > Sent: Wednesday, December 10, 2003 11:07 AM > Subject: RE: [Serusers] Re: Xten-RTPProxy choppy audio > > > I can reproduce the choppy audio > setup: > budgetone-100 <----> ser+rtpproxy(version from today) on redhat 9 (or 8, > not sure) <------>x-lite build 1088 on win xp > > the choppy sound occours every 5 seconds, in both directions. > RTP-analysis: > RTP stream from budgetone to x-lite (via rtpproxy) is fine (no jitter, > no loss) > RTP stream from x-lite to budgetone (via rtpproxy): very strange: x-lite > switches to a new SSRC (and seq-nr. start at 0 again) every 5 seconds. > so, in my opinion: rtpproxy works fine, x-lite is guilty. but why does > this happen only if the rtp proxy is involved? ...further investigations > are planned... > > Klaus > > > >> -----Original Message----- >> From: Jan Janak [mailto:janak@fokus.fraunhofer.de] >> Sent: Wednesday, December 10, 2003 4:09 PM >> To: Adrian Georgescu >> Cc: serusers(a)lists.iptel.org; Ricardo Villa >> Subject: Re: [Serusers] Re: Xten-RTPProxy choppy audio >> >> >> Well, we can generate the traces locally, but I haven't encounter the >> problem you describe so it makes no sense. >> >> You wrote you are able to reproduce the problem, in that case I would >> like to ask you to generate the traces that show the problem >> so we could >> analyze and fix it. >> >> Also please tell us on what OS does this happen ? (I mean the >> OS the proxy >> is running on). >> >> Another question, what is the license of your RTP proxy ? I >> didn't find >> any licensing info in the sources. Will the sources be available ? >> >> Jan. >> >> On 10-12 16:04, Adrian Georgescu wrote: >> >> >>> On Wednesday, Dec 10, 2003, at 15:48 Europe/Amsterdam, >> >> Ricardo Villa >> >> >>> wrote: >>> >>> >>> >>>> Adrian, >>>> >>>> Do you have an Etheral trace trace of such a call (using G711)? >>> >>> I guess ethereal traces can be generated with ethereal program >>> and >>> decoded locally on your servers if you want to isolate this. >>> >>> >>> >>>> I can >>>> decode it and produce an audio file for all to examine. >> >> This way we >> >> >>>> can get >>>> to the bottom of this. >>>> Thanks, >>>> Ricardo >>> >>> _______________________________________________ >>> Serusers mailing list >>> serusers(a)lists.iptel.org >>> http://lists.iptel.org/mailman/listinfo/serusers >> >> _______________________________________________ >> Serusers mailing list >> serusers(a)lists.iptel.org >> http://lists.iptel.org/mailman/listinfo/serusers >> >> > > > > > > _______________________________________________ > Serusers mailing list > serusers(a)lists.iptel.org > http://lists.iptel.org/mailman/listinfo/serusers > > >