[Serusers] Re: Xten-RTPProxy choppy audio

[Adrian Georgescu]

Interesting, did you try my media proxy before saying this?

Regards,
Adrian


On Wednesday, Dec 10, 2003, at 17:40 Europe/Amsterdam, 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" <darilion at ict.tuwien.ac.at>
> To: "Jan Janak" <janak at fokus.fraunhofer.de>; "Adrian Georgescu"
> <ag at ag-projects.com>
> Cc: <serusers at lists.iptel.org>; "Ricardo Villa" <ricvil at epm.net.co>
> 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 at fokus.fraunhofer.de]
>> Sent: Wednesday, December 10, 2003 4:09 PM
>> To: Adrian Georgescu
>> Cc: serusers at 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
>>>
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>
>
>
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