[Serusers] Re: Xten-RTPProxy choppy audio

Wed Dec 10 15:57:08 CET 2003

I am afraid it will not be sufficient, as it will not show exactly which 
part of the system fails. The only way to get to the bottom of this is 
to say "take version V1 of software S1, V2 of S2 etc, take this config" 
and do the following to reproduce the problem (eg. S1 == rtpproxy, S2 == 
X-Lite etc). If the problem reproducible that way then it should be 
fairly easy to hunt it down, if not, then it is not a problem with the 
software, but rather with some other part of the system.

-Maxim

Ricardo Villa wrote:

> Adrian,
> 
> Do you have an Etheral trace trace of such a call (using G711)?  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
> 
> ----- Original Message ----- 
> From: "Adrian Georgescu" <ag at ag-projects.com>
> To: "Maxim Sobolev" <sobomax at portaone.com>
> Cc: <serusers at lists.iptel.org>
> Sent: Wednesday, December 10, 2003 9:15 AM
> Subject: [Serusers] Re: Xten-RTPProxy choppy audio
> 
> 
> 
>>On Wednesday, Dec 10, 2003, at 14:16 Europe/Amsterdam, Maxim Sobolev
>>wrote:
>>
>>
>>>Probably you need to replace "we have solved" with "we don't observe",
>>>because to say that something is "solved" you probably should be able
>>>to describe what the solution is.
>>
>>20+ of my customers have experienced a problem in the interaction
>>between xten soft clients and the rtp media proxy. I have reported this
>>to Maxim (3 november),  to xten (6 november) and ser user list  (6
>>november).  I have received no answer, hence the effort we put in
>>finding a solution ourselves.
>>
>>Maxim, I have all respect for all you work.  For the sake of this, here
>>is my correction:
>>
>>"We don't observe this with our media proxy"
>>
>>
>>>Personally I am not convinced that there is actually a real problem
>>>with our RTP proxy (my own tests and Jan's information confirms that),
>>
>>Personally, I am totally convinced that I had a problem and I am am
>>perfectly convinced that I solved my problem. I think this is the
>>single point of arguing here.
>>
>>
>>>it could be just equially likely be the problem with your setup (OS
>>>you are using, libraries, network etc).
>>
>>It is not isolated to my setup. Before I have notified Maxim, Xten and
>>SER user list,  I have reproduced the problem on different operations
>>systems (Windows and MacOSX), different Xten versions, different
>>firewalls (NET Gear, D-Link, Alcatel Speetouch and Linux masquerading)
>>different IP networks and different sip server software.
>>
>>
>>>Therefore, I strongly suggest you to stop asserting that your version
>>>is better
>>
>>I wrote "alternative" version with different features. Nothing about
>>"better". Your software is better :-)
>>
>>
>>>in this respect than original one unless you are able to tell where
>>>the difference is or to provide instructions on how to reliably
>>>reproduce the problem.
>>
>>To reproduce this I start up Xten and make a call via the proxy.
>>
>>
>>>Thanks!
>>
>>Welcome.
>>
>>
>>>-Maxim
>>>
>>>Adrian Georgescu wrote:
>>>
>>>
>>>>The problem is that every few seconds there is a gap of half second
>>>>in  the audio stream (quality-wise the conversation is unacceptable)
>>>>when  using Xten softphone X-lite or X-PRO on either Win or Mac via
>>>>RTPProxy.  I can consistently reproduce this problem 100% on various
>>>>systems and  so do all my customers.
>>>>For the sceptics, there is a movie with the problem presented
>>>>(Quicktime is required to play the stream):
>>>>http://download.dns-hosting.info/SERMediaProxy/
>>>>XtenProblemWithRTPProxy.mov
>>>>and an audio extract:
>>>>http://download.dns-hosting.info/SERMediaProxy/
>>>>XtenProblemWithRTPProxy.wav
>>>>This is the problem solved in our media proxy.
>>>>Regards,
>>>>Adrian
>>>>On Wednesday, Dec 10, 2003, at 11:53 Europe/Amsterdam, Jan Janak
>>>>wrote:
>>>>
>>>>>I am also wondering what is the problem with xten and rtp proxy,
>>>>>because
>>>>>I didn't have any problems.
>>>>>
>>>>>  Jan.
>>>>>
>>>>>On 10-12 12:29, Maxim Sobolev wrote:
>>>>>
>>>>>
>>>>>>Sorry for my sloppy English, actually I was asking you to explain
>>>>>>the
>>>>>>cause of the problem. If you claim that something was "solved" in
>>>>>>your
>>>>>>version you should probably know how behaviour of your version
>>>>>>differs
>>>>>>from the behaviour of the original one.
>>>>>>
>>>>>>-Maxim
>>>>>>
>>>>>>Adrian Georgescu wrote:
>>>>>>
>>>>>>
>>>>>>>See
>>>>>>>http://lists.iptel.org/pipermail/serusers/2003-November/003499.html
>>>>>>>
>>>>>>>On Wednesday, Dec 10, 2003, at 11:07 Europe/Amsterdam, Maxim
>>>>>>>Sobolev  wrote:
>>>>>>>
>>>>>>>
>>>>>>>>Adrian Georgescu wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>>Hello, we have released an alternative RTPProxy that works with
>>>>>>>>>SER
>>>>>>>>>nathelper module. Is a completely new program written in Python
>>>>>>>>>and
>>>>>>>>>should be able to run without recompilation on any system where
>>>>>>>>>Python is supported. We have tested Linux Debian  and Solaris 8.
>>>>>>>>>There are little differences against PortaOne's rtpproxy, mainly
>>>>>>>>> the
>>>>>>>>>problem with Xten choppy audio was solved.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>Interesting. I wonder what was the problem with Xten that you
>>>>>>>>solved?
>>>>>>>>
>>>>>>>>-Maxim
>>>>>>>>
>>>>>>>>
>>>>>>>>>Features
>>>>>>>>>- Compliant with SER nathelper module
>>>>>>>>>- Runs without recompilation on SUN Solaris
>>>>>>>>>- Xten audio quality is perfect  without gaps
>>>>>>>>>- Display active media sessions
>>>>>>>>>- Display traffic in minutes and kilobytes
>>>>>>>>>- Log to syslog the IP/port numbers and traffic statistics per
>>>>>>>>>session
>>>>>>>>>- Flexible design for adding new features
>>>>>>>>>To do list
>>>>>>>>>- Run it on separate machine than SER
>>>>>>>>>- Log network traffic per domain
>>>>>>>>>- Integrate traffic logging with CDRtool
>>>>>>>>>The application is free to download and use without limitations.
>>>>>>>>> You
>>>>>>>>>can download it from:
>>>>>>>>>http://download.dns-hosting.info/RTPProxy/
>>>>>>>>>The application is developed and supported by AG Projects. Any
>>>>>>>>>feedback is welcome at support at jobserver.org
>>>>>>>>>Regards,
>>>>>>>>>Adrian Georgescu
>>>
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