[Users] codec translation

[Daniel-Constantin Mierla]

Hello Atle,

On 02/15/07 13:04, Atle Samuelsen wrote:
> Hi Again Stefano,
>
> Me and Stefan Sayer made a patch to rtpproxy and to nathelper module in
> ser, so it changes the sdp, and do transcodeing. It works, but it has a
> few bugs in the nathelper code atleast, and it needs atleast a function
> to check codecs etc. 
>
> but, on the other hand.. we have had a few calls over it, and it seems
> to work rather Ok when my nathelper patch does'nt crash ser :-)
>
> So, if anyone is willing, they can proberbly get to adopt the code, and
> productify it. 
>   
could you upload the patches to the tracker? It sounds very useful in 
some scenarios. We will have a look and make sure that the patch for 
nathelper gets very well integrated in existing code. Here is the link 
to the tracker:
http://sourceforge.net/tracker/?atid=743022&group_id=139143&func=browse

Thanks,
Daniel

> So alittle status on the code: 
>
> The code was written for SER trunc about half a year ago. The nathelper
> part is written by me, who does'nt do C very much, so that part is very
> flacky. but as a proof of concept it works. 
>
> There is a need of a function as decribed above that can check what
> codecs the UA supports.
>
>
> - Atle
>
> * Stefano Capitanio <s.capitanio at caspur.it> [070215 11:52]:
>   
>> Hi,
>>
>> we would be very interested! :-)
>> I think it's a great idea but...what do you mean with "very simple" ?!
>>
>> Stefano
>>
>> Atle Samuelsen ha scritto:
>>     
>>> Hi Guys,
>>>
>>> Just qurious.. How intrested are you guys in a very simple transcoder,
>>> wich is based on rtpproxy ? 
>>> - Atle
>>>
>>> * Andreas Granig <andreas.granig at inode.info> [070215 11:09]:
>>>  
>>>       
>>>> Hi,
>>>>
>>>> rtpproxy and mediaproxy do media-relaying and OpenSER does SIP routing. Both have nothing to do with codecs, which are 
>>>> negotiated end-to-end. So yes, OpenSER and rtpproxy/mediaproxy do support G729 in a sense that they allow UACs to 
>>>> communicate with G729. If you want to transcode between codecs (e.g. G711 <-> G729), you need - as Daniel already said - a 
>>>> transcoder like Asterisk.
>>>>
>>>> Andreas
>>>>
>>>> raviprakash sunkara wrote:
>>>>    
>>>>         
>>>>> Hello Daniel ,
>>>>> I'm Also Having the Same doubt on g729 Codec,
>>>>> I'm  using RTPproxy with Nathelper ,
>>>>> OpenSER and RTP proxy does  media signaling when the Call is Established,
>>>>> My main question is
>>>>> Is RTP proxy support the G729, with OpenSER,
>>>>> With out using the Transcoder ( Asterisk ) How can OpenSER signals the G729 Codec.
>>>>> On 2/15/07, *Daniel-Constantin Mierla * <daniel at voice-system.ro <mailto:daniel at voice-system.ro>> wrote:
>>>>>   Hello,
>>>>>   you need a transcoder in the middle. OpenSER does only signaling, so it
>>>>>   is not able to transcode. Asterisk, for example, does.
>>>>>   Cheers,
>>>>>   Daniel
>>>>>   On 02/15/07 10:57, tusker keg wrote:
>>>>>    > Howdy
>>>>>    >
>>>>>    > I have a situation  I hope you guys will help me out with
>>>>>    >
>>>>>    > I am receiving  call from a VOIP  peer  (SIP Call) and the peer can
>>>>>    > only send them as G711.
>>>>>    > I need to redirect to call to another voip peer over the wan and due
>>>>>    > to bandwidth considerations I need to translate the codec to g729.
>>>>>    >
>>>>>    > Any ideas on how to do this,
>>>>>    >
>>>>>    > Sample config file will be help
>>>>>    >
>>>>>    > Regards
>>>>>    >
>>>>>    > ./Tusker
>>>>>    >
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>>>>> -- 
>>>>> Thanks and Regards
>>>>> Ravi Prakash Sunkara
>>>>> ravi.sunkara at hyperion-tech.com <mailto:ravi.sunkara at hyperion-tech.com>
>>>>> M:+91 9985077535
>>>>> www.hyperion-tech.com <http://www.hyperion-tech.com>
>>>>> Client and Parent company :- www.august-networks.com <http://www.august-networks.com>
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