[asterisk-users] any codec passthru mode

Pavel Jezek pavel.jezek at i.cz
Mon Jun 4 08:50:22 MST 2007


some work has been done here:
http://bugs.digium.com/view.php?id=4825
but seems to be quite death and probably not directly applicable to 
current asterisk src :'(


SIP wrote:
> That just seems really, REALLY dumb for a program of this magnitude.
>
> I know this has been patched here and there by one person or another, 
> but does anyone know if any of these patches to make CODEC negotiation 
> actually, you know, negotiate a CODEC will ever make it into the core 
> src?
>
>
> Jaswinder Singh wrote:
>> Asterisk by default uses the codec preferred by other device/client  .
>> Asterisk 1.2 ( dunno abt 1.4 specifically)  is not intelligent enough
>> to check if it can avoid transcoding by forcing same codec on other
>> side of conversation . If both sides prefer g729 then asterisk does
>> not do transcoding but if one side prefer gsm and other prefers g729
>> and the gsm side can also support g729 still asterisk will transcode .
>> Someone posted a patch to this in mantis bug tracking system at digium
>> for 1.2 .. google for it and maybe you can find  .
>>
>> On 31/05/07, Rizwan Hisham <rizwanhasham at gmail.com> wrote:
>>> Does anybody has any documentation on codec negotiation within 
>>> asterisk?
>>>
>>> Well im using free g729 codec for testing purposes. i mentioned g729 
>>> just as
>>> an example. whatever codec is mentioned in user perefernce, asterisk 
>>> uses
>>> ulaw to throw out the call.
>>>
>>>
>>> On 5/30/07, Marco Mouta <marco.mouta at gmail.com> wrote:
>>> > so you r sure you have g729 licences installed and ur * is 
>>> transcoding
>>> your RTP streaming?
>>> >
>>> > Test the work flow with disallow=all and allow=g729, can be my 
>>> mistake but
>>> I remember to read somewhere on the net any issue about codec 
>>> negotiating
>>> precedence when you use allow=all.
>>> >
>>> > good luck
>>> >
>>> >
>>> >
>>> > On 5/30/07, Rizwan Hisham < rizwanhasham at gmail.com> wrote:
>>> > >
>>> > > Hi all,
>>> > > My configuration is:
>>> > > USER ----(connects to)----> ASTERISK---(connects to)--->CARRIER-OUT
>>> > >
>>> > > i want the user preffered codec to pass thru asterisk to 
>>> carrier-out.
>>> what i mean is:
>>> > > USER ----(user uses g729)----> ASTERISK---(asterisk should use 
>>> g729 for
>>> dialing out)--->CARRIER-OUT
>>> > >
>>> > > instead, this is what happens
>>> > > USER ----(user uses g729)----> ASTERISK---(asterisk uses
>>> g711u)--->CARRIER-OUT
>>> > >
>>> > > How can i force asterisk to use user preffered codec for dialing 
>>> out so
>>> that my asterisk machine saves time by no conversion
>>> > > USER PREFERENCE IS
>>> > > disallow=all
>>> > > allow=g729
>>> > >
>>> > > CARRIER PREFERENCE IS
>>> > > allow=all
>>> > >
>>> > > Anybody who can help?
>>> > >
>>> > > --
>>> > > Rizwan Hisham
>>> > > Software Engineer
>>> > > AXVOICE Inc.
>>> > > _______________________________________________
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>>> > >
>>> >
>>> >
>>> >
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>>>
>>> -- 
>>> Rizwan Hisham
>>> Software Engineer
>>> AXVOICE Inc.
>>> _______________________________________________
>>> --Bandwidth and Colocation provided by Easynews.com --
>>>
>>> asterisk-users mailing list
>>> To UNSUBSCRIBE or update options visit:
>>>
>>> http://lists.digium.com/mailman/listinfo/asterisk-users
>>>
>>>
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