[Freeswitch-users] Codecs and things

[Ahmed Naji]

Hi Rupa,

Thanks for this.

Re: regular mode, are we saying to set both bypass-media and proxy-media to
false, and this would put it into regular mode ?

I'll look into alternatives re: proxy per your feedback.

Regards,

Ahmed.


2010/1/11 Rupa Schomaker <rupa at rupa.com>

>
>
> On Mon, Jan 11, 2010 at 7:15 AM, Ahmed Naji <a.alalousi at gmail.com> wrote:
>
>> Hi Rupa,
>>
>> Thanks for your feedback.
>>
>> One thing that caught my eye in your reply is you mentioning that proxy
>> media is a special hack for T38. The reason I'm using proxy mode is to fully
>> mask the identity of end points from each other. If there is another of
>> achieving this in FS then I am definitely very interested in hearing about
>> it and implementing it.
>>
>>
> The stock answer is that FS is not a proxy.  If you want a proxy use proxy
> software (opensips/kamilio/whatever).  Proxy media mode is generally not the
> right answer.
>
>
>> You also mention regular mode, and I couldn't find mention of this
>> anywhere in the Wiki. So far, my understanding was that you could run FS in
>> either proxy or bypass media modes. Can you elaborate a little bit and
>> discuss this a bit more ?
>>
>>
> Regular mode is just the default mode FS runs in where all media passes
> through it.
>
>
>> Thanks a lot in advance.
>>
>> Regards,
>>
>> Ahmed.
>>
>>
>> 2009/12/23 Rupa Schomaker <rupa at rupa.com>
>>
>> On Tue, Dec 22, 2009 at 2:55 PM, Ahmed Naji <a.alalousi at gmail.com> wrote:
>>> > Hello people,
>>> >
>>> > Can someone please clear the following ambiguities with codecs:
>>> >
>>> > Are we definitively able to run pass-through codecs (e.g. G.729) in
>>> Proxy
>>> > Media mode, or does FS need to be running in bypass-media ? the Wiki is
>>> not
>>> > clear in this regard
>>>
>>> Yes, you can use proxy media, bypass media, or even regular mode if
>>> you don't transcode (special for g729).  Proxy media is really a
>>> special hack that should only be used for T38 passthrough.  If you are
>>> using it for other purposes, think about it some more....
>>>
>>> > When an A-leg has negotiated a pass-through media codec, can the B-leg
>>> be
>>> > transcoded into a non-pass-through codec, and vice-versa ? think A-leg
>>> > incoming with a G.729 codec, and target for B-leg needs to be setup
>>> with a
>>> > GSM-codec, say
>>>
>>> That would require transcoding - which can't be done if the codec is
>>> pass-through.
>>>
>>> > Where in the developer's set of documentation are codecs discussed ? I
>>> would
>>> > like to start porting some code of mine for G.729a/b/ab form a ti DSP
>>> > platform to FS. FS lacking full G.729 support is proving quite a
>>> hindrance,
>>> > and there is no clear direction from the dev community as to when the
>>> same
>>> > will be available. Incidentally, any news on this effort ? where are we
>>> with
>>> > code, and what's an ETA for a Beta ?
>>>
>>> I'd say look at the broadvoice or other simple self-contained codecs
>>> are done.  Currently the only supported g729 solution is to use a
>>> digium board with mod_dahdi_codec.
>>>
>>> I don't have any info on a software based g729 solution.
>>>
>>> > On the same lines as (3) above, there is a codec dev template in the
>>> source
>>> > tree. Again, where can I find documentation relating to this ? the
>>> template
>>> > has hardly any docs at all.
>>> >
>>> > Best regards and warm wishes for a Merry Christmas and a great New Year
>>> to
>>> > one and all.
>>> >
>>> > Ahmed.
>>> >
>>> >
>>> > --
>>> > Ahmed A. Ibrahim-Naji Al-Alousi
>>> > Ph.D., MIEE, MBCS
>>> >
>>> > _______________________________________________
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>>> >
>>> >
>>>
>>>
>>>
>>> --
>>> -Rupa
>>>
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>>
>>
>>
>> --
>> Ahmed Naji
>>
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>>
>
>
> --
> -Rupa
>
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-- 
Ahmed Naji
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