[Freeswitch-users] proxy SDP

[Sam]

Hello,

AS freeswitch modifies SDP ( Media Description & Media Attributes) so is
there any way to just bypass that process.

Regards
Sam


On Thu, Apr 14, 2011 at 6:32 PM, Steven Ayre <steveayre at gmail.com> wrote:

> I don't mean they're equivalent, because proxy_media has other sideaffects
> such as disabling many features.
>
> I mean there are different better ways to avoid transcoding.
>
> What you suggested with bridge should indeed avoid it. Without the
> absolute_codec_string the bleg would be offered all codecs supported by FS
> which may be more than supported by the caller, however with that setting it
> would only offer those supported by both the caller and FS. The callee will
> pick one it supports (or return 488 Not Acceptable Here). The aleg will then
> use the same codec as the bleg, so at that point both legs will be using the
> same codec so no transcoding will take place (unless you try using something
> like eavesdrop/record). You could then if you wanted handle the 488 Not
> Acceptable Here by redialing without absolute_codec_string to try again,
> this time the bleg could use a different codec than the aleg (transcoding).
>
> -Steve
>
>
>
> On 14 April 2011 13:28, Sergey Okhapkin <sos at sokhapkin.dyndns.org> wrote:
>
>> Do you mean
>>
>> set proxy_media=true
>>
>> is the equivalent of
>>
>> set late_negotiation=true
>> bridge {absolute_codec_string=${ep_codec_string}}blah
>>
>> and transcoding will never happen?
>>
>> On Thursday 14 April 2011, Steven Ayre wrote:
>> > Proxy media is not required for 2 NAT clients to talk to each other.
>> >
>> > Transcoding won't be used if both legs use the same codec, and you can
>> use
>> > late-negotation/absolute_codec_string to encourage that.
>> >
>> > -Steve
>> >
>> > On 14 April 2011 11:22, Sergey Okhapkin <sos at sokhapkin.dyndns.org>
>> wrote:
>> > > Proxy media is useful not for T38 only. It's a way for 2 NATed clients
>> to
>> > > communicate with each other if there are common codecs, no transcoding
>> > > involved.
>> > >
>> > > On Thursday 14 April 2011, Steven Ayre wrote:
>> > > > You misunderstand I think... it *isn't* needed for T38 any longer.
>> Only
>> > >
>> > > in
>> > >
>> > > > very old versions.
>> > > >
>> > > > -Steve
>> > > >
>> > > > On 13 April 2011 23:17, Madovsky <infos at madovsky.org> wrote:
>> > > > > maybe change the param name to proxy_media_t38 ;)
>> > > > >
>> > > > > ----- Original Message -----
>> > > > > From: "Kristian Kielhofner" <kris at kriskinc.com>
>> > > > > To: "FreeSWITCH Users Help" <
>> freeswitch-users at lists.freeswitch.org>
>> > > > > Sent: Wednesday, April 13, 2011 2:10 PM
>> > > > > Subject: Re: [Freeswitch-users] proxy SDP
>> > > > >
>> > > > >
>> > > > > Brian,
>> > > > >
>> > > > >  For all of the confusion proxy media creates I still see cases
>> where
>> > > > >
>> > > > > it is useful...  It shouldn't be removed completely.
>> > > > >
>> > > > > On Tue, Apr 12, 2011 at 8:55 PM, Brian West <brian at freeswitch.org
>> >
>> > >
>> > > wrote:
>> > > > > > We aren't a proxy... we have transcended into this quasi proxy
>> in
>> > >
>> > > some
>> > >
>> > > > > > scenarios which mostly involve t.38... as for proxy media DO NOT
>> > > > > > USE IT. Just saying it might go away since the purpose of it is
>> > > > > > now not needed since we have full t.38.
>> > > > > >
>> > > > > > Thanks,
>> > > > > > Brian
>> > > > >
>> > > > > --
>> > > > > Kristian Kielhofner
>> > > > >
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