[Freeswitch-users] absolute_codec_string question

Steven Ayre steveayre at gmail.com
Wed Apr 27 02:42:59 MSD 2011


No problem! :)

Steve on iPhone

On 26 Apr 2011, at 20:53, Michael Collins <msc at freeswitch.org> wrote:

> This email is a perfect example of community members stepping up! Thanks Steven!!
> -MC
> 
> On Tue, Apr 26, 2011 at 1:20 AM, Steven Ayre <steveayre at gmail.com> wrote:
> {ignore_early_media,absolute_codec_string='G729,PCMU'}
> 
> The problem is that FS splits the variable names using commas. When there's a comma in a value it gets confused. Using quotation marks doesn't make any difference - they're treated as part of the value.
> 
> So FS is seeing this:
> 
> ignore_early_media
> absolute_codec_string='G729
> PCMU'
> 
> So the only codec that gets set is the G729.
> 
> There is a workaround for this. You want to use {ignore_early_media,absolute_codec_string=^^:G729:PCMU}.
> 
> The ^^ at the start of a value tells FS 'treat the following character as a comma'. Now FS sees:
> 
> 
> ignore_early_media
> absolute_codec_string=^^:G729:PCMU
> 
> And sets absolute_codec_string to G729,PCMU.
> 
> -Steve
> 
> 
> 
> On 25 April 2011 21:44, Nicolas Brenner <nico at clickfono.com> wrote:
> Oops, sorry you are right, I copied it wrong, doesn't fix it though.
> 
> 
> On Mon, Apr 25, 2011 at 3:35 PM, Vitalie Colosov <vetali100 at gmail.com> wrote:
> Maybe I am wrong, but I see a typo in the following string, after "ignore_early_media":
> 
> originate {ignore_early_media,absolute_codec_string=G729}user/1001 &bridge(user/1000)
> 
> It should be:
> 
> originate {ignore_early_media=true,absolute_codec_string=G729}user/1001 &bridge(user/1000)
> 
> Vitalie
> 
> 
> 2011/4/25 Nicolas Brenner <nico at clickfono.com>
> Thanks, yes, here you go:
> 
> I'm making calls from the console to an X-Lite registered on extension 1001 which doesn't support G729. Calls 1 and 3 below fail because the codec options are not supported, and even though on the third call the absolute_codec_string variable should be 'G729,PCMU', it is not offering both codecs.
> 
> 
> On http://pastebin.freeswitch.org/16167 the SIP trace for:
> 
> originate {ignore_early_media,absolute_codec_string=G729}user/1001 &bridge(user/1000)
> 
> This is the SDP:
> 
>    v=0
>    o=FreeSWITCH 1303734153 1303734154 IN IP4 127.0.0.1
>    s=FreeSWITCH
>    c=IN IP4 127.0.0.1
>    t=0 0
>    m=audio 24036 RTP/AVP 18 101 13
>    a=rtpmap:101 telephone-event/8000
>    a=fmtp:101 0-16
>    a=ptime:20
> 
> 
> On http://pastebin.freeswitch.org/16169 the SIP trace for:
> 
> originate {ignore_early_media,absolute_codec_string=PCMU}user/1001 &bridge(user/1000)
> 
> This is the SDP:
> 
>    v=0
>    o=FreeSWITCH 1303733515 1303733516 IN IP4 127.0.0.1
>    s=FreeSWITCH
>    c=IN IP4 127.0.0.1
>    t=0 0
>    m=audio 24896 RTP/AVP 0 101 13
>    a=rtpmap:101 telephone-event/8000
>    a=fmtp:101 0-16
>    a=ptime:20
> 
> 
> On http://pastebin.freeswitch.org/16170 the SIP trace for:
> 
> originate {ignore_early_media,absolute_codec_string='G729,PCMU'}user/1001 &bridge(user/1000)
> 
> This is the SDP:
> 
>    v=0
>    o=FreeSWITCH 1303733520 1303733521 IN IP4 127.0.0.1
>    s=FreeSWITCH
>    c=IN IP4 127.0.0.1
>    t=0 0
>    m=audio 25138 RTP/AVP 18 101 13
>    a=rtpmap:101 telephone-event/8000
>    a=fmtp:101 0-16
>    a=ptime:20
> 
> 
> 
> 
> On Mon, Apr 25, 2011 at 2:20 PM, Paul Cupis <paul at cupis.co.uk> wrote:
> On 25/04/11 18:08, Nicolas Brenner wrote:
> > I'm trying to use the
> > absolute_codec_string with originate from the console, like so:
> >
> > originate
> > {ignore_early_media,verbose_sdp=true,absolute_codec_string='G729,PMCU'}sofia/gateway/mygateway/444444
> > &bridge(user/1001)
> >
> > Paul, I am using {absolute_codec_string='G729,PCMU'}, and I get the same as
> > if I don't quote the string, or if I just specify one codec:
> 
> Can you provide (on pastebin.freeswitch.org) a complete log of a call,
> please?
> 
> Regards,
> 
> 
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