[Freeswitch-users] SBC In-band DTMF

[Steven Ayre]

Static payload values (<96) can be reassigned dynamically with a=rtpmap
lines, but could perhaps conflict with loaded modules already using those
values.

On 18 January 2013 10:26, Paul Cupis <paul at cupis.co.uk> wrote:

> On Fri, Jan 18, 2013 at 01:57:36AM +0000, Steven Ayre wrote:
> >      <param name="rfc2833-pt" value="0"/>
> >
> >    What're you hoping to do here? This sets the payload type value. 0 is
> a
> >    valid pt. This won't disable it, it'll instead use the value 0. That
> >    happens to be the one for G711, so if that codec is enabled you're
> just
> >    going to get a conflict.
>
> If the rfc2833-pt is set to a value <96 it is outside the allowed range
> for dynamic payload negotiation and FS will not offer RFC2833 support
> in the SDP.
>
> ref: sofia_glue.c
>
> Regards,
>
>
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