[Asterisk-Users] unknown RTP codec 19

[Tilghman Lesher]

On Wednesday 10 December 2003 11:08, SW wrote:
> Hi Folks,
>
> I had success with making SIP to H323 g/w calls using chan_h323 and
> G.729. Calls go through well though it takes incredibly long time to
> get connected which I thing due to fast start being disabled at the
> remote end, will ask remote side to fix it.
>
> There is a Notice message which appears on my * console which bothers
> me. While in a conversation, I get the following;
>
> File rtp.c line 418 (ast_rtp_read): Unknown rtp codec 19 received.
>
> I read in the mail archive that rtp codec 19 is comfort noise.
>
> Should I ignore this notice ?
>
> Or is there a better way to tell * asterisk to handle comfort Noise ?

Asterisk does not handle comfort noise.  Turn it off on the other side
of the connection, if possible.  Also, bug your vendor to update their
software, as RTP 19 has been reserved for several years.  RTP 13 is
the correct codec number for comfort noise.

-Tilghman