[Home]

Summary:ASTERISK-02732: Unknown RTP codec 72 received
Reporter:Roy Sigurd Karlsbakk (rkarlsba)Labels:
Date Opened:2004-11-03 06:37:35.000-0600Date Closed:2011-06-07 14:11:53
Priority:TrivialRegression?No
Status:Closed/CompleteComponents:Channels/chan_sip/CodecHandling
Versions:Frequency of
Occurrence
Related
Issues:
Environment:Attachments:
Description:Hi

With clients on X-pro, I keep getting these lines every 2-5 seconds.
Nov  3 13:33:15 NOTICE[1113594800]: rtp.c:489 ast_rtp_read: Unknown RTP codec 72 received

I tried to google etc about it and found other posts with the same error message, but no solution.

The audio runs over G.711A, and sound is fine...

roy
Comments:By: Mark Spencer (markster) 2004-11-03 09:07:03.000-0600

What is codec 72 in the SDP from the X-pro client?

By: Olle Johansson (oej) 2004-11-03 13:50:37.000-0600

Please add a SIP debug of this INVITE dialogue

By: Olle Johansson (oej) 2004-11-03 13:56:44.000-0600

From IANA.org RTP specs:
72--76     reserved for RTCP conflict avoidance             [RFC3550]

I really want to see what X-pro is doing here... :-)

By: Mark Spencer (markster) 2004-11-03 22:47:04.000-0600

Unless you have something else to add, this is clearly not an Asterisk bug since they're sending something not present in their SDP.