You would be correct norm that IANA doc tells you the SDP codec assignment numbers, for numbers 96+ you need to look at the rest of the SDP to see what they are... For the lower statically numbered codecs they may or may not appear in the list On 6/22/13 10:23 PM, "Nathan Neulinger" <nneul@mst.edu> wrote:
I think this may be what you're looking for...
http://www.iana.org/assignments/rtp-parameters/rtp-parameters.xml
96+ are dynamic apparently
0, 8 pcmu and pcma 3 is gsm
At least according to that list... I don't know enough about the protocol to know how the dynamic ones are assigned.
This that's odd though is that the list on that page is in decimal, with comfort noise at 13. That would make sense if it were in hex (19), so maybe I'm misinterpreting.
-- Nathan
On 06/22/2013 10:02 PM, Sayyed Mohammad Emami Razavi wrote:
m=audio 5016 RTP/AVP 96 3 107 110 0 8 101. Is there any digits represents sip codecs in subject?!
Can any body describe this statement?!
For example in response to one of my questions, Steven told me: "Your phone is not offering any codecs in the INVITE: m=audio 15696 RTP/AVP 19 The only payload type listed is 19 (comfort noise) - there are no codecs listed." base on my logs: http://pastebin.freeswitch.org/21084
-- Ken http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org irc.freenode.net #freeswitch