Hi everybody,

I have found following question asked number of times but I could not found 
the answer.  I would appreciate if somebody shed some light on this subject, 
like if there is undergoing standardization of this matter or any widely 
accepted solution.

Since each codec has different support for packetization interval (ptime) 
and SDP can specify multiple coders there is a need for specifying multiple 
ptime attributes.  However, so far I have not seen anybody using multiple 
ptime attribute in one SDP.  I saw suggestions that something like:

m=audio 10000 RTP/AVP 0 8
a=rtpmap: 0 PCMU/8000
a=ptime:20
a=rtpmap: 8 PCMA/8000
a=ptime:30

, could be used but no RFC describes it and I have not seen it in practice.

Thank you,
Nenad

_________________________________________________________________
Movies, Music & More! Visit Sympatico / MSN Entertainment 
http://entertainment.sympatico.msn.ca/

_______________________________________________
Sip-implementors mailing list
[email protected]
https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors

Reply via email to