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[MMUSIC] SDPCapNeg question



Hi

Reading the SDPCapNeg draft and esp. the syntax in 3.5.1 I get the idea that it is possible to formulate an SDP like

m=audio 54320 RTP/AVP 0
a=tcap:1 RTP/AVPF
a=pcfg:1 

in other words just an empty potential configuration.

Even though this is close to stupidity I just want to make sure that it is possible (and no ... I don't see any use case at all). Also it does not seem to break the syntax as far as I can see in 3.5 and 3.6.

Speaking of the [...] and (...) in the syntax , I have tried to find the document that describes these and their exact meanings, where do I find this info ?(need to make the syntax in the image attribute draft correct).

/Ingemar

******************************************* 
Ingemar Johansson 
Senior Research Engineer, IETF "nethead" 
EAB/TVP - Multimedia Technologies 
Ericsson Research Ericsson AB 
Box 920 S-971 28 Luleå, Sweden 
Tel: +46 (0)8 4043042 
ECN: 850-43042 
Mobile: +46 (0)730 783289 
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