Transaction video header

Joined: Sun 28 of Feb, 2010

Transaction video header

Posted:Wed 03 of Mar, 2010 (08:26 UTC)
hi friends,,,
i need some clariffications regarding sip transacton ,,,,

for example the two user agents are communicate with the audio sip transaction while at that moment i need the video communication also ,,
so at this time of moment which type of messages, message headers are used and which protocol can be supposed,,,,

Thanks and Regards