On 05/14/2009 05:23 PM, Stefan Sayer wrote: > o Daniel-Constantin Mierla [05/14/09 14:43]: > >> Hello, >> >> On 05/14/2009 12:06 PM, Stefan Sayer wrote: >> >>> Hello, >>> o bahan...@hotmail.de [05/13/09 11:23]: >>> >>> >>>> Hi, >>>> >>>> I am newcomer in SIP and Kamailio Wold an have a question. >>>> >>>> I have two IP Telefones and would like to realize with Kamailio an IP >>>> Communication. The Problem: >>>> >>>> a. The UA 1 calls UA 2 >>>> b. UA 2 start recording the video form UA 1, before a SIP call is >>>> established (early media) >>>> >>>> >>> early media is the other way round, from UA 2 to UA 1. UA 1 starts >>> sending media (audio, video, whatever) when it receives 200 OK with >>> SDP answer from UA1 - before it could not possibly know where to send >>> media to, what >>> codec etc. >>> >>> >> 183 reply usually has the sdp of callee, therefore the caller can send >> rtp. Or am I missing something? >> > can, but does usually not do. >
I have seen most of 183 with sdp, maybe is just me ... as opposite to 180 ringing, 183 session in progress has sdp. > It also does not make sense to not setup the session, if you do want to > have the session. > One usage case can be playing a message and letting caller to agree via dtmf/ivr before forwarding the call to destination. If does not agree and call is cancelled, there won't be any cdr reported to caller. Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com/ _______________________________________________ Kamailio (OpenSER) - Users mailing list Users@lists.kamailio.org http://lists.kamailio.org/cgi-bin/mailman/listinfo/users http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
