[SIPForum-discussion] can any one tell me about the one way media in this scenario.

[Deepesh singh]

http://static.scribd.com/docs/404kyva5620mx.swf?INITIAL_VIEW=width 
   
  has description on call flows and media path setup.
   
  Best regards,
  D Singh
  
Anthony Orlando <avorlando at yahoo.com> wrote:
  Sorry but I disagree. Once SDP is exchanged media is
flowing in both directions. In the case of voice I
can have a two way conversation without the ACK. That
call will be torn down after 60 seconds because no ack
is received but speech is in both directions.
--- Deepanshu Gautam wrote:

> What is your "media"? If it is media session to
> exchange media between A and B then i the answer
> would be "No". The media session is establish only
> after ACK. A session will be establish after initial
> INVITE (Which is called as early dialog) but that is
> not used to exchnage media.
> 
> Deepanshu Gautam Senior R&D Engineer
> Research & Std Dept - App & Service Product Line
> Huawei Technologies Co. Ltd. - P.R. of China
> Tel: +86 25 84676090
> Fax: +86 25 84676060
> Mobile: +86 138 01583544
> Email: deepanshu at huawei.com
> ----- Original Message ----- 
> From: arun kumar 
> To: discussion at sipforum.org 
> Sent: Friday, January 04, 2008 4:25 PM
> Subject: [SIPForum-discussion] can any one tell me
> about the one way media in this scenario.
> 
> 
> HI Everybody,
> 
> Here is a Scenario , A SIP phone(A) communicates
> with SIP phone (B) across the proxy
> 
> 
> (A) INVITE/SDP-----> (B) 
> and after the 180 ring (B) responds with 200 OK/SDP
> 
> by this time (A) and (B) have exchanged the SDP 
> so before (A) sends an ACK to (B) will there be a
> one way media from (A) -- > (B) ?
> 
> 
> 
> 
> -- 
> With Regards
> Arun Kumar .P 
> 
> 
>
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