[asterisk-users] SIP/TCP?

Tzafrir Cohen tzafrir.cohen at xorcom.com
Fri Jan 5 15:55:47 MST 2007


On Fri, Jan 05, 2007 at 04:11:15PM -0600, James R. Stevens wrote:
> TCP is a connection oriented protocol ..as others mentioned, it 
> superiority comes because it knows when packets are dropped to resend 
> them. It also has mechanisms for flow control etc.. SIP is a 
> connection-less protocol. It uses 'best effort' transmissions..if u 
> want its delivery guaranteed you must encapsulate it.

Actually SIP is all about session management. 
The payload itself is RTP which indeed should be UDP for the reasons you
mention. SIP itself is much less timing sensitive.

-- 
               Tzafrir Cohen       
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