[SIPForum-techwg] TCP vs. UDP (SP adoption of TCP?)

[Francois Audet]

So, by now, most significant PBX & UC vendors on this list seemed to have expressed support for the idea of making TCP either mandatory or at least the recommended option.
 
I wonder just where the UDP perceived requirement comes from. I do not think the "well, last time I try it, there was a lot of it" argument holds water. And the idea of a race to the bottom (i.e., UDP) sounds self-defeating to me.
 
 
 


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	From: techwg-bounces at sipforum.org [mailto:techwg-bounces at sipforum.org] On Behalf Of Joanne McMillen
	Sent: Tuesday, May 20, 2008 16:43
	To: Elwell, John; Hiers, David; Russell Bennett; Zweig, Greg; techwg at sipforum.org
	Subject: Re: [SIPForum-techwg] TCP vs. UDP (SP adoption of TCP?)
	
	
	Bingo...  ;-)
	 
	Joanne

		----- Original Message ----- 
		From: Elwell, John <mailto:john.elwell at siemens.com>  
		To: Hiers, David <mailto:David_Hiers at adp.com>  ; Russell Bennett <mailto:Russell.Bennett at microsoft.com>  ; Zweig, Greg <mailto:gzweig at sonusnet.com>  ; techwg at sipforum.org 
		Sent: Tuesday, May 20, 2008 12:14 PM
		Subject: Re: [SIPForum-techwg] TCP vs. UDP (SP adoption of TCP?)

		Yes, this has always been the thing that puzzled me. A lot of vendors
		and service providers have tried to reproduce PSTN capabilities with
		SIP. Yet PSTN signalling protocols always ran over a reliable transport,
		so the obsession with UDP seems to be a contradiction.
		
		John 
		
		

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