Subject: RE: [SIP] Proxy - A basic question

From: De Leo Walter <[email-masked]>
Date: Thu, 7 Jun 2001 17:54:34 -0300

Hi
In initial deployments of sip bridging, with perhaps a couple of MGC talkin
SIP between each other is not uncommon that they 'know' each other's IP
address. I agree that for scalability issues and for advanced service
implementations it is desireble the existence of proxies, they could be
obviated in that kind of scenarios in an initial stage.

What do you think?

Best Regards,
Walter.
> -----Mensaje original-----
> De:	Victor A Paulsamy [SMTP:[email-masked]]
> Enviado el:	Miércoles 6 de Junio de 2001 10:42
> Para:	Varadarajan Srinivasan
> CC:	SIP; Victor A Paulsamy
> Asunto:	RE: [SIP] Proxy - A basic question
> 
> 	Hi Varadarajan,
> 	 
> 	Even if an UA is calling another UA within the same domain, proxy
> receives the call, looks up in the registration database, extracts Contact
> address and forwards the call. To reach the callee directly, caller needs
> to know the IP address and port of the callee, which is very unlikely in
> real life.
> 	 
> 	Warm regards,
> 	 
> 	--victor
> 	 
> 	 -----Original Message-----
> 	From: [email-masked]
> [mailto:[email-masked]]On Behalf Of Varadarajan Srinivasan
> 	Sent: Wednesday, June 06, 2001 8:09 PM
> 	To: [email-masked]
> 	Subject: [SIP] Proxy - A basic question
> 	
> 	
> 	Hi, 
> 
> 	From RFC, We are asked to look upon proxy as DNS sort. 
> 
> 	Can I assume that UA "MUST"  be tagged to a proxy? 
> 	That is all calls to UA outside its domain should come via proxy? 
> 	  
> 	  
> 	Mr. Varadarajan Srinivasan,
> 	Senior Systems Engineer,
> 	Wipro Technologies.
> 	  
> 

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