[SIPForum-discussion] Need clarification on Re-Invite ..

[ayyanar.kalimuthu at wipro.com]

Yes UPDATE can be used before and after session established, as rightly said by Rout.
 
Regards,
Ayyanar

________________________________

From: discussion-bounces at sipforum.org on behalf of shiba shankar rout
Sent: Mon 5/24/2010 11:28 PM
To: Ravi Ranjan Sinha
Cc: discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Need clarification on Re-Invite ..


No Ravi,

Its not like that. UPDATE can also be used after session establishment.   After Session establishment UAC uses UPDATE as Session Refresher.

Best Regards,
S S Rout



On Wed, Apr 28, 2010 at 2:28 PM, Ravi Ranjan Sinha <ravi.sinha at aricent.com> wrote:


	Difference between Update & Re-INVITE:
	 
	Update could be used before the session is established (before final response & ACK), while Re-INVIE can be used only after session is established.
	 
	Regards,

	Ravi SINHA 

	Société Aricent - Prestataire du Groupe SFR

	DGRE / Direction Intégration Validation et Bout-en-Bout/CoreMobile
	T : 01 71 08 05 50
	ravi-ranjan.sinha.prestataire at sfr.com

	

	ravi.sinha at aricent.com

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________________________________

	From: discussion-bounces at sipforum.org [discussion-bounces at sipforum.org] On Behalf Of Murali Vuppandla [mvuppand at cisco.com] 

	Sent: Monday, April 26, 2010 12:20 PM
	To: discussion at sipforum.org
	Subject: [SIPForum-discussion] Need clarification on Re-Invite ..
	


	There are two SIP  subscribers A and B configured with G729 codec. 

	 

	A calls B. B is ringing. Now, I want to simulate a scenario wherein  A sends Re-Invite to B and B responds accordingly. What actually makes A send Re-invite to B before the session is established(do we need any extra configurations to simulate this scenario). Any real time scenarios in this regard is much helpful.

	 

	And what's the exact difference between UPDATE and RE-INVITE. I had read somewhere UPDATE is sent before the session is established whereas Re-Invite is sent after the session is established. 

	 

	Please clarify me on this.

	 

	Regards,

	Murali.

	 


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