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

Tue Jun 1 16:36:37 UTC 2010

If a is calling b  and b before sending 200OK with sdp can send update or
the A only  can send update.
183 sdp early media can also be used for the is to play announcement or
ringtone then wats the diff b/w update and 183 here.
Correct me if i m wrong.

Regards,
Vikas G

On Wed, May 26, 2010 at 11:01 AM, arvind shukla <
arvind.shukla2007 at yahoo.co.in> wrote:

>   As per my understanding live example for Update is to play announcement
> or ringtone and for Re-invite is to put the call on Hold.
> Regds,
> Arvind
> --- On *Tue, 25/5/10, Abinash Sarangi <s_abinash at hotmail.com>* wrote:
>
>
> From: Abinash Sarangi <s_abinash at hotmail.com>
>
> Subject: Re: [SIPForum-discussion] Need clarification on Re-Invite ..
> To: rout.shibashankar at gmail.com
> Cc: discussion at sipforum.org
> Date: Tuesday, 25 May, 2010, 9:23 PM
>
>
> I agree to your point..Here is what I think
> Before session is established :
> You can use UPDATE to change SDP . If Re-INVITE is sent with a different
> CSeq it would be considered another transaction before the previous
> transaction is successfully completed  which will leave the state
> machines[uac and uas] in an error - like condition. A TU  might sense it as
> a re-transmitted INVITE as well.
>
> UPDATE can be sent by a UA within a dialog (early or confirmed) to update
> session parameters without impacting the dialog state itself.
>
> After the session is established :
> re-INVITE to change media stream or SDP or any other param or refresher .
>
> What will be the impact at TU level if UPDATE is used after established
> session ?
>
> Thanks & Regards
> -Abinash
>
>
>
>
> ------------------------------
> Date: Tue, 25 May 2010 20:38:26 +0530
> Subject: Re: [SIPForum-discussion] Need clarification on Re-Invite ..
> From: rout.shibashankar at gmail.com
> To: s_abinash at hotmail.com
> CC: ravi.sinha at aricent.com; discussion at sipforum.org
>
> No Ravi. The word used by you for re-Invite is wrong.
> You mentioned "Re-INVITE before an established session is considered as
> INVITE retransmission".
> On this stage you can not call it as Re-invite. Its just  a re-transmission
> of original request (INVITE) as per as TIMER.
>
> Again you mentioned "UPDATE can be optionally used for session refreshing
> . No hard rule of using UPDATE and re-INVITE interchangeably after the
> established session".
> Ravi,  this is implementation specific. UAC can use INVITE or UPDATE
> request for  session refreshment.
>
> Hope you got the answer.
>
> Best Regards,
> S  S Rout
>
>
>
> On Tue, May 25, 2010 at 8:27 PM, Abinash Sarangi <s_abinash at hotmail.com<http://in.mc953.mail.yahoo.com/mc/compose?to=s_abinash@hotmail.com>
> > wrote:
>
> Re-INVITE before an established session is considered as INVITE
> retransmission
> So SIP extensions came up with the idea of having another method called
> UPDATE which can be used before successful establishment either to change
> the SDP or change any params as such.
> Through re-INVITE after successful session, we can do SDP change or session
> refresh etc etc.
> UPDATE can be optionally used for session refreshing . No hard rule of
> using UPDATE and re-INVITE interchangeably after the established session
>
> Thanks & Regards
> -Abinash
>
>
>
>
> ------------------------------
> Date: Mon, 24 May 2010 23:28:22 +0530
> From: rout.shibashankar at gmail.com<http://in.mc953.mail.yahoo.com/mc/compose?to=rout.shibashankar@gmail.com>
> To: ravi.sinha at aricent.com<http://in.mc953.mail.yahoo.com/mc/compose?to=ravi.sinha@aricent.com>
> CC: discussion at sipforum.org<http://in.mc953.mail.yahoo.com/mc/compose?to=discussion@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<http://in.mc953.mail.yahoo.com/mc/compose?to=ravi.sinha@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<http://in.mc953.mail.yahoo.com/mc/compose?to=ravi-ranjan.sinha.prestataire@sfr.com>
> *
>
> ravi.sinha at aricent.com<http://in.mc953.mail.yahoo.com/mc/compose?to=ravi.sinha@aricent.com>
> 124 Boulevard Verdun - Prologue
> 92400 Courbevoie
> www.sfr.fr
>
>  ------------------------------
> *From:* discussion-bounces at sipforum.org<http://in.mc953.mail.yahoo.com/mc/compose?to=discussion-bounces@sipforum.org>[
> discussion-bounces at sipforum.org<http://in.mc953.mail.yahoo.com/mc/compose?to=discussion-bounces@sipforum.org>]
> On Behalf Of Murali Vuppandla [mvuppand at cisco.com<http://in.mc953.mail.yahoo.com/mc/compose?to=mvuppand@cisco.com>]
>
>
> *Sent:* Monday, April 26, 2010 12:20 PM
> *To:* discussion at sipforum.org<http://in.mc953.mail.yahoo.com/mc/compose?to=discussion@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.
>
>
> ------------------------------
> "DISCLAIMER: This message is proprietary to Aricent and is intended solely
> for the use of the individual to whom it is addressed. It may contain
> privileged or confidential information and should not be circulated or used
> for any purpose other than for what it is intended. If you have received
> this message in error, please notify the originator immediately. If you are
> not the intended recipient, you are notified that you are strictly
> prohibited from using, copying, altering, or disclosing the contents of this
> message. Aricent accepts no responsibility for loss or damage arising from
> the use of the information transmitted by this email including damage from
> virus."
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org<http://in.mc953.mail.yahoo.com/mc/compose?to=discussion@sipforum.org>
>
>
>
> ------------------------------
> The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with
> Hotmail. Get busy.<http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5>
>
>
>
> ------------------------------
> The New Busy is not the too busy. Combine all your e-mail accounts with
> Hotmail. Get busy.<http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4>
>
> -----Inline Attachment Follows-----
>
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org<http://in.mc953.mail.yahoo.com/mc/compose?to=discussion@sipforum.org>
>
>
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20100601/da396dc9/attachment-0002.html>