hi ,,

how to write
 *1.*a dns query for the sip proxy server
 *2. lookup component --*  which reads the bindings from the registrar.

nishant

On 11/1/06, [EMAIL PROTECTED] <
[EMAIL PROTECTED]> wrote:
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> Today's Topics:
>
>   1. Re: Query 100rel in re-INVITE (Sarkar, Uttam)
>   2. Re: Query 100rel in re-INVITE (Agrawal, Vishal)
>   3. Re: Register Request ([EMAIL PROTECTED])
>   4. Handling a of re-INVITE before initial ACK is     received
>      (Stephen Paterson)
>   5. Re: Query 100rel in re-INVITE (Paul Kyzivat)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 31 Oct 2006 16:19:58 -0500
> From: "Sarkar, Uttam" <[EMAIL PROTECTED]>
> Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> To: "Sanjay Sinha \(sanjsinh\)" <[EMAIL PROTECTED]>,
>        <[EMAIL PROTECTED]>, <sip-implementors@cs.columbia.edu>
> Message-ID:
>        <[EMAIL PROTECTED]>
> Content-Type: text/plain;       charset="us-ascii"
>
> Thanks,
>
> -----Original Message-----
> From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, October 31, 2006 4:14 PM
> To: Sarkar, Uttam; [EMAIL PROTECTED];
> sip-implementors@cs.columbia.edu
> Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
>
> First Invite in this figure is really a re-Invite. Pl. refer to the text
> accompanying this figure:
>
>     Let's assume, that in the middle of the session, A wishes to change
>   the IP address where it is receiving media.  Figure 3 shows this
>   scenario.
>
>   SDP1: A includes an offer in a re-INVITE (1)
>
>
> >-----Original Message-----
> >From: Sarkar, Uttam [mailto:[EMAIL PROTECTED]
> >Sent: Tuesday, October 31, 2006 3:56 PM
> >To: Sanjay Sinha (sanjsinh); [EMAIL PROTECTED];
> >sip-implementors@cs.columbia.edu
> >Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >
> >Here is that figure. I don't see any re-INVITE at all.
> >Here INVITE (1) had 200 OK (7) and ACK (8).
> >No further re-INVITE.
> >
> >
> >
> >               A                                            B
> >
> >               |                                            |
> >               |-------------(1) INVITE SDP1--------------->|
> >               |                                            |
> >               |<------(2) 183 Session Progress SDP2--------|
> >               |  ***                                 ***   |
> >               |--*R*-----------(3) PRACK-------------*R*-->|
> >               |  *E*                                 *E*   |
> >               |<-*S*-------(4) 200 OK (PRACK)--------*S*---|
> >               |  *E*                                 *E*   |
> >               |  *R*                                 *R*   |
> >               |  *V*                                 *V*   |
> >               |  *A*                                 *A*   |
> >               |  *T*                                 *T*   |
> >               |  *I*                                 *I*   |
> >               |  *O*                                 *O*   |
> >               |  *N*                                 *N*   |
> >               |  ***                                 ***   |
> >               |  ***                                       |
> >               |  ***                                       |
> >               |-------------(5) UPDATE SDP3--------------->|
> >               |                                            |
> >               |<--------(6) 200 OK (UPDATE) SDP4-----------|
> >               |                                            |
> >               |<-----------(7) 200 OK (INVITE)-------------|
> >               |                                            |
> >               |------------------(8) ACK------------------>|
> >               |                                            |
> >               |                                            |
> >
> >
> >-----Original Message-----
> >From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
> >Sent: Tuesday, October 31, 2006 3:48 PM
> >To: Sarkar, Uttam; [EMAIL PROTECTED];
> >sip-implementors@cs.columbia.edu
> >Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >
> >
> >
> >>-----Original Message-----
> >>From: Sarkar, Uttam [mailto:[EMAIL PROTECTED]
> >>Sent: Tuesday, October 31, 2006 3:17 PM
> >>To: Sanjay Sinha (sanjsinh); [EMAIL PROTECTED];
> >>sip-implementors@cs.columbia.edu
> >>Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >>
> >>I see UPDATE is used before sending 200 OK (for INVITE).  I don't see
> >>any re-INVITE scenario here. Am I missing something here?
> >
> >Yes. Pl. see sec. 13.1, Figure 3.
> >
> >
> >>
> >>-----Original Message-----
> >>From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
> >>Sent: Tuesday, October 31, 2006 2:56 PM
> >>To: Sarkar, Uttam; [EMAIL PROTECTED];
> >>sip-implementors@cs.columbia.edu
> >>Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >>
> >>I think RFC 3312 has some examples where 18x is needed for
> >>preconditions in a mid-call session.
> >>
> >>Sanjay.
> >>
> >>>-----Original Message-----
> >>>From: Sarkar, Uttam [mailto:[EMAIL PROTECTED]
> >>>Sent: Tuesday, October 31, 2006 2:05 PM
> >>>To: Sanjay Sinha (sanjsinh); [EMAIL PROTECTED];
> >>>sip-implementors@cs.columbia.edu
> >>>Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >>>
> >>>Whole idea of 100rel is to make sure 18X message is received by the
> >>>other party so that they can be sure of exchnage any media before
> >>>session is established.
> >>>Re-INVITE is for established session.
> >>>Please correct me if I am wrong.
> >>>
> >>>-----Original Message-----
> >>>From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
> >>>Sent: Tuesday, October 31, 2006 1:09 PM
> >>>To: Sarkar, Uttam; [EMAIL PROTECTED];
> >>>sip-implementors@cs.columbia.edu
> >>>Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >>>
> >>>It might be useful for QoS cases.
> >>>
> >>>>-----Original Message-----
> >>>>From: [EMAIL PROTECTED]
> >>>>[mailto:[EMAIL PROTECTED] On Behalf
> >>>Of Sarkar,
> >>>>Uttam
> >>>>Sent: Tuesday, October 31, 2006 11:28 AM
> >>>>To: [EMAIL PROTECTED]; sip-implementors@cs.columbia.edu
> >>>>Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >>>>
> >>>>I still can't understand why 100rel is requiring to a
> >>>re-INVITE (change
> >>>>media from audio to audio and video).
> >>>>In the re-INVITE it will carry the new media. Other endpoint will
> >>>>respond back with final response (like 200 OK or 488 Not Acceptable
> >>>>Here).
> >>>>I can't imagine other end will send 18X with media and send
> >>>PRACK for a
> >>>>session that is already established.
> >>>>
> >>>>Thanks,
> >>>>
> >>>>-----Original Message-----
> >>>>From: [EMAIL PROTECTED]
> >>>>[mailto:[EMAIL PROTECTED] On Behalf Of
> >>>>[EMAIL PROTECTED]
> >>>>Sent: Tuesday, October 31, 2006 10:57 AM
> >>>>To: sip-implementors@cs.columbia.edu
> >>>>Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >>>>
> >>>>   From: "Sarkar, Uttam" <[EMAIL PROTECTED]>
> >>>>
> >>>>   100rel does not make sense in re-INVITE as session is already
> >>>>   established. UAS is expected to send final response
> >>>(2XX/4XX/5XX etc
> >>>>).
> >>>>   It can send 100 trying to stop retransmission of INVITE
> >while it's
> >>>>   preparing the final response.
> >>>>   It's not recommended for UAS to send 1XX response for the
> >>>re-INVITE.
> >>>>
> >>>>One can imagine scenarios where a re-INVITE might not be
> >>>instantaneous,
> >>>>and so 100rel might be a useful mechanism.  For instance, if one
> >>>>endpoint wishes to upgrade an audio call to an
> >audio-and-video call,
> >>>>the other endpoint might want to ask its user before activating the
> >>>>video camera.
> >>>>
> >>>>Dale
> >>>>_______________________________________________
> >>>>Sip-implementors mailing list
> >>>>Sip-implementors@cs.columbia.edu
> >>>>https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> >>>>
> >>>>This email and any attached files herein contain
> >information that is
> >>>>intended only for the use of the individual or entity to whom it is
> >>>>addressed and may contain information that is legally privileged,
> >>>>confidential or otherwise exempt from disclosure under
> >>>applicable laws.
> >>>>If the reader of this message is not the recipient, any disclosure,
> >>>>dissemination, distribution, copying or other use or
> >>>retention of this
> >>>>communication or its substance is prohibited.
> >>>>
> >>>>
> >>>>
> >>>>_______________________________________________
> >>>>Sip-implementors mailing list
> >>>>Sip-implementors@cs.columbia.edu
> >>>>https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> >>>>
> >>>
> >>>This email and any attached files herein contain information that is
> >>>intended only for the use of the individual or entity to whom it is
> >>>addressed and may contain information that is legally privileged,
> >>>confidential or otherwise exempt from disclosure under
> >>applicable laws.
> >>>If the reader of this message is not the recipient, any disclosure,
> >>>dissemination, distribution, copying or other use or
> >>retention of this
> >>>communication or its substance is prohibited.
> >>>
> >>
> >>This email and any attached files herein contain information that is
> >>intended only for the use of the individual or entity to whom it is
> >>addressed and may contain information that is legally privileged,
> >>confidential or otherwise exempt from disclosure under
> >applicable laws.
> >>If the reader of this message is not the recipient, any disclosure,
> >>dissemination, distribution, copying or other use or
> >retention of this
> >>communication or its substance is prohibited.
> >>
> >
> >This email and any attached files herein contain information
> >that is intended only for the use of the individual or entity
> >to whom it is addressed and may contain information that is
> >legally privileged, confidential or otherwise exempt from
> >disclosure under applicable laws. If the reader of this
> >message is not the recipient, any disclosure, dissemination,
> >distribution, copying or other use or retention of this
> >communication or its substance is prohibited.
> >
>
> This email and any attached files herein contain information that is
> intended only for the use of the individual or entity to whom it is
> addressed and may contain information that is legally privileged,
> confidential or otherwise exempt from disclosure under applicable laws. If
> the reader of this message is not the recipient, any disclosure,
> dissemination, distribution, copying or other use or retention of this
> communication or its substance is prohibited.
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 1 Nov 2006 09:21:48 -0600
> From: "Agrawal, Vishal" <[EMAIL PROTECTED]>
> Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> To: "Sarkar, Uttam" <[EMAIL PROTECTED]>,        "Paul Kyzivat"
>        <[EMAIL PROTECTED]>
> Cc: sip-implementors@cs.columbia.edu
> Message-ID:
>        <[EMAIL PROTECTED]>
> Content-Type: text/plain;       charset="us-ascii"
>
> A re-INVITE request allows 18X responses, right?
>
> The statement that re-INVITE MUST always be immediately answered with a
> 200 OK response doesn't seem right. I think if a UAC wants an immediate
> answer then it should send an UPDATE (if supported) request and not a
> re-INVITE. If UPDATE is not supported then the UAC should remove the
> "Supported: 100rel" from the re-INVITE and should ignore the 18X
> responses for re-INVITE.
>
> A re-INVITE seems appropriate when adding/removing new/old media to/from
> the existing session or other cases (as mentioned by others for QoS
> etc).
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Sarkar,
> Uttam
> Sent: Tuesday, October 31, 2006 1:05 PM
> To: Sanjay Sinha (sanjsinh); [EMAIL PROTECTED];
> sip-implementors@cs.columbia.edu
> Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
>
> Whole idea of 100rel is to make sure 18X message is received by the
> other party so that they can be sure of exchnage any media before
> session is established.
> Re-INVITE is for established session.
> Please correct me if I am wrong.
>
> -----Original Message-----
> From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, October 31, 2006 1:09 PM
> To: Sarkar, Uttam; [EMAIL PROTECTED];
> sip-implementors@cs.columbia.edu
> Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
>
> It might be useful for QoS cases.
>
> >-----Original Message-----
> >From: [EMAIL PROTECTED]
> >[mailto:[EMAIL PROTECTED] On Behalf Of
> >Sarkar, Uttam
> >Sent: Tuesday, October 31, 2006 11:28 AM
> >To: [EMAIL PROTECTED]; sip-implementors@cs.columbia.edu
> >Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >
> >I still can't understand why 100rel is requiring to a
> >re-INVITE (change media from audio to audio and video).
> >In the re-INVITE it will carry the new media. Other endpoint
> >will respond back with final response (like 200 OK or 488 Not
> >Acceptable Here).
> >I can't imagine other end will send 18X with media and send
> >PRACK for a session that is already established.
> >
> >Thanks,
> >
> >-----Original Message-----
> >From: [EMAIL PROTECTED]
> >[mailto:[EMAIL PROTECTED] On Behalf Of
> >[EMAIL PROTECTED]
> >Sent: Tuesday, October 31, 2006 10:57 AM
> >To: sip-implementors@cs.columbia.edu
> >Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >
> >   From: "Sarkar, Uttam" <[EMAIL PROTECTED]>
> >
> >   100rel does not make sense in re-INVITE as session is already
> >   established. UAS is expected to send final response
> >(2XX/4XX/5XX etc ).
> >   It can send 100 trying to stop retransmission of INVITE while it's
> >   preparing the final response.
> >   It's not recommended for UAS to send 1XX response for the re-INVITE.
> >
> >One can imagine scenarios where a re-INVITE might not be
> >instantaneous, and so 100rel might be a useful mechanism.  For
> >instance, if one endpoint wishes to upgrade an audio call to
> >an audio-and-video call, the other endpoint might want to ask
> >its user before activating the video camera.
> >
> >Dale
> >_______________________________________________
> >Sip-implementors mailing list
> >Sip-implementors@cs.columbia.edu
> >https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> >
> >This email and any attached files herein contain information
> >that is intended only for the use of the individual or entity
> >to whom it is addressed and may contain information that is
> >legally privileged, confidential or otherwise exempt from
> >disclosure under applicable laws. If the reader of this
> >message is not the recipient, any disclosure, dissemination,
> >distribution, copying or other use or retention of this
> >communication or its substance is prohibited.
> >
> >
> >
> >_______________________________________________
> >Sip-implementors mailing list
> >Sip-implementors@cs.columbia.edu
> >https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> >
>
> This email and any attached files herein contain information that is
> intended only for the use of the individual or entity to whom it is
> addressed and may contain information that is legally privileged,
> confidential or otherwise exempt from disclosure under applicable laws.
> If the reader of this message is not the recipient, any disclosure,
> dissemination, distribution, copying or other use or retention of this
> communication or its substance is prohibited.
>
>
>
> _______________________________________________
> Sip-implementors mailing list
> Sip-implementors@cs.columbia.edu
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 1 Nov 2006 13:28:43 +0530
> From: [EMAIL PROTECTED]
> Subject: Re: [Sip-implementors] Register Request
> To: "Divya Sachdeva" <[EMAIL PROTECTED]>
> Cc: [EMAIL PROTECTED],
>        sip-implementors@cs.columbia.edu
> Message-ID:
>        <
> [EMAIL PROTECTED]
> >
>
> Content-Type: text/plain;       charset="US-ASCII"
>
>
> Communication powers the world.
> Aricent powers communications.
>
> FLEXTRONICS SOFTWARE SYSTEMS IS NOW ARICENT.
>
>
>
> "Divya Sachdeva" <[EMAIL PROTECTED]>
> Sent by: [EMAIL PROTECTED]
> 11/01/2006 01:01 PM
>
>
> To
> sip-implementors@cs.columbia.edu
> cc
>
> Subject
> [Sip-implementors] Register Request
>
>
>
>
>
>
> I hve a question regarding REGISTER request Can one UA register to the
> same registrar with two names in order to
> redirect different users to different ports?
>
> [Balaji Says]
> Yes... U can do it with a single register request. Check the CONTACT
> header in the Register request. You can place the different name in that.
> [Balaji End]
>
> For example register as userA for port 5060 and as userY for port 5051? In
> that case should both registrations have the same call-id?
>
> [Balaji Says]
> I think it is not possible. Since for each register (for any new request)
> new Call-ID is generated. If the same Call-ID repeated then it will
> consider as Retransmission of that Request (As per RFC 3261 Brach-ID
> should be validated to detect the Retransmission ,But as per old RFC 2543
> the Call-ID is used to detect the retramsmission.
> [Balaji End]
>
>
> Thanks and Regards
> Divya
> _______________________________________________
> Sip-implementors mailing list
> Sip-implementors@cs.columbia.edu
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
>
>
>
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>
> ------------------------------
>
> Message: 4
> Date: Wed, 1 Nov 2006 16:40:36 -0000
> From: "Stephen Paterson" <[EMAIL PROTECTED]>
> Subject: [Sip-implementors] Handling a of re-INVITE before initial ACK
>        is      received
> To: "SIP Implementors (E-mail)" <sip-implementors@cs.columbia.edu>
> Message-ID:
>        <[EMAIL PROTECTED]>
> Content-Type: text/plain;       charset="iso-8859-1"
>
> Hi all,
>
> Section 14.2 of RFC 3261 states:
>
> A UAS that receives a second INVITE before it sends the final response to
> a first INVITE with a lower CSeq sequence number on the same dialog MUST
> return a 500 (Server Internal Error) response to the second INVITE and MUST
> include a Retry-After header field with a randomly chosen value of between 0
> and 10 seconds.
> A UAS that receives an INVITE on a dialog while an INVITE it had sent on
> that dialog is in progress MUST return a 491 (Request Pending) response to
> the received INVITE.
>
> Question is: What should the UAS do if it receives a re-INVITE after it
> has sent the final response but before it receives the ACK for the initial
> INVITE?
>
> This situation doesn't fit either of the above two scenarios and I can't
> find anything elsewhere in the RFC to help. Currently our stack ignores the
> second INVITE but my gut feeling is there should be some sort of 4xx
> response, possibly containing a Retry-After header.
>
> Regards
>
> Steve
>
> Steve Paterson
> Software Engineer
> Aculab
> Tel: +44 (0) 1908 273866
> Fax: +44 (0) 1908 273801
> Email: mailto:[EMAIL PROTECTED]
> Website: http://www.aculab.com
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 01 Nov 2006 11:55:20 -0500
> From: Paul Kyzivat <[EMAIL PROTECTED]>
> Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> To: "Agrawal, Vishal" <[EMAIL PROTECTED]>
> Cc: sip-implementors@cs.columbia.edu, "Sarkar,  Uttam"
>        <[EMAIL PROTECTED]>
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> The interesting cases come up in 3pcc. Even when supported, UPDATE
> doesn't in general do the job. What one wants to do is solicit the other
> party to make an offer. This can't be done with UPDATE. There is much
> discussion of this in the 3pcc call flows document.
>
>        Paul
>
> Agrawal, Vishal wrote:
> > A re-INVITE request allows 18X responses, right?
> >
> > The statement that re-INVITE MUST always be immediately answered with a
> > 200 OK response doesn't seem right. I think if a UAC wants an immediate
> > answer then it should send an UPDATE (if supported) request and not a
> > re-INVITE. If UPDATE is not supported then the UAC should remove the
> > "Supported: 100rel" from the re-INVITE and should ignore the 18X
> > responses for re-INVITE.
> >
> > A re-INVITE seems appropriate when adding/removing new/old media to/from
> > the existing session or other cases (as mentioned by others for QoS
> > etc).
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Sarkar,
> > Uttam
> > Sent: Tuesday, October 31, 2006 1:05 PM
> > To: Sanjay Sinha (sanjsinh); [EMAIL PROTECTED];
> > sip-implementors@cs.columbia.edu
> > Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >
> > Whole idea of 100rel is to make sure 18X message is received by the
> > other party so that they can be sure of exchnage any media before
> > session is established.
> > Re-INVITE is for established session.
> > Please correct me if I am wrong.
> >
> > -----Original Message-----
> > From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, October 31, 2006 1:09 PM
> > To: Sarkar, Uttam; [EMAIL PROTECTED];
> > sip-implementors@cs.columbia.edu
> > Subject: RE: [Sip-implementors] Query 100rel in re-INVITE
> >
> > It might be useful for QoS cases.
> >
> >> -----Original Message-----
> >> From: [EMAIL PROTECTED]
> >> [mailto:[EMAIL PROTECTED] On Behalf Of
> >> Sarkar, Uttam
> >> Sent: Tuesday, October 31, 2006 11:28 AM
> >> To: [EMAIL PROTECTED]; sip-implementors@cs.columbia.edu
> >> Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >>
> >> I still can't understand why 100rel is requiring to a
> >> re-INVITE (change media from audio to audio and video).
> >> In the re-INVITE it will carry the new media. Other endpoint
> >> will respond back with final response (like 200 OK or 488 Not
> >> Acceptable Here).
> >> I can't imagine other end will send 18X with media and send
> >> PRACK for a session that is already established.
> >>
> >> Thanks,
> >>
> >> -----Original Message-----
> >> From: [EMAIL PROTECTED]
> >> [mailto:[EMAIL PROTECTED] On Behalf Of
> >> [EMAIL PROTECTED]
> >> Sent: Tuesday, October 31, 2006 10:57 AM
> >> To: sip-implementors@cs.columbia.edu
> >> Subject: Re: [Sip-implementors] Query 100rel in re-INVITE
> >>
> >>   From: "Sarkar, Uttam" <[EMAIL PROTECTED]>
> >>
> >>   100rel does not make sense in re-INVITE as session is already
> >>   established. UAS is expected to send final response
> >> (2XX/4XX/5XX etc ).
> >>   It can send 100 trying to stop retransmission of INVITE while it's
> >>   preparing the final response.
> >>   It's not recommended for UAS to send 1XX response for the re-INVITE.
> >>
> >> One can imagine scenarios where a re-INVITE might not be
> >> instantaneous, and so 100rel might be a useful mechanism.  For
> >> instance, if one endpoint wishes to upgrade an audio call to
> >> an audio-and-video call, the other endpoint might want to ask
> >> its user before activating the video camera.
> >>
> >> Dale
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> End of Sip-implementors Digest, Vol 44, Issue 4
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>



-- 
The history of the world is the history of few men who had faith in
themselves...
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