Inline....

Thanks,
Nataraju A B

> -----Original Message-----
> From: [EMAIL PROTECTED]
[mailto:sip-implementors-
> [EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
> Sent: Thursday, April 12, 2007 4:48 PM
> To: Sonja Belic
> Cc: [EMAIL PROTECTED]; sip-
> [EMAIL PROTECTED]
> Subject: Re: [Sip-implementors] UPDATE and reINVITE
> 
> Hi Sonja,
> 
> I think that which ever request has higher C-Seq number, the contact
in
> that request should be taken as dialogs remote target.
> 
[ABN] may not be true...

> With Regards
> Raghu
> 
> 
> 
> 
> Sonja Belic <[EMAIL PROTECTED]>
> Sent by: [EMAIL PROTECTED]
> 04/12/2007 03:56 PM
> 
> 
> To
> [EMAIL PROTECTED]
> cc
> 
> Subject
> [Sip-implementors] UPDATE and reINVITE
> 
> 
> 
> 
> 
> 
> 
> Hi,
> I have a question regarding UPDATE and reINVITE.
> 
> A                                      B
> 
> INVITE (C1)
> |-------------------------------------->| // C = Contact
> 180
> |<--------------------------------------|
> 200 OK (INVITE)
> |<--------------------------------------|
> ACK
> |-------------------------------------->|
> target
> reINVITE (C2)
> |-------------------------------------->|
> 1xx
> |<--------------------------------------|
> UPDATE (C3)
> |-------------------------------------->|
> 200 OK (UPDATE)
> |<--------------------------------------|
> 200 OK (reINVITE)
> |<--------------------------------------|
> ACK
> |-------------------------------------->|
> 
> 
> Q: Is it OK for UPDATE to be sent when reINVITE isn't actually
> responded with the final response? And what will be the dialog remote
> target C2 or C3? According to RFC3311, I presume that 200 OK to
> reINVITE should have the same Contact as UPDATE or its response.
> 
> 
[ABN] this might lead to violation of offer-answer state machine,
because when you receive the re-invite, it opens O/A FSM. At this point
you are not allowed to open one more OA transaction.

> 
> Best Regards
> Sonja
> 
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