[SIPForum-discussion] [Sip-implementors] Offer/Answer question

[Manpreet Singh]

Thanks for the response. Someone also pointed to 3261 which says this
flow is invalid. 3264 doesn't speak about it clearly so wanted to get if
its right or not 

-----Original Message-----
From: Paul Kyzivat [mailto:pkyzivat at cisco.com] 
Sent: Friday, April 11, 2008 2:13 PM
To: Manpreet Singh
Cc: discussion at sipforum.org; sip-implementors at lists.cs.columbia.edu
Subject: Re: [Sip-implementors] Offer/Answer question

Your flow is not legal. See
http://www.ietf.org/internet-drafts/draft-ietf-sipping-sip-offeranswer-0
7.txt

Manpreet Singh wrote:
> For an INVITE carrying an offer, does the offer/answer has to complete

> within the INVITE transaction? Can it complete outside the transaction

> but within the same dialog? Call flow is:
>  
> -------------->Invite ( offer )
> <------------180 ( ringing )
> <------------200OK ( empty..no offer )
> ------------->ACK
> <------------Re-Invite ( Answer to offer in first invite )
> -------------->200OK
> <--------------ACK
>  
> M
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