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List:       sip-implementors
Subject:    Re: [Sip-implementors] Offer in reliable provisional response
From:       Sigrid Thijs <sthijs () androme ! com>
Date:       2005-08-31 8:17:43
Message-ID: 431567A7.4090406 () androme ! com
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Suganya wrote:

>Hi all,
>
>This is a query about offer answer model and reliable provisional
>response.
>
>As per RFC 3261, when INVITE (UAC) does not send an offer, offer can be
>made in the 200 Ok (UAS) and the answer can be sent in the ACK.
>
>Is the same possible with reliable provisional responses also?
>
>ie.,
>
>1) when my INVITE does not contain an offer, can the UAS send 
>provisional responses - 180,183 with an offer in it?
>  
>
According to RFC 3262, an offer MUST appear in the first reliable 
message sent back to the UAC if the INVITE
did not contain one.

Kind regards,
Sigrid Thijs

>2) If so, should the same offer be sent in 200 OK also?
>
>Thanks in advance,
>B.Suganya
>
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>  
>


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