With an ACK to the 200-INV and you still wait for the 200-PRACK.

The PRACK and INVITE transaction are independent at the transaction  
level
the same way that an INVITE and its CANCEL transactions are independent.
They will all run to normal completion.,

In most cases, there's no ambiguity at all when this happens.

Ambiguity might exist if the PRACK had an offer in it. Paul - is  
there a race
here, or does 100rel clearly restrict what happens if that PRACK has  
an offer
to not put an answer to it in the 200 INV? I think it does but didn't  
find it in
a hurried search.

RjS




On Jul 18, 2007, at 3:12 AM, Jacob Fritz-A17682 wrote:

>
> Hi,
>
> Is it possible to receive a 200 for INVITE, before 200 for PRACK in  
> the
> following scenario?
>
> INVITE      ->
> 183         <-
> PRACK       ->
> 200(INV)    <- (instead of 200 for PRACK)
>
>
> Incase if it happens, how should we respond?
>
> Thanks in advance for your help.
>
> -Fritz.
>
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
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