[SIPForum-discussion] Delayed 302 Redirection

[Nitin Kapoor]

Hello Romani,

Yes it is possible to get 302 after the provisional response.

First you can go to RFC 3261, Section 13.1 where you can see the info.

Also its not mandatory that 302 is originating from the UAS, it could have
been a device further upstream that triggered the 302 (or yet another device
that triggered the 183 for that matter).

OR

UAS may have feature, where they called number is matching with a pattern,
then it will first send 183 session in progress than plays an RTP stream and
after wards redirect the UAC with 302 Moved Temporarily

Fur further clarification please send the traces.

Thanks,
Nitin Kapoor

On Thu, Dec 9, 2010 at 7:34 PM, Romaniuk, Maurice (Mo) <romani at avaya.com>wrote:

>  Hi all,
>
> Has anyone worked with delayed Redirection messages ie is it legal for a
> UAS to send a delayed 302 redirect message AFTER provisional responses have
> been received by the UAC? Example:
>
> UAC                     UAS
> Invite--------------------->
>       <--------------------- 100 Trying
>       <--------------------- 183 (with SDP) or 180 Ringing
>       <--------------------- 302 Moved Temp
>
> Cheers!
>
> Mo
>
>
> *Maurice "Mo" Romaniuk* | ACE R&D Support | *Avaya* | 3500 Carling Ave | Ottawa,
> Ontario Canada | 613-356-8381 | romani at avaya.com
>
> avaya.com
>
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