I don't see a "Diversion Info" header registered at 
http://www.iana.org/assignments/sip-parameters

If asking about Diversion header, see RFC 5806.

If asking about History-Info header, see RFC 4244 and 
draft-ietf-sipcore-rfc4244bis.



> -----Original Message-----
> From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-
> implementors-boun...@lists.cs.columbia.edu] On Behalf Of pranab sahoo
> Sent: Monday, May 21, 2012 8:45 AM
> To: sip-implementors
> Subject: [Sip-implementors] Need Help
> 
> Hi all,
> 
>      Hope all are doing well.
> I have a doubt on SIP header "Diversion Info".
> Is it compulsory for every 302 response?
> In which condition we can use it?
> It is according to which RFC?
>     Waiting for quick reply.
> Thanks in advance.
> 
> pranab
> Brazil


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