See RFC 5727; it obsoletes or updates some of the related prior RFCs. > -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of Vineet Menon > Sent: Monday, February 06, 2012 2:42 AM > To: [email protected] > Subject: [Sip-implementors] Custom Header fields > > Hi All, > > Can I add any custom headers to extend SIP, if it doesn't interfere > with > the existing protocol? is there any protocol/procedure to do so? > > Regards, > > Vineet Menon
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