There are a number of headers that may only appear once, including From, To, CSeq. IIRC this is addressed in the text relevant to each one.
Thanks, Paul On 11/9/2010 1:27 PM, SungWoo Lee wrote: > Dear, > > Does 3261 specify the number of a certain header in a SIP message? We know > that multiple Via or Route headers are possible in a message. But what about > From header or To header? It obviously sounds weird, but can we put two > identical From headers(with same tag) in a single SIP invite request? > > Thanks, > > Sungwoo > > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors