I believe its use is limited to assisting the decoder by indicating that the URI contains a telephone number.
Kedar On 5/11/06, Gupta, Ajay <[EMAIL PROTECTED]> wrote: > > Mike, > > The UAC or the intermediate proxy need not add the "user=phone" > parameter as the registrar uses the canonical form of the URI for > indexing the bindings. For getting the canonical form of sip URI - > > RFC 3261 section 10.3 > "all URI parameters MUST be removed (including the user-param), and any > escaped characters MUST be converted to their unescaped form ..." > > A user could register multiple AORs by sending REGISTER requests. But if > the AORs have the same canonical form then they are not ** different ** > from the registrar's perspective > > I hope it helps > > Ajay > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mike > DOrin > Sent: Thursday, May 11, 2006 12:30 PM > To: [email protected] > Subject: [Sip-implementors] uri parameter -- user > > Looking through a SIP trace with a popular SIP phone, I see the uri > parameter "user=phone" in the From, To, and Contact uri's in a > registration message. > How is this parameter used? > For example, Uri = <sip:[EMAIL PROTECTED];user=phone> > This came in a REGISTER request. > > I assume a call to 201 would not have this uri paremter specified in the > uri. > > So would the proxy, when building the invite message to forward to 201 > have to add this? > > I guess what I am asking is should it be possible for 201 to register > in multiple ways with different users. If it can, how does a remote > user > agent calling 201 know the user to call. > > > Thanks, > Mike > > > --------------------------------- > Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low > rates. > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
