11 apr 2012 kl. 17:18 skrev Paul Kyzivat: > On 4/11/12 10:37 AM, Alex Balashov wrote: >> Between RFC 3398 and 4694, I am unclear on whether the 'npdi' parameter >> can only appear in the user part of a sip: RURI: >> >> sip:5551212;rn=...;npdi@domain:5060 >> >> or whether it can also appear in the domain part: >> >> sip:5551212@domain:5060;rn=...;npdi >> >> All I can find are references to the idea that these parameters appear >> "within" the Request URI. Are both cases valid? > > npdi is defined as a tel uri parameter, not as a sip uri parameter. It > makes its way into a sip uri based on the embedding of the body of a tel > uri into a sip uri. This results in the parameter appearing in the user > part of the sip uri, as in your first example. Does the username part actually have parameters - or does it become part of the username?
I vaguely remember a Nortel-related draft years ago about parameters in the username part, but can't find it. What's the current state? /O > > The usage in your 2nd example is a mistake. There is no definition of > npdi as a sip uri parameter. But its my understanding that this is a > fairly common mistake - to the point that SBCs are prepared to deal with it. > > Thanks, > Paul > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors --- * Olle E Johansson - o...@edvina.net * Cell phone +46 70 593 68 51, Office +46 8 96 40 20, Sweden _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
