Hi, > > cpc parameter is to be defined as tel uri > > parameter, neither as sip uri parameter > > nor as any header parameter. > > So, I think, the correct answer is putting > > it in the user part of sip uri like: > > > > From: <sip:+17005554141;[EMAIL PROTECTED]>;tag=1928301774 > > > > This issue is explained in detail in the > > section 19.1.6, RFC 3261. > > The sip-uri parameter setting user=phone is also needed. > > <sip:+17005554141;[EMAIL PROTECTED];user=phone> >
In my understanding, user=phone is not necessarily needed. Probably, it is RECOMMENDED to be put in sip URI when user part includes tel URI. Even without user parameter, user part is syntactically correct and can still be interpreted as E.164 number under the designated domain. User parameter MAY be required to be interpreted as E.164, depending on the policies and the implementations. But, I assume, the domain which can handle E.164 number SHOULD be able to recognize and, if it is possible, interpret user part as E.164 even without user=phone. Regards, Takuya -------- Takuya Sawada KDDI Corporation (KDDI) Garden Air Tower, 3-10-10, Iidabashi, Chiyoda-ku, Tokyo 102-8460, Japan Tel: +81-3-6678-2997 Fax: +81-3-6678-0286 [EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
