Hi! My understanding is as follows.
In RFC 3261, 19.1.1 SIP and SIPS URI Components (5th paragraph on page 150) says, If the user string contains a telephone number formatted as a telephone-subscriber, the user parameter value "phone" SHOULD be present. And also, (2nd paragraph on page 149) says, If the host being addressed can process telephone numbers, for instance, an Internet telephony gateway, a telephone- subscriber field defined in RFC 2806 [9] MAY be used to populate the user field. There are special escaping rules for encoding telephone-subscriber fields in SIP and SIPS URIs described in Section 19.1.2. And now, RFC 2806 was obsoleted by RFC 3966. RFC 3966 shows "The tel URI for Telephone Numbers". Thus, I understand as follows. "user=phone" indicates the user field of SIP-URI is TEL-URI. Best regards, > 25 feb 2009 kl. 09.34 skrev YOSHIKAWA Tomoyuki: > > > IMO, "user=phone" shows user part, xxxx@, indicate TEL-URL. > > Where is this documented? > > /O ------ YOSHIKAWA Tomoyuki <[email protected]> BROADBAND SERVICE DEPARTMENT CONSUMER BUSINESS HEADQUARTERS NTT EAST TEL: +81-3-5359-9681(direct.9433) ; FAX: +81-3-5359-1291 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
