RFC4395: Guidelines and Registration Procedures for New URI Schemes Registry: http://www.iana.org/assignments/uri-schemes.html Topic: Registration requests for URIs containing telephone numbers The IETF has found that there are many special cases when dealing with telephone numbers as identifiers or locators. Duplicating the special case logic in many different URIs is going to be error- prone as well as costly. The IESG feels that since the Tel URI is quite extensible, extending it is the preferred approach over defining new URIs containing telephone numbers. _______________________________________________ IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce