RFC 3761:The E.164 to Uniform Resource Identifiers...
RFC-Ref

BCP


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... The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14, RFC 2119 [1]. ...


... the following documents; RFC on the Standards Track, Experimental RFC, or as a BCP. IANA ...


... Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. ...


... Internet Society (2004). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. ...


... made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. ...
... on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR ...



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