http://www.rfc-editor.org/rfc/rfc3762.txt
RFC 3762: Telephone Number Mapping (ENUM) Service Registration for H.323, O. Levin2004-04-01T23:00:00-00:00The H.323 specification defines a means for building multimedia communication services over an arbitrary Packet Based Network, including the Internet. This document registers a Telephone Number Mapping (ENUM) service for H.323 according to specifications and guidelines in RFC 3761. [STANDARDS-TRACK]