New parameter for the "tel" URI to support ENUM

Document Type Expired Internet-Draft (individual)
Author Richard Stastny 
Last updated 2004-10-07
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines a new parameter "enumdi" in the "tel" Uniform Resource Identifier (URI) to support the handling of ENUM queries in SIP proxies, H.323 gatekeepers and other VoIP network elements. The presence of the "enumdi" parameter indicates to the VoIP network element receiving an URI containing an E.164 number that an ENUM query as defined in RFC3761 has already been performed on the E.164 number indicated by the previous VoIP network element.


Richard Stastny (

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