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The tel URI for Telephone Numbers (RFC3966)

IP.com Disclosure Number: IPCOM000033256D
Original Publication Date: 2004-Dec-01
Included in the Prior Art Database: 2004-Dec-02
Document File: 18 page(s) / 41K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Schulzrinne: AUTHOR

Abstract

This document specifies the URI (Uniform Resource Identifier) scheme "tel". The "tel" URI describes resources identified by telephone numbers. This document obsoletes RFC 2806.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group                                     H. Schulzrinne

Request for Comments: 3966                           Columbia University

Obsoletes: 2806                                            December 2004

Category: Standards Track

                   The tel URI for Telephone Numbers

Status of this Memo

   This document specifies an Internet standards track protocol for the

   Internet community, and requests discussion and suggestions for

   improvements.  Please refer to the current edition of the "Internet

   Official Protocol Standards" (STD 1) for the standardization state

   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   This document specifies the URI (Uniform Resource Identifier) scheme

   "tel".  The "tel" URI describes resources identified by telephone

   numbers.  This document obsoletes RFC 2806.

Table of Contents

   1.   Introduction. . . . . . . . . . . . . . . . . . . . . . . . .  2

   2.   Terminology . . . . . . . . . . . . . . . . . . . . . . . . .  4

   3.   URI Syntax. . . . . . . . . . . . . . . . . . . . . . . . . .  4

   4.   URI Comparisons . . . . . . . . . . . . . . . . . . . . . . .  6

   5.   Phone Numbers and Their Context . . . . . . . . . . . . . . .  6

        5.1.   Phone Numbers. . . . . . . . . . . . . . . . . . . . .  6

               5.1.1. Separators in Phone Numbers . . . . . . . . . .  7

               5.1.2. Alphabetic Characters Corresponding to Digits .  7

               5.1.3. Alphabetic, *, and # Characters as Identifiers.  7

               5.1.4. Global Numbers. . . . . . . . . . . . . . . . .  7

               5.1.5. Local Numbers . . . . . . . . . . . . . . . . .  8

        5.2.   ISDN Subaddresses. . . . . . . . . . . . . . . . . . .  9

        5.3.   Phone Extensions . . . . . . . . . . . . . . . . . . . 10

        5.4.   Other Parameters . . . . . . . . . . . . . . . . . . . 10

   6.   Examples  . . . . . . . . . . . . . . . . . . . . . . . . . . 10

   7.   Rationale . . . . . . . . . . . . . . . . . . . . . . . . . . 11

        7.1.   Why Not Just Put Telephone Numbers in SIP URIs?. . . . 11

        7.2.   Why Not Distinguish between Call Types?. . . . . . . . 11

        7.3.   Why tel. . . . . . . . . . . . . . . . . . . . . . . . 11

        7.4.   Do Not Confuse Numbers with How They Are Dialed. . . . 11

Schulzrinne                 Standards Track                     [Page 1]

RFC 3966                      The tel URI                  December 2004

   8.   Usage of Telephone URIs in...