Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Using E.164 numbers with the Session Initiation Protocol (SIP) (RFC3824)

IP.com Disclosure Number: IPCOM000029346D
Original Publication Date: 2004-Jun-01
Included in the Prior Art Database: 2004-Jun-25
Document File: 17 page(s) / 37K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Peterson: AUTHOR [+4]

Abstract

There are a number of contexts in which telephone numbers are employed by Session Initiation Protocol (SIP) applications, many of which can be addressed by ENUM. Although SIP was one of the primary applications for which ENUM was created, there is nevertheless a need to define procedures for integrating ENUM with SIP implementations. This document illustrates how the two protocols might work in concert, and clarifies the authoring and processing of ENUM records for SIP applications. It also provides guidelines for instances in which ENUM, for whatever reason, cannot be used to resolve a telephone number.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group                                        J. Peterson

Request for Comments: 3824                                        H. Liu

Category: Informational                                            J. Yu

                                                                 NeuStar

                                                             B. Campbell

                                                             dynamicsoft

                                                               June 2004

     Using E.164 numbers with the Session Initiation Protocol (SIP)

Status of this Memo

   This memo provides information for the Internet community.  It does

   not specify an Internet standard of any kind.  Distribution of this

   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   There are a number of contexts in which telephone numbers are

   employed by Session Initiation Protocol (SIP) applications, many of

   which can be addressed by ENUM.  Although SIP was one of the primary

   applications for which ENUM was created, there is nevertheless a need

   to define procedures for integrating ENUM with SIP implementations.

   This document illustrates how the two protocols might work in

   concert, and clarifies the authoring and processing of ENUM records

   for SIP applications.  It also provides guidelines for instances in

   which ENUM, for whatever reason, cannot be used to resolve a

   telephone number.

Table of Contents

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

   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3

   3.  Handling Telephone Numbers in SIP  . . . . . . . . . . . . . .  3

   4.  Design Principles  . . . . . . . . . . . . . . . . . . . . . .  5

   5.  Authoring NAPTR Records for SIP  . . . . . . . . . . . . . . .  6

       5.1.  The Service Field  . . . . . . . . . . . . . . . . . . .  6

       5.2.  Creating the Regular Expression: Matching  . . . . . . .  6

       5.3.  Creating the Regular Expression: The URI . . . . . . . .  7

       5.4.  Setting Order and Preference amongst Records . . . . . .  8

       5.5.   Example of a Well-Formed ENUM NAPTR Record Set for SIP.  8

   6.  Processing ENUM Records  . . . . . . . . . . . . . . . . . . .  8

       6.1.  Contending with Multiple SIP records . . . . . . . . . .  8

Peterson, et al.             Informational                      [Page 1]

RFC 3824             ...