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Text String Notation for Dial Sequences and Global Switched Telephone Network (GSTN) / E.164 Addresses (RFC3601)

IP.com Disclosure Number: IPCOM000019267D
Original Publication Date: 2003-Sep-01
Included in the Prior Art Database: 2003-Sep-09
Document File: 11 page(s) / 19K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Allocchio: AUTHOR

Abstract

This memo describes the full set of notations needed to represent a text string in a Dial Sequence. A Dial Sequence is normally composed of Dual Tone Multi Frequency (DTMF) elements, plus separators and additional "actions" (such as "wait for dialtone", "pause for N secs", etc.) which could be needed to successfully establish the connection with the target service: this includes the cases where subaddresses or DTMF menu navigation apply.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 18% of the total text.

Network Working Group C. Allocchio

Request for Comments: 3601 GARR-Italy

Category: Standards Track September 2003

Text String Notation for Dial Sequences and

Global Switched Telephone Network (GSTN) / E.164 Addresses

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 (2003). All Rights Reserved.

Abstract

This memo describes the full set of notations needed to represent a

text string in a Dial Sequence. A Dial Sequence is normally composed

of Dual Tone Multi Frequency (DTMF) elements, plus separators and

additional "actions" (such as "wait for dialtone", "pause for N

secs", etc.) which could be needed to successfully establish the

connection with the target service: this includes the cases where

subaddresses or DTMF menu navigation apply.

1. Introduction

Since the very first devices interacting with GSTN services appeared,

a need for a unique text string representation of commonly called

telephone numbers, and more generally DTMF sequences and actions, was

foreseen.

This memo describes the full text string representation method. This

specification was explicitly created to provide an easy, unique and

complete reference which MUST be used by all other specifications

needing a text string representation for a Dial Sequence.

The specification was collected directly from Dial Sequence

definitions which are already described in existing Standard Track

specifications (such as [6] [7] [8] [9]), and is fully synchronized

with them. Full compatibility is thus assured, and as a consequence,

this specification results in a compendium of existing definitions.

Allocchio Standards Track [Page 1]

RFC 3601 Dial Sequences and GSTN / E.164 Addresses September 2003

This notation is a fully compatible compendium of existing notations,

and should be used in all specifications needing a text string

representation of a Dial Sequence.

Although the commonly called "telephone numbers" are normally used to

generate a Dial Sequence when establishing a connection, the full

abstract E.164 addresses [2], i.e., the universal addressing on the

Global Switched Telephone Network (GSTN), have further elements which

cannot be dialled. Thus abstract E.164 addresses cannot be fully

converted into a Dial Sequence or fully represented using this

notation.

1.1. Terminology and Syntax conventions

In this document the formal definitions are described using ABNF

syntax, as defined in [3]. This memo also uses some of the "CORE

DEFINITIONS" defined in "APPENDIX A - CORE" of that document.

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",

"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this

document are to...