RFC 3601 (rfc3601) - Page 1 of 10
Text String Notation for Dial Sequences and Global Switched Telephone Network (GSTN) / E
Alternative Format: Original Text Document
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