URLs for Telephone Calls (RFC2806)

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

A. Vaha-Sipila: AUTHOR

Abstract

This document specifies URL (Uniform Resource Locator) schemes "tel", "fax" and "modem" for specifying the location of a terminal in the phone network and the connection types (modes of operation) that can be used to connect to that entity. This specification covers voice calls (normal phone calls, answering machines and voice messaging systems), facsimile (telefax) calls and data calls, both for POTS and digital/mobile subscribers.

Network Working Group A. Vaha-Sipila

Request for Comments: 2806 Nokia

Category: Standards Track April 2000

URLs for Telephone Calls

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 (2000). All Rights Reserved.

Abstract

This document specifies URL (Uniform Resource Locator) schemes "tel",

"fax" and "modem" for specifying the location of a terminal in the

phone network and the connection types (modes of operation) that can

be used to connect to that entity. This specification covers voice

calls (normal phone calls, answering machines and voice messaging

systems), facsimile (telefax) calls and data calls, both for POTS and

digital/mobile subscribers.

Table of Contents

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

1.1 New URL schemes ............................................ 2

1.2 Formal definitions ......................................... 3

1.3 Requirements ............................................... 3

2. URL schemes for telephone calls ............................. 3

2.1 Applicability .............................................. 3

2.2 "tel" URL scheme ........................................... 4

2.3 "fax" URL scheme ........................................... 6

2.4 "modem" URL scheme ......................................... 6

2.5 Parsing telephone, fax and modem URLs ...................... 7

2.5.1 Call type ................................................ 7

2.5.2 Phone numbers and their scope ............................ 7

2.5.3 Separators in phone numbers .............................. 10

2.5.4 Converting the number to the local numbering scheme ...... 10

2.5.5 Sending post-dial sequence after call setup .............. 10

2.5.6 Pauses in dialing and post-dial sequence ................. 11

2.5.7 ISDN subaddresses ........................................ 11

2.5.8 T.33 subaddresses ........................................ 11

2.5.9 Data call parameters ..................................... 12

2.5.10 Telephony service provider identification ............... 13

2.5.11 Additional parameters .................