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Voice Profile for Internet Mail - version 2 (RFC2421)

IP.com Disclosure Number: IPCOM000002998D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2000-Sep-13

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

G. Vaudreuil: AUTHOR [+2]

Abstract

A class of special-purpose computers has evolved to provide voice messaging services. These machines generally interface to a telephone switch and provide call answering and voice messaging services. Traditionally, messages sent to a non-local machine are transported using analog networking protocols based on DTMF signaling and analog voice playback. As the demand for networking increases, there is a need for a standard high-quality digital protocol to connect these machines. The following document is a profile of the Internet standard MIME and ESMTP protocols for use as a digital voice messaging networking protocol. The profile is referred to as VPIM (Voice Profile for Internet Mail) in this document.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 3% of the total text.

Network Working Group G. Vaudreuil

Request for Comments: 2421 Lucent Technologies

Obsoletes: 1911 G. Parsons

Category: Standards Track Northern Telecom

September 1998

Voice Profile for Internet Mail - version 2

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 (1998). All Rights Reserved.

Overview

This document profiles Internet mail for voice messaging. It

obsoletes RFC 1911 which describes version 1 of the profile. A list

of changes from that document are noted in Appendix F. As well,

Appendix A summarizes the protocol profiles of this version of VPIM.

Please send comments on this document to the EMA VPIM Work Group

mailing list:

Working Group Summary

This profile is not the product of an IETF working group, though

several have reviewed the document. It is instead the product of the

VPIM Work Group of the Electronic Messaging Association (EMA). This

work group, which has representatives from most major voice mail

vendors and several email vendors, has held several interoperability

demonstrations between voice messaging vendors and is currently

promoting VPIM trials and deployment.

Table of Contents

1. ABSTRACT .........................................................3

2. SCOPE ............................................................3

2.1 Voice Messaging System Limitations ............................3

2.2 Design Goals ..................................................4

3. PROTOCOL RESTRICTIONS ............................................5

4. VOICE MESSAGE INTERCHANGE FORMAT .................................6

4.1 Message Addressing Formats ....................................6

4.2 Message Header Fields .........................................9

4.3 Voice Message Content Types ..................................15

4.4 Other Message Content Types ..................................21

4.5 Forwarded Messages ...........................................23

4.6 Reply Messages ...............................................23

4.7 Notification Messages ........................................24

5. MESSAGE TRANSPORT PROTOCOL ......................................24

5.1 ESMTP Commands ...............................................25

5.2 ESMTP Keywords ...............................................27

5.3 ESMTP Parameters - MAIL FROM .................................28

5.4 ESMTP Par...