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: <vpim-l@ema.org>
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.
Vaudreuil & Parsons Standards Track [Page 1]
RFC 2421 VPIM v2 September 1998
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 Parameters - RCPT TO ...................................29
5.5 ESMTP - SMTP Downgrading .....................................29
6. DIRECTORY ADDRESS RESOLUTION ....................................30
7. IMAP ............................................................30
8. MANAGEMENT PROTOCOLS ............................................30
8.1 Network Management ...........................................31
9. CONFORMANCE REQUIREMENTS ........................................31
10. SECURITY CONSIDERATIONS ........................................32
10.1 General Directive ...........................................32
10.2 Threats and Problems ........................................32
10.3 Security Techniques .........................................33
11. REFERENCES .....................................................33
12. ACKNOWLEDGMENTS ................................................36
13. AUTHORS' ADDRESSES .............................................36
14. APPENDIX A - VPIM REQUIREMENTS SUMMARY .........................37
15. APPENDIX B - EXAMPLE VOICE MESSAGES ............................45
16. APPENDIX C - EXAMPLE ERROR VOICE PROCESSING ERROR CODES ........50
17. APPENDIX D - EXAMPLE VOICE PROCESSING DISPOSITION TYPES ........51
18. APPENDIX E - IANA REGISTRATIONS ................................52
18.1 vCard EMAIL Type Definition for VPIM ........................52
18.2 Voice Content-Disposition Parameter Definition ..............52
19. APPENDIX F - CHANGE HISTORY: RFC 1911 TO THIS DOCUMENT .........54
20. FULL COPYRIGHT NOTICE ..........................................56
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