RFC 2421
Voice Profile for Internet Mail - version 2
6. Directory Address Resolution It is the responsibility of a VPIM system to provide the fully- qualified domain name (FQDN) of the recipient based on the address entered by the user (if the entered address is not already a FQDN). This would typically be an issue on systems that offered only a telephone user interface. The mapping of the dialed target number to a routeable FQDN address allowing delivery to the destination system can be accomplished through implementation-specific means. To facilitate a local dial-by-name cache, an implementation may wish to populate local directories with the first and last names, as well as the address information extracted from received messages. It is mandated that only address information from vCard attachments to VPIM messages be used to populate such a directory when the vCard is available. Addresses or names parsed from the header fields of VPIM messages SHOULD NOT be used to populate directories as it only provides partial data. Alternatively, bilateral agreements could be made to allow the bulk transfer of vCards between systems. 7. IMAP The use of client/server desktop mailbox protocols like IMAP or POP to retrieve VPIM messages from a IMAP or POP message store is possible without any special modifications to this VPIM specification. Email clients (and web browsers) typically have a table for mapping from MIME type to displaying application. The audio/*, image/tiff and text/directory contents can be configured so that they invoke the correct player/recorder for rendering. In addition with IMAP clients, the first multipart/mixed content (if present) will not appear since it is a generic part. The user instead will be presented with a message that has (for example) audio and image contents. 8. Management Protocols The Internet protocols provide a mechanism for the management of messaging systems, from the management of the physical network through the management of the message queues. SNMP should be supported on a compliant message machine.
8.1 Network Management The digital interface to the VM and the TCP/IP protocols MAY be managed. MIB II MAY be implemented to provide basic statistics and reporting of TCP and IP protocol performance [MIB II]. 9. Conformance Requirements VPIM is a messaging application which must be supported in several environments and be supported on differing devices. These environments include traditional voice processing systems, desktop voice messaging systems, store and forward relays, and protocol translation gateways. In order to accommodate all environments, this document defines two areas of conformance: transport and content. Transport conformant systems will pass VPIM messages in a store and forward manner with assured delivery notifications and without the loss of information. It is expected that most store and forward Internet mail based messaging systems will be VPIM transport compliant. Content conformant systems will generate and interpret VPIM messages. Conformance in the generation of VPIM messages indicates that the restrictions of this profile are honored. Only contents specified in this profile or extensions agreed to by bilateral agreement may be sent. Conformance in the interpretation of VPIM messages indicates that all VPIM content types and constructs can be received; that all mandatory VPIM content types can be decoded and presented to the recipient in an appropriate manner; and that any unrenderable contents result in the appropriate notification. A summary of the compliance requirements is contained in Appendix A. VPIM end systems are expected to be both transport and content conformant. They should generate conforming content, reliably send it to the next hop system, receive a message, decode the message and present it to the user. Voice messaging systems and protocol conversion gateways are considered end systems. Relay systems are expected to be transport compliant in order to receive and send conforming messages. However, they must also create VPIM conforming delivery status notifications in the event of delivery problems.
Desktop Email clients that support VPIM and are expected to be content conformant. Desktop email clients use various protocols and API's for exchanging messages with the local message store and message transport system. While these clients may benefit from VPIM transport capabilities, specific client-server requirements are out- of-scope for this document. 10. Security Considerations 10.1 General Directive This document is a profile of existing Internet mail protocols. To maintain interoperability with Internet mail, any security to be provided should be part of the of the Internet security infrastructure, rather than a new mechanism or some other mechanism outside of the Internet infrastructure. 10.2 Threats and Problems Both Internet mail and voice messaging have their own set of threats and countermeasures. As such, this specification does not create any security issues not already existing in the profiled Internet mail and voice mail protocols themselves. This section attends only to the set of additional threats which ensue from integrating the two services. 10.2.1 Spoofed sender The actual sender of the voice message might not be the same as that specified in the Sender or From header fields of the message content header fields or the MAIL FROM address from the SMTP envelope. In a tightly constrained environment, sufficient physical and software controls may be able to ensure prevention of this problem. In addition, the recognition of the senders voice may provide confidence of the sender's identity irrespective of that specified in Sender or From. It should be recognized that SMTP implementations do not provide inherent authentication of the senders of messages, nor are sites under obligation to provide such authentication. 10.2.2 Unsolicited voice mail Assigning an Internet mail address to a voice mailbox opens the possibility of receiving unsolicited messages (either text or voice mail). Traditionally voice mail systems operated in closed environments and were not susceptible to unknown senders. Voice mail users have a higher expectation of mailbox privacy and may consider such messages as a security breach. Many Internet mail systems are choosing to block all messages from unknown sources in an attempt to
curb this problem. 10.2.3 Message disclosure Users of voice messaging systems have an expectation of a level of message privacy which is higher than the level provided by Internet mail without security enhancements. This expectation of privacy by users SHOULD be preserved as much as possible. 10.3 Security Techniques Sufficient physical and software control may be acceptable in constrained environments. Further, the profile specified in this document does not in any way preclude the use of any Internet object or channel security protocol to encrypt, authenticate, or non- repudiate the messages. 11. REFERENCES [8BIT] Klensin, J., Freed, N., Rose, M., Stefferud, E., and D. Crocker, "SMTP Service Extension for 8bit-MIMEtransport", RFC 1426, February 1993. [ADPCM] Vaudreuil, G., and G. Parsons, "Toll Quality Voice - 32 kbit/s ADPCM: MIME Sub-type Registration", RFC 2422, September 1998. [AMIS-A] Audio Messaging Interchange Specifications (AMIS) - Analog Protocol Version 1, Issue 2, February 1992. [AMIS-D] Audio Messaging Interchange Specifications (AMIS) - Digital Protocol Version 1, Issue 3 August 1993. [BINARY] Vaudreuil, G., "SMTP Service Extensions for Transmission of Large and Binary MIME Messages", RFC 1830, October 1995. [CODES] Vaudreuil, G., "Enhanced Mail System Status Codes", RFC 1893, January 1996. [MIMEDIR] Howes, T., Smith, M., and F. Dawson, "A MIME Content-Type for Directory Information", RFC 2425, September 1998. [DISP] Troost, R., and S. Dorner, "Communicating Presentation Information in Internet Messages: The Content-Disposition Header", RFC 2183, August 1997. [DNS1] Mockapetris, P., "Domain names - implementation and specification", STD 13, RFC 1035, November 1987.
[DNS2] Mockapetris, P., "Domain names - concepts and facilities", STD 13, RFC 1034, November 1987. [DRPT] Moore, K., "SMTP Service Extensions for Delivery Status Notifications", RFC 1891, January 1996. [DSN] Moore, K., and G. Vaudreuil, "An Extensible Message Format for Delivery Status Notifications", RFC 1894, January 1996. [DUR] Vaudreuil, G., and G. Parsons, "Content Duration MIME Header Definition", RFC 2424, September 1998. [E164] CCITT Recommendation E.164 (1991), Telephone Network and ISDN Operation, Numbering, Routing and Mobile Service - Numbering Plan for the ISDN Era. [ESMTP] Klensin, J., Freed, N., Rose, M., Stefferud, E., and D. Crocker, "SMTP Service Extensions", RFC 1869, November 1995. [G726] CCITT Recommendation G.726 (1990), General Aspects of Digital Transmission Systems, Terminal Equipment - 40, 32, 24,16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM). [HOSTREQ] Braden, R., "Requirements for Internet Hosts -- Application and Support", STD 3, RFC 1123, October 1989. [LANG] Alvestrand, H., "Tags for the Identification of Languages", RFC 1766, March 1995. [MDN] Fajman, R., "An Extensible Message Format for Message Disposition Notifications", RFC 2298, March 1998. [MIB II] Rose, M., "Management Information Base for Network Management of TCP/IP-based internets: MIB-II", RFC 1158, May 1990. [MIME1] Freed, N., and N. Borenstein, "Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies", RFC 2045, November 1996. [MIME2] Freed, N., and N. Borenstein, "Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types", RFC 2046, November 1996. [MIME3] Moore, K., "Multipurpose Internet Mail Extensions (MIME) Part Three: Message Header Extensions for Non-ASCII Text", RFC 2047, November 1996.
[MIME4] Freed, N., Klensin, J., and J. Postel, "Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures", RFC 2048, November 1996. [MIME5] Freed, N., and N. Borenstein, "Multipurpose Internet Mail Extensions (MIME) Part Five: Conformance Criteria and Examples", RFC 2049, November 1996. [PIPE] Freed, N., and A. Cargille, "SMTP Service Extension for Command Pipelining", RFC 1854, October 1995. [REPORT] Vaudreuil, G., "The Multipart/Report Content Type for the Reporting of Mail System Administrative Messages", RFC 1892, January 1996. [REQ] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC822] Crocker, D., "Standard for the Format of ARPA Internet Text Messages", STD 11, RFC 822, August 1982. [SIZE] Klensin, J., Freed, N., and K. Moore, "SMTP Service Extensions for Message Size Declaration", RFC 1870, November 1995. [SMTP] Postel, J., "Simple Mail Transfer Protocol", STD 10, RFC 821, August 1982. [STATUS] Freed, N., "SMTP Service Extension for Returning Enhanced Error Codes", RFC 2034, October 1996. [TIFF-F] Parsons, G., and J. Rafferty, "Tag Image File Format: Application F", RFC 2306, March 1998. [TIFFREG] Parsons, G., Rafferty, J., and S. Zilles, "Tag Image File Format: image/tiff - MIME sub-type registraion", RFC 2302, March 1998. [V-MSG] Vaudreuil, G., and G. Parsons, "VPIM Voice Message: MIME Sub-type Registration", RFC 2423, September 1998. [VCARD] Dawson, F., and T. Howes, "vCard MIME Directory Profile", RFC 2426, September 1998. [VPIM1] Vaudreuil, G., "Voice Profile for Internet Mail", RFC 1911, February 1996. [X.400] Hardcastle-Kille, S., "Mapping between X.400(1988) / ISO 10021 and RFC 822", RFC 1327, May 1992.
12. Acknowledgments The authors would like to offer a special thanks to the Electronic Messaging Association (EMA), especially the members of the Voice Messaging Committee and the VPIM Work Group, for their support of the VPIM specification and the efforts they have made to ensure its success. The EMA hosts the VPIM web page at http://www.ema.org/vpim. 13. Authors' Addresses Glenn W. Parsons Northern Telecom P.O. Box 3511, Station C Ottawa, ON K1Y 4H7 Canada Phone: +1-613-763-7582 Fax: +1-613-763-4461 EMail: Glenn.Parsons@Nortel.ca Gregory M. Vaudreuil Lucent Technologies, Octel Messaging Division 17080 Dallas Parkway Dallas, TX 75248-1905 United States Phone/Fax: +1-972-733-2722 EMail: GregV@Lucent.Com
14. Appendix A - VPIM Requirements Summary The following table summarizes the profile of VPIM version 2 detailed in this document. Since in many cases it is not possible to simplify the qualifications for supporting each feature this appendix is informative. The reader is recommended to read the complete explanation of each feature in the referenced section. The text in the previous sections shall be deemed authoritative if any item in this table is ambiguous. The conformance table is separated into various columns: Feature - name of protocol feature (note that the indenting indicates a hierarchy of conformance, i.e. the conformance of a lower feature is only relevant if there is conformance to the higher feature) Section - reference section in main text of this document Area - conformance area to which each feature applies: C - content T - transport Status - whether the feature is mandatory, optional, or prohibited. The key words used in this table are to be interpreted as described in [REQ], though the following list gives a quick overview of the different degrees of feature conformance: Must - mandatory Should - required in the absence of a compelling need to omit. May - optional Should not - prohibited in the absence of a compelling need. Must not - prohibited Footnote - special comment about conformance for a particular feature
VPIM version 2 Conformance
| | | | |S| |
| | | | | |H| |F
| | | | | |O|M|o
| | | |S| |U|U|o
| | | |H| |L|S|t
| |A|M|O| |D|T|n
| |R|U|U|M| | |o
| |E|S|L|A|N|N|t
| |A|T|D|Y|O|O|t
FEATURE |SECTION | | | | |T|T|e
-------------------------------------------|----------|-|-|-|-|-|-|-
| | | | | | | |
Message Addressing Formats: | | | | | | | |
Use DNS host names |4.1 |C|x| | | | |
Use only numbers in mailbox IDs |4.1.1 |C| |x| | | |
Use alpha-numeric mailbox IDs |4.1.1 |C| | |x| | |
Support of postmaster@domain |4.1.2 |C|x| | | | |
Support of non-mail-user@domain |4.1.2 |C| |x| | | |
Support of distribution lists |4.1.3 |C| |x| | | |
| | | | | | | |
Message Header Fields: | | | | | | | |
Encoding outbound messages | | | | | | | |
From |4.2.1 |C|x| | | | |
Addition of text name |4.2.1 |C| |x| | | |
To |4.2.2 |C|x| | | | |1
cc |4.2.3 |C| |x| | | |1
Date |4.2.4 |C|x| | | | |
Sender |4.2.5 |C| | |x| | |
Return-Path |4.2.6 |C| | |x| | |
Message-id |4.2.7 |C|x| | | | |
Reply-To |4.2.8 |C| | | |x| |
Received |4.2.9 |C|x| | | | |
MIME Version: 1.0 (Voice 2.0) |4.2.10 |C| |x| | | |
Content-Type |4.2.11 |C|x| | | | |
Content-Transfer-Encoding |4.2.12 |C|x| | | | |
Sensitivity |4.2.13 |C| | |x| | |
Importance |4.2.14 |C| | |x| | |
Subject |4.2.15 |C| |x| | | |
Disposition-notification-to |4.2.16 |C| | |x| | |
Disposition-notification-options |4.2.17 |C| | |x| | |
Other Headers |4.2 |C| | |x| | |
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| |A|T|D|Y|O|O|t
FEATURE |SECTION | | | | |T|T|e
-------------------------------------------|----------|-|-|-|-|-|-|-
Detection & Decoding inbound messages | | | | | | | |
From |4.2.1 |C|x| | | | |
Present text personal name |4.2.1 |C| | |x| | |
To |4.2.2 |C|x| | | | |
cc |4.2.3 |C| | |x| | |
Date |4.2.4 |C|x| | | | |
Conversion of Date to local time |4.2.4 |C| |x| | | |
Sender |4.2.5 |C| | |x| | |
Return-Path |4.2.6 |C| | |x| | |
Message ID |4.2.7 |C|x| | | | |
Reply-To |4.2.8 |C| |x| | | |
Received |4.2.9 |C| | |x| | |
MIME Version: 1.0 (Voice 2.0) |4.2.10 |C| |x| | | |
Content Type |4.2.11 |C|x| | | | |
Content-Transfer-Encoding |4.2.12 |C|x| | | | |
Sensitivity |4.2.13 |C|x| | | | |2
Importance |4.2.14 |C| | |x| | |
Subject |4.2.15 |C| | |x| | |
Disposition-notification-to |4.2.16 |C| | |x| | |
Disposition-notification-options |4.2.17 |C| | |x| | |
Other Headers |4.2 |C|x| | | | |3
| | | | | | | |
Message Content Encoding: | | | | | | | |
Encoding outbound audio/fax contents | | | | | | | |
7BIT |4.3 |C| | | | |x|
8BIT |4.3 |C| | | | |x|
Quoted Printable |4.3 |C| | | | |x|
Base64 |4.3 |C|x| | | | |4
Binary |4.3 |C| |x| | | |5
Detection & decoding inbound messages | | | | | | | |
7BIT |4.3 |C|x| | | | |
8BIT |4.3 |C|x| | | | |
Quoted Printable |4.3 |C|x| | | | |
Base64 |4.3 |C|x| | | | |
Binary |4.3 |C|x| | | | |5
| | | | | | | |
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FEATURE |SECTION | | | | |T|T|e
-------------------------------------------|----------|-|-|-|-|-|-|-
Message Content Types: | | | | | | | |
Inclusion in outbound messages | | | | | | | |
Multipart/Voice-Message |4.3.1 |C|x| | | | |
Message/RFC822 |4.3.2 |C| | |x| | |
Text/Directory |4.3.3 |C| |x| | | |
include TEL, EMAIL, VERSION |4.3.3 |C|x| | | | |
include ROLE, SOUND, N, REV |4.3.3 |C| |x| | | |
only one voice type per level |4.3.3 |C|x| | | | |
Audio/32KADPCM |4.3.4 |C|x| | | | |
Content-Description |4.3.4.1 |C| | |x| | |
Content-Disposition |4.3.4.2 |C|x| | | | |
Content-Duration |4.3.4.3 |C| | |x| | |
Content-Langauge |4.3.4.4 |C| | |x| | |
Image/tiff; application=faxbw |4.3.5 |C| | |x| | |
Audio/* or Image/* (other encodings) |4.3.6 |C| | |x| | |
Multipart/Mixed |4.4.1 |C| | |x| | |
Text/plain |4.4.2 |C| | | |x| |
Multipart/Report |4.4.3 |C|x| | | | |
human-readable part is voice |4.4.3 |C| |x| | | |
human-readable part is text |4.4.3 |C| | |x| | |
Message/delivery-status |4.4.4 |C|x| | | | |
Message/disposition-notification |4.4.5 |C| |x| | | |
Other contents |4.4 |C| | | |x| |6
| | | | | | | |
Detection & decoding in inbound messages | | | | | | | |
Multipart/Voice-Message |4.3.1 |C|x| | | | |
Message/RFC822 |4.3.2 |C|x| | | | |
Text/Directory |4.3.3 |C| |x| | | |
recognize TEL, EMAIL, VERSION |4.3.3 |C|x| | | | |
recognize ROLE, SOUND, N, REV |4.3.3 |C| |x| | | |
Audio/32KADPCM |4.3.4 |C|x| | | | |
Content-Description |4.3.4.1 |C| | |x| | |
Content-Disposition |4.3.4.2 |C| |x| | | |
Content-Duration |4.3.4.3 |C| | |x| | |
Content-Langauge |4.3.4.4 |C| | |x| | |
Image/tiff; application=faxbw |4.3.5 |C| |x| | | |
send NDN if unable to render |4.3.5 |C|x| | | | |7
Audio/* or Image/* (other encodings) |4.3.6 |C| | |x| | |
Multipart/Mixed |4.4.1 |C|x| | | | |
Text/plain |4.4.2 |C|x| | | | |
send NDN if unable to render |4.4.2 |C|x| | | | |
| | | | | |S| |
| | | | | |H| |F
| | | | | |O|M|o
| | | |S| |U|U|o
| | | |H| |L|S|t
| |A|M|O| |D|T|n
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FEATURE |SECTION | | | | |T|T|e
------------------------------------------|-----------|-|-|-|-|-|-|-
| | | | | | | |
Multipart/Report |4.4.3 |C|x| | | | |
human-readable part is voice |4.4.3 |C| |x| | | |
human-readable part is text |4.4.3 |C|x| | | | |
Message/delivery-status |4.4.4 |C|x| | | | |
Message/disposition-notification |4.4.5 |C| |x| | | |
Other contents |4.4 |C| | | |x| |6
send NDN if unable to render |4.4 |C| |x| | | |
| | | | | | | |
Forwarded Messages | | | | | | | |
use Message/RFC822 construct |4.5 |C| |x| | | |
simulate headers if none available |4.5 |C| |x| | | |
| | | | | | | |
Reply Messages | | | | | | | |
send to Reply-to, else From address |4.6 |C|x| | | | |
do not send to non-mail-user |4.6 |C|x| | | | |
| | | | | | | |
Notifications | | | | | | | |
use multipart/report format |4.7 |C|x| | | | |
always send error on non-delivery |4.7 |C| |x| | | |
| | | | | | | |
Message Transport Protocol: | | | | | | | |
ESMTP Commands | | | | | | | |
HELO |5.1.1 |T|x| | | | |
MAIL FROM |5.1.2 |T|x| | | | |
support null address |5.1.2 |T|x| | | | |
RCPT TO |5.1.3 |T|x| | | | |
DATA |5.1.4 |T|x| | | | |
TURN |5.1.5 |T| | | | |x|
QUIT |5.1.6 |T|x| | | | |
RSET |5.1.7 |T|x| | | | |
VRFY |5.1.8 |T| | |x| | |
EHLO |5.1.9 |T|x| | | | |
BDAT |5.1.10 |T| | |x| | |5
| | | | |S| |
| | | | | |H| |F
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| | | |H| |L|S|t
| |A|M|O| |D|T|n
| |R|U|U|M| | |o
| |E|S|L|A|N|N|t
| |A|T|D|Y|O|O|t
FEATURE |SECTION | | | | |T|T|e
-------------------------------------------|----------|-|-|-|-|-|-|-
| | | | | | | |
ESMTP Keywords & Parameters | | | | | | | |
PIPELINING |5.2.1 |T| |x| | | |
SIZE |5.2.2 |T|x| | | | |
CHUNKING |5.2.3 |T| | |x| | |
BINARYMIME |5.2.4,5.3.1|T| | |x| | |
DSN |5.2.5 |T|x| | | | |
ENHANCEDSTATUSCODES |5.2.6 |T| |x| | | |
RET |5.3.2 |T| |x| | | |
ENVID |5.3.3 |T| | |x| | |
NOTIFY |5.4.1 |T|x| | | | |
ORCPT |5.4.2 |T| | |x| | |
| | | | | | | |
ESMTP-SMTP Downgrading | | | | | | | |
send delivery report upon downgrade |
| | | | | | | |
Directory Address Resolution | | | | | | | |
provide facility to resolve addresses |6 |C| |x| | | |
use vCards to populate local directory |6 |C| |x| | | |8
use headers to populate local directory |6 |C| | | |x| |
| | | | | | | |
Management Protocols: | | | | | | | |
Network management |8.1 |T| ||x| | |
-------------------------------------------|----------|-|-|-|-|-|-|-
Footnotes:
1. MUST NOT include if all recipients are not known or resolvable.
2. If a sensitive message is received by a system that does not
support sensitivity, then it MUST be returned to the originator
with an appropriate error notification. Also, a received
sensitive message MUST NOT be forwarded to anyone.
3. If the addtional header fields are not understood they MAY be
ignored
4. When binary transport is not available
5. When binary transport is available
6. Other un-profiled contents must only be sent by bilateral
agreement.
7. If the content cannot be presented in some form, the entire
message MUST be returned with a negative delivery status
notification.
8. When the vCard is present in a message
15. Appendix B - Example Voice Messages The following message is a full-featured message addressed to two recipients. The message includes the sender's spoken name and a short speech segment. The message is marked as important and private. To: +19725551212@vm1.mycompany.com To: +16135551234@VM1.mycompany.com From: "Parsons, Glenn" <12145551234@VM2.mycompany.com> Date: Mon, 26 Aug 93 10:20:20 -0700 (CDT) MIME-Version: 1.0 (Voice 2.0) Content-type: Multipart/Voice-Message; Version=2.0; Boundary="MessageBoundary" Content-Transfer-Encoding: 7bit Message-ID: 123456789@VM2.mycompany.com Sensitivity: Private Importance: High --MessageBoundary Content-type: Audio/32KADPCM Content-Transfer-Encoding: Base64 Content-Disposition: inline; voice=Originator-Spoken-Name Content-Language: en-US Content-ID: part1@VM2-4321 glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadasssdasddasdasd (This is a sample of the base-64 Spoken Name data) fgdhgddlkgpokpeowrit09== --MessageBoundary Content-type: Audio/32KADPCM Content-Transfer-Encoding: Base64 Content-Description: Brand X Voice Message Content-Disposition: inline; voice=Voice-Message; filename=msg1.726 Content-Duration: 25 iIiIiIjMzN3czdze3s7d7fwfHhcvESJVe/4yEhLz8/FOQjVFRERCESL/zqrq (This is a sample of the base64 message data) zb8tFdLTQt1PXj u7wjOyRhws+krdns7Rju0t4tLF7cE0K0MxOTOnRW/Pn30c8uHi9== --MessageBoundary Content-type: text/directory; charset=us-ascii; profile=vCard Content-Transfer-Encoding: 7bit BEGIN:VCARD N:Parsons;Glenn;;Mr.; EMAIL;TYPE=INTERNET:+12145551234@VM2.mycompany.com TEL:+1-217-555-1234
SOUND;TYPE=32KADPCM;ENCODING=URI: CID:<part1@VM2-4321>
REV:19951031T222710Z
VERSION: 3.0
END:VCARD
--MessageBoundary_
The following message is a forwarded single segment voice. Both the
forwarded message and the forwarding message contain VCARDs with
spoken names.
To: +12145551212@vm1.mycompany.com
From: "Vaudreuil, Greg" <+19725552345@VM2.mycompany.com>
Date: Mon, 26 Aug 93 10:20:20 -0700 (CDT)
MIME-Version: 1.0 (Voice 2.0)
Content-type: Multipart/Voice-Message; Version=2.0;
Boundary="MessageBoundary"
Content-Transfer-Encoding: 7bit
Message-ID: ABCD-123456789@VM2.mycompany.com
--MessageBoundary
Content-type: Audio/32KADPCM
Content-Transfer-Encoding: Base64
Content-Disposition: inline; voice=Originator-Spoken-Name
Content-Language: en-US
Content-ID: part3@VM2-4321
glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadasssdasddasdasd
(This is a sample of the base-64 Spoken Name data)
fgdhgd dlkgpokpeowrit09==
--MessageBoundary
Content-type: Audio/32KADPCM
Content-Description: Forwarded Message Annotation
Content-Disposition: inline; voice=Voice-Message
Content-Transfer-Encoding: Base64
glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadasssdasddasdasd
(This is the voiced introductory remarks encoded in base64)
jrgoij3o45itj09fiuvdkjgWlakgQ93ijkpokfpgokQ90gQ5tkjpokfgW
dlkgpokpeowrit09==
--MessageBoundary
Content-type: Message/RFC822
Content-Transfer-Encoding: 7bit
To: +19725552345@VM2.mycompany.com
From: "Parsons, Glenn, W." <+16135551234@VM1.mycompany.com>
Date: Mon, 26 Aug 93 8:23:10 -0500 (EST)
Content-type: Multipart/Voice-Message; Version=2.0;
Boundary="MessageBoundary2"
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0 (Voice 2.0)
--MessageBoundary2
Content-type: Audio/32KADPCM
Content-Transfer-Encoding: Base64
Content-Disposition: inline; voice=Originator-Spoken-Name
Content-Language: en-US
Content-ID: part6@VM2-4321
glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadasssdasddasdasd
(This is a sample of the base-64 Spoken Name data) fgdhgd
dlkgpokpeowrit09==
--MessageBoundary2
Content-type: Audio/32KADPCM
Content-Disposition: inline; voice=Voice-Message
Content-Transfer-Encoding: Base64
glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadasssdasddasdasd
(This is the original message audio data) fgwersdfmniwrjj
jrgoij3o45itj09fiuvdkjgWlakgQ93ijkpokfpgokQ90gQ5tkjpokfgW
dlkgpokpeowrit09==
--MessageBoundary2
Content-type: text/directory; charset=us-ascii
Content-Transfer-Encoding: 7bit
BEGIN:VCARD
N:Parsons;Glenn;W;Mr.;
EMAIL;TYPE=INTERNET:+16135551234@VM2.mycompany.com
TEL:+1-613-555-1234
SOUND;TYPE=32KADPCM;ENCODING=URI: CID:<part6@VM2-4321>
REV:19951031T222710Z
END:VCARD
--MessageBoundary2--
--MessageBoundary
Content-type: text/directory; charset=us-ascii
Content-Transfer-Encoding: 7bit
BEGIN:VCARD
N:Vaudreuil;Greg;;Mr.;
SOUND;TYPE=32KADPCM;ENCODING=URI: CID:<part3@VM2-4321>
EMAIL;TYPE=INTERNET,VPIM:+19725552345@VM2.mycompany.com
TEL:+1-972-555-2345
REV:19951031T222710Z
VERSION: 3.0
END:VCARD
--MessageBoundary--
The following example is for a message returned to the sender by a
VPIM gateway at VM1.company.com for a mailbox which does not exist.
Date: Thu, 7 Jul 1994 17:16:05 -0400
From: Mail Delivery Subsystem <MAILER-DAEMON@vm.company.com>
Message-Id: <199407072116.RAA14128@vm1.company.com>
Subject: Returned voice message
To: 2175552345@VM2.mycompany.com
MIME-Version: 1.0 (Voice 2.0)
Content-Type: multipart/report; report-type=delivery-status;
boundary="RAA14128.773615765/VM1.COMPANY.COM"
--RAA14128.773615765/VM1.COMPANY.COM
Content-type: Audio/32KADPCM
Content-Description: Spoken Delivery Status Notification
Content-Disposition: inline; voice= Voice-Message-Notification
Content-Transfer-Encoding: Base64
glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadadffsssddasdasd
(This is a voiced description of the error in base64)
jrgoij3o45itj09fiuvdkjgWlakgQ93ijkpokfpgokQ90gdffkjpokfgW
dlkgpokpeowrit09==
--RAA14128.773615765/VM1.COMPANY.COM
Content-type: message/delivery-status
Reporting-MTA: dns; vm1.company.com
Original-Recipient: rfc822; 2145551234@VM1.mycompany.com
Final-Recipient: rfc822; 2145551234@VM1.mycompany.com
Action: failed
Status: 5.1.1 (User does not exist)
Diagnostic-Code: smtp; 550 Mailbox not found
Last-Attempt-Date: Thu, 7 Jul 1994 17:15:49 -0400
--RAA14128.773615765/VM1.COMPANY.COM
content-type: message/rfc822
[original VPIM message goes here]
--RAA14128.773615765/VM1.COMPANY.COM--
The following example is for a receipt notification sent to the
original sender for a message which has been played. This
delivered VPIM message was received by a corporate gateway and
relayed to a unified mailbox.
Date: Thu, 7 Jul 1994 17:16:05 -0400
From: "Greg Vaudreuil" <22722@vm.company.com>
Message-Id: <199407072116.RAA14128@exchange.company.com>
Subject: Voice message played
To: 2175552345@VM2.mycompany.com
MIME-Version: 1.0 (Voice 2.0)
Content-Type: multipart/report;
Report-type=disposition-notification;
Boundary="RAA14128.773615765/EXCHANGE.COMPANY.COM"
--RAA14128.773615765/EXCHANGE.COMPANY.COM
Content-type: Audio/32KADPCM
Content-Description: Spoken Disposition Notification
Content-Disposition: inline; voice= Voice-Message-Notification
Content-Transfer-Encoding: Base64
glslfdslsertiflkTfpgkTportrpkTpfgTpoiTpdadadffsssddasdasd
(Voiced description of the disposition action in base64)
jrgoij3o45itj09fiuvdkjgWlakgQ93ijkpokfpgokQ90gdffkjpokfgW
dlkgpokpeowrit09==
--RAA14128.773615765/EXCHANGE.COMPANY.COM
Content-type: message/disposition-notification
Reporting-UA: gregs-laptop.dallas.company.com (Unified FooMail 3.0)
Original-Recipient: rfc822;22722@vm.company.com
Final-Recipient: rfc822;Greg.Vaudreuil@foomail.company.com
Original-Message-ID: <199509192301.12345@vm2.mycompany.com >
Disposition: manual-action/MDN-sent-automatically; displayed
--RAA14128.773615765/EXCHANGE.COMPANY.COM
Content-type: message/rfc822
[original VPIM message goes here]
--RAA14128.773615765/EXCHANGE.COMPANY.COM--
16. Appendix C - Example Error Voice Processing Error Codes The following common voice processing errors and their corresponding status codes are given as examples. Text after the error codes are intended only for reference to describe the error code. Implementations should provide implementation specific informative comments after the error code rather than the text below. Error condition RFC 1893 Error codes ----------------------------- -------------------------------- Analog delivery failed 4.4.0 Persistent connection error because remote system is busy - other Analog delivery failed 4.4.1 Persistent protocol error because remote system is - no answer from host ring-no-answer Remote system did not answer 5.5.5 Permanent protocol error AMIS-Analog handshake ("D" in - wrong version response to "C" at connect time) Mailbox does not exist 5.1.1 Permanent mailbox error - does not exist Mailbox full or over quota 4.2.2 Persistent mailbox error - full Disk full 4.3.1 Persistent system error - full Command out of sequence 5.5.1 Permanent protocol error - invalid command Frame Error 5.5.2 Permanent protocol error - syntax error Mailbox does not support FAX 5.6.1 Permanent media error - not supported Mailbox does not support TEXT 5.6.1 Permanent media error - not supported Sender is not authorized 5.7.1 Permanent security error - sender not authorized
Message marked private, but 5.3.3 Permanent system error system is not private capable - not feature capable 17. Appendix D - Example Voice Processing Disposition Types The following common voice processing disposition conditions and their corresponding MDN Disposition (which contains the disposition mode, type and modifier, if applicable) are given as examples. Implementers should refer to [MDN] for a full description of the format of message disposition notifications. Notification event MDN Disposition mode, type & modifier ------------------------------ ------------------------------------- Message played by recipient, manual-action/MDN-sent-automatically; receipt automatically returned displayed Message deleted from mailbox manual-action/MDN-sent-automatically; by user without listening deleted Message cleared when mailbox manual-action/MDN-sent-automatically; deleted by admin deleted/mailbox-terminated Message automatically deleted automatic-action/ when older than administrator MDN-sent-automatically; deleted/ set threshold expired Message processed, however manual-action/MDN-sent-automatically; audio encoding unknown - processed/error unable to play to user Error: unknown audio encoding
18. Appendix E - IANA Registrations 18.1 vCard EMAIL Type Definition for VPIM To: ietf-mime-directory@imc.org Subject: Registration of new parameter for text/directory MIME type EMAIL Type name: EMAIL Type purpose: To specify the electronic mail address for communication with the object the vCard represents (defined in [VCARD]). Type encoding: 8bit Type value: A single text value. Type special notes: The type may include the type parameter "TYPE" to specify the format or preference of the electronic mail address. The TYPE parameter values previously defined include: "internet" to indicate an Internet addressing type, "x400" to indicate a X.400 addressing type and "pref" to indicate a preferred-use email address when more than one is specified. The value of "vpim" is defined to indicate that the address specified supports VPIM messages. Other IANA registered address type may also be specified. The default email type is "internet". A non-standard value may also be specified. Type example: EMAIL;TYPE=internet,vpim:jqpublic@xyz.dom1.com 18.2 Voice Content-Disposition Parameter Definition To: IANA@IANA.ORG Subject: Registration of new Content-Disposition parameter Content-Disposition parameter name: voice Allowable values for this parameter: Voice-Message - the primary voice message, Voice-Message-Notification - a spoken delivery notification or spoken disposition notification, Originator-Spoken-Name - the spoken name of the originator,
Recipient-Spoken-Name - the spoken name of the recipient if
available to the originator and present if there is ONLY one
recipient,
Spoken-Subject- the spoken subject of the message, typically
spoken by the originator
Description:
In order to distinguish between the various types of audio contents
in a VPIM voice message a new disposition parameter "voice" is
defined with the preceding values to be used as appropriate. Note
that there SHOULD only be one instance of each of these types of
audio contents per message level. Additional instances of a given
type (i.e., parameter value) may occur within an attached forwarded
voice message.
19. Appendix F - Change History: RFC 1911 to this Document The updated profile in this document is based on the experience of a proof of concept demonstration of VPIM at EMA'96 in April 1996 and a subsequent demonstration of products at EMA'97 in April 1997. This version of the profile is significantly different from the previous described in [VPIM1]. The changes are categorized as general, content, transport and compliance. They are detailed below: 1. General - All definitions are now contained in separate documents that are referenced by this profile. The new documents include: - a refined multipart/voice-message definition - a refined (i.e., added nibble order) audio/32KADPCM definition - the definitions of TIFF-F and image/tiff for fax images - the Content-Duration definition - Changed the Voice version to 2.0 - Added Table of Contents and more examples - Various editorial updates to improve readability - Added more security considerations 2. Content - Modified multipart/voice-message content type by dropping the positional dependence of contents while restricting its contents to voice message specific content types - Explicitly indicated other contents that may be present ina multipart/mixed content type - Explicitly defined the forwarding model using message/RFC822 - Explained the use of reply-to and from header fields for addressing message replies - Deprecated the special "loopback" address because of security concerns and its use only for testing
- Defined the non-mail-user reserved address to support the case in
which replies to the originator are not possible
- Eliminated the text name in the "To" and "CC" header fields.
Deprecated ordering of text names in the "From" header.
- Added support for facsimile using TIFF-F in an image/tiff;
application=faxbw content type
- Profiled vCard in the text/directory body part for transport of
directory information about the originator
- Loosened text restriction
- Added additional details on delivery and receipt notifications
- Added support for message disposition notifications, also known
as receipt notifications.
- Added suggested addressing formats
- Described handling of private messages
- Described the handling of non-profiled contents in VPIM messages
- Described the use of Content-Disposition to semantically identify
audio contents
3. Transport
- Moved binary support to optional
- Added optional ESMTP keywords for return of content, enhanced
status codes, original recipient, and envelope ID
- Described use of null MAIL FROM address
4. Compliance
- Added an explicit section on conformance specifying conformance
to content or transport
- Improved conformance table in Appendix A
20. Full Copyright Statement Copyright (C) The Internet Society (1998). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.