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Last Modified: 2003-03-25
Several minor problems with VPIM v2 have been identified during the development and testing of products. These problems can easily be fixed with minor clarifications to the protocol. A revised VPIM v2 (and related protocols as necessary) will be produced to reflect these clarifications. No protocol changes will be introduced in this update.
Though VPIM uses Internet Mail, its restrictions can be inconvenient when sending and receiving messages from traditional desktop email clients. As a result, there is interest in loosening the restrictions of VPIM in a new version and make it the voice component of a unified messaging protocol suite. This would make it easier for desktop clients to send, receive, and forward voice messages while maintaining support for the characteristics of a voice message.
The primary goal of Version 3 is to support interoperability with deployed desktop email clients. A secondary goal is to specify interoperability with Version 2. The result is that the semantics of a voice or fax message within an email message can be interpreted at as many clients as possible.
An initial proposal for VPIM v3 (also known as Internet Voice Mail (IVM)) is currently documented in several Internet Drafts (see draft-ema-vpimv3-*): VPIM v3 Goals, VPIM v3 Unified Messaging (Primary Content), VPIM Addressing and VPIM v3 Specification. As well, several supporting protocol extensions may need to be worked in this group or in collaboration with other groups. These are: IMAP voice extensions, voice directory profiles, content negotiation details for voice and partial non-delivery notifications.
The working group will initially focus on agreement of the goals and then define a set of protocol documents to address the media, addressing, and handling semantics. Finally, VPIM v2 - v3 Interworking will be documented separately if needed.
Collaboration
The voice mail vendors and several email vendors have been meeting in the VPIM work group at the Electronic Messaging Association (EMA) for several years. This team produced VPIM v1 (RFC 1911) and VPIM v2 (RFC 2421). This group meets three times a year in between IETF meetings and is regularly attended by core VPIM proponents. As a result, there is benefit to using this venue as an interim meeting.
In addition, the work of this group is related to similar work by the Internet Fax WG. It is intended that Version 3 will use at least the Simple Mode of Internet Fax.
As well, other IETF WGs may be interested in proposed voice extensions to protocols. There may be value in collaborating on some work items.
| Done | Document interworking VPIM v2 implementations | |
| Done | Issue updated drafts of IVM/VPIM v3 Goals, IVM/VPIM v3 Specification and related protocol documents as Internet Drafts | |
| Done | Issue updated VPIM v2 Internet Draft | |
| Done | Issue updated Internet Drafts of VPIM addressing | |
| Done | Issue updated Internet Drafts of VPIM directory | |
| Done | WG last call on VPIM v3 Goals as Informational RFC | |
| Done | Issue updated Internet Drafts of VPIM IMAP extensions | |
| Done | Issue revised VPIM v3 Specification and related protocol documents as Internet Drafts | |
| Done | WG last call on IVM Specification and related protocol documents as Proposed Standards RFCs | |
| Done | WG last call on revised VPIM v2 for Draft Standard | |
| Done | Submit IVM Goals to IESG for consideration as Informational RFC | |
| Done | Submit VPIM addressing to IESG for consideration as a Proposed Standard | |
| Done | Submit IVM et al to IESG for consideration as a Proposed Standard | |
| Done | WG last call on VPIM client extensions as Standards Track RFC | |
| Done | Submit VPIM v2 to IESG for consideration as a Draft Standard RFC | |
| Done | Submit VPIM IMAP client extensions to IESG for consideration as Standards Track RFC | |
| Done | WG last call on VPIM addressing as Standards Track RFC | |
| Done | WG last call on VPIM directory profile as Standards Track RFC | |
| Done | Submit VPIM addressing to IESG for consideration as Standards Track RFC | |
| Done | Submit VPIM directory to IESG for consideration as Standards Track RFC | |
| Done | WG last call on IVM/VPIM v3 content negotiation as Proposed Standard RFC | |
| Done | Submit VPIM content negotiation to IESG for consideration as Proposed Standard RFC | |
| Done | Review final work items and close |
| RFC | Status | Title |
|---|---|---|
| RFC3458 | PS | Message Context for Internet Mail |
| RFC3459 | PS | Critical Content Multi-purpose Internet Mail Extensions (MIME) Parameter |