Instant Messaging and Presence Protocol (impp)

In addition to this official charter maintained by the IETF Secretariat, there is additional information about this working group on the Web at:

       Additional IMPP PAGE

Last Modified: 2004-08-02


Mark Day <>
Derek Atkins <>

Applications Area Director(s):

Ted Hardie <>
Scott Hollenbeck <>

Applications Area Advisor:

Ted Hardie <>

Mailing Lists:

General Discussion:
To Subscribe:

Description of Working Group:

This working group will eventually define protocols and data formats
necessary to build an internet-scale end-user presence awareness,
notification and instant messaging system.  Its initial task is to
determine specific design goals and requirements for such a service.
The design goals document will be submitted for IETF-wide review,
and based on that review, the group's charter will be extended.


Instant messaging differs from email primarily in that its primary
is immediate end-user delivery. Presence information was readily
accessible on internet-connected systems years ago; when a user had an
open session to a well-known multi-user system, his friends and
colleagues could easily tell where he was connected from and whether he
was using his computer.  Since that time, computing infrastructure has
become increasingly distributed and a given user may be consistently
available," but has no standard way to make this information known to
her peers.  This working group will design a system to address this


The working group will develop an architecture for simple instant
messaging and presence awareness/notification. It will specify how
authentication, message integrity, encryption and access control are
integrated. It is desirable, but not required, for the working group
to develop a solution that works well for awareness of and
communication with entities other than human users.


Providing a general notification mechanism for data other than user
presence information and instant messages.

The following keywords describe the scope for the working group.
Details are to be developed in the architecture document which is the
output of this working group:









The working group plans to deliver the following document:

- Requirements for Instant Messaging and Presence

Goals and Milestones:

Done    Submit Internet-Draft of Design Goals for Instant Messaging and Presence Information
Done    Submit design goals Internet-Draft to IESG for publication as an RFC
Done    Submit I-D on common instant message format
Done    Meet at 50th IETF in Minneapolis
Done    Submit Common Presence and Instant Messaging document and Common Instant Message Format to IETF for consideration as Proposed Standard

No Current Internet-Drafts

Request For Comments:

A Model for Presence and Instant Messaging (RFC 2778) (35150 bytes)
Instant Messaging / Presence Protocol Requirements (RFC 2779) (47420 bytes)
Date and Time on the Internet: Timestamps (RFC 3339) (35064 bytes)
Common Profile for Presence (CPP) (RFC 3859) ( bytes)
Common Profile for Instant Messaging (CPIM) (RFC 3860) ( bytes)
Address Resolution for Instant Messaging and Presence (RFC 3861) ( bytes)
Common Presence and Instant Messaging: Message Format (RFC 3862) ( bytes)
Presence Information Data Format (PIDF) (RFC 3863) ( bytes)