Group Messaging in SIP

Document Type Expired Internet-Draft (individual)
Authors Petri Koskelainen  , Henning Schulzrinne 
Last updated 2001-07-18
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document introduces various problems and issues relating to the usage of the Session Initiation Protocol (SIP) for group messaging. Several potential extensions are analyzed and proposed. Both one-shot group messaging (paging) and session based group messaging are covered in the document. Group chat between human beings is one application for group messaging, others exists also such as SIP group messaging between robots or game applets.


Petri Koskelainen (
Henning Schulzrinne (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)