https://app.knowbase.one/vault/rfc/docid/7509
RFC6914: SIMPLE Made Simple: An Overview of the IETF Specifications for Instant Messaging and Presence Using the Session Initiation Protocol (SIP)
Internet Engineering Task Force (IETF) J. Rosenberg Request for Comments: 6914 jdrosen.net Category: Informational April 2013 ISSN: 2070-1721 SIMPLE Made Simple: An Overview of the IETF Specif...