Changed compliance level names, updated required support per Council discussion.
The &XSF; defines protocol suites for the purpose of compliance testing and software certification. This document specifies the 2009 compliance levels for XMPP clients. Support for the listed specifications is REQUIRED for compliance purposes.
The XMPP Basic Client 2009 certification level is defined as follows:
+The XMPP Core Client 2009 certification level is defined as follows:
* Note: RFC 3920 and RFC 3921 are currently being revised to correct errors, clarify matters that were underspecified, and incorporate feedback based on implementation and deployment experience gained since RFC 3920 and RFC 3921 were published in 2004. Although the compliance level specified herein refers to RFC 3920 and RFC 3921, developers are also advised to consult &rfc3920bis; and &rfc3921bis;, which provide the most up-to-date and accurate description the core XMPP protocols.
The XMPP Intermediate IM Client 2009 certification level is defined as follows:
+The XMPP Advanced Client 2009 certification level is defined as follows: