UriSchemes/xmpp

"xmpp" is uriReg:schemeName of [
  dc:description """Extensible Messaging and Presence Protocol (XMPP)""";
  dc:description """Jabber address""";
  is uriReg:specifies of [
    = <http://www.ietf.org/rfc/rfc4622.txt>;
    dc:title """Extensible Messaging and Presence Protocol (XMPP)""";
    dc:creator [
      dca:agentName "P. Saint-Andre"];
    inet:rfc "4622";
    dc:date "2006-07"; ];
]
.

URI spec: Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP)
Protocol spec: Extensible Messaging and Presence Protocol (XMPP)

ProxyTopic; see IANA registry.----