PSU VoIP blog reader Oskar contributed an updated patch for GTalk shared status/invisible in Asterisk 11. You may recall that I hacked this functionality in to Asterisk 1.8. Oskar’s updates work the same way, now part of res_xmpp instead of the deprecated res_jabber. Thanks, Oskar!
From the Asterisk CLI:
xmpp set invisible [off|on] client_name