I think Polycom phones do. They support directed and group call-pickup which, if i'm not mistaken, uses out-of-dialog REFER.
-- Zahid On Jun 8, 2010, at 5:37 PM, Iñaki Baz Castillo wrote: > 2010/6/7 Klaus Darilion <klaus.mailingli...@pernau.at>: >> Hi! >> >> Does somebody know any SIP clients (hard/soft) which support out-of-dialog >> REFERs? > > AFAIK no one implements such useful feature :( > > -- > Iñaki Baz Castillo > <i...@aliax.net> > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users