I have installed SER on a Server and FREERADIUS+MYSQL on other Server. When I try to connect at SER with a client Sip, the RADIUS response it's the follow: "Auth: Login incorrect: [barney(a)mydomain.it/<no User-Password attribute>] (from client xxx port 5060)" It seem that RADIUS don't send a correctly reply at SER. Infact the Log of SER it's ". SER [3561] rc_check_reply: received non-matching id in RADIUS server response" Thanks Pasquale Biafora