[Serusers] AUTHENTIFCATION help meeeeeeeeee

Hi, I can place and receive call from the PSTN, but I can place call even if I am not registered !!!!!!! And I want only user who are registered can place call? How can I do please? That's my configuration file : route{ # initial sanity checks -- messages with # max_forwards==0, or excessively long requests if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if ( msg:len > max_len ) { sl_send_reply("513", "Message too big"); break; }; # we record-route all messages -- to make sure that # subsequent messages will go through our proxy; that's # particularly good if upstream and downstream entities # use different transport protocol record_route(); # loose-route processing if (loose_route()) { t_relay(); break; }; /* grant Route routing if route headers present */ if (loose_route()) { t_relay(); break; }; /* record-route INVITEs -- all subsequent requests must visit us */ if (method=="INVITE") { record_route(); }; # now check if it really is a PSTN destination which should be handled # by our gateway; if not, and the request is an invitation, drop it -- # we cannot terminate it in PSTN; relay non-INVITE requests -- it may # be for example BYEs sent by gateway to call originator if (uri=~"My realm") { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("My realm ", "subscriber")) { www_challenge("My realm ", "0"); break; }; save("location"); break; }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { #rewritehostport("*****:5060"); forward(*****, 5060); }; # forward the request now if (!t_relay()) { sl_reply_error(); break; }; }; }