Pls help me to config ser.cfg Now my envirmonet is: ser server: 172.16.255.1:5060 ( without DNS server ) SIP PSTN gateway: 172.16.255.1:6050 SIP UA: 172.16.2.xx And all SIP UAs have a PSTN number like 6169xxxx There are no DNS server in the system.(we don't apply for a domain name) I want: 1 All users use digest authorization when SIP UA registing ------ finished 2 All calls from SIP UA need authorization (return 407 to Invite request) 3 All calls to PSTN transfer to the SIP PSTN gateway(number no like "6169xxxx") -------- almost finished 3 All calls from the SIP PSTN gateway do not need authorization(I think use a caller sip:gateway@172.16.255.1:6050 as caller when call from gateway,then all call from this user and this ip address needn't authorazation) 4 All calls need write CDR record to mysq datebase The bigest problem is I don't know how to write conditonal sentence , like if(uri!=~"xxxx") or if((uri=="xxxx") | (uri=="yyyy")) There are no document talking about the syntax. Please help me. Any help is appreciate. Now my ser.cfg is: # ----------- global configuration parameters ------------------------ #debug=3 # debug level (cmd line: -dddddddddd) #fork=yes #log_stderror=no # (cmd line: -E) /* Uncomment these lines to enter debugging mode debug=7 fork=no log_stderror=yes */ debug=7 log_stderror=yes check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) #port=5060 #children=4 fifo="/tmp/ser_fifo" # ------------------ module loading ---------------------------------- # Uncomment this if you want to use SQL database loadmodule "/usr/lib/ser/modules/mysql.so" loadmodule "/usr/lib/ser/modules/sl.so" loadmodule "/usr/lib/ser/modules/tm.so" loadmodule "/usr/lib/ser/modules/rr.so" loadmodule "/usr/lib/ser/modules/maxfwd.so" loadmodule "/usr/lib/ser/modules/usrloc.so" loadmodule "/usr/lib/ser/modules/registrar.so" # Uncomment this if you want digest authentication # mysql.so must be loaded ! loadmodule "/usr/lib/ser/modules/auth.so" loadmodule "/usr/lib/ser/modules/auth_db.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- modparam("usrloc", "db_mode", 0) # Uncomment this if you want to use SQL database # for persistent storage and comment the previous line modparam("usrloc", "db_mode", 2) # -- auth params -- # Uncomment if you are using auth module # modparam("auth_db", "calculate_ha1", yes) # # If you set "calculate_ha1" parameter to yes (which true in this config), # uncomment also the following parameter) # modparam("auth_db", "password_column", "password") # -- rr params -- # add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1) # ------------------------- request routing logic ------------------- # main routing logic 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 (len_gt( 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; }; # if the request is for other domain use UsrLoc # (in case, it does not work, use the following command # with proper names and addresses in it) if (uri==myself) { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("novsky.com", "subscriber")) { www_challenge("novsky.com", "0"); break; }; save("location"); break; }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { # if(uri=~"^sip:6169*@") { forward(172.16.255.1,6050); break; # }; # else { # sl_send_reply("404", "Not Found"); # break; # }; }; }; # forward to current uri now; use stateful forwarding; that # works reliably even if we forward from TCP to UDP if (!t_relay()) { sl_reply_error(); }; } Best regards wangji