[Serusers] forwarded calls got timeout when called part hangup

Hi there, I use a t_on_failure("1") in route[1] for a unavailable server to another sip server, but always get timeout (code=408) when the called part hangup, no error (code=200) when calling part hangup. Please help!! here is my ser.cfg and log: ============================== # # $Id: ser.cfg,v 1.25.2.1 2005/02/18 14:30:44 andrei Exp $ # # simple quick-start config script # # ----------- global configuration parameters ------------------------ debug=3 # debug level (cmd line: -dddddddddd) fork=yes #log_stderror=yes # (cmd line: -E) listen=127.0.0.1 /* Uncomment these lines to enter debugging mode fork=no 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/local/lib/ser/modules/mysql.so" #loadmodule "/usr/local/lib/ser/modules/postgres.so" loadmodule "/usr/local/lib/ser/modules/avpops.so" loadmodule "/usr/local/lib/ser/modules/sl.so" loadmodule "/usr/local/lib/ser/modules/tm.so" loadmodule "/usr/local/lib/ser/modules/rr.so" loadmodule "/usr/local/lib/ser/modules/maxfwd.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/registrar.so" loadmodule "/usr/local/lib/ser/modules/textops.so" #loadmodule "/usr/local/lib/ser/modules/xlog.so" loadmodule "/usr/local/lib/ser/modules/acc.so" # Uncomment this if you want digest authentication # mysql.so must be loaded ! #loadmodule "/usr/local/lib/ser/modules/auth.so" #loadmodule "/usr/local/lib/ser/modules/auth_db.so" # ----------------- setting module-specific parameters --------------- modparam("acc", "log_missed_flag", 2) modparam("acc", "log_level", 1) modparam("acc", "log_flag", 1) modparam("acc", "failed_transactions", 1) modparam("acc", "log_fmt", "miocfsdrtup") #modparam("acc", "db_flag", 3) #modparam("acc", "db_missed_flag", 4) #modparam("acc", "failed_transactions", 1) #modparam("acc", "db_url", "postgres://gatekeeper:mm1ch0t@localhost/ser") #modparam("acc", "log_extra" ,"ua=hdr/User-Agent") #modparam("acc", "db_extra" ,"uuid=avp/i:888; src_ip=avp/i:999") modparam("avpops", "avp_aliases", "c_uri=i:888; s_ip=i:999" ) # -- 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) # — tm params -- # set time for which ser will be waiting for a final response; # fr_inv_timer sets value for INVITE transactions, fr_timer # for all others modparam("tm", "fr_inv_timer", 15 ) modparam("tm", "fr_timer", 10 ) # ------------------------- 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 (msg:len >= 2048 ) { sl_send_reply("513", "Message too big"); break; }; if (method=="INVITE" || method=="BYE" || method=="CANCEL"){ ## Accounting for all calls setflag(1); # setflag(2); }; if (method=="INVITE") { record_route(); } # write the source IP as avp "s_ip" for accounting purposes # avp_write( "$src_ip", "$s_ip"); if (loose_route() ) { log("------- LOOSE ROUTE"); route(1); break; }; if (!uri==myself) { # mark routing logic in request append_hf("P-hint: outbound\r\n"); log("------- IF ROUTE"); #route(1); break; } else { # write the current RURI as avp "c_uri" for accounting purposes #avp_write( "$ruri", "$c_uri"); append_hf("P-hint: outbound alias\r\n"); log("------- ELSE ROUTE"); route(1); break; }; append_hf("P-hint: usrloc applied\r\n"); log("------- LAST ROUTE"); #route(1); setflag(4); break; } route[1] { if ((src_ip==192.168.0.199)) { if ((uri=~"^sip:1617.*@127\.0\.0\.1") or (uri=~"^sip:1508.*@127\.0\.0\.1")) { log(1, "----------- Forwarding to OUR GW\n"); rewritehost("192.168.0.201"); log("----------- Host rewrited\n"); setflag(1); # if we do not get a positive reply, continue at reply_route[1] t_on_failure("1"); }else if ((uri=~"^sip:1.*@127\.0\.0\.1")) { log("----------- Forwarding to GW\n"); rewritehost("192.168.0.100"); log("----------- Host rewrited\n"); setflag(1); }; t_relay(); break; } } failure_route[1] { if (t_check_status("487")) { break; }; # forwarding failed -- try again at another destination if (method=="INVITE" && t_check_status("403|408|500|503")) { # revert_uri(); log("----------- Next gateway\n"); rewritehost("192.168.0.100"); log("----------- Host rewrited\n"); append_branch(); setflag(1); t_relay(); } } ========================================= log: Jul 31 15:17:38 localhost /usr/local/sbin/ser[3468]: ACC: transaction answered: method=INVITE, i-uri=sip:16175552222@127.0.0.1:5060, o-uri=sip:16175552222@192.168.0.201:5060, call_id=C3ECE80-200011DB-9498E149-4F3DC2BB(a)199.232.41.199, from=<sip:192.168.0.199>;tag=318DE490-1872, code=200, totag=SDa3kv999-78f0001f-0-2058902615, fromtag=318DE490-1872, to=<sip:16175552222@127.0.0.1>;tag=SDa3kv999-78f0001f-0-2058902615, uid=n/a, userpart=16175552222 Jul 31 15:17:38 localhost /usr/local/sbin/ser[3463]: ACC: request acknowledged: method=ACK, i-uri=sip:127.0.0.1:5060;ftag=318DE490-1872;lr=on, o-uri=sip:16175552222@192.168.0.100:5060;endpoint=127.2.0.43;transport=udp, call_id=C3ECE80-200011DB-9498E149-4F3DC2BB(a)192.168.0.199, from=<sip:192.168.0.199>;tag=318DE490-1872, code=200, totag=SDa3kv999-78f0001f-0-2058902615, fromtag=318DE490-1872, to=<sip:16175552222@127.0.0.1>;tag=SDa3kv999-78f0001f-0-2058902615, uid=n/a, userpart=n/a Jul 31 15:18:13 localhost /usr/local/sbin/ser[3471]: ACC: transaction answered: method=BYE, i-uri=sip:127.0.0.1:5060;ftag=318DE490-1872;lr=on, o-uri=sip:16175552222@192.168.0.100:5060;endpoint=127.2.0.43;transport=udp, call_id=C3ECE80-200011DB-9498E149-4F3DC2BB(a)192.168.0.199, from=<sip:192.168.0.199>;tag=318DE490-1872, code=408, totag=SDa3kv999-78f0001f-0-2058902615, fromtag=318DE490-1872, to=<sip:16175552222@127.0.0.1>;tag=SDa3kv999-78f0001f-0-2058902615, uid=n/a, userpart=n/a