Hi Dave Thx for the answer. I am trying avpops module for failure_route with serial forking directive with usr_preferences table. But i am getting several issues with it. Here are the logs and part of my ser.cfg fork=yes modparam("avpops","avp_url","mysql://root:root@localhost/ser") modparam("avpops","avp_table","usr_preferences") modparam("avpops","avp_aliases","serial_fork1=i:665") modparam("avpops","uuid_column","uuid") modparam("avpops","username_column","username") modparam("avpops","domain_column","domain") modparam("avpops","attribute_column","attribute") modparam("avpops","value_column","value") modparam("avpops","type_column","type") route { ........... append_hf("P-hint: usrloc applied\r\n"); avp_write("sip:101@192.168.1.1", "$serial_fork1"); avp_write("sip:102@192.168.1.1", "$serial_fork1"); avp_write("sip:103@192.168.1.1", "$serial_fork1"); route(1); } route[1] { # send it out now; use stateful forwarding as it works reliably # even for UDP2TCP # intercept failure replies t_on_failure("2"); if (!t_relay()) { sl_reply_error(); }; } failure_route[2] { # use the first element of the list (if any) and delete it from list if (avp_pushto("$ruri", "$serial_fork1")) { append_branch(); avp_delete("$serial_fork1"); t_on_failure("2"); t_relay(); } } But i am getting several issues. I have three UA's set 101,102,103. I am calling from some other domain on 100 which is aliased to 101. I expect that if 101 is free call shud come to it. Thats not happening. Then if 101 and 102 are busy or some other issue. call should reach last UA. I didn't get any proper example to add AVP's to usr_preferences table. Can you give me some example for it. _________________________________________________________________ Think Rani is the best? http://server1.msn.co.in/sp05/iifa/ Make sure she wins the award.