[Serusers] Problems with CANCEL and INVITE

Hello all, I have a problem when I try to cancel an invite, because I have modified the invite method. In my ser.cfg: if ((method=="INVITE")&&(!lookup("location"))) { exec_msg("printenv SRCIP; /bin/bash /usr/local/ser_snapshot/sbin/sms"); sl_send_reply("100", "Trying"); exec_msg("sleep 10"); if (!lookup("location")){ sl_send_reply("100", "Trying"); exec_msg("sleep 10"); } else { t_relay(); break; } if (!lookup("location")){ sl_send_reply("100", "Trying"); exec_msg("sleep 10"); } else { t_relay(); break; } if (!lookup("location")){ sl_send_reply("404", "Not on-line"); break; } else { t_relay(); break; } }; If I send an INVITE to user2, who is off-line, SER sends a SMS to this user2 and meanwhile , sends TRYINGS to me, until user2 sends a REGISTER. I have a problem, because If I send a CANCEL, SER still sends TRYINGS to me and SER doesn`t send "487 Request Terminated" and SER doesn´t associate CANCEL and INVITE. How can I solve this? any idea? I think that maybe, If I use a mysql table to save CSEQ of CANCEL, and before SER sends TRYINGS, SER checks if CSEQ is into table but I don´t know if SER can save CANCEL information in a mysql table. Could someone help me, please? Thank you very much. _________________________________________________________________ Prueba algunos de los nuevos servicios en línea que te ofrece Windows Live Ideas: tan nuevos que ni siquiera se han publicado oficialmente todavía. http://ideas.live.com