hi all; i want to write "billing" project with  kamailio,i using python,postgresql, dialog module and falcon.my problem is in "call_id" section. my code(this section) is in python : """ . . . if (method   ==  'INVITE'):             callid          =        req.get_param_as_list("call_id")             print(req.get_param_as_list("Ts"))             print("call id = %s " % callid) elif (method   ==  'ACK'):                        time_req    =       int(req.get_param_as_list("Ts")[0])             callid      =        req.get_param_as_list("call_id")[0]             print("user %s call to %s at time %d %            (from_user,to_user,time_req)) . . .          """ and in kamailio.cfg: """ http_query("http://127.0.0.1:5000/test?method=$rm&            call_id=$dlg(callid)&Ts=$Ts&fu=$fu&tu=$tu","$var(result)"); """" "callid" in ACK is ok but "callid' in invite is "null", where is my problem? thanks. _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users