[SR-Users] Need help to log the call trace/flow in file

Hi Developers, I need help to log the call flow in a file. Our purpose to have only one entry per call in a file based system at the end of the call. For example: CALL-ID TO FROM START TIME END TIME .... MISSED COMPLETED 1 sip:1@abc.com sip:100@abc.com 2017-07-28 18:29:14 2017-07-28 18:29:14 yes no 2 sip:2@abc.com sip:100@abc.com 2017-07-28 18:29:14 2017-07-28 18:29:14 no yes 3 sip:3@abc.com sip:100@abc.com 2017-07-28 18:29:14 2017-07-28 18:29:14 no yes I have gone through various trace module, but its appear that all module record the call flow/logs in database. ie siptrace,acc,dialoge module. Could you please help me to log the information. one of the approach I have thought to store all the variable in AVP variables in request_route,failure_route,on_reply route..etc For ex. $avp(from)=$fu; $avp(to)=$tu; $avp(starttime)=startime $avp(endtime)=endtime etc... //log at call end in a seperate logs file and xlog("LOG_INFO",$avp(from),,$avp(to),$avp(starttime),$avp(endtime)) Please let know if this approach is correct or any other way to achieve this, Thanks, Amit