Hi All, The following lua script for calculate the call duration. But the issue here , the duration is calculating from the outbound initiate time. How to get the call answer time? session:preAnswer(); -- sleep a second session:sleep(1000); -- digits = session:playAndGetDigits(10, 20, 3, 5000, "#", "enter-dest.wav", "invalid-digits.wav", "\\d+|\\*"); -- Initiate an outbound call outSession = freeswitch.Session("sofia/gateway/voipms/"..digits,session) starttime = os.time(); freeswitch.consoleLog("info", "Start Time"..starttime.." \n"); freeswitch.consoleLog("info", "Before Bridge the Call \n"); freeswitch.bridge(session, outSession); freeswitch.consoleLog("info", "After Bridge the Call \n"); endtime = os.time(); freeswitch.consoleLog("info", "End Time"..endtime.." \n"); billsec = os.difftime(endtime,starttime); freeswitch.consoleLog("info", "Blling Sec"..billsec.." \n"); -- hangup session:hangup(); Thanks Lloyd