It seems that in kamailio 5.0.x field duration is billing time. Is it? 2017-08-10 14:24 GMT+03:00 ycaner &lt;yasin.caner(a)netgsm.com.tr <mailto:yasin.caner@netgsm.com.tr>>: Hello, Dialog module can help you about it.It can generate CDR with billsec. http://kamailio.org/docs/modules/5.0.x/modules/dialog.html <http://kamailio.org/docs/modules/5.0.x/modules/dialog.html> -- View this message in context: http://sip-router.1086192.n5.nabble.com/acc-billsec-tp161050p161051.html <http://sip-router.1086192.n5.nabble.com/acc-billsec-tp161050p161051.html> Sent from the Users mailing list archive at Nabble.com. _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> -- Aydar A. Kamalov _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users