You could NOT build an IVR on Kamailio. Kamailio it's not a SIP-UAS, neither a B2BUA, Kamailio it's a SIP-Router with steroids, but will not handle an IVR. You should review the docs and try to undestand what Kamailio it's made for. From: "Amit Pal" <amit.pal(a)coraltele.com> To: "Kamailio" <sr-users(a)lists.kamailio.org> Sent: Friday, December 11, 2020 4:18:59 PM Subject: [SR-Users] Kamailio dtmf signaling Dear Team, I am using kamailio + rtpengine, how can I processed dtmf from cfg scripts. even thought I can able to see dtmf over syslog. but can not able to capture in kamailio.cfg. how can I prepared ivr using kamalio? Please find the attached syslog. Regards Amit Pal _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users