Hello, already tried this functions? You can call by any RPC methods available. https://kamailio.org/docs/modules/5.5.x/modules/tm.html#tm.rpc.cancel https://kamailio.org/docs/modules/5.5.x/modules/dialog.html#dlg.r.terminate… Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; *On Behalf Of *Antonio Couto *Sent:* Wednesday, June 15, 2022 3:36 PM *To:* Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; *Subject:* [SR-Users] terminate a call on 183 state Someone know how to terminate a call on TM module from a external application, http, websocket, udp or using other modules when the call on 183 state? I am making a answering machine detection analising audio from RTPEngine recording daemon , but i need to disconnect the call before is anwered byt remote side. Kamailio INVITE >> Destination << 100 trying << 183 session progress I need to comand Kamailio to drop this call from a external application in this point. I searched on each module but I can not find any solution. Thanks in advance