Hi,   Just some ideas for research:   IMS route: https://kamailio.org/docs/modules/devel/modules/ims_charging.html <https://kamailio.org/docs/modules/devel/modules/ims_charging.html>   Using SIP session timer and then executing on the periodic re-INVITE the check and end the dialog if needed   Insert the call in a user specific profile together with a dialog timeout and then periodically check the profiles in a timer route and update the timeout   Insert the call in a hash table together with a timeout and then periodically checks this again in a timer route   Cheers,   Henning   -- Henning Westerholt – https://skalatan.de/blog/ <https://skalatan.de/blog/> Kamailio services – https://gilawa.com <https://gilawa.com/>   *From:* sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; *On Behalf Of *Avremy Cohen *Sent:* Tuesday, May 18, 2021 11:29 AM *To:* sr-users(a)lists.kamailio.org *Subject:* [SR-Users] execute callback every X minutes mid call   Hi  I am trying to execute code every X min in active calls and I cant seem to find any way to do this. I basically have a function  that checks if the user has balance and permission to carry on the call and the callback should trigger it every X mins.    The  call_control module doesnt work for me since                 A. It doesn't trigger a function it just ends the callback                 B. it uses an external application to calculate it    any advice is appreciated  Avi __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users