Is it possible to configure 3CX to automatically terminate active calls when the SIP registration has not been renewed? In other words, if the device doesn't renew the registration on time, before expiry, the call gets terminated by the PBX. I want to test the case where the SIP phone/device has not re-registered on time. Some PBXs implement the behavior of killing the call. Can 3CX be configured to do that?