Hello All, we are running freeswitch 1.6.20, calls are controlled via ESL, CDRs are written with mod_xml_cdrl. Sometimes we see „hanging“ channels. In such a case the CDR via mod_xml_cdr is written and the last log entry for such a call is "Locked, Waiting on external entities“. ... freeswitch.log.2018-10-09-10-19-07.1:db2908e3-c06b-4293-88b1-e18cffb66263 2018-10-09 10:18:15.197345 [DEBUG] switch_core_state_machine.c:610 (sofia/internal/anonymous@anonymous.invalid) State Change CS_REPORTING -> CS_DESTROY freeswitch.log.2018-10-09-10-19-07.1:db2908e3-c06b-4293-88b1-e18cffb66263 2018-10-09 10:18:15.197345 [DEBUG] switch_core_session.c:1665 Session 166111 (sofia/internal/anonymous@anonymous.invalid) Locked, Waiting on external entities ... How can I proceed to further analyze the problem ? In the last log line I also see the session number (Session 166111) - is there a way to find out on which external entity it is waiting? Thanks and regards Markus