Autodestruct on dialog

han_sip.c: Autodestruct on dialog '7c1ea63f33a10e3128bbab276168c768@94.188.133.70' with owner SIP/omnisip-outgoing-0000001a in place (Method: BYE). Rescheduling destruction for 10000 ms

Then you most likely have a 'stuck' channel in Asterisk. That typically occurs when the channel should be destroyed, but something is still referencing the channel. This is usually sign of a bug in some off nominal condition.

As it is, Asterisk 11.9.x is pretty old - over two years now - and bugs involving stuck channels have certainly been fixed within that time frame. I'd recommend upgrading to the latest in the 11.x series to see if that resolves the issue.

https://community.asterisk.org/t/calls-not-disconnected-over-ami/67606