Hope you are doing well.
I have checked the logs you have attached to the ticket, unfortunately this time also it doesn’t have the SDL logs.
We need these SDL logs(while the issue was happened at the site) to proceed further on this issue and I am attaching one sample SDL logs for your kind reference.
We would request you to setup a webex with the customer again to collect these logs from the cucm server.
In replying to my emails please include the address attach@cisco.com and for the consistency of the service request please make sure that you delete the previous messages and just retain the new one.
I have included my work schedule and contact details below for your reference. If you need immediate assistance and I am not available, please call your local Cisco TAC number and request the next available engineer to be assigned to your case.
Thank you for contacting Cisco TAC Support.