Solved SIP Inbound Sometimes Doesn't Work, After A Restart

[JCLloyd]

System running fine for weeks. Windows updates come in that require a reboot... Incoming calls get a fast busy, as if there is a programming error. A restore seems to fix the issue, but I am thinking that it is just a service restart that is correcting the issue.
. Outbound seems to work fine...

Does anyone think this is the case? If so, would it be just one service?
. I am thinking that bouncing "3CXSystemService01", aka "3CX PhoneSystem 01 System Server", fixes this.
. I set this to be a delayed start, and will need to test the system for future updates. With Windows, that will most likely be this week!

I did run across this 2 year old thread that led me to think I am on the correct path...
https://www.3cx.com/community/threads/no-incoming-calls-after-power-failure.41323/​

I appreciate any helpful feedback.

 

[JCLloyd]

I think I solved this one, in case anyone else has this issue.
. Set the "SIP Server" service to 'Delayed Start' worked, at least once. I will try it, again, when I get a chance.