I did now migrate the FreePBX Server to a new hardware including an upgrade to FreePBX 15. All works well.
I have just a little remaining issue:
From my initial testing I have still 2 extensions somewhere hidden which lead to this warning in dashboard:
2 extensions/trunks have weak secrets
Warning: The use of weak SIP/IAX passwords can compromise this system
resulting in toll theft of your telephony service. You should change the
reported devices and trunks to use strong secrets.
Nebenstelle: 119 / Secret less than 6 digits
Nebenstelle: 118 / Secret less than 6 digits
These extensions are not listed anywhere in the FreePBX GUI and I want to remove them. Any idea where to look for it in the configuration files? A recursive grep was not successful so far…