I am happy to say that the phones have been working fine for a bit over a week. However the Debian Linux still needs to be updated to V9, per 3CX. Unfortunately their upgrade script fails because the Debian developers moved some critical components to a different "archive' server and I need to edit an index manually. I think I have the bits needed but I am holding off till I get the VOEvent stuff working and complete the maintenance releases of ACP 8.2.