We are upgrading from v11 to v14 of 3cx. I have been having constant problems getting 3CXPhone to work properly. 1) CTI mode will not control the deskphone: we use Snom 370 models. Cannot dial out. It will work fine on some computers, and not at all at others. Welcome emails were used to configure the clients. 2) Presence information not working across bridges. Our branch offices are connected via VPN tunnels to each other. Presence information is being replicated across some locations, but not others. We use Symantec Endpoint AV. It was configured to work with 3CX, per the instructions. Had no problems with running it on 3CXv11. I uninstalled it from the 3CX servers per 3cx Support directions, but am still having the problem.