Fanvil Reset
Fanvil ATA
Press and hold the reset key for at least 6 seconds
Keep holding until all light begin to flash
After a restart, your ATA will be successfully reset
Fanvil W611W
Connect to the internet
Press the Menu key, then navigate to Status followed by Network
Proceed to the Wi-Fi IP address on your browser using https://
Enter your username and password in the provided fields
You should now be greeted by a screen such as below
Click on Configurations
Scroll to the bottom of the page
Click Reset Phone
Click Reset
After the restart, your phone will be successfully reset.