Bluetooth headset industry rules is not possible to achieve off-hook, but the Bluetooth headset can be achieved to answer the phone, double-
click the answer key to call back, hang up the phone and other operations
Why can't the IP phone connect to Wi-Fi?
If the network is secure, ensure the entered password is right.
Ensure your gateway/router enables the wireless network feature.
Reboot your gateway/router.
Turn off the Wi-Fi feature on the IP phone and then turn it on again.
Why is the wireless signal strength low?
Ensure the IP phone and your gateway/router are within the working range and there is no obvious interference (walls, doors, etc) between
them.
How to download XML Configuration?
Click Management Configuration
How to Import Trusted CA certificate?
Click Management Trusted CA
How to Import Server CA certificate?
Click Management Server CA