Yealink VC400 Administrator's Manual page 253

A dialog box pops up to prompt that the settings will take effect after a reboot.
Click Confirm to reboot the system immediately.
6.
To configure TLS for the Zoom/Pexip/BlueJeans/Mind/Custom platform via web user
interface:
Click on Account->Cloud
1.
Select Zoom/Pexip/BlueJeans/Mind/Custom from the pull-down list of Platform Type.
2.
Select TLS from the pull-down list of the Transport.
3.
Click Confirm to accept the change.
4.
To configure TLS for the SIP account via web user interface:
Click on Account->SIP Account.
1.
Configuring Security Features
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