- Model: P-Series
- Firmware version: Any
1. Enable TLS Settings on PBX Side
2. Enable Extension TLS Settings
Switch the transport to TLS. This setting should be configured for the extension respectively.
3. TLS Settings on the IP phone.
Here we take a Yealink T33G as an example.
1) Auto Provisioning phones
If the phone has been provisioned by PBX Auto Provisioning feature.
Reboot the phone, the phone will automatically change to TLS.
2) Manual configured phones
3) Trusted Certificates Settings.
Disable this option, if the registration failed.
See the comments in the following figure: