TLS/SRTP is designed to provide you with secure real time encrypted Voice media traffic, confidentiality and authentication. SRTP will prevent the calls from malicious attack such as Eavesdropping.
In-order to subscribe to this feature, please contact our support team and request for TLS support to be enabled on your customer account.
Once our support department has confirmed you have TLS enabled on your account you will see that your standard port number has been updated to 7061. Next follow the Yealink device configuration as normal, updating the port number to 7061 and transport protocol to TLS.
Once you have set the port number and transport mode in the account settings of your Yealink device, click the confirm button, which will update the device status to Registered.
Now you device is registered, select advanced in the account tab and select the RTP Encryption as Optional.
The final stage is to update the list of enabled codecs, navigate to the codec tab inside the account tab and remove G722 from the enable codecs and click confirm.
Now test a few calls and ensure you have 2 way audio communication, if not feel free to contact our support team for assistance.