A question about how your phone works,… you will find the answer in the YEALINK documentation.
You pass your communications from your computer, the installation and configuration of X-lite is explained step by step.
Or you can use your mobile phone (apple or android) for your calls, no problem… install the appropriate application from your store and follow all the steps…
For each configuration, the installation solution can be found in the following links… Do not hesitate to consult them.
X-lite is VOIP telephony software allowing you to benefit from a virtual phone directly from your computer.
A question about the operation of your phone, … you will find the answer in the YEALINK documentation.