You will need to obtain the IP address from the Yealink Base Station, to do this please click on the following icon on the Base Station: 

1. Press the icon (as shown below) on the base station.  Your handset will ring and the IP address of the base station will be displayed on phone screen. 

2. Enter this IP address into a web browser address bar. 

3. This will take you to the Yealink base station web interface.