Note: This will only work with DECT Plantronics Wireless Headsets, such as the CS540 and the Savi W740. It will not work with strictly Bluetooth headsets.
Setup with lifter
Plug the pin from the online indicator into the lifter attached to the phone, pictured below.
Setup without lifter
Plug the pin from the online indicator into the rounded port in the back of the headset base between the power port and phone port.
That's it! It really can be that easy.