All Rights Reserved. The adapter plugs into the handset jack on your phone, and both the handset and headset then plug into the adapter.
Some adapters go next to the phone, and others go underneath.
With some phones, you have to raise the handset to use the headset. With others, you can leave the handset on the phone base while you use the headset. Some adapters provide wireless communications, so you can roam while on the phone. Plantronics Vista M12 Vista Universal Amplifiers adapt almost all telephones for use with a wide range of Plantronics headset styles. Select between your headset and handset at the touch of a button.