Amplifier (GN 8210) to connect a headset to the Cortelco telephone
Do I need to buy an amplifier (GN 8210) in order to connect a headset to the Cortelco telephone?
Yes. If wish to have the ability to mute the headset, volume controls, sound improvement and hearing protection then the GN8210 should be purchase along with your headset. If your phone does NOT have a headset you will need to buy this device.
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