Sennheiser Avaya Electronic Hook Switch Cable for 2420, 5420, 46xx, and 56xx series phones

Features:

• Remotely answer your phone calls
• Handle all calls by the press of a single button, i.e. end the call
• Get notified from the distance about in-coming calls by the ring tone in the headset
• Efficient and flexible call handling i.e. take or end the call
• Call control towards the phone without using a mechanical handset lifter