AGPtEK Corded Telephone with Headset & Dialpad for House Call Center Office - Noise Cancellation Easy to Setup -- Connects this telephone headsets to existing standard telephone jack Durable construction and rigid design for greater longevity.(Please kindly note that this telephone headset is not compatible with the internet cable; You can't pick up the phone without using the headset.) Noise Cancellation Microphone -- Equipped with noise canceling microphone, AGPtEK phone with headset can increase the voice clarity for superior high quality sound and screen 90% background noise so as to perfectly and truly present the sweet voice of the telephone operator. FSK/DTMF Caller ID Display -- The dialer can ring or silent when receive incoming calls as well the phone number will be displayed. Everything included of this call center phone and headset; So you can just plug into the wall telephone port and you are ready to make and receive phone calls. Volume Adjustment -- Scrolling wheel volume button of the corded phones can make the control of the sound easily and allows a more flexible listening experience. 30 DAYS RETURN -- If you are unsatisfied with the headset telephone, simply return it within 30 days for a full refund.