HeadsetsDSX Product Description Components ◆ 5ComponentsHeadsetsCorded Headsets for DSX Keysets and DTR/DTH SLTsThe following corded headsets are compatible with DSX keysets and the DTR/DTH single line telephones.Check with your supplier for their latest offerings.NEC / Plantronics HeadsetsNEC / Plantronics Amplified HeadsetsNEC P/N Description Style Microphone Type Plantronics ModelNumber- Polaris Starset In-the-Ear Voice Tube P31Noise Canceling P31N750631 Polaris Mirage On-the-Ear Voice Tube P41- Noise Canceling P41N750632 Polaris Supra Monaural Over-the-Head Voice Tube P51750636 Noise Canceling P51N- Polaris Supra Binaural Over-the-Head Voice Tube P61750633 Noise Canceling P61N750630 Polaris TriStar In-the-Ear Voice Tube P81- Noise Canceling P81N750634 Polaris Encore Monaural Over-the-Head Voice Tube P91- Noise Canceling P91N- Polaris Encore Binaural Over-the-Head Voice Tube P101760635 Noise Canceling P101N- DuoSet Convertible Over-the-Head,On-the-EarVoice Tube P141Noise Canceling P141N- DuoPro On-the-Ear Voice Tube P151Noise Canceling P151N- DuoPro Over-the-Head Voice Tube P161Noise Canceling P161N- DuoPro Convertible Over-the-Head, Voice Tube P171- DuoPro Convertible Over-the-Head, Noise Canceling P171N- DuoPro Behind-the-Head Voice Tube P181- DuoPro Behind-the-Head Noise Canceling P181N750643 Polaris/SupraPlus Monaural Over-the-Head Voice Tube P251750644 Polaris/SupraPlus NC Monaural Noise Canceling P251N- Polaris/SupraPlus NC Binaural Over-the-Head Voice Tube P261750645 Polaris/SupraPlus NC Binaural Noise Canceling P261N- SupraPlus SL Monaural Over-the-Head Voice Tube P351Noise Canceling P351N- SupraPlus SL Binaural Over-the-Head Voice Tube P361Noise Canceling P361N