Voistek Call Center Telephone Headset for Adtran IP Phone IP321 331 430 450 650 670 and Altigen 500 510 600 705 710 720 805 and Mitel 4330 NEC DT300 DSX Aspire
Monaural direct connect telephone headsets with noise canceling are ideal for most standard telehpones equipped with modular RJ headset port. You can plug them directly to your headset-ready phones or into the handset port if your phone does not have headset port function.