Avaya Compatible Plantronics EncorePro 530 HW530 Noise Canceling Headset Bundle | Avaya VoIP 1600, 9600 IP Phones: 1608, 1616, 9601, 9608, 9610, 9611, 9611G, 9620, 9620C, 9620L, 9621, 9630, 9640, 9640G, 9641, 9650, 9650C, 9670 Bundle of 2 items - Plantronics 530 Headset and Avaya compatible telephone interface cable Compatible Avaya IP Phones: 1608, 1616, 9601, 9608, 9610, 9611, 9611G, 9620, 9620C, 9620L, 9621, 9630, 9640, 9640G, 9641, 9650, 9650C, 9670 Ultra Noise-Canceling microphone filters out background sound Plantronics 530 is lightest headset on the market