Avaya Phone Compatible Plantronics HW530 Headset w/Mute Button | Avaya 1600 and 9600 Series IP Phones BUNDLE OF 2 ITEMS:  Plantronics EncorePRO Headset & Avaya Telephone Interface Cable QUICK DISCONNECTIVITY:  Allows for easy disconnect from phone without removing headset COMPATIBILITY:  Compatible Avaya IP Phones: Avaya 1600 and 9600 IP Phones: 1608, 1616, 9601, 9608, 9610, 9611, 9611G, 9620, 9620C, 9620L, 9621, 9630, 9640, 9640G, 9641, 9650, 9650C, 9670 NOISE CANCELLING:  Ultra Noise-canceling microphone filters out background noise GLOBAL TECK SERVICE: Low-cost, affordable, commercial-grade headset - works with Avaya office phones with a headset port (RJ-9)