Headset Cable Adapter A10-16 Direct Connect for Plantronics Headsets | GTW 66268-03 | See Description Section for Fully Compatible Phones ADAPTER CABLE FOR MULTIPLE PHONES AND ADDASOUND, PLANTRONICS AND VXi (P-version) HEADSETS: The A10-16 adapter cable also you to plug your headset into your phone without the need for an amplifier. This cable is NOT compatible with Cisco and Avaya phones. EASY USAGE: Quick Disconnect - Allows for easy disconnect from phone without removing headset PLUG-N-PLAY CAPABILITY: Low-cost, affordable, commercial-grade cable adapter - works with select office phones (see list below) with a headset port (RJ-9/RJ-22). NOTE for select Siemens and Unify phones a special adapter is required when using a headset. Please check your user manual for details. TELEPHONE COMPATIBILITY: 100% Compatible - The phone models listed are compatible with this item. Contact us if you have questions about compatibility with your phones and our friendly, Virginia-based support specialists will be glad to assist you. INTENDED USAGE: This adapter will work with the compatible phones mentioned in the Description Section below. The Adapter cable is designed for compatible phones within North/South America and Pac-Rim countries. Not intended for EMEA countries. If your phone is not listed in the Description Section of this page please contact us prior to usage to confirm your phone is compatible.