Plantronics 37978-01 Cisco HHC, APC-4 Hookswitch Cable PL-37978-01

• Plantronics APC-4 headset hookswitch control adapter
• Transforms your Cisco Unified IP phone experience through remote answer/ end ring alert
• Works with: CS70N, CS50, CS55, Voyager 510S, SupraPlus Wireless