Headset Dual Headphones Call Center for Cisco IP Telephone 7931 7960 7970 7962 7975 7961 7971 7960 M12 M22 Direct connect over the head headset, no additional amplifiers or adapters required. Built-in adjustable mute control. Quick Disconnect Coil Cable. Soft leathered ear cushions for all day comfort. Superior quality sound with the flexible adjustable noise cancellation microphone. Comfortable lightweight design, shirt clips included.