Cisco 6921, 6941, 6945, 6961, 7821, 7841, 7861, 7931G, 7940, 7940G. Cisco 8941, 8945, 8961, 9951, 9971 IP Phones. Noise-Canceling Headset. Quick Disconnect feature but its RJ-9 modular plug allows you to walk away from the phone while still wearing your headset.
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