Amazon.com: INNOTALK Headset Compatible with Cisco 7821 7841 7861 7931 7940 7941 7942 7945, Best Professional Monaural Headset with Noise Cancel Mic and Headset Adapter : Electronics
Volume and Mute Microphone For Cisco IP Phones 7940 7942 7945 7960 7821 7962 7965 7970 8841 9961 etc and M12, M22 Amplifiers|Headphone/Headset| - AliExpress
Cisco Compatible Jabra BIZ 2410 Direct Connect headset with smart cord, 13530-14511
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Call Center Headset with Mic for Cisco Unified Telephone IP Phone 7940 7942 7960 | eBay
Cisco IP Phone 7942/7942G Wireless Headset - Jabra PRO920
Arama Cisco Phone Headset with Noise Canceling Microphone Mute Switch Telephone Headset Compatible with Cisco IP Phones: 6941, 7
Cisco 7942 / 7942G IP Phone Wireless Headset - Jabra PRO920 Duo
OvisLink Call Center headset Compatible with Cisco Unified phones. With RJ9 Quick Disconnect bottom cord. Noise cancellation. HD voice. Comfortable for all day. Durable. 2 Year Warranty
Plantronics Wireless Headset for Cisco IP Phones CP-7945G and CP-7942G
Cisco Phone compatible Jabra GN2110 ST Direct Connect Headset for Cisco IP phones: 6921, 6941, 6945, 6961, 7821, 7841, 7861, 7932g, 7931, 7942g, 7945g, 7960g, 7965g, 7971g, 7975g, 7985g, 8811, 8841, 8845, 8851, 8861, 8865, 8941, 8945, 8961