Axtel ELITE Duo Headset For Cisco IP Phones – Shop4Tele
RJ9 plug headset for CISCO IP phone Call center office headset for Cisco IP Telephone 7821 7841 7861 8841 7940 7961 9961 etc - AliExpress
Amazon.com: Yealink Phone Headsets for Office Phones YHS34 Lite QD to RJ9 Wired Headset Compatible with Cisco Desk Phones 8800/7800/7900/6945 Series Landline VoIP Headset with Microphone -Mono/72g/2.1m Cable : Electronics
Cisco Headset 562 - Wireless, Dual, Multibase Station (CP-HS-WL-562-M-US=)
PLANTRONICS HW520-SPA Cisco IP Phone Headset
PLANTRONICS HW720-CIS Binaural Noise Canceling Cisco IP Phone Headset
Cisco Unified Phone compatible Call Center headsets by With RJ9 Quick Disconnect bottom cord. Noise canceling, HD voice, connect direct to Cisco phone's headset jack. Lightweight and comfortable to wear for all