Headset Adapter Co. - Bluetooth Headset Kit for Cisco IP Phones
Cisco Headset Adapter - Support
Cisco Headset 730, Wireless Dual On-Ear Bluetooth Headset with Case, USB-A HD Bluetooth Adapter, USB-A and 3.5 mm Cables, Carbon Black, 1-Year Limited Liability Warranty (HS-WL-730-BUNA-C): Amazon.co.uk: Computers & Accessories
Cisco IP Phone 7800 and 8800 Series Accessories Guide for Cisco Unified Communications Manager - Headsets [Cisco IP Phone 7800 Series] - Cisco
Shouki - Cisco QD USB-C Headset Adapter (optional accessory) for 530 Series
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
Cisco Headset Adapter | PC Headset Adapter for Cisco IP Phones - YouTube
Cisco IP Phone 8851 - Cisco
Cisco IP Phone 8851 - Cisco
Cisco - IP Phones with Bluetooth | Onedirect.co.uk