Plantronics CS540 Wireless Headset Package for Cisco SPA512G, SPA514G. SPA525G, and SPA525G2 IP Phones
NEC Compatible Jabra PRO 920 Wireless Headset System | 920-65-508-105 | For NEC IP Phones- Console, Elite, Mark, Dterm, ITL, DT300, DT700
PLANTRONICS HW720-CIS Binaural Noise Canceling Cisco IP Phone Headset
Sennheiser CC 520 Binaural Headset - IP Phone Warehouse
Amazon.com: MAIRDI Phone Headset with Microphone Noise Canceling, with RJ9 & 3.5mm Jacks for Multiple Devices, Office Headset for Call Center Telephone, Work for Yeaklink IP Phone Landline Cell Phone PC Laptop :
Yealink YHS34 Mono Wideband Wired Headset for IP Phones — Baltic Networks
Yealink YHS33 IP Phone Headset – VoIP International