Home/Office Headset for Polycom IP 320,IP 330,IP321,IP331,Cisco SPA, AT&T, VTech and All phones with 2.5mm Headset Port - AliExpress
IP&Go - 100% VoIP - IP Phones - Polycom VVX 410
Amazon.com: OvisLink Polycom SoundPoint Phone Headset | Dual Ear Noise Canceling Call Center Headset Compatible with Polycom SoundPoint IP Phones with 2.5mm Headset Jack | Premium Voice Quality | Durable : Electronics
Amazon.com: INNOTALK Wireless Headset Compatible with Poly Polycom VVX300, VVX310, VVX400, VVX410 and Any VVX Model with EHS Remote Answering Cord Bundle(Pioneer) : Electronics
Plantronics CS540 Wireless Headset Package for Polycom IP Phones
Polycom VVX 201 IP Phone (2200-40450-025) – Atlas Phones
Wantek Phone Headset for Office,2.5mm Headset for Call Center,Compatible with Cisco IP 7985,Polycom IP320,Grandstream GXP-2010,Panasonic KX-NT136,Gigaset C610,Dual - Newegg.com
Plantronics Savi 8210 UC Wireless Headset Package for Polycom IP Phones
Polycom VVX 350 Mid Range IP Phone with Plantronics CS540 Cordless Headset - Newegg.com