Buy Headset Adapter Cable Compatible with Cisco Phones Coil Cord to QD Modular Plug, Connecting Plantronics or MKJ Headsets Alternative to Plantronics U10 for 7841, 7942G, 8841, 7931G, 7821 etc Online in
2.5mm Headset to ONLY Cisco Phone Adapter - 2.5mm to RJ9/RJ10 Converte – DirectNine - Europe