The Poly CA22CD cordless PTT (Push-To-Talk) headset adapter provides wireless communications and PTT functionality for public safety dispatch, air traffic control, radio dispatch operations, and training simulation. This ultra-secure DECT wireless adapter is the perfect choice anywhere sensitive communications happen. Relax knowing conversations are protected - designed to meet the highest-level DECT security Step C requirements. The CA22CD works with analog or USB interfaces, with options for one or two independent receive channels. Customizable configurations adapt to fit your communications network whether it's analog or VoIP/RoIP.