Everything on this page is built for Microsoft Teams: native Teams IP phones like the Yealink MP54 and T56A and Poly CCX 500, plus Teams-certified headsets from Yealink and Poly — wireless DECT, Bluetooth, and USB wired. Teams-native phones run the Teams calling interface directly on the device and sign in with your Microsoft 365 credentials; certified headsets give you the dedicated Teams button and guaranteed audio compatibility. All refurbished, tested, and warrantied at a fraction of new pricing — which matters when you're putting Teams devices on dozens of desks. Check your Teams calling license, pick your hardware, and you're deployed.