Yealink MP54 E2 Teams Phones. Presenting a standalone voice solution and unparalleled audio clarity, the MP54 E2 is armed with Yealink's Optima HD Voice and Yealink Noise Proof Technology. Moreover, MP54 E2 makes collaboration easier than ever thanks to its support for SIP & Teams Hybrid mode, and its support for WiFi, Bluetooth, and a USB headset.