FULL-DUPLEX SPEAKERPHONE: Whats the Difference Between Half Duplex and Full Duplex a full duplex speakerphone setup allows multiple users to communicate simultaneouslya half duplex system only allows one party to speak at any given time. Just like a walkie-talkie. Yealink CP700&CP900 support built-in full-duplex microphone . so calls sound their best on both ends compare with half duplex speakerphone of another brand in the market .SPEAK SMOOTH & HEAR CLEARMore than 2,000,000 users have a good conference experience with YEALINK, Redefine Your Workspace. 2 built-in noise-canceling microphones of YEALINK Bluetooth speakerphone set in a 360 array realize voice pickup could work for a business conference room of 6.5 feet*6.5 feet, and full-duplex audio solution ensures accessible and clearly meeting experience.SIMPLE SETUP & STABLE CONNECTION---YEALINK conference speakerphone could be connected via USB, Bluetooth, dongle without any extra IT required or drivers. Not only connect YEALINK conference speaker in Windows, macOS, plugging USB, but also smartphone, iPad, Samsung S7+ tablet work well by Bluetooth. YEALINK speaker and microphone for computer also have been Certified by Zoom, Microsoft Teams, whatsapp, Skype, etcIDEAL SOLUTION OF NOISE CANCELINGYealink Bluetooth speakerphone could eliminate background noise whether working in a shared or public workspace or office. Common noise at work such as air conditioning, mouse or keyboard click, desk and chair friction sound could be reduced efficiently with speaker phone so that the far-end attendees can enjoy the best communication. This mode is optional in YEALINK computer speakers with microphone to meet your different demands.