InfoComm 2019: Yealink Shows CP900 USB Puck Speakerphone for Personal or Huddle Room Use June 14, 2019 | Home / June 14, 2019 rave-video / InfoComm 2019: Yealink Shows CP900 USB Puck Speakerphone for Personal or Huddle Room Use InfoComm 2019: Yealink Shows CP900 USB Puck Speakerphone for Personal or Huddle Room Use