Yealink WHB630UC The WHB630UC-V1 is a DECT base for the Yealink WH63 UC DECT Convertible Headset. It runs on DECT 6.0 wireless technology with a wireless range of up to 120 metres when paired with the WH63. The WHB630UC-V1 DECT Base supports dual connection with both PC and IP Phone. The buttons allow for call control and switching between your phone and PC. This DECT charging base has a ringer to alert you when there is an incoming call and has visible light indicators to let you know if it is connected to a PC or a phone and indicates if the headset is muted.