- Control unit
The DIS-CCU central control unit is the centerpiece of the digital discussion system and the digital conference system. It distributes digital audio, control data, and power to chairman, delegate, and interpreter units over a standard shielded CAT 5e (or higher) cable in serial 'daisy-chain' topology, using the proprietary DCS-LAN protocol. The DIS-CCU features 2 analog audio inputs for external audio sources, and 8 analog audio outputs for connection to a videoconferencing system, audio/video recorder, sound reinforcement system, or wireless language distribution system. The DIS-CCU distributes the 'floor' audio mix plus interpretation channels to each discussion or conference unit. Up to 8 microphones may be active simultaneously. Four different microphone operating modes are supported: automatic, first-in/first-on (FIFO), VOX (voice activated), and manual.