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6
Fail-Over Modes
Unlike the DBX card, audio and communications (called control
1
) between frames is separated between the TBX-Tribus card
and the MCII-e Master Controller Card. Communication between frames using TBX-Tribus occurs using the MCII-e Master
Controller over Ethernet. Audio is passed between frames using the TBX-Tribus card fiber connection (see Figure 29 to
Figure 31).
Audio between frames exists as long as there is a single valid link between frames. There are three (3) types of system
configurations:
• Full Redundancy
• Partial Redundancy
• Non-Redundancy
1. Control is the ability to talk to keypanels and act on key presses.