User's Manual

User Manual
40
en
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Control mute of an external device. Audio will be disabled during voice calls.
- Ignition control controls the switching off of the terminal depending on the status of the
vehicle’s engine.
- Control of external horn relay enables the MDT-400 to activate an external relay for the
horn of the car or any other device.
This option is incompatible with the Control mute option.
- Line interface provides the terminal with a balanced audio input and output as well as
two additional basic signalling lines (one input line ‘E’ and one output line ‘M’).
This option is incompatible with the Control ignition option.