E85 Information/Communication
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System functions
Telephoning
Accepting a call
A call is accepted by pressing the transmit-receive button in the
radio control panel or on the SBDH.
The GSM aerial receives a signal (call) and forwards this to the
TCU. In the TCU, the MUTE module switches the radio to mute.
If the radio is switched off, the signal "TEL ON" switches on the
radio. From the TCU, a sound signal is output across the audio
system.
The call is accepted by pressing the transmit-receive button in
the radio control panel or on the SBDH.
Hands-free mode
The hands-free mode is activated when a call is accepted via
the transmit-receive button in the radio control panel.
At the same time, the digital full-duplex hands-free unit is
enabled. It is then possible to speak and listen simultaneously
(hands-free mode).
By means of voice input into the microphone, an LF signal is
sent to the TCU. In the TCU, the signal is forwarded to the
transmit/receive module and transmitted via the GSM aerial.
Making a call on the SBDH (Privacy Mode)
If a call is accepted using the transmit-receive button on the
SBDH when lifted, the hands-free system is switched off.
If the call is accepted on the SBDH and then the user speaks
into the microphone of the SBDH, the voice transmission takes
place through the integrated Bluetooth interface to the
Bluetooth aerial in the vehicle and to the TCU (Privacy Mode).
The received signal is sent by the transmit/receive module to the
Bluetooth module, sent across the Bluetooth aerial to the SBDH,
and output across the loudspeaker in the SBDH.
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