GF82.70-P-0003CB Telephone (D Network) Function

GF82.70-P-0003CB Telephone (D Network) Function
- with CODE (853) MB standard telephone

Permanently installed telephone, function
Installation differs according to model and equipment ( multifunction steering wheel, voice control system ), a prerequisite being that the system is ready for operation (switched on) after entering the PIN and logging in. If the CTEL is not required, then it switches into standby mode. The telephone is switched on and off by the vehicle head unit (COMAND, radio).

The telephone transmitter/receiver is connected to the vehicle optical data bus (D2B) just as is the head unit.

The physical connection is accomplished over an adapter ( D2B interface).

In the 1st generation of the fixed telephone system with D2B capability (as of 1.6.98) the D2B interface for fixed installation telephone (A59) is physically separated from the transmitter/receiver (A35) in the vehicle.

From the 2nd generation onward (as of 1.6.00) the interface is integrated in the D2B telephone transmitter/receiver (A35/13).

Calls are made via the telephone antenna.
Differences in antennae in the CTEL systems are a consequence of vehicle-specific conditions (convertible, sedan, T-model etc.). This means that different car antennas, speakers, etc. have to be used, and depending on the type of (vehicle) antenna and equipment, the antenna splitter (A28/1) may be required.

On all models, there is the facility of being able to hold conversation via the hands-free system of the vehicle which is beneficial to driving safety. In this case, the call is made via the hands-free system microphone (B25) and the hands-free system speaker , and the handset remains in the cradle.

The handset display shows a series of messages that provide the user with information about the operating condition (e.g. menu selection) of the telephone.

In vehicles with a multifunction display, information also appears on the instrument cluster multifunction display that informs the user of the operating condition of the telephone system.

The volume of the loudspeaker on the handset and therefore also of the hands-free system can be adjusted individually by the user at the handset or the multifunction steering wheel (if present).

To ensure user voice input which is as clear as possible via the hands-free system microphone, the volume of the audio source (radio, COMAND) switched on is reduced automatically during a call.

Additional information is contained in the applicable operating instructions.