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Home >> Mercedes Benz >> 2003 >> CL55 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Electrical System -- Basic Knowledge -- 215 & 220 Chassis - 2 Of 2 >> Basic Knowledge >> Optical waveguide interface, location/task/design/function - GF82.70-P-3106 >> Optical waveguide interface, location/task/design/function - GF82.70-P-3106B >> Optical waveguide interface, function - GF82.70-P-3106-04B
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Optical waveguide interface, function - GF82.70-P-3106-04B

Models 215, 220 with code 316 

The D2B interface for fixed CTEL installation (A59) is switched on or off via a discrete "wake-up" line. It responds to the negative edge of the pulse (in rest state the level is at "high") and the duration of the "Wake-up" signal.

The COMAND operating, display and control module (A40/3n1) transmits control data via the D2B to theD2B interface for fixed CTEL installation (A59). From there the incoming control data are passed on to the CTEL transmitter/receiver using discrete data lines (A35). The D2B interface for fixed CTEL installation (A59) switches the CTEL transmitter / receiver (A35) on or off and conveys the functions to be performed (e.g. select call number).

Vice versa the data (caller's voice, control data) of the CTEL transmitter / receiver (A35) from the D2B interface for fixed CTEL installation (A59) are transmitted in a corresponding D2B format and passed on for further processing to the COMAND operating, display and control module (A40/3n1).

Transmission of the traffic news on the Traffic Message Channel (TMC) (with dynamic route guidance only (code 815)):

The TMC traffic messages are received from the CTEL transmitter / receiver (A35) and transmitted to fixed CTEL installation D2B interface (A59). The data are converted there and passed on to the traffic data recorder (A2/43) via the RB-CAN.