Notes on D2B ring - AH82.70-P-0001-03B

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MODEL 210.2 as of 7/1/98 with CODE 316 (MB D-net telephone (D2B)) with CODE 347 (TELE AID emergency call system (D2B)) without CODE 317 (D-net portable CTEL (D2B)) without CODE 351 (Auto Pilot System (APS)) without CODE 813 (Voice control system (VCS [SBS]))

The components in the D2B ring (station components) in this case are: - Radio (A2)
- Telephone interface (A34/4) or TELE AID control unit (A35/8)
The information in the D2B ring only flows in one direction (arrows). The information enters in the white insert (white) in a optical fiber module M1 and M2 and exits again in the red insert (red) at the next ring component. The D2B ring only is capable of functioning as a closed circuit.

Fig 1: Identifying Radio Communication Diagram
Courtesy of MERCEDES-BENZ USA
The telephone interface (A34/4) or the TELE AID control unit (A35/8) is installed in the left rear.
Before the D2B ring can be expanded it is first necessary to determine the current vehicle configuration

Fig 2: Identifying TELE AID Control Unit And Telephone Interface
Courtesy of MERCEDES-BENZ USA

Actual configuration in vehicle

Print out the actual configuration and use as conversion template.

Fig 3: TELE AID Control Unit And Telephone Interface Configuration Diagram
Courtesy of MERCEDES-BENZ USA