Telephone mode, function - GF82.85-P-2007C

MODEL 215, 220 with CODE (352) COMAND operating and display system with CODE (494) USA version

Fig 1: Telephone Mode Function Diagram

Valid up to 31.8.02

Block diagram for COMAND telephone system, shown on model 220 with the following equipment:

Code (810) Sound system
Code (813) Voice control system (VCS)

On vehicles as of 1.9.03, all audio signals of the audio components, voice signals as well as the signals of the navigation processor (N41/1) are transmitted via the Media Oriented System Transport (MOST).

On vehicles as of 1.9.03, the navigation processor (N41/1) is installed as a separate control unit in the left of the engine compartment.

On vehicles as of 1.9.03, the audio gateway control unit (N93/1) is also installed as an interface between the Controller Area Network bus class B (interior) (CAN-B) and the MOST. The audio signals are then sent to the audio gateway control unit (N93/1) and output via the vehicle speakers.

The telephone system can be operated directly at the COMAND operating, display and control unit (A40/3n1) on the multifunction steering wheel (MFL) in combination with the multifunction display (A1p13) of the instrument cluster (A1) or via voice command (optional).

Making a call, function

The data telegrams (e.g. dial telephone number) for operating the telephone system are forwarded from the COMAND operating, display and control unit (A40/3n1) over the Digital Data Bus (D2B) to the portable CTEL D2B interface (A59/1).

The portable CTEL D2B interface (A59/1) transmits the data telegrams via a separate interface to the portable CTEL (A34/6). The actual telephone connection is made over the portable CTEL (A34/6) and the telephone antenna (A2/49a1) (on model 220) or the telephone antenna (A2/22) (on model 215).

The telephone antenna (A2/49a1) (on model 220) and the telephone antenna (A2/22) (on model 215) are each connected to the E-call control unit (A35/8).

If required, a high frequency relay integrated in the E-call control unit (A35/8) connects the telephone antenna (A2/49a1) (on model 220) or the telephone antenna (A2/22) (on model 215) to the portable CTEL (A34/6).

Handsfree conversation, function

The driver's voice is converted by the handsfree system microphone (B25) into a digital signal and sent by the portable CTEL D2B interface (A59/1) to the portable CTEL (A34/6).

The voice signals of the party called are forwarded by the portable CTEL D2B interface (A59/1) to the Digital Data Bus (D2B) and received by the audio component of the COMAND operating, display and control unit (A40/3). There the signals are amplified and output via the vehicle speakers.

The US vehicles are prepared for installation of Motorola TDMA, CDMA (V60) or GSM portable CTELs (V60i).

During a telephone call the audio signal is automatically muted.

If the vehicle is equipped with code (810) Sound system, the voice signals are picked up by the sound amplifier (A2/13), amplified and then output via the vehicle speakers.

The COMAND operating, display and control unit (A40/3) has the following telephone functions:

Direct dialing of a telephone number via the rotary switch or the numerical keypad, display of the name of the person called (provided that the entered number is known).
Speed dialing takes place by dialing the first 10 memory locations with only one key, dialing all further memory locations takes place by entering the 3-digit memory location number.
Locking the telephone system
Ability to sort the memory locations according to:
Memory location number
- Names
- The 10 numbers last dialed

	Telephone antenna, location/task	Model 215 With code (348) EMERGENCY CALL emergency call system	GF82.62-P-4105A
	GPS/telephone roof antenna location/task/design/function	Model 220 With code (347) TELE AID emergency call system (D2B) With code (352) COMAND operating and display system with code (353) Audio 30 APS with code (853) MB standard telephone with code (854) MB portable CTEL telephone With code (855) TELE AID	GF82.70-P-4111A