Telephone operation, function

Data link connector (X11/4)

Navigation processor

Voice control system control module (A35/11)

Portable CTEL
D2B interface (A59/1)

Portable cellular telephone (A34/6)

Amplifier for
sound system
(N40/3)

CTEL antenna
(A2/49a1)

Instrument cluster (A1)

-Multifunction steering wheel

CAN
(A40/3-A1)

D2B

Diagnosis

Radio tuner

Traffic data
memory (A2/43)

AF signals

Audio
signal processing

Hands-free
microphone (B25)

Vehicle loudspeaker

CD drive

Central
processor

COMAND operating, display and control module (A340/3)

Block diagram for COMAND telephone system

Illustrated with the following equipment:

 Sound system (code 810)

 Voice control system (VCS) (code 813b)

AF Audio frequency (20 Hz ... 20 kHz)

The marked components are the components which are used primarily for telephone operation .

 D-network portable cellular telephone (D2B) (code 317)

Abbreviations:

D2B Digital data bus

The telephone system can be operated as follows:

 directly at the COMAND operating, display and control module (A40/3) or

 via the multifunction steering wheel in combination with the multifunction display in theinstrument cluster (A1) or

 via voice control (with code 813b)

The audio source is automatically muted during a telephone call. There are different telephone versions
(e.g. portable cellular telephone, permanently installed telephone, version in combination with TELE AID). The portable cellular telephone version (code 317) is described in detail in the following.

The radio telephone signals are transmitted and received by the CTEL and GPS roof antenna (A2/49) telephone component. When the telephone is in the ready status the display of the COMAND operating, display and control module (A40/3) shows the reception field strength in 5 stages.

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With all versions transmission of the control and audio signals (e.g. loudspeaker signals when the hands-free system is activated), is accomplished via the digital data bus D2B.. The portable cellular telephone (A34/6) therefore requires an interface to the D2B - the D2B portable cellular telephone interface (A59/1).

The COMAND operating, display and control module (A40/3n1) has the following telephone functions:

 Automatic blocking of the telephone card after entering the wrong Personal Identification Number (PIN) three times in succession.

 An emergency call can also be performed without PIN or with missing telephone card.

 Direct selection of the telephone number with the shaft encoder or number keypad, display of name of person called (when number entered is known).

 Speed call: Selection of first 10 memory locations with only one button, selection of all other memory locations by

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entering the 3-digit memory location number.

 Memory location sorting according to:
 Memory location number or
 name (alpha-numerical) or
 the10 numbers last selected.

 Display of incoming call number (if number is also transmitted via radio), display of name of caller (if COMAND recognizes the number.

Status up to 31.05.01

With the new telephone generation (as of 06/00) additional services will be possible:

 Reading/erasing SMS (except)
Short messages (SMS) can be received.

 Call waiting
During a call incoming calls are indicated optically and acoustically.

 Line alternation
It is possible to change between two incoming calls.

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The party called can connect the calling party and thus terminate the call.

The functions"Call waiting" and "Line alternation" must be enabled by the provider.

 The letters below the numbers of the number pad are presently disabled (status 04/00).
It will be possible to send short messages (SMS) with the COMAND at a later time.

The new portable cellular telephone generation (Nokia, as of MY 06/00) is dual-band compatible, i.e.it can be used in the D as well as in the E-network.

SMS text messages, supplement as of 01.06.01 (except )

Requirement: TeleAid connection(MINNA/HANNA) or
telephone adapter (via D2B)

- Writing SMS

- Processing SMS

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Writing/processingSMS is only possible when SMS messages are present in the buffer. Enter the characters with the "speller" or with 12-key keypad (analog to the portable cellular telephone). The letters on the number pad are enabled.

This function also includes transmitting the SMS, the receiver can be specified or selected from the telephone book .

SMS buffer data security

If the power supply is interrupted the characters present in the buffer remain stored.

However, up to 4 characters may be lost.

With controlled switch-off characters are not lost.

Controlled/uncontrolled switch-on

After switching on again, the basic telephone display appears. This allows to display the SMA main menu via the menu point "SMS" In theSMS main menu, select Process SMS and continue editing procedure in the "speller".