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Home >> Mercedes Benz >> 2011 >> E 350 BLUETEC (212.024) V6-3.0L DSL Turbo (642.850) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Cellular Phone >> Description and Operation >> GF82.70-P-0007FLK Mobile Phone System, Function >> Part 2 of 2

Part 2 of 2



Establish telephone call in hands-free mode
The voice input in hands-free mode is picked up by the hands-free system microphone and forwarded to the COMAND controller unit via a direct line. The voice input is then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

The voice output is forwarded by the COMAND controller unit in vehicles with code (810) Sound system by means of audio signals to the sound system amplifier control unit via MOST. From there, the audio signal is transmitted to the following speakers over direct lines:
- Center instrument panel speaker
- Left rear surround speaker
- Right rear surround speaker
- Left front door sound system tweeter
- Right front door sound system tweeter
- Left rear door sound system tweeter
- Right rear door sound system tweeter
- Left front door sound system midrange and bass speaker
- Right front door sound system midrange and bass speaker
- Left rear door sound system midrange speaker
- Right rear door sound system midrange speaker

For the bass speaker, the audio signals are routed via MOST from the COMAND controller unit to the sound system amplifier control unit and from there to the bass speaker via the rear bass speaker amplifier using direct lines.

On vehicles without code (810) Sound system, the audio signals are output directly by the COMAND controller unit to the following speakers:
- Left front door speaker
- Left front door tweeter
- Right front door speaker
- Right front door tweeter
- Left rear door speaker
- Left rear door tweeter
- Right rear door speaker
- Right rear door tweeter

Terminating a telephone call
After a phone call has been terminated, the mobile phone interrupts the transmission or reception of the mobile phone signals or data. This takes place internally in the mobile phone.

Accepting calls, rejecting calls and toggling
The mobile phone can be used by the user to initiate, terminate or toggle a telephone call to another person in the cellular telephone system network or in the fixed-line network. It is possible to accept, reject or toggle a call using the following components:
- Buttons on the mobile phone
- Telephone buttons or keypad on COMAND controller unit
- Left multifunction steering wheel button group and right multifunction steering wheel button group

The accept call, reject call and toggle functions consist of the following subfunctions:
^ Call signal
^ Call acceptance or rejection via the buttons on the mobile phone
^ Call acceptance or rejection via the function keys at the COMAND controller unit
^ Call acceptance or rejection via the Audio/COMAND control panel
^ Call acceptance or rejection via left multifunction steering wheel button group and right multifunction steering wheel button group
^ Telephone call in hands-free mode
^ Toggling via the keys at the mobile phone
^ Toggling via the function keys at the COMAND controller unit
^ Toggling via the Audio/COMAND control panel
^ Toggling via the left multifunction steering wheel button group and the right multifunction steering wheel button group

Call signal
The mobile phone receives the call signal via the mobile phone antenna. The call signal is then forwarded to the COMAND controller unit in the via the following route:
- Bluetooth antenna
- Direct line

From there, the ring tone is transmitted via direct lines to the following speakers:
- Center instrument panel speaker
- Left rear surround speaker
- Right rear surround speaker
- Left front door sound system tweeter
- Right front door sound system tweeter
- Left rear door sound system tweeter
- Right rear door sound system tweeter
- Left front door sound system midrange and bass speaker
- Right front door sound system midrange and bass speaker
- Left rear door sound system midrange speaker
- Right rear door sound system midrange speaker
- Left front door sound system midrange and bass speaker
- Right front door sound system midrange and bass speaker
- Left rear door sound system midrange speaker
- Right rear door sound system midrange speaker

For the bass speaker, the audio signal is routed via MOST from the COMAND controller unit to the sound system amplifier control unit and from there to the bass speaker via the rear bass speaker amplifier using direct lines.

On vehicles (without code (810) Sound system), the audio signal is output directly by the COMAND controller unit to the following speakers:
- Left front door speaker
- Left front door tweeter
- Right front door speaker
- Right front door tweeter
- Left rear door speaker
- Left rear door tweeter
- Right rear door speaker
- Right rear door tweeter

At the same time the COMAND controller unit reduces the volume of the currently active audio source (e.g. the radio) by L = 15 dB. The currently active audio source is not muted until the caller accepts the call (MUTE). This happens internally in the COMAND controller unit.

The call identification is sent by the COMAND controller unit via a LVDS line and shown on the Audio/COMAND display. The call identification is also shown via the interior CAN on the multifunction display (A1p13) in the instrument cluster.

Call acceptance or rejection via the buttons on the mobile phone
Pressing the "Accept call" button on the mobile phone serves to accept the call in hands-free mode. Pressing the "End" button on the mobile phone rejects the call. The control signals of the mobile phone buttons are internally processed and forwarded via the following route to the COMAND controller unit:
- Bluetooth antenna
- Direct line

Call acceptance or rejection via the function keys at the COMAND controller unit
When the "Accept phone call" button is pressed or the "Accept" function is selected in the "Telephone (Tel)" base function, the call is accepted in handsfree mode.
Pressing the "End" function key once or selecting the "Accept" function in the "Telephone (TEL)" base function via the function keys on the COMAND controller unit puts the call on hold.
Pressing the "END" function key twice or activating the "Reject" function in the "Telephone (TEL)" base function via the function keys on the COMAND controller unit rejects the call. The control signals of the function keys at the COMAND controller unit are processed internally and forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

Call acceptance or rejection via the Audio/COMAND control panel
The call identification is shown on the Audio/COMAND display by the COMAND controller unit via an LVDS line by means of the call signal.
Selecting the "Accept call" function using the Audio/COMAND control panel serves to accept the call in handsfree mode. By selecting the "Reject" function the call is then rejected.
The control signals from the Audio/COMAND control panel are forwarded over the telematics CAN to the COMAND controller unit. The control signals are then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

Call acceptance or rejection via left multifunction steering wheel button group and right multifunction steering wheel button group
The call is accepted or rejected in hands-free mode by pressing the accept/terminate phone call button in the corresponding subfield.
The control signal of the accept/terminate phone call button are forwarded over the following components to the COMAND controller unit:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column tube module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN

The control signals are then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

Telephone call in hands-free mode
A telephone call can be accepted via the VCS [SBS] by pressing the voice control system button. The voice control is not active during the call.

The control system of the voice control system ON button is forwarded as follows to the COMAND controller unit:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column tube module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN

The voice input in hands-free mode is recorded by the hands-free system microphone and forwarded via a direct line to the COMAND controller unit
The voice input is routed by the COMAND controller unit to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

The voice output is forwarded by the COMAND controller unit in vehicles with code (810) Sound system by means of audio signals to the sound system amplifier control unit via MOST.
From there, the audio signal is transmitted to the following speakers over direct lines:
- Center instrument panel speaker
- Left rear surround speaker
- Right rear surround speaker
- Left front door sound system tweeter
- Right front door sound system tweeter
- Left rear door sound system tweeter
- Right rear door sound system tweeter
- Left front door sound system midrange and bass speaker
- Right front door sound system midrange and bass speaker
- Left rear door sound system midrange speaker
- Right rear door sound system midrange speaker

For the bass speaker, the audio signals are routed via MOST from the COMAND controller unit to the sound system amplifier control unit and from there to the bass speaker via the rear bass speaker amplifier using direct lines.

On vehicles without code (810) Sound system, the audio signals are output directly by the COMAND controller unit to the following speakers:
- Left front door speaker
- Left front door tweeter
- Right front door speaker
- Right front door tweeter
- Left rear door speaker
- Left rear door tweeter
- Right rear door speaker
- Right rear door tweeter

Toggling via the keys at the mobile phone
If another call signal is received during a telephone call, this is shown on the Audio/COMAND display by the COMAND controller unit via an LVDS line. The telephone call can now be accepted or rejected via the buttons on the mobile phone.
The control signals of the mobile phone buttons are internally processed and forwarded via the following route to the COMAND controller unit:
- Bluetooth antenna
- Direct line

If the incoming call is accepted, it is activated in hands-free mode and the existing call is put on hold. If the incoming call is rejected, the existing call remains active in hands-free mode.

Toggling via the function keys at the COMAND controller unit
If another call signal is received during a telephone call then it is displayed by the COMAND controller unit over a low voltage differential signal line on the Audio/COMAND display. The telephone call can now be accepted or rejected using the function keys on the COMAND controller unit. The control signals from the function keys on the COMAND controller unit are processed internally. If the incoming call is accepted, it is activated in handsfree mode and the existing call is put on hold. If the incoming call is rejected, the existing call remains active in hands-free mode.

Toggling via the Audio/COMAND control panel
If another call signal is received during a telephone call then it is displayed by the COMAND controller unit over a low voltage differential signal line on the Audio/COMAND display. The telephone call can now be accepted or rejected via the Audio/ COMAND controller unit. The control signals from the Audio/ COMAND control panel are forwarded over the telematics CAN to the COMAND controller unit. If the incoming call is accepted, it is activated in hands-free mode and the existing call is put on hold. If the incoming call is rejected, the existing call remains active in hands-free mode.

Toggling via the left multifunction steering wheel button group and the right multifunction steering wheel button group
If another call signal is received during a telephone call, this is shown on the Audio/COMAND display by the COMAND controller unit via an LVDS line.

By pressing the accept/terminate phone call button in the corresponding subfield, the call can be accepted or rejected. The control signal of the accept/terminate phone call button is forwarded to the COMAND controller unit via the following components:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column tube module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN

If the incoming call is accepted, it is activated in hands-free mode and the existing call is put on hold. If the incoming call is rejected, the existing call remains active in hands-free mode.

Address book
The user can manage all the contact data in the address book view, edit, add, delete and create). The address book contains the address entries stored in the COMAND controller unit.
Address entries can only be removed by deleting individual entries or by deleting the entire address book. Data can also be transferred from other external devices (e.g. PDA, laptop, etc.) into the address book via the Bluetooth(R) interface of the mobile phone and the Bluetooth antenna.
"vCards" can also be transferred into the address book from an SD card via the Secure Digital (SD) card slot at the COMAND controller unit. These data are then permanently available as address entries.
Address-relevant mobile phone system applications can be directly started and supplied with the stored data via address book entries.

Address entries can contain the following:
- Names (surname and first name)
- "Yomigana field" (for phonetic entry of the name in "Katakana" syllabary)
- Postal addresses (private or business)
- Telephone numbers (private, business, fixed line network, mobile or car)
- Company name
- Geo position
- Notes

A total of 150 entries with voice commands (voice tags) is available for the voice control system. The call can be established via the VCS [SBS] for each entry with a completed "Yomigana field". The address entries stored in the COMAND controller unit are shown in the address book.
Read access to the phone book of the mobile phone is provided if the mobile phone supports the Bluetooth(R) Phonebook Access Profile (PBAP).

"Private mode"
When in "Private mode", the user can make a telephone call without other vehicle occupants being able to hear the conversation. When dialing using the buttons on the mobile phone, the telephone call is carried out in "Private Mode" if the mobile phone supports "Private Mode" and "Private Mode" has been activated.
After a telephone call has been accepted or established in hands- free mode, you can switch to "Private Mode" by activating "Private Mode" via the mobile phone if the mobile phone supports "Private Mode".

"Seamless switch"
"Seamless Switch" provides the following functionality:
- An existing telephone conversation can be continued in hands-free mode (e.g. when getting into the vehicle) if the COMAND controller unit is switched on and "private mode" is not activated on the mobile phone.
- An existing telephone conversation can be continued on the mobile phone if the COMAND controller unit is switched off.

With some Japanese mobile phones you can select how the mobile phone behaves if a connection is interrupted. If, for example, the "Switch off if connection is interrupted" setting is selected, "Seamless switch" cannot be activated because a brief connection interruption also occurs.





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