GF82.70-P-0007CAK Mobile Phone System, Function

GF82.70-P-0007CAK Mobile Phone System, Function
MODEL 207.3 /4
- with CODE (527) COMAND APS with single DVD drive (with navigation)
- with CODE (498) Japan version as of model year 2011 /YoM 10

Function requirements for mobile phone system, general
^ Circuit 30g ON
^ A mobile telephone network available in adequate strength and quality
^ Mobile phone with Bluetooth capability in vehicle and authorized at the COMAND controller unit (A40/3)
In order to be able to operate a Bluetooth-compatible mobile phone that is authorized on the COMAND controller unit in the vehicle, the mobile phone must support hands-free profile (HFP) 1.0 or 1.5. More information can be found at: http://www.mercedes-benz.com/connect

Mobile telephone system, general
For simple and fast integration of a mobile phone into the vehicle, the COMAND controller unit supports the Bluetooth(R) standardized network technology. Bluetooth(R) is a worldwide open standard for connecting Bluetooth(R) devices (e.g. mobile phone) wirelessly and is based on radio technology in the 2.4 gigahertz (GHz) range. One advantage of Bluetooth(R), in addition to the wide availability of Bluetooth(R) devices, is the uncomplicated and spontaneous connection of Bluetooth(R) devices to a Bluetooth(R) network (ad-hoc network). The extremely high data security (128-bit encoding) and the relatively limited radius (approx. 10 m) of this type of Bluetooth(R) network are what makes the use of Bluetooth(R) in the vehicle interesting.
The COMAND controller unit can integrate the latest-generation mobile phones via the Bluetooth(R) interface of the mobile phone and the Bluetooth antenna (A2/91) into the vehicle hierarchy.
If no mobile phone is authorized via Bluetooth(R) at the COMAND controller unit, a search can be performed via the COMAND controller unit for Bluetooth-compatible devices. If Bluetooth(R) devices were found, the user is notified of all the Bluetooth(R) devices listed in terms of trustworthiness ("trust" or "untrust"). The user can then authorize available Bluetooth(R) devices (log on), interrupt connections to trustworthy Bluetooth(R) devices or deauthorize Bluetooth(R) devices.
Devices connected via Bluetooth(R) can also be used for audio applications. A precondition for this is that the Bluetooth(R) devices support the corresponding profiles. If the telephone currently connected does not support the profiles for the audio applications, the connection to the telephone is disconnected by connecting an audio source via Bluetooth(R).
Further information can be found in the description of the audio mode.
The mobile phone system includes the following processes:
^ Switching on and off characteristics
^ Establishing call and terminating call
^ Accepting calls, rejecting calls and toggling
^ Address book
^ "Private Mode"
^ "Seamless Switch"
The new features in the telephone system as of 1.7.2011 are summarized at the end of this document.

Switching on and off characteristics
A mobile phone operated with Bluetooth(R) can be switched on and off only with the buttons on the mobile phone itself. A mobile phone operated with Bluetooth(R) processes the switch-on signal internally in the mobile phone. The lock code inquiry is only shown on the display of the mobile phone, if configured on the mobile phone and if the mobile phone transmits this status. The lock-code can only be entered using the mobile phone buttons. The reception status is received by the mobile phone's antenna.
The display of the lock-code and the reception status as well as the signals of the mobile phone buttons are processed internally in the mobile phone.
The switch-off signal via the mobile phone button is processed internally in the mobile phone. If the rechargeable battery of the mobile phone is empty, the mobile phone is also switched off. This process also runs internally in the mobile phone.
As soon as the mobile phone has logged into the service provider's mobile telephone network, the receive status appears in the audio/ COMAND display (A40/8).
In order to display the receive status the mobile phone transmits the relevant signals to the COMAND control unit via the following route:
- Bluetooth antenna
- Direct line
- COMAND controller unit
The COMAND controller unit then actuates the Audio/COMAND display via a low voltage differential signal (LVDS) line.

Function requirements for establishing and terminating a call
^ Mobile phone and COMAND controller unit are switched on
With a mobile phone operated via Bluetooth(R), read access to the phonebook of the mobile phone is possible if the mobile phone supports the Bluetooth(R) Phonebook Access Profile (PBAP).

Establishing call and terminating call
The following components are available for operating the mobile phone system:
- Control buttons on the mobile phone
- Function keys and keypad on the COMAND controller unit
- Audio/COMAND control panel (A40/9)
- Left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111)
- Voice control system (VCS [SBS])
Telephone calls can be made in handsfree mode or "Private Mode". In hands-free mode, audio output takes place via the speaker system of the vehicle. Currently active audio sources are muted (MUTE).
On vehicles without code (810) Sound system, the corresponding audio signals are output over the following speakers:
- Left door tweeter (H4/1h1)
- Left door bass speaker (H4/1h2)
- Right door tweeter (H4/2h1)
- Right door bass speaker (H4/2h2)
On vehicles with code (810) Sound system the COMAND control unit transmits the audio signals via media-oriented system transport (MOST) to the sound system amplifier control unit (N40/3), which amplifies and output them over the following speakers:
- Door tweeter
- Door bass speaker
- Center instrument panel speaker (H4/27)
In "Private mode" the user makes a telephone call without other vehicle occupants being able to take part in the telephone call, i.e. voice input takes place via the microphone integrated into the mobile phone, voice output occurs over the speaker integrated into the mobile phone.
The establish call and terminate call function consists of the following component functions:
^ Establishing a call
^ Terminating a call

Call set-up
A telephone connection is set up by entering or selecting a phone number and then dialing.
The telephone number can be entered or selected as follows:
- Manual entry or voice input
- Selection from call list
- Selection from address book
A telephone number can be entered as follows:
- Control buttons on the mobile phone
- Keypad on the COMAND controller unit
- Audio/COMAND control panel
- Multifunction steering wheel button groups
- Voice input via VCS [SBS]
A speed dial list will also be available as of 1.7.2011. From the Call Lists menu, the number keys on the COMAND controller unit can each be assigned a telephone number.
Extended pressing of one of the buttons (approx. 2 s) dials the stored telephone number and a connection is established.
When entries are made via the control buttons on the mobile phone, the mobile phone processes the control signals internally.
When entries are made via the keypad on the COMAND controller unit, the control signals are forwarded to the mobile phone via the Bluetooth antenna:
To enter the telephone number via the Audio/COMAND control panel, the "TEL" base function must be started. The "TEL" basic function is called up by pressing the "TEL" function key on the COMAND controller unit. The corresponding basic mask appears.
The "TEL" base function can also be called up via the "TEL" menu in the application bar.
The telephone number can now be entered or selected as follows:
- Manual entry via the Speller that is provided in the audio/ COMAND display
- Selection from call list, "List" submenu
- Selection from address book, "Address book" submenu
The control signals from the Audio/COMAND control panel are forwarded to the COMAND controller unit via the telematics CAN (CAN A).
The COMAND controller unit forwards the control signals to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
The address book can also be selected by pressing the system selection (S110s3) button via the "Tel" menu in the instrument cluster (A1).
The name of the person to be called is selected by scrolling forward and back using the scroll forward/back button (S110s1).
The telephone call is set up by pressing the accept/terminate phone call button (S111s3).
The control signals of the multifunction steering wheel button groups are forwarded over the following components to the COMAND controller unit:
- Direct line
- Steering wheel electronics (N135)
- Steering LIN (LIN E1)
- Steering column module control unit (N80)
- Chassis CAN (CAN-E)
- Instrument cluster
- Interior CAN (CAN B)
The data that is required for displaying in the multifunction display (A1p13) in the instrument cluster is transmitted by the COMAND controller unit to the instrument cluster via the interior CAN.
The voice input via VCS [SBS] function is activated by pressing the voice control system ON button (S111s4). A signal tone is emitted after the voice control system has been activated.
Now the telephone number can be spoken or selected from the address book or the call list.
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 setup of the call is activated in the dialogue using voice commands. The voice commands are recorded by the handsfree system microphone (A67b1) and forwarded via a direct line to the COMAND controller unit. The voice commands are then forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

Terminating a call
The phone call can be terminated as follows:
- Terminate via control buttons on the mobile phone
- Terminate via function keys on the COMAND controller unit
- Terminate via Audio/COMAND control panel
- Terminate via multifunction steering wheel button groups
Pressing the "Hang up" control button on the mobile phone terminates the telephone call. The control signal of the "Hang up" control button is processed internally by the mobile phone.
Pressing the "Hang up" function key on the COMAND controller unit terminates the telephone call. The control signal of the "Hang up" function key is processed internally by the COMAND controller unit.
The COMAND controller unit sends the control signal of the "Hang up" function key to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
Selecting the "Terminate call" pictogram and then confirming it on the Audio/COMAND control panel ends the telephone call. The relevant control signals are transmitted to the COMAND controller unit by the audio/COMAND control panel via the telematics CAN.
The COMAND controller unit forwards these to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
Pressing the button on the accept/terminate phone call button on the multifunction steering wheel terminates a phone call. The control signal of the right multifunction steering wheel button group 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
The control signals are routed by the COMAND controller unit to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

Accepting calls, rejecting calls and toggling
The user can set up a telephone connection for initiating, terminating or toggling a call to another person in the cellular telephone system or fixed-line network. The following components are available for operating the mobile phone system:
- Control buttons on the mobile phone
- Function keys on the COMAND controller unit
- Audio/COMAND control panel
- Right multifunction steering wheel button group
- Voice control of the VCS [SBS] (only when accepting a call)
The caller is shown on the display of the mobile phone and the information is forwarded simultaneously in the following way to the COMAND controller unit:
- Mobile phone antenna
- Bluetooth antenna
- Direct line
Incoming calls are signaled acoustically over the speaker system and visually in the Audio/COMAND display as well as in the multifunction display of the instrument cluster.
When the phone call signal sounds, the COMAND controller unit reduces the volume of the currently active audio source (e.g. for radio mode) by L = 15 dB. Only after the call has been accepted, the COMAND controller unit mutes (MUTE) the currently active audio source.
The COMAND controller unit actuates the Audio/COMAND display via LVDS line.
The data required for displaying in the multifunction display are sent by the COMAND controller unit to the instrument cluster via the interior CAN.
Telephone calls can be made in handsfree mode or "Private Mode". In hands-free mode, audio output takes place via the speaker system of the vehicle. The currently active audio source is muted (MUTE).
On vehicles without code (810) Sound system, the corresponding audio signals are output at the following speakers via direct lines:
- Left door tweeter
- Left door bass speaker
- Right door tweeter
- Right door bass speaker
On vehicles with code (810) Sound system, the COMAND controller unit sends the audio signals via MOST to the sound system amplifier control unit, which amplifies them and outputs them over the following speakers:
- Door tweeter
- Door bass speaker
- Center instrument panel speaker
After the telephone call has been accepted 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". When in "private mode" the user can make a telephone call without other vehicle occupants being able to hear the conversation. The hands-free mode is deactivated for this time.
The accept call and reject call function is made up of the following subfunctions:
^ Accepting a call
^ Control for call waiting, toggling
^ Rejecting a call

Accepting a call
A telephone call can be accepted using the following controls:
- Control buttons on the mobile phone
- Function keys on the COMAND controller unit
- Audio/COMAND control panel
- Right multifunction steering wheel button group
- Voice input via VCS [SBS]
A telephone call can be accepted on the mobile phone by pressing the "Accept" control button on the mobile phone. The control signal is processed internally in the mobile phone.
Pressing the "accept phone call" button on the mobile phone accepts a telephone call via the mobile phone and the call is accepted in hands-free mode. The control signals of the buttons on the mobile phone are processed internally and forwarded to the COMAND controller unit via the following route:
- Bluetooth antenna
- Direct line
Press the "Accept" function key on the COMAND controller unit to accept a telephone call via the COMAND controller unit.
The control signal is internally processed by the COMAND controller unit and forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
A telephone call can be accepted through the Audio/COMAND control panel by selecting the "Accept" field.
The Audio/COMAND control panel sends the control signal over the telematics CAN (CAN A) to the COMAND controller unit. The COMAND controller unit then routes the control signal to the mobile phone in the following manner:
- Direct line
- Bluetooth antenna
Press the right button on the accept/terminate phone call button to accept a telephone call via the right multifunction steering wheel button group.
The control signals of the accept/terminate phone call button are forwarded to the COMAND controller unit via the following route:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column tube module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN
The COMAND controller unit then routes the control signal to the mobile phone in the following manner:
- Direct line
- Bluetooth antenna
The instrument cluster shows information on the caller, if the "Tel" menu was activated beforehand.
Press the voice control system on button in hands-free mode to accept a telephone call via the VCS [SBS].
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 control is not active during the call.

Control for call waiting, toggling
If another call signal is received during a telephone call, this is shown on the Audio/COMAND display by the audio unit over an LVDS line. The telephone call can now be accepted or rejected.
If the incoming call is accepted, it is activated in hands-free mode and the existing call is terminated.
As of 1.7.2011 the user has the option of toggling between two callers, presuming that the mobile phone connected to the audio equipment is a "Full Function Portable". While the user talks to one person on the line, the connection to the other is put on hold.
However, voice transmission is interrupted.
This function can be controlled using the following components:
- Control buttons on the mobile phone
- Function keys on the COMAND controller unit
- Audio/COMAND control panel
- Right multifunction steering wheel button group
The control signals of the mobile phone's control buttons are internally processed and forwarded to the COMAND controller unit via the following route:
- Bluetooth antenna
- Direct line
- COMAND controller unit
The control signals of the function keys on the COMAND controller unit are processed internally by the COMAND controller unit and forwarded to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
The toggle function can be operated using the Audio/COMAND control panel by selecting the "Accept" or "Reject" field. The Audio/ COMAND control panel sends the control signals over the telematics CAN (CAN A) to the COMAND controller unit. The COMAND controller unit forwards the control signals to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
The control signals of the accept/terminate phone call button are forwarded to the COMAND controller unit via the following route:
- Direct line
- Steering wheel electronics
- Steering LIN
- Steering column tube module control unit
- Chassis CAN
- Instrument cluster
- Interior CAN
The COMAND controller unit forwards the control signals to the mobile phone via the following route:
- Direct line
- Bluetooth antenna

Rejecting a call
An incoming phone call can be rejected using the following controls:
- Control buttons on the mobile phone
- Function keys on the COMAND controller unit
- Audio/COMAND control panel
- Right multifunction steering wheel button group
Pressing the "Hang up" control button on the mobile phone rejects the incoming phone call. The control signal of the "Hang up" control button is processed internally by the mobile phone.
Pressing the "Hang up" function key on the COMAND controller unit rejects an incoming phone call. The control signal of the "Hang up" function key is processed internally by the COMAND controller unit.
The COMAND controller unit then sends the control signal to the mobile phone via the following route:
- Direct line
- Bluetooth antenna
Selecting the "Reject" field and then confirming it on the Audio/ COMAND control panel rejects an incoming phone call. The Audio/ COMAND control panel sends the control signal over the telematics CAN (CAN A) to the COMAND controller unit. The COMAND controller unit then routes the control signal to the mobile phone in the following manner:
- Direct line
- Bluetooth antenna

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. In addition, vCards can be transferred to the address book from a memory card using the SD memory card reader in the COMAND controller unit. These data are then permanently available as address entries.
As of 1.7.2011 address data can also be received via the USB electrical connector (X115).
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
- Phone numbers
- Company name
- Geo position
- Notes
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 handsfree 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.

New products/features as of 1.7.2011
^ If the mobile phone is in the Full Function Portable (FFP) status, an active call is held while another call is responded to, and it is then possible to toggle between the two calls using the COMAND controller unit.
^ The speed dialing list can be used to store up to 10 phone book entries on the COMAND controller unit control buttons.
^ Address data from a Secure Digital (SD) card in the COMAND controller unit's card slot or from a USB stick inserted into the USB electrical connector can be stored in the address book.