GF82.85-P-2007T Telephone Mode, Function

GF82.85-P-2007T Telephone Mode, Function
- with CODE (525) MB Audio 50 APS radio

Component Identification:

The telephone system can be operated as follows:
^ directly at the radio control panel and navigation unit (A2/56)
^ with the telephone handset (A34)
^ via the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111) in combination with the instrument cluster (A1) multifunction display (A1p13)
^ using the voice control system (VCS) in vehicles with code (813) voice control system (VCS)

Function
The telecommunications control unit (N112) transmits and receives the telephone radio signals via the telephone antenna (A2/49a1) with model 211.0 or the telephone antenna (A2/22) with mode 211.2 upon request from the telephone handset (A34), for example. In portable CTEL mode the signals are transmitted via the E-net compensator (A28/3) to the telephone interface (A34/4). The E-net compensator (A28/3) has the task of compensating for losses caused by the higher transmission frequency of the E-net by means of amplification.

As soon as the telephone is ready for operation the reception field strength is displayed in 5 stages on the radio control panel and navigation unit (A2/56) display.
All control signals and useful signals (e.g. sound signals with hands-free system activated) are transmitted via the media-oriented system transport (MOST).

The CTEL (A34/6) needs an interface to communicate with the MOST subscribers. This function is taken care of by the telephone interface (A34/4).

The battery of the portable CTEL (A34/6) is charged via the telephone interface (A34/4). The battery is charged automatically as soon as the telephone interface (A34/4) is active. This is irrespective of whether the portable CTEL (A34/6) is switched on or off.

The radio control panel and navigation unit (A2/56) has the following telephone functions:
^ Automatic disabling of telephone card when the Personal Identifier Number (PIN) is entered incorrectly three times.
^ Direct dialing of the telephone number with the number pad, display of name of party being called (when number entered is known).
^ Speed dial: The first 10 memory locations can be dialed by pressing one key only or by selecting any of the other memory locations by entering the respective 3-digit memory location number.
^ Selection from memory lists sorted according to:
^ Memory location numbers
^ Names (alphabetic)
^ List of last ten numbers called
^ Display of caller's number (if number transmitted)
^ Display of name (if number is known)
^ SMS reading
^ Telephone book processing
^ Notebook error, note number

Voice control system (VCS) in vehicles with code (813) voice control system (VCS)
The voice control system control unit (A35/11) is connected to the radio control panel and navigation unit (A2/56) via the Media Oriented System Transport (MOST). In vehicles with code (813) voice control system (VCS) it is used to operate the telephone and for certain audio operations (e.g. radio station search function). The audio source is muted automatically in the event of a call. It is possible to listen to the telephone call via the vehicle speakers.

Hands-free mode
During a phone call it must be possible for the user to hold the conversation via the hands-free system. For this purpose, the hands-free system microphone group (A67b1) is located in the inside rearview mirror unit (A67). From there the microphone signals are sent straight to the telecommunications control unit (N112), digitized and transmitted via the MOST to the audio gateway control unit (N93/1). Once there the signals are processed again and sent to the vehicle's speakers.

Hand-free conversations are controlled by pushing the "Micro ON" and "Micro OFF" buttons on the radio control panel and navigation unit (A2/56).

Telephone variants
The following special equipment is available for telephone operation:
^ With code (380) preinstallation for MB CTEL, complete
^ With code (381) "Standard" MB telephone in console on right side of tower
^ With CODE (382) MB telephone "Handy" in console on right side of tower
^ With code (383) "Standard" MB telephone in console on right side of dome with integrated TELE AID emergency call system, hands-free system and antenna

The telephone interface (A34/4) and the portable CTEL (A34/6) are made by the same manufacturer. It makes the physical connection between the cellular phone and the MOST and converts the protocol as described in the MOST specification. The telephone interface (A34/4) has its own housing.

Telediagnosis function
The "Telediagnosis" function allows a roadside assistance call to be made to DaimlerChrysler customer service (Customer Assistance Center (CAC)).

Telediagnosis, roadside assistance and information calls can only be made with the extended version of the telecommunications control unit (N112) "High".

The position of the vehicle and vehicle identification information (model, year of construction, engine) and information about the current vehicle status (mileage, battery voltage, displayed fault and warning messages, etc.) are transmitted to the central office.

Shortly after triggering (e.g. in case of breakdown) a voice connection is automatically made to DaimlerChrysler customer service (Customer Assistance Center (CAC)). If necessary, DaimlerChrysler customer service (Customer Assistance Center (CAC)) will notify the nearest workshop in order to provide roadside assistance. The telediagnosis service can only be used if it has been enabled by DaimlerChrysler customer service (Customer Assistance Center (CAC)) beforehand. The central gateway control unit (N93) is the interface between the interior CAN (CAN-B) and the engine compartment CAN (CAN-C). It transmits diagnosis data from the audio gateway control unit (N93/1) to the data link connector (X11/4). The central gateway control unit (N93) is required for telediagnosis. It collects and processes the status messages and fault messages.

Making roadside assistance call
The telediagnosis button (S93/6s2) with the wrench symbol is located in the center armrest, left of the telephone handset (A34).

If the telediagnosis button (S93/6s2) is pressed for longer than t = 2 s, the message "Establishing telediagnosis call" appears in the instrument cluster (A1). If the voice connection to CAC is set up, the message "telediagnosis connection active" appears. When the roadside assistance call is complete, the message is no longer displayed on the instrument cluster (A1).

MB information call function
When an MB information call is made, an automatic connection is established to DaimlerChrysler customer service (Customer Assistance Center (CAC)). This pure voice connection can be used to request all the available information related to the vehicle at no charge.
The following services are available:
^ Answering of questions for operating the current vehicle
^ Information on DaimlerChrysler vehicles
^ Offers on leasing or financing
^ Information brochures on accessories for DaimlerChrysler vehicles
^ Inquiries about the Mercedes-Card services
^ Complaints
^ Queries on technical, service and product topics

Transferring MB-Info call
The MB information call is triggered by pressing the MB-Info button (S93/6s1) to the right of the telephone handset (A34). After confirming with the "OK button" a voice connection is automatically established to DaimlerChrysler customer service (Customer Assistance Center (CAC)). The operator at DaimlerChrysler customer service (Customer Assistance Center (CAC)) then accepts the questions.

In vehicles with code (383) MB phone "Standard" in console on right side of tower with integral TELE AID emergency call system, hands-free system and antenna
The TELE AID emergency call system is based on an emergency call transmit and receive system via the D mobile radio network and position determining via the global positioning system. An emergency call can be actuated manually or automatically.

Manual triggering takes place via the operation of the SOS/ATA [EDW] switch group (S93/3). The emergency call is transmitted via the telephone antenna (A2/49a1) with model 211.0 or via the telephone antenna (A2/22) with model 211.2 and relayed to th emergency call center, decoded and transmitted to the responsible command center.

Functional reliability
2 telephone antennas, the left backup antenna, emergency call system (A2/54) and the right backup antenna, emergency call system (A2/55), are available for providing a reliable D-net connection.
In vehicles with code (383) MB phone "Standard" in console on right side of tower with integrated TELE AID emergency call system, hands-free system and antenna the TELE AID emergency call system has to have diagnosis capability. The telecommunications control unit (N112) is connected to the audio gateway control unit (N93/1) via the MOST and to the interior CAN (CAN-B) via the central gateway control unit (N93), and therefore has diagnosis capability.

SMS text messages
Prerequisites for this are:
^ Telephone interface (A34/4) with CTEL (A34/6) in vehicles with code (380) preinstallation for MB phone "CTEL ", complete and code (382) MB phone "CTEL " in console on right side of tower
^ Telephone handset (A34) and telecommunications control unit (N112) in vehicles with code (381) MB phone "Standard" in console on right side of tower
^ Telephone handset (A34), telecommunications control unit (N112) and TELE AID emergency call system in vehicles with code (383) MB phone "Standard" in console on right side of tower with integrated TELE AID emergency call system, hands-free system and antenna

SMS creating/SMS editing
In the basic service menu the "Mail" button leads to the creation, dispatch and administration of text messages (short message service - SMS).
There are the following options:
^ call up mail inbox
^ call up mail outbox
^ call up mail drafts
^ create new messages
^ perform mail configurations

The characters are entered with the predictive speller or via the 12-key keypad (same as for portable CTEL (A34/6).
Transmitting the SMS is also connected to these functions. A receiver can be entered or selected in the telephone book.

Data safety, SMS buffer
When the power supply fails, the characters stored in the buffer are saved. Although it may be that up to 4 characters go missing. When switched off in a controlled manner, no characters are lost.

Telematics/MB Portal
The MB Portal represents yet another mobility and information service. The communication options (services) are combined here:
^ Call Center (telephone)
^ WAP (with limited internet status)
^ PDA (personal digital assistant)
^ Internet (PC, laptop)

The following topics can be selected directly:
^ Home
^ Traffic
^ Trip
^ My Office
^ Finances
^ NEWS
^ Weather
^ Recreation tips
^ Shopping
^ Mercedes-Benz

WAP function
The telephone operation and SMS operation have been supplemented by a WAP function with reduced internet status. Here it is only possible to access the required information directly within the service menu that is provided, and send and receive e- mails.

Internet function
It is possible to send and receive e-mails and access any number of Internet pages (surfing) by accessing the Internet via the MB portal and using an extended online function. Text can be shown on the display and edited on the control panel. The Internet messages transmitted by the telephone transmit and receive stations are made available by a WAP/internet browser in the telecommunications control unit (N112) and transmitted to the central computer in the radio control panel and navigation unit (A2/56) via MOST and vice versa.
The continuous communication of these two computers must be guaranteed to the "Telematics" function.

Radio module
A GSM-900 module or a GSM-1800 module ensures that all global GSM networks can be accessed. The GSM unit is integrated in the telecommunications control unit (N112) and can be replaced by another GSM module.