GF82.95-P-0001QM TELE AID Operation

GF82.95-P-0001QM TELE AID Operation
- with CODE (359) TELE AID emergency call system

The emergency call system control unit (N123/4) enables vehicle- specific services to be realized. Currently supported vehicle- specific services in the US includes:
^ Telematic Alarm Identification on Demand (emergency call system) (TELE AID) (incl. police emergency call number "911") manual/automatic
^ MB information call
^ Telediagnosis/MB-Info call
^ Dynamic assignment
^ Vehicle unlocking in an emergency
^ Authorization

The emergency call system control unit (N123/4) is not used for regular telephone calls.

All telematics services are integrated in the emergency call system control unit (N123/4) and run fully automatic. The information is shown on the display of the COMAND operating, display and controller unit (A40/3) and in the multifunction display (A1p13) of the instrument cluster (A1). Since position finding is required for the services, the navigation unit that is integrated in the emergency call system control unit (N123/4) is also used.
The navigation unit is a Global Positioning System (GPS) receiver. The vehicle's position and direction of movement are determined automatically and kept available in a history. The navigation unit receives its GPS data from the GPS antenna (A2/23) (model 209.4, model 209.3 up to 31.5.06) or from the GPS antenna (A2/49a2) (model 209.3 as of 1.6.06).

The communication module of the emergency call system control unit (N123/4) is a mobile phone adapted to the American mobile telephone network, which is only used for handling the telematics functions. It sends and receives its data over the telephone antenna (A2/22) (model 209.4, model 209.3 up to 31.5.06) or over the telephone antenna (A2/49a1) (model 209.3 as of 1.6.06). A prerequisite for using the services, however, is a communication module of the emergency call system control unit (N123/4) that is authorized to provide the particular service. This has to be configured ex-factory with the telephone number of the corresponding service provider. In a second step, the user has to become authorized in the service center via this telephone number. Authorization can already be done in part in the factory. The telematics services are activated by pressing the MB-Info and breakdown assistance button group (S93/6) or, in the event of a manual emergency call, by pressing the SOS pushbutton switch (S93/3) in the overhead control panel control unit (N70).

After activation, the emergency call system control unit (N123/4) transmits an SMS to the service center. While the SMS is transmitted, a telephone connection to the service center is established immediately.

Function requirements
Any telematics service has to be authorized individually. In the event of a defect or missing authorization, a fault message is issued over the following components:
^ Radio (A2)
(without code (530) COMAND APS USA (with navigation system))
^ COMAND operating, display and controller unit (A40/3)
(with code (530) COMAND APS USA (with navigation system))
^ Multifunction display (A1p13) of instrument cluster (A1)

Self-test
When circuit 15R is active, the emergency call system control unit (N123/4) performs a self-test (approx. 3.5 s). If the test is successful, the system is operational.

Basic functions
^ Carrying out cyclic self-diagnosis tests
^ Keeps vehicle data available and transmits them securely in case of requirement
^ Transmitting data messages (with the aid of SMS)
^ Placing telephone calls in hands-free mode

Emergency call system
In the event that the driver has an emergency in a remote area, a service technician can obtain an overview of the situation in the vehicle interior with the aid of the emergency call system control unit (N123/4) and initiate the appropriate emergency measures (automatic emergency call). It is also always possible to transmit a manual emergency call by operating the SOS pushbutton switch (S93/3) in the overhead control panel control unit (N70).

The emergency call system is activated using two different methods:
^ Automatically in the event of a crash (through the crash data of the supplemental restraint system (SRS))
^ Manually by actuating the SOS pushbutton switch (S93/3) in the overhead control panel control unit (N70)

In both cases, an emergency message is transmitted immediately to the closest emergency center.

The content of the emergency message includes:
^ vehicle position, direction of travel and history
^ vehicle data and crash detection (severity of the accident)
^ customer data of the emergency service provider

Terminating the emergency call
Usually, the emergency service center deactivates the emergency call.

The emergency call system control unit (N123/4) terminates establishing the connection of the emergency call after 5 unsuccessful attempts.