Tele Aid Function

Tele Aid Function

TELE AID, general
The name TELE AID stands for TELEMATIC ALARM IDENTIFICATION ON DEMAND. TELE AID is an automatic emergency call system using the availability of new technologies such as vehicle location finding via satellite and wide distribution of mobile telephone network for reducing accident causes (rescue time reduction). Emergency calls and precise location description are automated by TELE AID and therefore do not depend on incorrect human behavior in stress situations.

Information processing of systems associated to TELE AID is performed via conventional wiring and vehicle's own bus systems (CAN and D2B = digital data bus or fiber optic cables). [Ditubi]) = Digital-Data-Bus or fiber optic cable). TELE AID includes three services:
- TELE AID emergency call
- TELE AID telediagnosis
- TELE AID info call.

Function sequence for a TELE AID emergency call
A TELE AID emergency call can be actuated automatically or manually. The following actuation procedures should be distinguished:
- Automatically,
- by the Steuergerat restraint systems control module (N2/7) or
- by the external tilting cone sensor (B66).

- Manually,
- by operating the TELE AID pushbutton switch (S93/3)

If an alarm is triggered, the telephone transmitter/receiver unit and TELE AID, D2B (A35/17) sets up an emergency call telegram containing information on the accident severity, vehicle identification, vehicle positioning and type of alarm actuation.

The emergency call telegram is transmitted via the vehicle telephone equipment (D-network).

The service provider number to be dialed is stored on the SIM card (TELE AID SIM) integrated in the CTEL and TELE AID transmitter/receiver, D2B (A35/17), and is dialed automatically by the system.

If the CTEL antenna (A2/22) is faulty, a switchover is made automatically to the TELE AID backup antenna (A2/50).

When the power supply is interrupted (e.g. battery failure) the system is able to switch automatically over to a additional battery (G1/1).

NOTE: When vehicle battery is disconnected for repair purposes the system switches automatically over to the additional battery (G1/1) when the telephone system is not set to the service mode.

The emergency call telegram is received and decoded by the service provider.

When this is done, the position data contained in the message are converted by means of a street database into location and street name and forwarded together with further information from the emergency call message, to the rescue center responsible (as a general rule the police).

The decoded emergency call telegram is transmitted to the rescue service by the service provider as follows:
- Either via electronic data transmission or
- via a telephone voice connection.

TELE AID emergency call is supplemented by TELE AID telediagnosis and the MB information service TELE AID telediagnosis allows quick help in the case of a vehicle defect.

Requirements and function sequence for TELE AID telediagnosis are practically identical with the function sequence for a TELE AID emergency call.

If vehicle operational problems occur the driver can reach the responsible Daimler Chrysler service points via MB Info.

With a TELE AID service (emergency call, telediagnosis, MB information) a voice connection (via mobile telephone network) is accomplished from the vehicle to the associated service point. Then the required rescue measures are started there.

When initially started the system performs an authorization. For this purpose it is necessary that a valid SIM card Subscriber Identification Module) (for TELE AID) is installed in the telephone transmitter/receiver unit and TELE AID, D2B (A35/17) and a service contract is made with the corresponding service provider.

NOTE: An SIM card for the GSM 900 MHz and GSM 1800 MHz network can be installed for the TELE AID service (code 855).

Without authorization is not possible to operate a TELE AID service.
When the system is not authorized or a TELE AID emergency call malfunction is present the TELE AID pushbutton switch (S93/3) indicator lamp comes on and an error message appears on the display in the instrument cluster.

Fault message in the case of TELE AID E-Call

Fault Message In The Case Of TELE AID E-call:

When the system is not authorized or a malfunction in the TELE AID service telediagnosis MB information is present an error message appears also in the instrument cluster display.

The following structogram indicates, strongly simplified, the sequence of a TELE AID emergency call.







NOTE: The figure describes an emergency call message (TELE AID E-Call) as it is presently used in Germany

This TELE AID emergency call is triggered for testing purposes.

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