Emergency call (E-call), function - GF82.95-P-0003R: Notes

MODEL 230 with CODE (349) E-Call emergency call system with CODE (498) Japan version 

MODEL 230 up to 30.6.04 with CODE (349) E-Call emergency call system with CODE (494) USA version 

Emergency Call, general 

Emergency-Call (E-Call) is an automatic emergency call system which uses the availability of new technologies, such as vehicle locating via satellite and telephone to minimize the consequences of accidents.

Emergency calls and precise location description are made possible by E-call and therefore not dependent on incorrect human behavior in stress situations.

Function sequence 

An E-CALL emergency call can be triggered automatically or manually. The following actuation procedures should be distinguished:

• Automatically  ,
  • by the control unit for the restraint system (N2/7) 

    or

  • by the rollover sensor integrated in the emergency call system control unit (EMERGENCY CALL, A35/8)  .
• Manual  ,

  by pressing the emergency call system pushbutton switch (EMERGENCY CALL, S93/3). 

Once an alarm has been triggered, the emergency call system control unit (EMERGENCY CALL, A35/8)  compiles an emergency call telegram, which contains information on the severity of the accident, identification of the vehicle, vehicle positioning and the type of alarm issued. The emergency call telegram is transmitted via the vehicle phone equipment.

In the event of a defective telephone antenna  a switch is made automatically to the EMERGENCY CALL backup antenna (A2/50)  .

From the Japanese government:

1. Official confirmation of the position details is determined

   by

   the police and the person involved in the accident.

2. For this reason the position details is only supplemental information.

On the E-call system for Japan, the telephone number of the PESC (Public emergency service center) is automatically dialed in the event of an emergency call, to transmit the emergency call telegram. The vehicle identification number which is also transmitted is used to call up the required customer information in the database. In combination with the position details a telephone call can now be set up with the person involved in the accident.

Once a conversation with those affected by the accident has been successfully set up, an emergency call (phone voice connection) is made to the responsible rescue service (police, fire department etc.).

Then a voice connection (via phone) is made from the vehicle to the rescue service. Then the required rescue measures are started.

When it is initially started up, an authorization of the system is carried out. Without authorization an EMERGENCY CALL cannot be sent. 

If authorization is not available, the EMERGENCY CALL system  will not function.

The following structogram illustrates, greatly simplified, the sequence during an automatic triggered EMERGENCY CALL.

With circuit 15R off, an EMERGENCY CALL can be manually triggered.

	Emergency-Call (E-call), location of components		GF82.95-P-0003-01R
	Emergency call (E-CALL), block diagram		GF82.95-P-0003-02R
	Switching E-CALL on/off, function		GF82.95-P-2007R
	Authorization, function		GF82.95-P-2001R
	Status indicator, location/function		GF82.95-P-2002RE
	Emergency call actuation, function		GF82.95-P-2003RE
	Emergency call telegram generation, function		GF82.95-P-2004RE
	Emergency call telegram transmission, function		GF82.95-P-2005RE
	Voice connection to vehicle, function		GF82.95-P-2006RE
	Position finding, function		GF82.95-P-3000RE
	Selecting telephone antenna, function		GF82.95-P-3001RE
	E-call control unit, location/task/design		GF82.95-P-4200R
	E-CALL pushbutton switch, location/task/design/function		GF82.95-P-4201R
	Telephone antenna, location/task		GF82.62-P-4105R
	E-call backup antenna, location/task/design/function		GF82.95-P-4202R