Antenna, Phone: Description and Operation

GF82.95-P-3001CAU Selecting Telephone Antenna, Function
MODEL 207.3 /4
- with CODE (359) TELE AID emergency call system

Function requirements for selecting telephone antenna
^ Circuit 30g or circuit 15R ON
^ Emergency call system authorized and operating properly
^ Defective multifunction antenna (A28/11) or poor reception

Selecting telephone antenna, general
Normally the mobile phone signals of the following vehicle-related services are transmitted and received by the communication module integrated into the emergency call system control unit (N123/4) via the multifunction antenna:
- Authorization
- - Manual or automatic emergency call, including police emergency call number "911"
- MB information call
- Roadside assistance
- Vehicle tracking
- Vehicle remote unlocking
- Vehicle remote locking
In the event of a defective multifunction antenna, the communication module integrated into the emergency call system control unit automatically transmits and receives via the emergency call system antenna (A2/52).

Telephone antenna selection function sequence
The emergency call system control unit monitors the multifunction antenna via a direct line. The emergency call system control unit detects a malfunction in the multifunction antenna (e.g. defective because of rollover) or poor multifunction antenna reception and then automatically transmits or receives the mobile phone signals or data for each vehicle-related service via a direct line and the emergency call system antenna.