Antenna, Phone: Description and Operation

GF82.95-P-3001FLU Selecting Telephone Antenna, Function
- with CODE (359) TELE AID emergency call system

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

Telephone antenna selection, general
Normally the mobile phone signals of the following vehicle-related services are transmitted and received by the communication module integrated in 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 (e.g. defective because of rollover) or inadequate reception via the multifunction antenna and then automatically transmits or receives the mobile phone signals of the relevant vehicle-related service via a direct line and the emergency call system antenna.