Telephone Control Unit, Basic Function - GF82.70-P-9891A

Model All (CAR) 

with code 380 (Car telephony package) 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 
  • Variants 

General 

The telephone control unit provides various telephony functions and enables telephony via the telephone antennas of the vehicle. The telephone control unit has the following operating modes:

• Via a SIM card (Subscriber Identification Module) in the SIM card reader
• Via a SIM card in the SIM card reader in combination with registration of a specific mobile phone in the multimedia system control
• Using the SIM Access Profile (SAP) via the SIM card of a connected mobile phone

The telephone control unit is connected to the vehicle's network architecture.

Depending on the model designation, the telephone control unit can be used as a Wi-Fi hotspot. In this case, a selection is made in the multimedia system as to whether the Wi-Fi hotspot of the telephone control unit or the Wi-Fi hotspot of the multimedia system control is to be used.

With integrated SIM card reader, the telephone control unit is located in the glove compartment.

With external SIM card reader, only the SIM card reader is located in the glove compartment. The telephone control unit is then located in the trunk or in the load compartment.

Function requirements 

• Circuit 30t ON
• Access to SIM card

Functions 

The telephone control unit performs the following tasks:

• Connection to the mobile telephone network via the vehicle's external antennas
• Communication with the multimedia system control over WLAN and Bluetooth®
• Bluetooth® communication (SAP) with mobile phone (dependent on operating mode)
• Network communication with the mobile phone cradle, for controlling the compensator (depending on the equipment)
• Wi-Fi hotspot (depending on the model designation)
• Communication with external SIM card reader (model dependent)

For Internet functions, the telephone control unit uses Wi-Fi, while Bluetooth® is used for telephone calls.

Variants 

The telephone control unit is used in the following variants:

• Integrated SIM card reader, integrated Bluetooth®/WLAN antenna, no hotspot function
• Integrated SIM card reader, integrated Bluetooth®/WLAN antenna and hotspot function
• External SIM card reader, external Bluetooth®/WLAN antenna and hotspot function