Overview
This document contains information on the location, functions and variants of the telephone control unit.
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 WiFi hotspot. In this case, a selection is made in the multimedia system as to whether the WiFi hotspot of the telephone control unit or the WiFi hotspot of the multimedia system control is to be used.
Location
With integrated SIM card reader, the telephone control unit is located in the glove 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
WiFi and Bluetooth® communication with the multimedia system control
Bluetooth® communication (SAP) with the mobile phone (depending on the operating mode)
Network communication with the mobile phone cradle, for controlling the compensator (depending on the equipment)
WiFi hotspot (depending on the model designation)
For Internet functions, the telephone control unit uses WiFi, more precisely Bluetooth® for telephony.
Variants
The telephone control unit is used in the following variants:
Integrated SIM card reader, integrated WiFi/Bluetooth® antenna, no hotspot function
Integrated SIM card reader, integrated WiFi/Bluetooth® antenna and hotspot function