US car phone E60, E61, E63, E64, E70, E90, E91, E92, E93: Introduction: Notes
Precondition for US car phone is option 639 "Complete basic fittings for mobile phone (USA/CDN)".
- > E60, E61, E63, E64
All vehicles are equipped ex works with option 639.
- > E70, E90, E91, E92, E93
The vehicle can be ordered with either option 639 or option 640 "Basic fittings for US car phone". Vehicles with option 640 can be upgraded to option 639 in the dealer organisation.
Option 639 includes a Telematic Control Unit (TCU). The TCU is the telephone's control unit.
The TCU covers the following minimum functions:
- Manual emergency call
- Automatic emergency call in the event of a crash
- Breakdown call
From this point in time on, the two control units can be fitted at the same time.
The interface box High (ULF-SBX-H) then serves solely option 6FL "USB audio interface". The telephone function is not available in the ULF-SBX-H. The TCU provides the telephone function.
The TCU includes a separate transmitter and receiver module (NAD, Network Access Device).
To ensure the best possible availability, the NAD works using 2 standards:
- Analogue: AMPS (American Mobile Phone Standard), with frequency 800 MHz
- Digital: CDMA (Code Division Multiplex Algorithm), with frequencies 800/1900 MHz
A separate GPS module for determining location is included in the TCU if there is no option "Navigation system" fitted to the vehicle.