US Car phone E60, E61, E63, E64, E90: Introduction: Notes

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Precondition for US car telephone is option 639 "Complete basic fittings for mobile phone (USA/CDN)".

E60, E61, E63, E64: Option 639 is fitted at the factory.

E90: Option 639 must be ordered with the vehicle. Alternatively, option 640 "Basic fittings for US car phone" is available from the factory. This can be upgraded to option 639 by the dealer organization.

Option 639 includes a Telematic Control Unit (TCU). The TCU is the control unit for the telephone and covers the following minimum functions:

Emergency call (E call)
Breakdown call (B call)

The TCU includes its own transmitter and receiver module (NAD - Network Access Device) with its own SIM card. The SIM card is a chip card that is plugged into the mobile phone and which serves to identify the user in the telephone network.

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.