Portable transceiver and ESN transfer system therefor

Details Portable transceiver and ESN transfer system therefor Portable transceiver and ESN transfer system therefor

1995-02-13

1996-07-09

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455 88, 4551861, 379 62, H04B 140

Patent

active

055354360

ABSTRACT:
A portable transceiver and an ESN transfer system for a car telephone system. The ESN and the MSN, which are manufacturer-controlled numbers, are stored in an EEPROM mounted on the panel of the portable transceiver. When the panel on which the EEPROM is mounted is to be replaced, only the ESN is transferred to the EEPROM of the new panel. Upon completion of the ESN transfer, the ESN in the EEPROM of the replaced panel is rewritten to data, which would make its specific part, such as the manufacturer's ID number, to be judged "incorrect". No ESN whose specific part is "incorrect" can be transferred. The ESN transfer unit, connected to a connector provided in the casing of the portable transceiver, performs said ESN transfer.

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