Terminal equipment of a vehicle radio telephone system

Details Terminal equipment of a vehicle radio telephone system Terminal equipment of a vehicle radio telephone system

1990-06-15

1993-05-18

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 89, 4551811, 4551861, 379200, 379373, 379396, H04B 100, H04B 700

Patent

active

052128105

ABSTRACT:
Terminal equipment having transmitting and receiving functions for a vehicle radio telephone system has a function thereof limited to one of a plurality of modes depending on the time zone. The equipment is automatically locked when a predetermined period of time expires after the end of a communication. The area wherein a call can be originated on the equipment is limited to one of local, domestic and international areas on the basis of the time zone. A memory has a plurality of addresses each being loaded with a particular telephone number to allow the single equipment to selectively use a plurality of telephone channels, on the basis of the time zone. A plurality of memories each stores a particular speed call number table or a particular unattended telephone message table, so that the tables are selectively used depending on the time zone. Further, the volume level of an alert tone to be produced on the reception of a call and the illumination for a keyboard and a display are controlled on the basis of the time zone.

REFERENCES:
patent: 4481382 (1984-11-01), Villa-Real
patent: 4511765 (1985-04-01), Kuo
patent: 4585904 (1986-04-01), Mincone et al.
patent: 4982424 (1991-01-01), Saito et al.
Brassart, An "Anti-Intercity" Telephone Device, Toute L'Electronique (France), No. 443 (May 1979).

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