Private telephone system using a personal code number to access

Details Private telephone system using a personal code number to access Private telephone system using a personal code number to access

1987-10-09

1989-07-25

Schreyer, Stafford D.

Telephonic communications

Private or single line system

Having plural stations with selective calling

379173, 379216, H04M 172

Patent

active

048521566

ABSTRACT:
A telephone system, wherein an IC card device storing a personal ID number is inserted into the telephone nearest the owner of the IC card device, thus registering the personal ID number in association with the nearest telephone. Once the personal ID number has been registered in this manner, this telephone is automatically connected to any calling telephone on which the personal ID number is dialed.

REFERENCES:
patent: 3920926 (1975-11-01), Lenaerts et al.
patent: 3932709 (1976-01-01), Hoff et al.
patent: 4313035 (1982-01-01), Jordan et al.
patent: 4680785 (1987-07-01), Akiyama et al.
Telcom Report (Siemens) vol. 9, No. 4, Jul./Aug. 1986; pp. 270-273.
HICOM-Chipkarte, p. 270, left-hand col., line 1-right-hand col., line 10; p. 272, right-hand col., line 1--p. 273 left-hand col., line 21.
Patent Abstracts of Japan, vol. 10, No. 275.

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