Address code arrangements

Details Address code arrangements Address code arrangements

1985-08-09

1987-09-01

Lev, Robert

Telephonic communications

Audio message storage, retrieval, or synthesis

379 61, 235492, H04Q 704

Patent

active

046913394

ABSTRACT:
In a cordless telephone it is usual for the base station and the handset to be allotted a single address code to provide "dial security". Such an address code is usually programmed in during manufacture. In the present arrangement, a printed circuit board (2) in the handset or base station bears a single common track (5) and a set of tracks (6) adjacent to it. Each cordless set's two units also has a label (1) with a set of conductive strips on it which is secured to the board so as to connect the common track and a selection of the individual tracks. Thus energization of the common track (5) energizes a selection of the tracks (6) according to the address.
When a number is to be sent the address code defined by the handset's label is sent to the base station and compared with that for the base station's label. If they agree, "dialling" is permitted.
The label can also be wrapped round the edge of the board or plugged into a socket on the board.

REFERENCES:
patent: 3022381 (1962-02-01), Pferd
patent: 3647972 (1972-03-01), Glover et al.
patent: 3666925 (1972-05-01), Marcus
patent: 3876865 (1975-04-01), Bliss
patent: 4044229 (1977-08-01), Samreus
patent: 4255653 (1981-03-01), Borkat et al.
patent: 4517412 (1985-05-01), Newkirk et al.
patent: 4539472 (1985-09-01), Poetker et al.
patent: 4560832 (1985-10-01), Bond et al.

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