Party selecting circuit arrangement

Details Party selecting circuit arrangement Party selecting circuit arrangement

1987-09-14

1989-03-28

Dwyer, James L.

Telephonic communications

Call or terminal access alarm or control

At substation

379355, 379142, H04M 127

Patent

active

048171336

ABSTRACT:
According to the party selecting circuit arrangement of a telephone of the present invention, an owner of the telephone can avoid a mischievous call or an erroneous call since it is so arranged that a call sound is discharged through the speaker only when the number given by the party other than the owner of the telephone is coincident with the telephone number stored as a secret number in the memory circuit of the telephone. Moreover, the party selecting circuit arrangement according to the present invention enables the owner of the telephone to identify the other party before he or she answers the call since an indicating element which indicates the number of the auto-dialing operation button provided correspondingly to the memory circuit storing the secret telephone number is turned on only at the above-described time.

REFERENCES:
patent: 4266098 (1981-05-01), Novak
patent: 4296282 (1981-10-01), O'Neil et al.
patent: 4639552 (1987-01-01), Hall
patent: 4658419 (1987-04-01), Denen

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