Cordless telephone/entry intercom system

Details Cordless telephone/entry intercom system Cordless telephone/entry intercom system

1993-11-01

1995-04-11

Kuntz, Curtis

Telephonic communications

Audio message storage, retrieval, or synthesis

379 38, 455 77, H04M 1100, H04B 140

Patent

active

054066174

ABSTRACT:
An intercom capability is added to a basic radio telephone system by configuring the base station to function as a radio repeater for inter-active communication between a telephone/intercom handset and an intercom unit. A distinctive intercom ring signal permits a user to switch the handset to the intercom mode. Activation of the intercom receiver and transmitter on a timed basis limits battery drain. A purchaser, after setting up the base unit, need only position the intercom unit adjacent to a residence entry. Since no intercom wiring is required, the telephone/intercom is immediately ready for use with minimal installation. The base unit is also configured to prevent intercom access to or from the public telephone network.

REFERENCES:
patent: 4706274 (1987-11-01), Baker et al.
patent: 4896370 (1990-01-01), Kasparian
patent: 5237602 (1993-08-01), Lazik

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