Sheltered housing scheme communications system

Details Sheltered housing scheme communications system Sheltered housing scheme communications system

1988-06-15

1989-11-14

Ng, Jin F.

Telephonic communications

Emergency or alarm communications

Personal monitoring

379 40, 379 45, 379 49, 340533, H04M 1104, H04M 164

Patent

active

048812528

ABSTRACT:
A sheltered housing scheme communications system is provided. The system includes a master unit carried by a warden which is able to receive and initiate outside telephone calls. This is accomplished by inserting the master unit into a system cable which controls an auto dialer. The auto dialer is capable of dialing a non-preprogrammed telephone number by operation of the master unit. The master unit also functions to indicate its availability to answer an incoming call to the central control unit.

REFERENCES:
patent: 3909551 (1975-09-01), Marshall
patent: 3990075 (1976-11-01), Schmitz et al.
patent: 4097690 (1978-06-01), Kuntz et al.
patent: 4554411 (1985-11-01), Armstrong
patent: 4689811 (1987-08-01), Lennstrom et al.

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