Radio telephone system for selectively allowing a party in commu

Details Radio telephone system for selectively allowing a party in commu Radio telephone system for selectively allowing a party in commu

1990-07-10

1992-03-24

Dwyer, James L.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 61, 379393, 455 77, H04M 1100, H04B 140

Patent

active

050995081

ABSTRACT:
A radio telephone system such as a car telephone having a function of selectively allowing a party communicating with a user of the telephone system to transmit a voice signal to the user during a hold state set by the user. When a predetermined time elapses after a hold state is set by the user of the telephone system, the system allows the party to transmit a voice signal to the user even during the hold state.

REFERENCES:
patent: 4451706 (1984-05-01), Boeckmann
patent: 4492822 (1985-01-01), Alderman
patent: 4876708 (1989-10-01), Saequsa et al.
patent: 4896370 (1990-01-01), Kasparian et al.
patent: 4899381 (1990-02-01), Lee
patent: 4972454 (1990-11-01), Toki et al.
Motorola "DYNA T.A.C. Cellular Mobile Telephone Installations", Jun. 3, 1983.
Motorola "DYNA T.A.C. 6000X Universal Mobile Telephone" 1984.
Panasonic "Operation Insruction of Cordless phone Model #KX-T3000" Sep., 1988.
Copyright 1989 p. 710 JC Penney Catalog.

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