Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1985-12-16
1988-01-05
Dwyer, James L.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 63, H04Q 704
Patent
active
047180803
ABSTRACT:
A microprocessor-controlled interface for a cellular radio telephone system enables the user to communicate with such system by means of conventional telephony devices. A standard telephone outlet communicates with the transceiver logic bus through a microprocessor. Switches are provided for controlling the audio path between the handset and the transceiver of the mobile, vehicular-mounted unit in response to the status of the interface outlet. The microprocessor interprets both the transceiver bus and various signals generated by the operation of a device that is plugged into the interface so that the operation of the device is rendered fully compatible with the cellular system. The microprocessor is programmed to decode known manufacturer protocols whereby the interface is able to render itself compatible with various equipment types.
REFERENCES:
patent: 4558178 (1985-12-01), Yasuda et al.
patent: 4658096 (1987-04-01), West, Jr. et al.
Lineback, "Cellular Link is Step to Portable Office", Electronics, Jun. 28, 1984, pp. 48-50.
"Taking Mobile Out of Cellular" by William L. West, Jr., printed in Telephone Engineer & Management (12/15/84), pg. nos. unknown.
"The Cel Tel 5"/Product Literature of Westcom Products, Inc., earliest known distribution Apr. 19, 1985.
"The Cel Tel 1"/Product Literature of Westcom Products, Inc. earliest known distribution Apr. 19, 1985.
Holman Andrew W.
Serrano Arthur L.
Dwyer James L.
Ham Mark E.
Kramsky Elliott N.
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