Portable radiotelephone for automatically dialing a central voic

Details Portable radiotelephone for automatically dialing a central voic Portable radiotelephone for automatically dialing a central voic

1997-01-31

2000-10-03

Tsang, Fan

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455 90, 455575, H04B 138

Patent

active

061285145

ABSTRACT:
A portable radiotelephone can be shifted between a first condition wherein the radiotelephone does not receive or transmit voice communications by radiotelephone transmissions over radiotelephone channels and a second condition wherein the radiotelephone receives and transmits voice communications by radiotelephone transmissions over radiotelephone channels. The radiotelephone automatically calls a central voice-activated phone dialing system remote from the portable radiotelephone in response to producing the second condition in the radiotelephone. The radiotelephone includes a switch for producing the first and second conditions.

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