Videotex with telephone call screening system

Details Videotex with telephone call screening system Videotex with telephone call screening system

1989-08-07

1990-05-01

George, Keith E.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379215, H04M 1100

Patent

active

049225235

ABSTRACT:
If a call waiting signal is supplied to a telephone line during reception of a videotex information through a videotex center, a control unit responds to the calling signal to actuate call waiting equipment and an associated switching unit for transmitting the calling signal to a videotex line and displaying an alarm signal at the videotex receiver. When the user of the videotex changes over the switches of the switch box and places his telephone receiver off-hook, he can communicate with the incoming calling party.

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patent: 4649533 (1987-03-01), Chorley et al.
patent: 4852151 (1989-07-01), Dittakavi et al.

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