Modem coupler for multi-line key telephone system

Details Modem coupler for multi-line key telephone system Modem coupler for multi-line key telephone system

1989-07-20

1991-05-07

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

379165, H04M 1100

Patent

active

050142992

ABSTRACT:
A modem coupler making it possible for a modem to access an analog signal telephone communication system directly from a multi-line key telephone set, the modem interfacing the system with a digital computer terminal or any other terminal that processes digital data. The modem coupler is self-sufficient whereby its interposition between the modem, the telephone set and the communication system entails no additional wiring or modifications of the telephone set, the modem, or the system.

REFERENCES:
patent: 4367374 (1983-01-01), Serrano
patent: 4491694 (1985-01-01), Harmeyer
patent: 4514597 (1985-04-01), Kikuchi et al.
patent: 4809317 (1989-02-01), Howe et al.
patent: 4868865 (1989-09-01), Ogawa et al.
A-JEM, Sidwell Development Ltd., Jan. 26, 1988.
Phone Flex, TVMP Inc., PCWEEK, Jun. 1988.

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