Hybrid communication devices with one telephone line

Details Hybrid communication devices with one telephone line Hybrid communication devices with one telephone line

1993-07-19

1996-01-16

Chan, Wing F.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

379102, H04M 1100

Patent

active

054855080

ABSTRACT:
A interface that connects a single public telephone line to voice telephone devices as well as digital telephone devices. When receiving a telephone call, the interface distributes the incoming telephone call to the telephone devices according to the device signal sent by the caller. When initiating a telephone call, the interface sends a device signal corresponding to the physical position where the initiating telephone device connected to the interface.

REFERENCES:
patent: 4821312 (1989-04-01), Horton et al.
patent: 4953199 (1990-08-01), Hoshi et al.
patent: 5036534 (1991-07-01), Gural
patent: 5048076 (1991-09-01), Mauer et al.
patent: 5056132 (1991-10-01), Coleman et al.
patent: 5070523 (1991-12-01), Hafer et al.
patent: 5073922 (1991-12-01), Okada
patent: 5091932 (1992-02-01), Tsuda

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