Phone line computer networking

Details Phone line computer networking Phone line computer networking

1997-01-10

1999-04-20

Chan, Wing F.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

379 9001, 370445, H04M 1100

Patent

active

058964436

ABSTRACT:
The invention provides for simultaneous local area networking and analog telephony using a single telephone line. The local area networking is carried out using two or more high-frequency modems, which when coupled to devices, can transfer data on high-frequency signals. These high-frequency signals may be carried on the telephone line along with the lower frequency signals used for analog telephony provided there is proper isolation. Thus, the invention utilizes selectively high-frequency bandpass and audio frequency bandpass filters coupled to the telephone line.

REFERENCES:
patent: 4596011 (1986-06-01), Kobayashi et al.
patent: 4785448 (1988-11-01), Reichert et al.

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