Analog data station terminal

Details Analog data station terminal Analog data station terminal

1989-12-22

1991-08-13

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 7, 375 20, 370 84, H04B 138

Patent

active

050401904

ABSTRACT:
An analog data station terminal is described for use in a high speed data telecommunication system. The analog data station terminal interfaces a customer modem to the local telephone line for transmission of data at very high data rates, e.g., more than 9600 bits per second, with significant reduction in error rate. The analog data station terminal receives analog signals from the customer modem and converts then to a digital form that is compatible with the telephone system. The analog data station terminal also receives digital data from the telephone system and converts it to analog form for input to the customer modem. The formatting and reformatting of the data signals are performed synchronously with the telephone digital data network.

REFERENCES:
patent: 3909721 (1975-09-01), Bussgang et al.
patent: 4403331 (1983-09-01), Halpern et al.
patent: 4748637 (1988-05-01), Bishop et al.
patent: 4823363 (1989-04-01), Yoshida
patent: 4876695 (1987-10-01), Witters et al.
Bell Communications Research, Technical Advisory TA-TSY-000083, Digital Data System-Requirements for the Office Channel Unit, Issue 1 (Dec. 1984).
The Bell System Technical Journal, Dataport-Channel Units for Digital Data System 56-kb/s Rate, Dunbar et al. (vol. 61, No. 9, Nov. 1982).

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