Digital modem for multiple telephone circuits

Details Digital modem for multiple telephone circuits Digital modem for multiple telephone circuits

1984-02-16

1987-01-13

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 12, 375 13, 370 58, H04B 306

Patent

active

046370358

ABSTRACT:
A modem for exchanging information between a plurality of remote DTE's and a plurality of local master DTE's is disclosed having multiple line interface and DTE interface circuits. Preferably a single microprocessor is used to process all the signals between the respective lines and DTE interface circuits. Furthermore the microprocessor is also used to calculate and update the operational parameters of the line interface circuits such as equalizer coefficients, A/D or D/A attenuator coefficients.

REFERENCES:
patent: 3566271 (1971-02-01), Whang et al.
patent: 4263670 (1981-04-01), Sherman
patent: 4285061 (1981-08-01), Ho
patent: 4345250 (1982-08-01), Jacobsthal
patent: 4354263 (1982-10-01), Bordry et al.

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