Data communication apparatus having ITU-T recommendation V.34 co

Details Data communication apparatus having ITU-T recommendation V.34 co Data communication apparatus having ITU-T recommendation V.34 co

1997-10-27

2000-07-18

Pham, Chi H.

Pulse or digital communications

Equalizers

Automatic

375222, H03H 730, H03H 740, H03K 5159

Patent

active

060917660

ABSTRACT:
This invention improves the success rate of rereception of a primary channel equalizer training signal, which is performed when, in a data communication apparatus having an ITU-T recommendation V.34 communication function, a control circuit performs control to receive a line probing signal, and thereafter, shift to reception of a primary channel equalizer training signal, and to control circuit performs control to, when the primary channel equalizer training signal is not detected within a predetermined time, send a tone A signal and receive a tone B signal, and thereafter, shift to transmission of a limited INFOh signal.

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patent: 5898764 (1999-04-01), Yoshida

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