Communications data terminal capable of performing a plurality o

Details Communications data terminal capable of performing a plurality o Communications data terminal capable of performing a plurality o

1998-06-01

2000-12-19

Kuntz, Curtis A.

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

358435, H04M 1100, H04N 100

Patent

active

061636010

ABSTRACT:
A communications data terminal apparatus that is capable of performing a plurality of communications controls includes a first communications controller performing communications functions including V.8 and V.34 procedures, a second communications controller performing a modem function having a data signaling rate slower than that of the first communications controller. A timer counts a predetermined time period after the first controller sends a CM signal during a calling mode, or a JM signal during a receiving mode. A system controller is used to 1) determine whether the first communications controller receives the JM signal from a remote data terminal apparatus within the predetermined time; 2) stop sending the CM signal and receive a DIS signal when it is determined that no JM signal is received within the predetermined time when the apparatus is operating in the during the calling mode; 3) determines whether the first communications controller receives a CJ signal within the predetermined time; and 4) stop sending the JM signal and sends the DIS signal when no CJ signal is received within the predetermined time when the apparatus is operating in receiving mode.

REFERENCES:
patent: 5721731 (1998-02-01), Yoshida
patent: 5751441 (1998-05-01), Morimoto
patent: 5812281 (1998-09-01), Mukai et al.
patent: 5943364 (1999-08-01), Yoshida

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