Data communication apparatus and method capable of discriminatin

Details Data communication apparatus and method capable of discriminatin Data communication apparatus and method capable of discriminatin

1992-08-19

1993-11-30

Chan, Wing F.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

358438, H04M 1100, H04N 132

Patent

active

052673014

ABSTRACT:
A data communication apparatus/method discriminates whether a calling station is a data communication terminal or a voice terminal by sampling information on the communication line to obtain frequency data relating to that information, and summons an operator at the destination to let the operator answer when it is discriminated that the calling station is a voice terminal.

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