Information processing and communication apparatus

Details Information processing and communication apparatus Information processing and communication apparatus

1995-12-12

1998-05-26

Kuntz, Curtis

Telephonic communications

Multi-line or key substation system with selective switching...

Switching or supervision feature

379157, 379156, 379 9314, 36470505, H04M 100, G06F 1516

Patent

active

057578982

ABSTRACT:
Devices, such as a mouse and a keyboard, a monitor of a PC, a microphone and a speaker provided on the extension board, and a sound input/output device of the sound input/output unit which is connected to the extension board are utilized as a display unit, an operation unit, and a sound input/output unit of the key telephone, respectively, by interchanging control information between a central processing unit of a PC main device and a control unit of an extension board which includes an exchange circuit, an information processing circuit, an I/F circuit, and a telephone circuit for an extension line. Accordingly, it is possible to provide an information processing and communication apparatus, capable of controlling at least one external line and a plurality of extension lines, with superior operability, which has combined functions of a PC and a key telephone system.

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patent: 5309509 (1994-05-01), Cocklin et al.
patent: 5381468 (1995-01-01), Ozawa
patent: 5420918 (1995-05-01), Tsuchida
patent: 5483584 (1996-01-01), Hayashi et al.
patent: 5581612 (1996-12-01), Nishikawa
patent: 5649005 (1997-07-01), Lynch et al.
patent: 5655014 (1997-08-01), Walsh et al.

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