Disconnecting device for communications connections

Details Disconnecting device for communications connections Disconnecting device for communications connections

2003-03-19

2008-08-26

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

C307S140000, C439S638000

Reexamination Certificate

active

07417338

ABSTRACT:
A switching arrangement is connected between a PC and a communications line. The switching arrangement is controlled by a power supply voltage in the PC that can be accessed externally. When the PC switched off, this supply voltage disappears and the device in the communications line goes into a blocked state. This makes it possible to completely disconnect the PC from the communications line without conducting any operations in the PC, even if the communications card or the modem wants to maintain a constant connection with the outside world.

REFERENCES:
patent: 5491721 (1996-02-01), Cornelius et al.
patent: 6501195 (2002-12-01), Barton
patent: 6961856 (2005-11-01), Kouropoulus
patent: 2000010887 (2000-01-01), None
patent: WO 03/010627 (2003-02-01), None
patent: WO 03/081396 (2003-10-01), None
Mason, Research Disclosure, 428, 1699 (Dec. 1999).

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