Method and arrangement for the connection of multiple terminals

Details Method and arrangement for the connection of multiple terminals Method and arrangement for the connection of multiple terminals

1997-03-13

1999-11-23

Hong, Harry S.

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Priority override

379 9335, 379168, 379184, 379377, 379378, H04M 342, H04M 1100, H04M 902, H04M 100

Patent

active

059913860

ABSTRACT:
In an arrangement for the connection of two or more terminals (1, 1') to one subscriber line (3) the terminals (1, 1') are connected to a chain so that the connection from the subscriber line (3) to a terminal (1) is further branched (13) to the next terminal (1'), and the arrangement according to the invention is characterized in that it comprises means (18, 20) to detect whether the terminal (1) and the next terminal (1') are in the operating state or in the idle state; a controllable switch (12, 14) for each terminal (1, 1') connected to the subscriber line (3) in order to connect the corresponding terminal (1, 1') to the subscriber line (3) and disconnect it from the line; and means (18, 20) to independently control the switch (12, 14) corresponding to each terminal (1, 1') depending on which states are detected for the terminals (1, 1'). Thus it is possible, when required, to cut off the current from the subscriber line (3) in order to disconnect the connection. In order to detect the operating state of the next terminal (1') it is preferable to provide the connection (13) to it with a current meter or detector (20). With the invention one is always able to use a second terminal (1') when desired, e.g. a telephone, which is connected behind a first terminal (1), e.g. a modem. The second terminal (1') will not require any special design and it must not necessarily be able to be connected in a chain.

REFERENCES:
patent: 4852151 (1989-07-01), Dittakavi et al.
patent: 4995074 (1991-02-01), Goldman et al.
patent: 5140631 (1992-08-01), Stahl
patent: 5519767 (1996-05-01), O'Horo et al.

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