Low cost ISDN switch

Details Low cost ISDN switch Low cost ISDN switch

1990-06-29

1993-05-11

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 67, 370 941, H04L 1256, H04Q 1104

Patent

active

052107418

ABSTRACT:
A switch for selecting, from among a plurality of devices, a device to be coupled to a data line, such as an ISDN line. The switch includes a data line receiver coupled to a data line interrogator and switch controller. The switch further includes a device identifier coupled to both the data line receiver and the data line interrogator and switch controller, and a plurality of buffers which can be enabled by the device identifier, thus coupling a device, connected to one of such buffers, with the data line, also connected to such buffers. Information received by the data line receiver is passed to the data line interrogator and switch controller for evaluation to determine whether such information is device identification information. If such information is device identification information, the device interrogator and switch controller signals the device identifier to examine the data and enable the appropriate buffer associated with the device identified by such information so that the identified device can be operatively coupled to the data line. The switch also provides the required control logic to enable a device to be coupled to the data line for transmission of information thereon.

REFERENCES:
patent: 4726017 (1988-02-01), Krum et al.

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