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OwnerAndrew R. Reichert, William J. Schirmer +4inventors
InventorsAndrew R. Reichert, William J. Schirmer, Nicholas M. Esser, Bradley R. Nelson, Lauren T. May, Stewart C. Brown
Estimating the term…
A network for enabling a local area telephone system to simultaneously carry digital data and analog voice signals on the same tansmission medium. Such a system typically includes a PBX and twisted wire pairs connected to distributed telephone handsets. The network incorporates distributed station units for coupling both voice band signals from telephone handsets and RF signals from data devices to the wire pairs. The station units are physically interconnected in a star configuration with respect to a hub module preferably located in a telephone closet. The hub module includes a plurality of hub units, each uniquely connected by a wire pair to one of the station units. Each station unit and each hub unit incorporates passive filter means to separate voice band and RF band signals. A token passing procedure is used to assign network control to the multiple station units in logical sequence.
In combination with a local telephone network including a plurality of telephone handsets each located at a different station, and each adapted to be connected by a wire pair to a telephone exchange for communicating voice band signals therebetween, apparatus for enabling a plurality of digital data devices distributed amongst said stations to communicate data signals between one another over said wire pairs without interfering with said voice band signals, said apparatus comprising:
In a system including a plurality of stations where each station includes a voice telephone device and/or a digital data device, a network for interconnecting said devices for enabling voice communication between said telephone devices and digital communication between said data devices, said network including:
In a system including a plurality of stations where each station includes a voice telephone device and/or a digital data device, a network for interconnecting said devices for enabling voice communication between said telephone devices and digital communication between said data device, said network including:
In combination with a local telephone network including a plurality of telephone handsets each located at a different station, and each adapted to be connected by a wire pair to a telephone exchange for communicating voice band signals therebetween, apparatus for enabling a plurality of data devices distributed amongst said stations to communicate digital data between one another over said wire pairs without interfering with said voice band signals, said apparatus comprising:
Dependencies are inferred from the claim text.