Compound transmission system for compounding LAN and other communication channels
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United States of America Patent
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Apr 20, 1999
Grant Date -
N/A
app pub date -
Mar 21, 1996
filing date -
Mar 27, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compound transmission system compounds signals from a LAN communication device and other communication devices without multiplex them. A first LAN communication device is connected to a second LAN communication device through two line pairs (10, 20). A first signal transmission device such as an exchanger (111) is connected to center taps of windings of transformers (50, 51) on the side of the line pairs to superpose a communication signal from the first signal transmission device on the LAN signal and separate a telephone communication signal from the LAN signal at the center taps. The transformers (50, 51) constitute a first superpose/separate circuit. A second signal transmission device such as an exchanger terminal (112) is connected to center taps of windings of transformers (60, 61) on the side of the line pairs to superpose a communication signal from the second signal transmission device on the LAN signal and separate the communication signal from the LAN signal at the center taps. The transformers (60, 61) constitute a second superpose/separate circuit.
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