How to send full-duplex data over a single twisted-pair CAT-5 cable | EDN

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Higher data throughput, shorter response time, and lower installation costs are the key drivers behind the ongoing improvement efforts in industrial network design. That is why allowing the immediate and continuous exchange of binary data has made the full-duplex bus the preferred interface choice in point-to-point connections. 
The world of RS-485 users is seeing a new type of interface emerging that allows for full-duplex data transmission over a single twisted-pair cable.