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LG PC Central Controller Installation Manual page 10

Pc central controller
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Network Interface Connection
Wiring Diagram
* How to differentiate between Direct Cable & Cross Cable
The UTP cable consists of 8 stripes of wire and the wire actually used for data transmission in the
LAN environment is the reception (Rx) No.1 and 2 wire and the transmission (Tx) No.3 and 6,
consisting of 4 strands. They are classified into two types depending on method to connect wire for
reception and transmission.
Direct Cable - Also called as 1:1 straight cable and used for connecting
Cross Cable – Used for 1:1 connection between same equipment in the network.
10 PC Central Controller
Cross Cable
Direct Cable
other equipment from the network.
Direct Cable Connection Method
Cross Cable Connection Method
Direct Cable

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