NetComm NP2500 manual RJ-45 Network Ports, Straight and crossover cable configuration

APPENDIX B Cable Information

This cable information is provided for your reference only. Please ensure you only connect the appropriate cable into the correct socket on either this product or your computer.

If you are unsure about which cable to use or which socket to connect it to, please refer to the hardware installation section in this manual. If you are still not sure about cable connections, please contact a profes- sional computer technician or NetComm for further advice.

RJ-45 Network Ports

RJ-45 Network Ports can connect any networking devices that use a standard LAN interface, such as a Hub/ Switch Hub or Router. Use unshielded twisted-pair (UTP) or shield twisted-pair (STP) cable to connect the networking device to the RJ-45 Ethernet port. Depending on the type of connection, 10Mbps or 100Mbps, use the following Ethernet cable, as prescribed.

10Mbps:	Use EIA/TIA-568-100-Category 3, 4 or 5 cable.
100Mbps:	Use EIA/TIA-568-100-Category 5 cable.
Note:	To prevent loss of signal, make sure that the length of any twisted-pair connection does
	not exceed 100 metres.
	RJ-45 Connector
	Pin Assignment	Normal Assignment
	1	Input Receive Data +
	2	Input Receive Data -
	3	Output Transmit Data +
	6	Output Transmit Data -
	4,5,7,8	Not used

Figure 1

RJ-45 plug attached to cable

Figure 2

Straight and crossover cable configuration

There are two types of the wiring: Straight-Through Cables and Crossover Cables. Category 5 UTP/STP cable has eight wires inside the sheath. The wires form four pairs. Straight-Through Cables has same pinouts at both ends while Crossover Cables has a different pin arrangement at each end.

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