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DES-1210G Fast Ethernet/Gigabit Ethernet Switch User's Guide
Contact
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With a crossover cable, two pairs of wires are switched at one connector end. Carry out the
following steps to create a customized, crossover twisted-pair cable:
1. Leave one end of the cable as is, with the RJ-45 connector intact. The wiring at just one
end of the cable needs to be modified.
2. At the other end of the cable, connect wires 1 and 2 to contacts 3 and 6, respectively.
Likewise, connect wires 3 and 6 to contacts 1 and 2. Refer to the following diagram:
Crossover cable for use with MDI-X to MDI-X and/or MDI-II to MDI-II connections
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RJ-45 Pin Assignments
MDI-X Port
RD+ (receive)
RD- (receive)
TD+ (transmit)
Not used
Not used
TD- (transmit)
Not used
Not used
The standard RJ-45 pin assignments
Straight cable for use with MDI-II to MDI-X connections
MDI-II Port
TD+ (transmit)
TD- (transmit)
RD+ (receive)
Not used
Not used
RD- (receive)
Not used
Not used
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