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Installation Guide for the Model SW502 and Model SW507 Ethernet Switches
Twisted-pair Cables
For two devices to communicate, the transmitter of each device must be connected to the receiver of
the other device. The cross-over function is usually implemented internally as part of the circuitry in
the device. Some repeaters and switch ports are media-dependent interfaces with cross-over ports,
referred to as MDI-X or Normal ports. Computers and workstation adapter cards are usually media-
dependent interface ports, referred to as MDI or Uplink ports. Refer to the installation instructions in
Chapter 3, "Installation," for appropriate cable use and connection.
Figure C-1. Straight-through twisted-pair cable
Figure C-2. Cross-over twisted-pair cable
C-2
Cabling Specifications
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