Twisted Pair Types - Straight-Through Cable

Straight Cable

Twisted-Pair Cabling – Straight-Through Cable
A straight-through cable is used in the following circumstances:
• From a host to a hub – MDI to MDIX
• From a host to a switch - MDI to MDIX
• From a router to a hub - MDI to MDIX
• From a router to a switch - MDI to MDIX

Essentially, a straight-through cable is used to connect any device to a hub or
switch, except for another hub or switch. The hub or switch provides the
crossover (or MDIX) function to connect transmit pins to receive pins.

The pinout on each end of a straight-through cable must be identical. The
TIA/EIA-568B standard for a straight-through cable is as follows:

A straight-through cable is often referred to as a patch cable.