Crossed cables are used to connect PCs to one other PC or to connect a HUB to a HUB. Crossed cables are sometimes called Crossover, Patch or Jumper cables. If your connection is PC to HUB you MUST use a Straight cable.
The following description shows the wiring at both ends (male RJ45 connectors) of the crossed cable.
|One end |
|Other end |
|4 *||5 *|
|5 *||4 *|
|7 *||8 *|
|8 *||7 *|
- Items marked * are not necessary for 10M LANs but since you will be moving shortly to 100MB LANs (won't you) you will save yourself a LOT OF TIME finding crappy cable (that you made) that does not work. Instead we suggest you wire to 100BaseT standards.
- We use RED for crossed cables (or more commonly now a red heat-shrink collar at each end).
- All our crossed wiring is done to the 100base-T4 spec which you can use with 10baseT networks - but NOT always the other way around.