Hardware Reference
In-Depth Information
If you want to create TP cables yourself, be sure your cable pairs match the color coding of any
existing cable or the color coding of any prebuilt cabling you want to add to your new network.
Because there are eight wires in TP cables, many incorrect combinations are possible. Several
standards exist for UTP cabling.
Tip
The key is to be consistent. Use the same scheme for all your cables, and ensure that anyone
else working on your network understands this scheme.
The most common standard is the AT&T 258A configuration (also called EIA/TIA 568B).
Table 17.4
lists the wire pairing and placement within the standard 8P8C (RJ-45) connector.
Table 17.4. 8P8C (RJ-45) Connector Wire Pairing and Placement for AT&T 258A/EIA 568B
Standard
In
Figure 17.9
, an 8P8C (RJ-45) cable connector is wired to the AT&T 258A/EIA 568B standard.
