Kingston Technology KNE8TX/WG Manuel D’Utilisation

Appendix B    Cabling Guidelines 

11 

KNExTX/WG User’s Guide  - Rev. A00                Kingston Technology Company 

 
UTP Cable Wiring 

100BASE-TX unshielded twisted-pair cables can be wired as "Straight-
Through" or, in some cases, "Crossover" depending on the application.  For 
workstations connected to a hub, use "Straight-Through' wiring illustrated in 
Table B-1.  In some instances, you may want to use "Crossover" wiring 
illustrated below in Table B-2. 

1 (TRX +)

2 (TRX -)

3 (RCV +)

6 (RCV -)

4, 5, 7, 8

1 (TRX +)

2 (TRX -)

3 (RCV +)

6 (RCV -)

Not Used

1 (TRX +)

2 (TRX -)

3 (RCV +)

6 (RCV -)

4, 5, 7, 8

3 (RCV +)

6 (RCV -)

1 (TRX +)

2 (TRX -)

Not Used

 

There are two governmental agencies: the Electronic Industry Association 
(EIA) and the Telecommunications Industry Association (TIA), which set the 
standard for all cable wiring requirements for commercial buildings.  For 
100BASE-TX networks, Category (CAT) 5 should be used.   

With the advent of 100Mbit network products, it is best to use higher quality 
CAT 5 cables like Belden or Helix as well as CAT 5-compliant patch panels 
and connectors while following the EIA/TIA wiring standards.  100 Ohm 
UTP/STP CAT 3, 4 & 5 type cables use 4-pair UTP wiring. 

Refer to the illustrations on page 12 for standard 100BASE-TX wiring and 4-
pair 100Mbit wiring using either T568A (Table B-3) or T568B (Table B-4) 
wiring standards.  Both T568A and T568B wiring configurations are 
compatible with 10BASE-T and 100BASE-TX and require no special hardware 
configurations.  However, it is highly recommended that only one wiring 
scheme be used in premise wiring to avoid potential problems.