Elenco Electronics TWT-1K Assembly And Instruction Manual page 5

WIRING CONFIGURATIONS
FOR RJ-45 JACKS
The RJ-45 indicates an 8-wire plug or jack. There
are many standards which dictate which wire pairs
connect to which pins on a plug or jack. Some of
these standards are listed below.
EIA/TIA-568A
Token Ring
Figure 9
Different Wiring Standards for RJ-45 8-Wire Jacks
The telephone line analyzer TWT-1 is designed to
test the standard configurations shown in Figure 9.
The Electronic Industries Association established
this sequence as
specification".
Shown below are the wire color codes for an
EIA/TIA-568A, shown in Figure 9.
T White / Green
3
R Green / White
3
T White / Orange
2
R Blue / White
1
T White / Blue
1
R Orange / White
2
T White / Brown
4
R Brown / White
4
EIA/TIA 568B
or AT&T 258A
10 Base T
a "commercial building
Figure 10
Typical color
scheme for eight
lines.
Red
Black
Blue
Orange
Orange
Blue
Black
Red
Shows detail of how the tip and ring are connected on
a eight connector cable for EIA/TIA-568A standards
on Figure 9.
PR3
1 2 3 4 5 6 7 8
+ = Tip
Plug
_ = Ring
Polarities
Shows how the phone wires relate to the LEDs on
the analyzer for EIA/TIA-568A.
PR 1
Wires 4 and 5
PR 2
Wires 3 and 6
-4-
EIA/TIA-568A
1 8
Green
Yellow
Gray
Brown
Brown
Gray
Yellow
Green
RJ-45 Jack
Figure 11
PR2
PR1 PR4
Figure 12
PR 4
Wires 7 and 8
PR 3
Wires 1 and 2