Information Technology Reference
In-Depth Information
T568A
Ethernet 10/100BaseT
T
1
T
1
Pair 1
Pair 3
R
2
R
2
T
3
T
3
Pair 1
4
R
4
Pair 2
Pair 2
T
5
5
R
6
R
6
7
T
7
Pair 4
8
R
8
T568B / AT&T/Lucent 258A
T
Token Ring
1
1
Pair 2
R
2
2
Pair 1
T
3
T
3
Pair 1
R
4
R
4
Pair 3
Pair 2
T
5
T
5
R
6
R
6
T
7
7
Pair 4
R
8
8
USOC RJ-48S / TP-PMD / DDS
(For T1, see note 4)
R
USOC RJ-45S
T
Pair 2
(not used)
1
1
Pair 1
R
T
2
2
Pair 1
3
T
3
4
R
4
Pair 3
(T
5
T
5
MI
6
R
6
R
MIC)
T
7
T
7
Pair 2
Pair 4
(programming
resistor)
R
8
R
8
USOC -8 (RJ-61)
R
Arcnet
Pair 1
1
1
T
2
2
Pair 4
T
3
T
3
Pair 3
Pair 1
Pair 2
R
4
R
4
T
5
5
R
6
6
R
7
T
8
Pair
Name
Conductor
Color Code
(horiz. wire)
Solid Color
(internal jack)
Notes:
Pair 1
T1
White/Blue
Green
1. T
Ring.
2. When polarities are used,
Tip is
Tip, R
"
R1
Blue/White
Red
Pair 2
T2
White/Orange
Black
.
3. Jacks are viewed from the front.
4. T1 uses the RJ-48C and RJ-48X
variations: Pair 1 is pins 4 & 5,
pair 2 is pins 1 & 2).
, Ring is
"
R2
Orange/White
Yellow
Pair 3
T3
White/Green
White
"
R3
Green/White
Blue
Pair 4
T4
White/Brown
Orange
"
R4
Brown/White
Brown
FIGURE 6.13
The modular jack may be used for a variety of purposes. (See also Fig. 9.2.)
