RJ-21 Cable Pinouts for Fast Ethernet 12-Port PIC
Table 25: RJ-21 Pin Assignments
Ethernet Port Numbers
RJ-21 Pin Assignment
TX -
TX +
RX -
RX +
0
2
27
1
26
1
4
29
3
28
2
6
31
5
30
3
8
33
7
32
4
10
35
9
34
5
12
37
11
36
6
14
39
13
38
7
16
41
15
40
8
18
43
17
42
9
20
45
19
44
10
22
47
21
46
11
24
49
23
48
176
M5 and M10 Internet Routers Hardware Guide
