AT&T 75 Wiring Manual page 430

66-TYPE HARDWARE
TABLE 4-A. 25-Pair Cable Termination on a 66-Type Connecting Block
4 - 4
(Contd on Next Page)
25-Pair Cable
Connector
Pin Pair Color
Numbers
W-BL
26 1
1 BL-W
27 2 W-O
O-W
2
28 3 W-G
3 G-W
29 4 W-BR
4 BR-W
W-S
30 5
5 S-W
6 R-BL
31
6 BL-R
32 7 R-O
7 O-R
33 8 R-G
8 G-R
34 9 R-BR
BR-R
9
3 5 10 R-S
10 S-R
11 BK-BL
36
11 BL-BK
37 12 BK-O
O-BK
12
66-Type
Connecting
Block
Terminals
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24