AT&T 75 Wiring Manual page 431

TABLE 4-A. 25-Pair Cable Termination on a 66-Type Connecting Block (Contd)
25-Pair Cable
Connector
Pair
Pin Color
Numbers
13 BK-G
3 8
13 G-BK
14 BK-BR
39
14 BR-BK
15 BK-S
40
15 S-BK
41 16 Y-O
16 O-Y
42 17 Y-BL
17 BL-Y
43 18 Y-G
18 G-Y
19 Y-BR
44
19 BR-Y
Y-S
45 20
20 S-Y
V-BL
46 21
BL-V
21
47 22 V-O
22 O-V
4 8 23 V-G
2 3 G-V
4 9 24 V-BR
24 BR-V
25
5 0 V - S
S - V
25
66-TYPE HARDWARE
66-Type
Connecting
Block
Terminals
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
4-5