AT&T System 25 - Manual (Page 254)

MAINTENANCE
Table 4-D. 25-Pair Connector to Backplane Designations
2 5 - P i n - C o n n . C a l l
P r o c
Pin No. W i r e
C o l o r
G S
T r u n k
Z T N 7 6
L S
T r u n k
Z T N 7 7
Tip Ring
L i n e
Z T N 7 8
A T L
L i n e
Z T N 7 9
M E T
L i n e
T N 7 3 5 B a c k p l a n e
P i n N o .
(Slots 1-12)
2 6
1
2 7
2
2 8
3
2 9
4
3 0
5
3 1
6
3 2
7
3 3
8
3 4
9
3 5
1 0
3 6
1 1
3 7
1 2
3 8
1 3
3 9
1 4
4 0
1 5
4 1
1 6
4 2
1 7
4 3
1 8
4 4
1 9
4 5
2 0
4 6
2 1
4 7
2 2
4 8
2 3
4 9
2 4
5 0
2 5 W-BL
BL-W
W - O
O - W
W - G
G - W
W-BR
BR-W
W - S
S - W
R-BL
BL-R
R - O
O - R
R - G
G - R
R-BR
BR-R
R - S
S - R
BK-BL
BL-BK
BK-O
O-BK
BK-G
G-BK
BK-BR
BR-BK
BK-S
S-BK
Y - B L
BL-Y
Y - O
O - Y
Y - G
G - Y
Y-BR
BR-Y
Y - S
S - Y
V - B L
BL-V
V - O
O - V
V - G
G - V
V-BR
BR-V
V - S
S - V
R D A
S G A
D C D A
D T R A
T D A
R D B
S G B
D C D B
D T R B
T D B
R D C
S G C
D C D C
D T R C
T D C
R D D
S G D
D C D D
D T R D
T D D
T 1 T 1 T 1
R 1 R 1 R 1
T 2 T 2 T 2
R 2 R 2 R 2
T 3 T 3 T 3
R 3 R 3 R 3
T 4 T 4 T 4
R 4 R 4 R 4
T 5 T 5 T 5
R 5 R 5 R 5
T 1
R 1
C T 1
C R 1
P - 1
P + 1
T
2
R 2
C T 2
C R 2
P - 2
P + 2
T
3
R 3
C T 3
C R 3
P - 3
P + 3
T
4
R 4
C T 4
C R 4
P - 4
P + 4
T
5
R 5
C T 5
C R 5
P - 5
P + 5
T
6
R 6
C T 6
C R 6
P - 6
P + 6
T
7
R 7
C T 7
C R 7
P - 7
P + 7
T
8
R 8
C T 8
C R 8
P - 8
P + 8
G N D
G N D
T 1
R 1
B T 1
B R 1
L T 1
LTR1
T
2
R 2
B T 2
B R 2
L T 2
LTR2
T
3
R 3
B T 3
B R 3
L T 3
LTR3
T
4
R 4
B T 4
B R 4
L T 4
LTR4
1 0 2
0 0 2
1 0 3
0 0 3
1 0 4
0 0 4
1 0 5
0 0 5
1 0 6
0 0 6
1 0 7
0 0 7
1 0 8
0 0 8
1 0 9
0 0 9
1 1 0
0 1 0
1 1 1
0 1 1
1 1 2
0 1 2
1 1 3
0 1 3
3 0 2
2 0 2
3 0 3
2 0 3
3 0 4
2 0 4
3 0 5
2 0 5
3 0 6
2 0 6
3 0 7
2007
3 0 8
2 0 8
3 0 9
2 0 9
3 1 0
2 1 0
3 1 1
2 1 1
3 1 2
2 1 2
3 1 3
2 1 3
3 0 0
2 0 0
T 6 T 6 T 6
R 6 R 6 R 6
T 7 T 7 T 7
R 7 R 7 R 7
ETU48
ETUGD
ETU48
ETUGD
ETU48
ETUGD
ETU48
ETUGD
T 8 T 8 T 8
R 8 R 8 R 8
G N D G N D G N D
GND GND GND G N D
G N D
Note: TN747 is same as ZTN76 and ZTN77. TN762 is same as ZTN79.
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