APPENDIX A: System Wiring Tables
Table A-B. Building Wiring
25-Pair Cable
4-Pair Cable
Term. Lead Functions
500
ATL
7101ACordless D-Inside
D-Inside
Cable Conn. Cable
Conn.
Ckt. 25007300H
RS-232C
Color PinColor Block
No.
Series
Series
Term ,
code Num.
code
Term.
1
T T
W-BL 26 W-BL
1
R R
BL-W
1
BL-W
2
CT
w-o
27
w-o 3
CR
TXR
o-w
2
o-w 4
P-
PXT
W-G 28
W-G
5
P+
PXR
Gw
3
G-W
6
W-BR 29 W-BR
7
BR-W
4
BR-W
8
2
T
T
w-s
30
W-BL
1
R R
s-w
5
BL-W
2
CT R-BL
31
w-o 3
CR
TXR BL-R
6
o-w 4
P- PXT R-O
32
W-G
5
P+ PXR
O-R
7
G-W
6
R-G
33
W-BR
7
G-R 8
BR-W
8
3T T
R-BR
34
W-BL
1
R R
BR-R
9
BL-W
2
CT TXT R-S
35
w-o 3
CR TXR
S-R 10
o-w 4
P- PXT
BK-BL
36
W-G
5
P+ PXR
BL-BK
11
G-W
6
BK-O
37 W-BR
7
O-BK
12
BR-W
8
4T
T
BK-G
38
W-BL
1
R R
GBK
13
BL-W
2
CT TXT BK-BR
39
w-O
3
CR
TXR
BR-BK
14
o-w 4
P- PXT BK-S
40
W-G
5
P+ PXR
S-BK
15
G-W
6
Y-BL
41
W-BR
7
BL-Y
16
BR-W
8
5
T
T
Y-o
42
W-BL
1
R R
O-Y
17
BL-W
2
CT Y-G 43
w-o 3
CR
TXR G-Y
18
o-w 4
P-
PXT Y-BR
44
W-G
5
P+
PXR BR-Y
19
G-W
6
Y-s
45 W-BR
7
S-Y 20
BR-W
8
A-4