APPENDIX A: System Wiring Tables
Table A-B.Building Wiring (Contd)
25-Pair Cable

4-Pair

Cable
Term. Lead Functions
500
ATL
7101A
Cordless
D-inside
D-lnside
Cable
Conn.
Cable Conn.
Ckt. 25007300H
RS-232C
Color
Pin
Color
Block
No.Series Series
Term .
Code Num. code
Term.
6T T
V-BL
46 W-BL
1
RR
BL-V
21
BL-W
2
CT TXT
v-o
47
w-o
3
CR
TXR
o-v
22
o-w
4
P- PXT
V-G 48 W-G
5
P+
PXR G-V 23
G-W
6
V-BR 49 W-BR
7
BR-V 24 BR-W
8
Spare
v-s
50
s-v
25
A-5