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Appendix C - Cabling Diagrams
E&M Voice/Fax Channel Cable
White-Green
Green-White
White-Orange
White-Blue
Blue-White
Orange-White
Brown-White
White-Brown
M Input
E Output
T1 4-Wire Output
R 4-Wire Input, 2-Wire
T 4-Wire Input, 2-Wire
R1 4-Wire Output
SG (Signal Ground) Output
SB (Signal Battery) Output
E&M
CABLE
RJ45 Plug
* Cable wire is solid 24AWG. If connecting to a punch block, spade lugs may be cut off.
RJ45 Spade Lug
Wire Color Function
1 M Green/White Input
2 E White/Green Output
3 T1 White/Orange 4-Wire Output
4 R White/Blue 4-Wire Input, 2-Wire
5 T Blue/White 4-Wire Input, 2-Wire
6 R1 Orange/White 4-Wire Output
7 SG Brown/White (Signal Ground) Output
8 SB White/Brown (Signal Battery) Output
Voice/Fax Channel Connectors
E&M
VOICE/FAX CHANNEL 1
FXO FXS
12345678
2345
2345
12345678
Pin Connections
E&M Description FXO Description FXS Description
1M
2 E 2 N/C 2 N/C
3 T1 3 Ring 3 Tip
4 R 4 Tip 4 Ring
5 T 5 N/C 5 N/C
6R1
7SG
8SB
DSU Back-to-Back Cable
1
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1
RJ-48 Plug RJ-48 Jack