Appendix C - Cabling Diagrams

E&M Voice/Fax Channel Cable

CABLE

E&M

RJ45 Plug

Green-White

M Input

White-Green

E

Output

White-Orange

T1 4-Wire Output

White-Blue

R

4-Wire Input, 2-Wire

Blue-White

T

4-Wire Input, 2-Wire

 

Orange-White

R1 4-Wire Output

Brown-White

SG (Signal Ground) Output

White-Brown

SB (Signal Battery) Output

 

* 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

12345678

12345678

FXO

2345

FXS

2345

 

VOICE/FAX CHANNEL 1

 

 

 

 

Pin Connections

 

 

 

 

E&M

Description

FXO

Description

FXS

Description

1

M

 

 

 

 

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

123

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Multi-Tech Systems DT102/xx, DT101/xx Voice/Fax Channel Cable, Voice/Fax Channel Connectors, DSU Back-to-Back Cable