Toshiba CTX28 manual Isdn Interfaces RJ11 Demarc Jack, RJ45 Demarc Jack

ISDN Interfaces

RBUU/RBUS Interface Unit

•The ISDN BRI-U wire pair is usually on the center pair of the Demarc jack, pins 3 and 4 on RJ11 and pins 4 and 5 on RJ45. Demarc coding is shown in Tables 7-13, 7-14and 7-15. Typical demarc jack wiring is shown in Figures 7-27and 7-28:

ISDN Interfaces

6

5

4

3

2

1

RJ11 Demarc Jack

BLACK

RED

GREEN

YELLOW

4726

Figure 7-27 Six-pin Modular Plug (RJ11)

Table 7-13 Quad Cable with RJ11 Demarc Coding

Conductor	Color	Pin	Use
Pair 1	Red	3	Line 1
	Green	4	Line 1
Pair 2	Yellow	5	Line 2/Power
	Black	2	Line 2/Power

1

2

3

4

5

6

7

8

RJ45 Demarc Jack

Figure 7-28 Eight-pin Modular Plug (RJ45)

WHITE-GREEN

GREEN

WHITE-ORANGE

BLUE

WHITE-BLUE

ORANGE

WHITE-BROWN

BROWN

4727

Strata CTX I&M 06/04 7-31