Gatm Wiring Chart - Nortel BCM200 Installation And Maintenance Manual

Appendix G

GATM wiring chart

Analog telephone lines are connected to the GATM4 or GATM8 through the RJ-21 connector on
the front of the media bay module (MBM) (see
Figure 196 GATM RJ-21 connector
Table 92 lists the wiring details for the RJ-21 connector on the GATM4.
Table 92 GATM4 RJ-21 connector wiring (Sheet 1 of 2)
Line Pin Connection
1 26 Tip
1 Ring
2 27 Tip
2 Ring
— 28 No connection
3 No connection
— 29 No connection
4 No connection
3 30 Tip
5 Ring
4 31 Tip
6 Ring
— 32 No connection
7 No connection
. . .
. . .
. . .
— 49 No connection
24 No connection
GATM
RJ-21 connector
Wire color
White-Blue
Blue-White
White-Orange
Orange-White
White-Green
Green-White
White-Brown
Brown-White
White-Slate
Slate-White
Red-Blue
Blue-Red
Red-Orange
Orange-Red
.
.
.
Violet-Brown
Brown-Violet
Appendix G GATM wiring chart
Figure 196).
BCM200/400 4.0 Installation and Maintenance Guide
RJ-21 pin-out
351