Gatm Wiring Chart; Figure 85 Gatm Rj-21 Connector; Table 36 Gatm4 Rj-21 Connector Wiring - Nortel BCM50 Installation And Maintenance Manual

Appendix H

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 (see

Figure 85 GATM RJ-21 connector

Table 36 lists the wiring details for the RJ-21 connector on the GATM4.
Table 36 GATM4 RJ-21 connector wiring (Sheet 1 of 2)
Line Pin Connection
26 Tip
1
1 Ring
27 Tip
2
2 Ring
28 No connection
—
3 No connection
29 No connection
—
4 No connection
30 Tip
3
5 Ring
31 Tip
4
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
Figure 85).
Default line numbers on
Expansion port 1
101
102
—
—
103
104
—
.
.
.
—
RJ-21 pin out
Default line numbers on
Expansion port 2
201
202
—
—
203
204
—
.
.
.
—
GATM wiring chart
237