Gatm Wiring Chart; Appendix G - Nortel BCM50 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 85 GATM RJ-21 connector
Table 43 lists the wiring details for the RJ-21 connector on the GATM4.
Table 43 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
Appendix G GATM wiring chart
Figure 85).
Default line numbers on
Expansion port 1
065
066
—
—
067
068
—
.
.
.
—
BCM50 Installation and Maintenance Guide
RJ-21 pin out
Default line numbers on
Expansion port 2
095
096
—
—
097
098
—
.
.
.
—
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