Nortel Networks 400 4.0 User Manual
Appendix C GATM wiring chart
339
BCM200/400 4.0 Installation and Maintenance Guide
Appendix C
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
the front of the media bay module (MBM) (see
).
Figure 191 GATM RJ-21 connector
Table 87
lists the wiring details for the RJ-21 connector on the GATM4.
Table 87 GATM4 RJ-21 connector wiring (Sheet 1 of 2)
Line
Pin
Connection
Wire color
1
26
Tip
White-Blue
1
Ring
Blue-White
2
27
Tip
White-Orange
2
Ring
Orange-White
—
28
No connection
White-Green
3
No connection
Green-White
—
29
No connection
White-Brown
4
No connection
Brown-White
3
30
Tip
White-Slate
5
Ring
Slate-White
4
31
Tip
Red-Blue
6
Ring
Blue-Red
—
32
No connection
Red-Orange
7
No connection
Orange-Red
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
—
49
No connection
Violet-Brown
24
No connection
Brown-Violet
RJ-21 pin-out
RJ-21 connector
GATM