Nortel BCM50 Installation And Maintenance Manual page 223

Table 47 4x16 RJ-21 connector wiring (Sheet 2 of 2)
Set Pin Connection
39 Tip
14
14 Ring
40 Tip
15
15 Ring
41 Tip
16
16 Ring
42 No connection
—
17 No connection
. .
. .
. .
50 No connection
—
25 No connection
Wire color
Black-Brown
Brown-Black
Black-Slate
Slate-Black
Yellow-Blue
Blue-Yellow
Yellow-Orange
Orange-Yellow
. .
. .
. .
Violet-Slate
Slate-Violet
Appendix H 4x16 wiring charts
Default DN on
Expansion port 1
266
267
268
—
.
.
.
—
BCM50 Installation and Maintenance Guide
Default DN on
Expansion port 2
298
299
300
—
.
.
.
—
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