User's Manual

340 Appendix C GATM wiring chart
N0060612N0060612
Table 88 lists the wiring details for the RJ-21 connector on the GATM8.
Aux 50 Tip Violet-Slate
25 Ring Slate-Violet
Note: The Aux port supports full data speeds. When the line
is in use by an analog device, the icon is lit on the phone to
indicate it is in use. If you try to seize the line using the
phone, the display shows “in use.” Also, in the event of a
power failure, an analog set on line 1 goes active (powered
by the CO).
Table 88 GATM8 RJ-21 connector wiring (Sheet 1 of 2)
Line Pin Connection Wire color
126Tip 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
330Tip White-Slate
5 Ring Slate-White
431Tip Red-Blue
6 Ring Blue-Red
— 32 No connection Red-Orange
7 No connection Orange-Red
— 33 No connection Red-Green
8 No connection Green-Red
5 34 Tip Red-Brown
9 Ring Brown-Red
635Tip Red-Slate
10 Ring Slate-Red
— 36 No connection Black-Blue
11 No connection Blue-Black
— 37 No connection Black-Orange
12 No connection Orange-Black
7 38 Tip Black-Green
13 Ring Green-Black
Table 87 GATM4 RJ-21 connector wiring (Sheet 2 of 2)
Line Pin Connection Wire color