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Appendix G GATM wiring chart 219
BCM50 Installation and Maintenance Guide
40 No connection Black-Slate
15 No connection Slate-Black
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49 No connection Violet-Brown
24 No connection Brown-Violet
Aux
(see
Note)
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 44 GATM8 RJ-21 connector wiring (Sheet 2 of 2)
Line Pin Connection Wire color
Default line numbers on
Expansion port 1
Default line numbers on
Expansion port 2