Alarm - AT&T MERLIN LEGEND MLX- 10D Operator's Manual

Using Features

Alarm

If something is wrong with the system, the red light next to
your Alarm button goes on. Report the alarm immediately.
The red light stays on until the problem is cleared by your
system manager, an AT&T representative, or an authorized
dealer.
Must have programmed line button on console
4-10 A l a r m