AT&T has started phasing out copper POTS lines, with no new installs or changes in nearly 20 states beginning October 15, 2025—and most copper services slated to retire by 2029. That puts fire alarms, elevator phones, safety call boxes and other POTS-dependent devices at risk. Learn the timeline, the operational and compliance impacts, and how modern POTS replacement solutions like AirDial keep critical systems online.