Fire Alarm POTS Line Replacement: NFPA 72 Compliant

Your fire alarm panel reports to a 24/7 central monitoring station, and for decades that report has traveled over copper POTS lines. POTS lines, the analog phone lines buildings have run on for decades, are being retired. AT&T, Verizon, Lumen, and Frontier have all filed discontinuance notices with the FCC, and in March 2025 the FCC cut the required customer notice period from 180 days to 90. A carrier can now give your building three months of warning before the copper goes dark.

NFPA 72 requires that communication path to be supervised and reliable. A fire panel sitting on a dead POTS line is the worst kind of failure: silent. Nobody knows the path is gone until the day there is a fire and the alert never reaches the station. We replace those lines with code-compliant POTS-in-a-Box hardware, configured for fire alarm communication and documented for your inspector.

The life-safety solution we install carries the approvals inspectors and insurers look for

Why a Fire Panel Cannot Sit on Plain Internet

A fire alarm communicator has to keep reporting during a power outage and a network outage, because that is exactly when fires happen. Running the panel off the building router alone fails that test, and in most jurisdictions it fails the inspection.

• Supervised communication. NFPA 72 requires the panel to detect and report a loss of the communication path. Our devices supervise both pathways.
• Backup power. The communicator carries 24 hours of internal battery, so it keeps reporting when building power is out.
• Two paths, not one. Cellular plus building internet with automatic failover, so a single outage never silences the panel.

Dual-Pathway, Not Just Cellular

Every device we install runs dual-pathway. The line travels over cellular and over your building internet at the same time, and it fails over automatically the instant either path drops. Cellular-only replacements lose the line in a dead zone or a tower outage. Internet-only setups lose it whenever the building connection blips. Two independent paths is what keeps the line up when it is needed most.

Works With Your Existing Fire Alarm Panel

You do not replace the fire alarm panel. The POTS-in-a-Box device replaces the carrier line behind it. It presents a standard analog dial tone to the panel’s DACT (digital alarm communicator transmitter), so the panel reports exactly as it did before. We support panels from every major manufacturer, and we test the full reporting path with your central station before we leave.

It Costs Less Than the Copper You Have Now

Carriers now charge $80 to $280 per copper line every month, and the price climbs every year as they push the last customers off the network. Our POTS replacement starts under $30 per line per month. For most buildings the replacement costs less than the copper line it retires, and it is a more reliable line.

Install Process

For a fire alarm line the install follows these steps, with extra documentation for the inspector:

1. Site visit, about 30 minutes. We identify every line, check signal on both pathways, and confirm the power source.
2. Number port. We port your existing numbers from the current carrier. It takes about two weeks and runs in parallel with the install.
3. Install the POTS-in-a-Box device. It plugs in where the copper line was. The equipment behind it does not change.
4. Test every line. We confirm a real dial tone and that the connected equipment recognizes the line.
5. Decommission the carrier line. We coordinate the cancellation so you never double-pay.

Get a Free Fire Alarm Line Assessment

Tell us your building count and current carrier. We audit the lines, confirm what your jurisdiction requires, and send a fixed-price migration plan within 5 business days.