Why is my fire alarm phone line being disconnected?

Telephone carriers have been retiring legacy copper landline service, often described as the POTS sunset. Many fire alarm panels were installed with two copper phone lines as their communication path to the central station. As carriers discontinue that service, those panels lose a compliant path and must migrate to cellular or IP communicators.

Does VoIP work for fire alarm monitoring?

Standard VoIP or digital voice service is generally not an acceptable substitute for a fire alarm communication path. It typically does not survive a power outage, is not supervised in the way the standard contemplates, and may not reliably transmit alarm signal formats. Confirm any proposed path with your AHJ.

What does NFPA 72 require for communication paths?

NFPA 72 addresses supervising station communication methods and the supervision of those paths, including how quickly a failure must be annunciated. Acceptable arrangements commonly include a single supervised path or dual paths depending on the technology and the adopted edition.

How much does commercial fire alarm monitoring cost?

Monthly monitoring for a commercial fire alarm system commonly runs from roughly $35 to $90 per month depending on the number of signals, whether cellular or dual-path communication is used, and whether elevator recall or sprinkler supervisory services are included.

Can I switch fire alarm monitoring companies?

Usually yes. Check your current agreement for term length, automatic renewal language and the notice window for cancellation. Also confirm who owns the communicator, because if the equipment belongs to the incumbent it may need to be replaced when you switch.

What happens if my fire alarm loses its monitoring connection?

The panel should annunciate a trouble condition. An unmonitored fire alarm system may constitute an impairment depending on the occupancy and what your AHJ and insurance carrier require, which can trigger notification obligations and in some cases a fire watch.

Your fire alarm’s phone line is going away.

If your panel still dials out over two copper phone lines, that arrangement is on borrowed time. Carriers have been retiring legacy landline service, and when the line goes, your fire alarm loses its path to the central station. Call 1-855-876-3473 if you’ve already gotten a disconnection notice.

What’s actually happening

For decades the standard install was two POTS lines out of the fire alarm control panel. It was cheap, it was supervised, and every AHJ accepted it.

Carriers are now retiring that copper infrastructure. Buildings get moved to digital voice, or the line is simply discontinued. Either way the panel that was compliant on Monday may not be on Tuesday — and the building owner usually finds out from an annual inspection report, not from the phone company.

Why you can’t just plug it into VoIP

This is the most common wrong answer, and it’s an expensive one.

Standard digital voice service generally isn’t an acceptable fire alarm communication path. It usually doesn’t survive a power outage, it isn’t supervised the way the standard contemplates, and alarm signal formats don’t always transmit reliably across it. A system that appears to work in a test can fail in the event that matters.

What replaces it

Cellular communicator. The panel reports over a commercial cellular network. Common single-path solution where the adopted edition and the AHJ allow it.
Dual-path (cellular + IP). Two independent paths, each supervising the other. More resilient, and often what a jurisdiction or carrier wants on larger or higher-hazard occupancies.

Which one is acceptable depends on the edition of NFPA 72 your jurisdiction has adopted and on your AHJ. Don’t let a vendor tell you what’s required without reference to your jurisdiction.

What it costs

Commercial fire alarm monitoring commonly runs roughly $35–$90 per month depending on signal count, whether you’re on cellular or dual-path, and whether elevator recall, sprinkler supervisory or other services are included. The communicator itself is typically a one-time equipment and installation cost.

Compare that against the cost of a system found unmonitored at inspection: the correction notice, the re-inspection, and potentially a fire watch while it’s resolved.

Thinking about switching monitoring companies?

Most buildings can switch. Three things to check first:

Your term and auto-renewal. Many monitoring agreements renew automatically and require written notice inside a specific window. Read it before you sign anything new.
Who owns the communicator. If it belongs to the incumbent, it may leave when they do.
Who holds your account with the central station. Ask whether the signals are being resold, and who actually answers at 2 a.m.

What we do

Fire Solutions NW provides 24/7 central station monitoring for commercial fire alarm systems, plus the cellular and dual-path communicators to replace retiring phone lines. We’ve been doing commercial fire protection in Washington since 2016.

Because we also inspect and service alarm systems, the monitoring and the compliance documentation come from the same place — you’re not coordinating between a monitoring vendor and a service contractor when the AHJ asks for records.

We serve Kitsap, Mason, Jefferson, Clallam, Pierce, Thurston and King counties — Bremerton, Silverdale, Poulsbo, Port Orchard, Gig Harbor, Tacoma, Olympia, Shelton, Sequim, Port Angeles and Port Townsend.

Get a monitoring quote →

Or call 1-855-876-3473. Have your panel make and model handy if you can.

24/7 alarm monitoring · Fire alarm inspection & testing · Failed inspection or red tag? · Fire sprinkler inspection