What life-safety codes does Ooma AirDial meet?

AirDial is designed around NFPA 72 for fire alarm communications and ASME A17.1 for elevator two-way phones, and it holds UL 864 and UL 62368-1 certifications for equipment safety. Its backup power and network design exceed NFPA 72's minimum requirements in both categories.

How does AirDial keep fire alarm panels compliant?

AirDial functions as a shared communications POTS replacement, delivering a standard loop-start analog line so no fire panel reprogramming is needed. All signaling travels over a Managed Facilities-based Voice Network rather than the public internet, and the device carries UL 864 certification along with over 8 hours of backup battery runtime, meeting the NFPA 72 standby power requirement.

Can AirDial power an elevator emergency phone during an outage?

Yes. Each port supplies loop current to the elevator call box, and AirDial's internal battery keeps both the unit and the connected phone running well beyond the 4-hour ASME A17.1 minimum. The remote management portal alerts administrators automatically if a unit switches to battery power or its charge runs low.

Is Ooma AirDial approved by fire marshals or other authorities?

Yes. AirDial is listed by the New York City Fire Department and approved by the California State Fire Marshal as a cellular communicator for compatible fire alarm control units. It also holds UL 864 certification and is designed to NFPA 72 guidelines, giving AHJs the documentation they typically look for.

Does AirDial support direct 911 dialing?

Yes. AirDial's platform supports Kari's Law, allowing direct 911 dialing from multi-line systems without a prefix, and RAY BAUM's Act, which requires dispatchable location data to accompany 911 calls.

How is AirDial different from standard VoIP for critical lines?

Standard VoIP typically routes at least part of a call over the public internet. AirDial is engineered to avoid that entirely, keeping calls on a Managed Facilities-based Voice Network from the subscriber location to the PSTN gateway. It's also backed by UL certifications and backup power that most general-purpose VoIP equipment isn't built to provide.

Ooma AirDial Compliance: Meeting Life-Safety and Regulatory Standards

When the phone company shuts off the copper line running to your fire alarm panel or elevator call box, "it still makes calls" isn't good enough. Fire marshals, elevator inspectors, and insurers don't just want a dial tone — they want proof that the replacement meets the same codes copper was built around. That's a much higher bar than picking up any VoIP box off a shelf.

This is exactly the problem Ooma AirDial was engineered to solve. It's a purpose-built POTS replacement designed from the ground up to satisfy the specific codes that govern fire alarms, elevator phones, and other life-safety equipment — not just approximate a dial tone and hope it passes inspection. Below is a breakdown of the standards that actually matter here, and how AirDial is built to meet each one.

The Codes That Actually Govern Fire Alarms and Elevator Phones

Before diving into AirDial specifically, it helps to know what you're actually being held to. A handful of standards cover almost every life-safety line in a commercial building:

NFPA 72 — the National Fire Alarm and Signaling Code, which governs how fire alarm panels communicate with monitoring stations.
ASME A17.1 — the Safety Code for Elevators and Escalators, which sets requirements for two-way voice communication in elevator cabs.
UL 864 — the safety standard for fire alarm control units and their accessories.
UL 62368-1 — the general safety standard for electronic and electrical equipment.
UL 2054 — the standard governing battery safety, both rechargeable and non-rechargeable.
MFVN (Managed Facilities-based Voice Network) — a network classification NFPA 72 introduced specifically because standard internet-based VoIP wasn't considered reliable enough for life-safety signaling.

Any device that wants to legally replace a copper line feeding one of these systems has to be built around these standards from day one — not retrofitted to squeak by.

Elevator Emergency Phones: Meeting ASME A17.1

ASME A17.1 (Section 2.27) requires two-way voice communication between an elevator cab and emergency personnel, along with backup power that lasts at least 4 hours.

AirDial handles this through its analog FXS ports — each one delivers a standard loop-start dial tone that powers the elevator call box exactly like the copper line it's replacing did, with no changes to the elevator equipment itself. On top of that:

Dual-path connectivity (Ethernet plus 4G LTE) runs active-active with automatic failover, so a single connection dropping doesn't take the call path down with it.
Battery backup exceeds code by a wide margin. AirDial's internal battery keeps the unit — and the elevator phone it powers — running for well beyond the 4-hour ASME minimum, with optional external battery packs available for facilities that want even more runway.
Remote monitoring catches problems before they become violations. The management portal flags it automatically if a unit switches to battery power or its charge drops low, so facilities teams can respond before an inspector finds a dead line during a walkthrough.

The net effect: an elevator call box connected to AirDial behaves exactly the way ASME A17.1 expects it to, without requiring any modification to the elevator system itself.

Fire Alarm Panels: Meeting NFPA 72 and UL 864

Fire alarm panels historically relied on two dedicated POTS lines for redundancy. NFPA 72 has since moved away from that "dual POTS" model, and replacement equipment now needs to fall into one of a few approved categories — AirDial is built as a shared communications (POTS replacement) device, meaning it reproduces the analog line the panel expects without touching the panel's own signaling logic. Nothing needs to be reprogrammed.

A few code requirements are worth calling out specifically, because they're where a lot of generic VoIP solutions fall short:

NFPA 72 Section 26.6.3.13.1.1 requires shared communications equipment to carry at least 8 hours of standby power. AirDial ships with an integrated battery that comfortably clears that bar, and it's expandable if a facility needs longer runtime.
NFPA 72 Section 26.6.4.1.3 requires that during an alarm signal, the line must "seize" — meaning it locks out other calls until the signal transmission finishes. Each AirDial FXS port operates as its own independent loop-start line and performs this line-seizure behavior the same way a legacy POTS circuit would, without multiplexing multiple virtual lines onto a single port.
UL 864 listing means an independent third-party lab has tested AirDial specifically for use as fire alarm accessory equipment — not just general telecom gear repurposed for the job.

Installation is refreshingly simple as a result: AirDial goes in at the building's telco demarcation point and, from the fire panel's perspective, looks like the same POTS lines that were already there.

Electrical and Battery Safety: UL 62368-1 and UL 2054

Communication reliability is only half the compliance picture — the hardware itself has to be electrically safe, especially when it's carrying a battery designed to run for hours during an outage.

AirDial's power supply and battery system carry certification under both UL 62368-1 (electronic/electrical equipment safety) and UL 2054 (battery safety, testing against fire and explosion risk). In practice, this means:

The default integrated battery delivers well over the NFPA-required 8-hour minimum standby period.
Optional external battery packs extend runtime further for facilities that want extra margin — useful for larger buildings or regions with longer typical outage durations.
Battery health and charge status are visible in real time through AirDial's remote management portal, with automatic alerts the moment a unit switches to backup power or its charge drops to a concerning level.

That real-time visibility matters more than it might seem — a battery that's silently degrading is a compliance failure waiting to happen, and most legacy copper setups gave facilities teams zero visibility into that risk at all.

Network Path: Why MFVN Matters More Than "Just Using VoIP"

This is the detail that separates a genuinely code-compliant solution from a VoIP box that happens to work most of the time.

NFPA 72 (2022 edition) defines an MFVN as a managed, facilities-based network that carries real-time signals end-to-end without the format changing along the way, maintained by the provider specifically to guarantee quality and reliability from the subscriber's building to the monitoring station. Standard consumer or business VoIP typically hands calls off to the public internet for at least part of that journey — which is exactly the unpredictability NFPA 72 was written to eliminate for life-safety signaling.

AirDial's architecture is built around avoiding that handoff entirely. Outbound signals travel first over an MFVN-compliant LTE cellular connection into a carrier data center, then across direct, managed links to a PSTN gateway — never touching the open internet at any point in the path. Where an authority having jurisdiction (AHJ) permits it, AirDial can also blend LTE and wired broadband paths for additional redundancy, but the underlying principle stays the same: a telephony-grade managed path, not a best-effort internet connection.

Certifications and Approvals That Matter to Inspectors

Compliance on paper only counts if the people signing off on your building agree with it. AirDial has picked up formal recognition from several of the authorities that actually matter in this space:

UL 864 certification from an independent third-party testing lab, covering fire alarm system accessories.
UL 62368-1 and UL 2054 certification for electrical and battery safety.
New York City Fire Department (FDNY) listing for use with fire alarm systems.
California State Fire Marshal approval as a cellular communicator for use with compatible fire alarm control units.
Wireless carrier certifications from AT&T, T-Mobile, and UScellular, plus PTCRB certification, confirming the LTE hardware meets recognized industry standards for cellular devices.

These aren't marketing checkboxes — they're the specific approvals AHJs, fire marshals, and elevator inspectors look for when deciding whether to sign off on a POTS replacement without additional review cycles. Having them in place up front is often the difference between a same-day approval and weeks of back-and-forth with an inspector.

Beyond Fire and Elevator Codes: Kari's Law, RAY BAUM's Act, HIPAA, and PCI

Life-safety codes aren't the only regulatory boxes a facility needs to check when it comes to phone lines. AirDial is also built with a few adjacent requirements in mind:

Kari's Law requires that multi-line phone systems allow direct 911 dialing without needing to dial a prefix first — AirDial supports this out of the box.
RAY BAUM's Act requires dispatchable location information to accompany 911 calls, so emergency responders know exactly where a call is coming from within a building, not just the building's general address.
HIPAA and PCI considerations benefit from AirDial's network design as well — because voice traffic stays on managed carrier paths instead of crossing the public internet, healthcare and payment-processing organizations get an added layer of protection around call data.

None of these are strictly "life-safety" codes in the fire-and-elevator sense, but they're frequently part of the same compliance checklist facilities and IT teams are working through during a copper migration — so it's worth having them covered by the same solution rather than bolted on separately.

The Bottom Line

Moving fire alarms, elevators, and other critical systems off copper doesn't have to mean gambling on whether an inspector will accept the replacement. Ooma AirDial was built specifically to answer the questions AHJs actually ask: Does it meet NFPA 72's MFVN requirement? Does it clear ASME A17.1's backup power minimum? Is the hardware UL-listed? Has an authority like FDNY or the California Fire Marshal already signed off on it?

For organizations facing a copper retirement deadline, that combination of engineering and third-party certification is what turns "we found a POTS replacement" into "we found a POTS replacement our fire marshal will actually approve."