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Confirm the replacement works with your fire panel, elevator or alarm, keeps running through power and carrier outages, and is accepted by your inspector.
Replaces old copper phone lines that run fire alarms, elevator phones and fax machines.
MultiPath sends every call over cellular and your wired internet at the same time.
Two SIM cards let AirDial switch to another carrier when one carrier is down.
Ooma lists more than 48 hours of battery standby, or 82+ hours with the external battery.
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Replaces:Fire, elevator, alarm, fax, gate lines
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Battery backup:48+ hrs; 82+ hrs with add-on battery
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Cellular networks:Two SIMs; cellular plus wired internet
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Remote monitoring:Web portal with text and email alerts
PricingQuote only
Price terms
AirDial: custom quote. Hardware can be rented or bought; billing by business entity or location.
Best for: Buildings with fire panels, elevators or alarms still on copper lines
Plus 15+ more copper line replacement providers: Momentum, TPx, Comcast Business, Verizon Business and others.Compare them with us →
Facts come from each vendor's own website, checked in November 2026. Prices and features change, so your advisor confirms current terms in writing before you sign.
Logos and product names are trademarks of their owners.
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All product and company names are trademarks of their respective owners. GBTech.ai is an independent technology advisor and is not part of any vendor shown.
