POTS Replacement Marketplace
Compare every major POTS replacement option in one place. Find the right fit for your fire alarms, elevators, fax machines, and voice lines.
Ooma AirDial
Ooma
Purpose-built cellular POTS replacement. UL-listed for NFPA 72 fire alarm monitoring and ASME A17.1 elevator emergency phones. Works exactly like a POTS line — no rewiring required.
- ✓ UL-listed for NFPA 72 & ASME A17.1
- ✓ Drop-in replacement — no rewiring
- ✓ 24-hour battery backup
- ✓ Remote monitoring & management
- ✓ Works with all major cellular carriers
COEO POTS Replacement
COEO
Enterprise-grade POTS replacement supporting up to 8 lines per device. UL-listed and purpose-built for businesses needing reliable multi-line coverage with full day battery backup.
- ✓ Up to 8 lines per device
- ✓ UL-listed
- ✓ 24-hour battery backup
- ✓ Ideal for multi-line business deployments
- ✓ Reliable CX-focused service
For2Fi POTS Replacement
For2Fi
Flexible POTS replacement solution covering 1 to 1,000+ lines. Hardware and installation are included in the per-line price — no upfront NRC or installation fees. UL-listed with 24-hour battery backup.
- ✓ Hardware & installation included
- ✓ No upfront NRC or install fees
- ✓ Scales from 1 to 1,000+ lines
- ✓ UL-listed
- ✓ 24-hour battery backup
MetTel POTS Transformation
MetTel
Enterprise and federal-grade POTS replacement (PIAB hardware) built on MetTel's private, geographically redundant Smart Network. NFPA 72, UL & ASME A17.1 certified — recognized as an MFVN by the NYC Fire Department and CA State Fire Marshal — with nationwide turnkey installation and 24/7/365 managed monitoring.
- ✓ NFPA 72, UL & ASME A17.1 certified for fire alarm & elevator lines
- ✓ Turnkey installation by MetTel's nationwide technician network
- ✓ Up to 48-hour battery backup on certain models
- ✓ Private Smart Network with 70+ carrier access & local e911
- ✓ 24/7/365 managed monitoring with AI-powered alerts
Side-by-Side Comparison
All six solutions at a glance.
| Solution | Price | Minimum Lines | Battery | UL Listed ⓘ Underwriters Laboratories (UL) Certified Required by NFPA 72 for fire alarm communications and ASME A17.1 for elevator emergency phones. Only UL-listed devices are compliant for life-safety applications. | Best For |
|---|---|---|---|---|---|
| Ooma AirDial Ooma | $35–45/line/mo | 1 | 24 hrs | ✓ Yes | Fire Alarm, Elevator, Security, Gate & Intercom, Voice |
| COEO POTS Replacement COEO | $40–50/line/mo | 8 | 24 hrs | ✓ Yes | Voice, Security, Fire Alarm, Elevator |
| For2Fi POTS Replacement For2Fi | $50/line/mo (incl. hardware & install) | 1 | 24 hrs | ✓ Yes | Voice, Security, Fire Alarm, Elevator |
| MetTel POTS Transformation MetTel | $25–38/line/mo | 4 | 48 hrs | ✓ Yes | Voice, Fax, Security, Fire Alarm, Elevator, Gate & Intercom |
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🔥 Fire Alarm Panels
NFPA 72 requires a UL-listed communicator. Ooma AirDial and COEO are UL-listed. Do not use a generic cellular gateway for a fire panel.
Fire alarm POTS replacement guide →🛗 Elevator Emergency Phones
ASME A17.1 requires a working two-way communications device. Ooma AirDial is specifically certified. Used by 3Phase Elevator nationwide.
Elevator POTS replacement guide →📠 Fax Machines
Fax over cellular is notoriously unreliable. Mettel POTS+ has the best fax support. Alternatively, switch to a cloud fax service and retire the POTS line entirely.
Fax POTS replacement guide →🏢 Multi-Location Buildings
Granite EPIK and Cradlepoint offer centralized management portals built for portfolios. DataRemote is strong for high-density deployments with many lines per building.