POTS Lines Are Going Away. Here Are Your Replacement Options.

The copper phone lines that have powered American offices for a hundred years are going away. Carriers no longer have to maintain them under FCC rules from 2019, and they're aggressively pricing customers off — POTS lines that cost $40 a month a few years ago now run $150 to $300+ depending on region.

If you've got alarms, elevators, fax machines, paging systems, or back-of-house phones on POTS, you need a plan. Here's what's happening and what your real options are.

What's actually happening

In 2019, the FCC issued an order (19-72A1) that freed telecom carriers from the obligation to maintain copper landline service. Before that, they were required by federal law to keep providing it indefinitely.

Since then, carriers have been doing two things:

• Quietly raising POTS prices to push customers off
• Letting the underlying copper infrastructure age out without repair

There's no single national deadline. It's a rolling sunset — and the timing depends on your carrier and region. But the direction is one-way.

What still runs on POTS (more than you think)

POTS isn't just desk phones. Anywhere a business plugged in an analog line over the last 40 years could still be on one. Common dependencies:

• Fire alarm panels — most older fire alarms have a POTS line going to the monitoring station
• Elevator emergency phones — legally required, often forgotten about
• Burglar alarms — older systems with phone-line backhaul
• Fax machines — yes, still
• Paging systems — overhead paging that runs through the phone system
• Credit card terminals — older POS gear
• Modems and dial-out backups — including PRI tail-drops
• Back-of-house phones — kitchens, warehouses, lobbies, courtesy phones
• Specialty equipment — postage meters, security gates, parking systems

If you're not sure what you have, you're not alone. We routinely find businesses with 5 to 15 POTS lines they didn't know were still on the bill.

Your replacement options

Four real paths. Which fits depends on what the line is doing.

Wireless POTS replacement

A small device sits where the old POTS line entered the building. Cellular SIM inside. Your equipment plugs into it the same way it plugged into the old line.

• Best for: alarm panels, elevators, single-line use cases where you need analog dial tone but don't want internet dependency
• Pros: carrier-grade reliability, works during internet outages, UL-listed options exist for fire alarm circuits
• Cons: device install required, monthly cost similar to a normal POTS replacement

VoIP with an Analog Terminal Adapter (ATA)

A small box converts internet-delivered voice into analog dial tone. Old equipment doesn't know the difference.

• Best for: fax machines, back-of-house phones, paging systems
• Pros: cheapest option per line, easy to add lines
• Cons: internet-dependent (both power and connection required), not always appropriate for fire alarm circuits

Full migration to UCaaS

If most of your POTS lines are powering desk phones in a small office, the right answer is usually to replace the whole phone system with a modern cloud platform.

• Best for: small offices with multiple traditional desk phones
• Pros: better features, cheaper at scale, eliminates POTS dependency entirely
• Cons: bigger project, doesn't replace alarm or elevator lines (those still need a separate plan)

SIP trunks

If you have an on-premise PBX you want to keep, SIP trunks let you replace the POTS or PRI lines feeding it.

• Best for: organizations with an existing PBX that still works for them
• Pros: cheaper than POTS or PRI, lets you keep existing handsets and call routing
• Cons: doesn't solve the alarm or elevator problem separately

The fire alarm compliance gotcha

Fire alarm communication circuits have specific regulatory requirements. UL 864 and NFPA 72 govern what can replace a POTS line for fire alarm monitoring. Two things to know:

1. Not every replacement option is compliant. Generic VoIP-with-ATA is generally not acceptable for fire alarm panels.
2. Wireless POTS replacement devices specifically certified for fire alarm use exist and are compliant.

If you have a fire alarm panel on POTS, the replacement decision is constrained by code, not preference. Same for elevator emergency phones (ASME A17.1 requirements).

Get this wrong and your insurance carrier or AHJ (authority having jurisdiction) can flag the building.

How to actually approach this

Three steps:

• Inventory. Pull every phone bill from every location and identify which lines are POTS and what each one is doing. This is harder than it sounds — bills often label POTS lines vaguely. We help customers do this routinely.
• Prioritize. Lines with compliance implications (fire, elevator) and lines on the most aggressive carrier price hikes go first. Back-of-house dial tones can wait.
• Execute by use case. Different lines often need different replacements. Don't force one solution everywhere.

For most businesses this turns into a 30–90 day project depending on size and complexity.

"Can't I just keep my POTS lines?"

You can — until your carrier stops offering them or prices them past your tolerance threshold. Both are happening.

Realistic 2026 timelines we're seeing:

• POTS pricing increases of 15–30% per year are typical
• New POTS installs are often refused in major metros
• Service restoration after outages now routinely takes 5–10 business days
• Carriers are actively reaching out to convert business customers off copper

The "do nothing" path isn't free. It just delays the decision while making the eventual migration more painful and expensive.

Common questions

The bottom line

POTS is ending. The replacement options are good, often cheaper, and frequently more reliable than what you're replacing. The only bad path is doing nothing and letting your carrier dictate the timeline and the cost.

If you want help inventorying what you've got and mapping a migration plan, that's what we do. Same pricing as if you went direct, plus an actual advocate.