TELECOM ADVISORY · COPPER SUNSET

AT&T Copper Shutdown & POTS Line Replacement Guide

If your business still runs fire alarms, elevators, fax lines, or phone systems over copper, the ground is already shifting under you. AT&T stopped accepting new copper landline orders in October 2025, began decommissioning copper in roughly 500 wire centers in June 2026, and plans to retire the large majority of its copper network by the end of 2029.

This guide breaks down what’s actually happening, which of your systems are at risk, and what your realistic replacement options are, so you can build a transition plan before a discontinuation notice forces your hand.

Schedule a Copper Dependency Audit

What’s Actually Happening with the Copper Sunset

For over a hundred years, plain old telephone service (POTS) ran on copper wires connecting your building to the phone network. That era is ending, and the pace picked up sharply in 2026.

Two things changed. First, copper is expensive to maintain — roughly $6 billion a year for AT&T — which is why the company is moving customers to fiber and wireless as fast as regulators allow. Second, the FCC cleared the regulatory path. On March 26, 2026, the FCC voted to eliminate the federal approval process carriers previously needed to retire copper POTS lines, meaning carriers can now shut down copper service with as little as 90 days’ notice.

The result is a “wire center” shutdown model. A wire center is the local facility that serves POTS lines in a given area. When one is decommissioned, every POTS line it serves is terminated permanently. AT&T isn’t alone — Verizon, Lumen, Frontier, and CenturyLink have all filed their own retirement notices, most targeting full copper retirement between 2026 and 2029.

THE DATES THAT MATTER

An Active Shutdown, on a Real Clock

OCT 2025

New Orders Stopped

AT&T stopped taking new copper orders and stopped processing moves, adds, and changes in affected areas.

JUN 2026

Decommissioning Began

AT&T started permanently decommissioning copper in about 500 wire centers — roughly 10% of its network footprint.

NOV 15 2026

Largest Tranche Cutoff

The largest FCC-approved tranche — 18 states and about 90,000 customers — can be discontinued from this date.

END 2029

Majority Retired

AT&T’s stated target to retire the large majority of its copper network nationwide.

The catch is the notice window.

Customers get only 90 days’ advance notice before termination — so a business could get its letter in mid-August for a November cutoff. A proper POTS line replacement typically takes 30 to 60 days minimum to plan and execute. Wait for the letter, and you’re already behind. For the full sequence of milestones, read our full breakdown of the AT&T copper shutdown timeline.

KNOW YOUR EXPOSURE

Which of Your Systems Are Still on Copper

Most businesses underestimate their exposure because the risk isn’t the phones on people’s desks — it’s the systems humming in the background that nobody thinks about until they stop working. Walk your building and check for these.



Fire Alarm Panels

Almost always on a dedicated POTS line for automatic monitoring, and subject to code requirements that don’t disappear when the copper does.



Elevator Emergency Phones

Legally required to maintain a working two-way connection to help. When the line goes dead, so does compliance.



Security & Alarm Systems

Many older panels dial out over copper to a monitoring center.



Fax Lines & Analog Modems

Still common in legal, medical, and finance workflows.



Legacy Desk Phone Systems

Older PBX and key systems tied directly to analog trunks.

Why copper mattered for life-safety systems: copper lines are loop-powered — the exchange supplies a small current down the wire, so the line keeps working during a building power outage. Any replacement has to account for that, which is why “just switch to VoIP” isn’t always a complete answer for a fire panel or elevator phone.

YOUR REPLACEMENT PATHS

Your POTS Line Replacement Options

There’s no single right answer. The best fit depends on what the line does, how critical uptime is, and whether the device needs backup power. Here are the three main paths.



VoIP & Cloud Phone Systems

For standard business voice, fax, and desk phones, VoIP is usually the most cost-effective and flexible move. It runs over your internet, scales easily across locations, and adds features copper never offered — a natural fit alongside modern VoIP and cloud communications solutions.



Fiber

Where it’s available, fiber delivers the bandwidth, reliability, and redundancy multi-site operations depend on. It’s the backbone most businesses will build voice and data on, and it pairs well with dedicated network connectivity services and AT&T business internet options.



Cellular / LTE Gateways

For fire alarms, elevator phones, and other analog devices that can’t easily move to VoIP, a cellular gateway (“POTS in a Box”) keeps the existing equipment in place while swapping copper for wireless. These typically include battery backup to preserve the loop-power behavior life-safety codes require.

On cost: the transition often pays for itself.

Legacy copper isn’t just going away — it’s getting expensive on the way out. Carriers have steadily raised POTS pricing, and a single legacy line can run several hundred dollars a month. Modern replacements frequently cost a fraction of that per line, so the switch often reduces your bill rather than adding to it.

Frequently Asked Questions

Are POTS lines being discontinued?

Yes. AT&T and other major carriers are actively retiring copper POTS lines, with AT&T targeting the large majority of its copper network by the end of 2029 and shutdowns already underway in hundreds of wire centers.

What replaces copper phone lines?

The three main replacements are VoIP or cloud phone systems for general voice, fiber for high-reliability data and voice, and cellular/LTE gateways (POTS in a Box) for analog devices like fire alarms and elevator phones.

Do copper phone lines still exist?

Yes, but they’re shrinking fast. FCC data shows roughly 15 million switched-access lines still in service nationwide, declining nearly 18% per year.

Can you still get a POTS line?

In most AT&T territory, no. AT&T stopped accepting new copper landline orders on October 15, 2025. Where copper is still technically available, pricing is climbing steeply.

How much does a POTS line cost?

Pricing varies by region and carrier, but legacy copper lines have risen sharply and commonly run several hundred dollars per line each month. Modern replacements are typically far less per line.

How many POTS lines are left in the US?

Around 15 million switched-access lines remained in service nationwide as of recent FCC data, down about 18% per year since mid-2022.

What is POTS line replacement?

It’s the process of migrating the phone and building systems currently running on copper POTS lines to a modern alternative (VoIP, fiber, or a cellular gateway) before the copper is decommissioned — while keeping critical systems compliant and online.

DON’T WAIT FOR THE NOTICE

Get Ahead of the Shutdown While You Still Have Room to Plan

The businesses that come through the copper sunset cleanly are the ones that inventoried their lines early and moved before a 90-day notice landed. C&M Tech Solutions works as your telecom advisor — not a single-carrier reseller. We’ll walk your systems, identify every device still riding on copper, and map the replacement path that fits your budget and uptime requirements, whether that’s VoIP, fiber, cellular backup, or a mix.

Start with a no-cost copper dependency audit. We’ll tell you exactly where you stand and what your options are — with no pressure to buy anything.