POTS Line Replacement: Copper Retirement, Costs, and Options

A POTS line replacement is a managed appliance and service package that delivers analog dial tone to legacy equipment over broadband and cellular networks instead of copper. The device presents standard RJ-11 analog ports to your fire panel, elevator phone, or fax machine, then carries that traffic across an internet circuit with LTE as a backup path.

US carriers are retiring copper infrastructure on active schedules right now. The following overview covers where copper retirement stands, what happens to buildings still running analog lines, and the replacement options available today.

Contact Brightlio for a free assessment of your analog lines and a quoted replacement design.

Are POTS Lines Going Away?

Yes. Copper POTS lines are being retired on published carrier schedules, and the process is well past the planning stage. Buildings in retired wire centers lose analog dial tone permanently.

This answer changed. For years the accurate response was that a full phase-out would take decades. Carrier and regulatory action through 2025 and 2026 compressed that timeline into a matter of years, and in many markets into a matter of months.

Three shifts drove the change:

1. The FCC removed the procedural friction that once slowed copper retirement filings.
2. Major carriers stopped selling copper lines and began filing retirement notices at scale.
3. Pricing on remaining copper lines rose to levels that force migration regardless of the technical deadline.

Rural areas retain copper longer than metropolitan markets. Copper remains the only available medium in some communities, and carriers cannot retire a wire center without a serviceable alternative in place. That distinction buys time in specific geographies. It does not reverse the direction of travel.

Copper Retirement Timeline and Key Dates

Date	Development
August 2019	The FCC adopts an order granting incumbent carriers relief from 1996-era duties to supply unbundled analog copper loops and related resale offerings to competitors.
August 2, 2022	The transition period on that relief ends. Federal requirements that kept copper-based POTS available in traditional form are reduced.
March 2025	The FCC’s Wireline Competition Bureau waives the requirement that carriers file copper retirement notices with the Commission, substituting website and trade-publication posting. The customer notice period shortens.
October 15, 2025	AT&T stops accepting new POTS orders, moves, and changes across wire centers in 18 states. Roughly 1,711 wire centers across 19 states enter a managed retirement schedule.
December 2025	AT&T receives federal approval to discontinue service at wire centers serving approximately 90,000 customers across 18 states.
March 26, 2026	The FCC unanimously adopts the Network and Services Modernization Order, FCC-26-19A1. Carriers gain broad authority to grandfather legacy copper service and face a faster path to discontinuance.
June 2026	AT&T begins permanent decommissioning of copper infrastructure in roughly 500 wire centers, about 10 percent of its network.
2029	AT&T’s target for complete copper network retirement.

A common misreading holds that the FCC eliminated POTS lines outright on a fixed date. That never happened. Regulators removed the obligations and the procedural steps that kept copper offerings in place, which cleared the way for carriers to retire copper at a pace of their choosing. Carriers are now choosing an aggressive pace.

Verizon, Lumen, Frontier, and CenturyLink have all filed retirement notices under the same framework. Lumen issued grandfathering notices across 14 states. Most carriers target full copper retirement between 2026 and 2029.

What Copper Retirement Costs Buildings That Wait

Prices on remaining copper lines rose sharply as carriers moved customers off the network. Increases of 100 percent or more are routine. Individual line pricing above $2,700 per month appears in current carrier billing.

The economics behind those increases are straightforward. Copper plant upkeep costs AT&T roughly $6 billion annually across a shrinking subscriber base. Every customer who leaves raises the per-line cost of serving those who remain.

Two other costs arrive with a retirement notice:

• Compressed procurement windows. A carrier notice arriving in a building with no line inventory and no pre-qualified vendor leaves almost no room for a standard purchasing cycle.
• Emergency installation premiums. Rushed site surveys, expedited hardware, and after-hours labor cost more than planned migrations.

Which Systems Still Depend on Analog Lines

Analog copper connectivity still carries the following systems in most commercial buildings:

• Fire alarm panels and communicators
• Elevator emergency phones
• Intrusion and burglar alarm panels
• Door and gate entry systems
• E-911 and campus emergency phones
• Fax machines
• Point-of-sale modems
• Medical alert devices
• Legacy analog voice lines

Replacing the endpoint hardware on these systems runs expensive and slow. Many carry municipal code obligations and require inspection or certification after any change. A fire alarm panel swap pulls in the authority having jurisdiction, a licensed installer, and a re-acceptance test.

Copper carries one more advantage that complicates migration. Traditional analog lines draw power from the carrier’s central office, so they keep working through a building power failure. Fiber and broadband services depend on a powered router at the customer premises. That difference made copper the default transport for mission-critical systems for decades, and it sets the bar any replacement has to clear.

How POTS Line Replacement Works

A POTS line replacement appliance is an enterprise-grade router with analog FXS ports, WAN and LAN ports, and a cellular radio. The unit sits between your legacy devices and the outside network.

The call path works in five steps:

1. Your analog device plugs into an RJ-11 FXS port on the appliance.
2. The appliance supplies dial tone and ring voltage to that device exactly as the copper line did.
3. The appliance converts the analog signal to IP.
4. Traffic routes to the public switched telephone network across your wired internet circuit, with the cellular radio available as a redundant path.
5. Cloud software monitors the unit, the connected lines, and the battery, then alerts your team on fault conditions.

Dual SIM support gives multi-carrier cellular redundancy. An integrated battery keeps the unit and its connected devices running through a power failure. Most units support at least eight hours of standby time, with extended battery packs available for longer runtime.

The term “POTS over LTE” appears in vendor material and misstates the design. Cellular serves as the backup path in most deployments. Primary traffic rides the wired internet connection.

POTS Line Replacement Compared to Other Options

Option	Works with existing analog devices	Survives power loss	Survives circuit loss	Best fit
POTS line replacement appliance	Yes, no endpoint changes	Yes, integrated battery	Yes, cellular failover	Fire panels, elevator phones, alarms, fax, any code-governed analog device
Fiber voice or hosted VoIP	No, requires IP endpoints or ATAs	No, depends on premises power	No, single path	Standard business voice and desk phones
SIP trunking to an on-premises PBX	Partially, through gateway hardware	No, depends on premises power	Depends on design	Multi-site organizations already running a PBX
Cellular-only line replacement	Yes	Yes, depending on unit	No wired path	Remote sites with no serviceable broadband

The appliance approach wins on legacy compatibility. Your fire panel keeps its wiring, its programming, and its certification, which removes the endpoint replacement cost from the project entirely.

Code Compliance for Fire and Life Safety Lines

NFPA 72 permits IP and cellular communicators for fire alarm signaling when the installation meets supervision and path diversity requirements. Acceptance rests with your local authority having jurisdiction, and vendor listings matter to that review.

Confirm local requirements before you specify hardware. The practical checklist for a code-governed line covers four items:

1. Supervision intervals that satisfy NFPA 72 for the signaling path in use
2. Path diversity through two independent transport methods
3. Battery duration that meets the standby requirement for the panel type
4. Current UL listings and, in California, a State Fire Marshal Building Materials Listing

Ooma AirDial for POTS Line Replacement

Ooma AirDial is an all-in-one POTS replacement that bundles hardware, cellular data, voice service, and management software at a single monthly cost. Frost & Sullivan named Ooma the 2026 POTS replacement leader.

Each AirDial unit provides four RJ-11 analog FXS ports, supporting up to four life-safety or legacy devices. Ooma’s patented MultiPath technology routes traffic across LTE and wired Ethernet simultaneously, so a fault on one path does not drop a call in progress. Dual SIM support switches carriers when one network becomes unavailable. External antennas address weak signal conditions in rural sites, concrete structures, and utility installations.

The integrated battery keeps connected systems operating for at least eight hours after a power failure, with extended options available for longer requirements.

AirDial addresses several compliance frameworks relevant to life-safety deployments, including UL listings, NFPA 72, the California State Fire Marshal Building Materials Listing Program, ASME A17.1 for elevator communications, and UN 38.3 for battery transport. The service runs on a managed facilities-based voice network, so traffic never crosses the public internet. Units carry certification with AT&T, T-Mobile, Verizon, UScellular, and PTCRB.

The Remote Device Management portal covers every unit and location in one dashboard, with signal strength, battery level, and line status visible per device. SMS and email alerts fire on outages, low battery, and calls to specified numbers.

Migration uses your existing safety systems with no endpoint replacement. Self-installation works for straightforward sites. Ooma offers professional installation and site surveys for larger deployments.

What a POTS Line Replacement Service Includes

POTS line replacement sells as a monthly service rather than a hardware purchase. You buy broadband connectivity plus a managed appliance in place of the copper lines. A standard package covers:

• The replacement appliance, with hardware rental or purchase options
• Cellular data and voice service on a managed SIM
• Professional site survey and configuration
• Installation, either self-service or dispatched
• Remote monitoring, alerting, and firmware management
• Ongoing support and line-level visibility

How to Prepare for a Carrier Retirement Notice

The planning window between a carrier’s decision and a dark line now measures in months. Organizations that complete these five steps before a notice arrives keep their options open:

1. Inventory every analog line. Pull carrier invoices and map each line to the device it serves and the room it sits in. Most buildings carry lines nobody can account for.
2. Cancel the lines you no longer use. Retired fax machines and disconnected modems still bill every month, and today’s per-line rates make that waste expensive.
3. Check code obligations per line. Separate the code-governed circuits from the convenience lines, because the two follow different replacement paths.
4. Confirm broadband and cellular coverage at each site. A site survey catches weak signal and missing circuits before they delay a cutover.
5. Pre-qualify a replacement vendor and pricing. A signed design and a quoted price shorten the response to a notice from months to weeks.

A Brief History of Plain Old Telephone Service

The public switched telephone network grew out of the first commercial telephone exchanges of the late 1870s and 1880s, following Alexander Graham Bell’s 1876 telephone patent. Over the following century it became a vast network of copper pairs carrying most of the world’s fixed-line telephone traffic. A copper cable connected each subscriber’s telephone to a local exchange, that line connected back into a carrier’s network, and the customer paid a monthly bill covering access and maintenance.

Copper local loops cost a great deal to deploy and maintain at scale, so the company owning that infrastructure typically held a monopoly in each local calling area. US regulation calls that company the incumbent local exchange carrier, or ILEC. The Telecommunications Act of 1996 opened local markets to competition and required ILECs to give competitive local exchange carriers access to key parts of their networks, including unbundled copper loops and retail services resold at regulated wholesale discounts.

Access technology moved on from there. Fiber, cable systems, and fixed wireless now deliver voice as VoIP rather than analog POTS, and a large share of households rely entirely on mobile service. The number of lines still riding copper loops keeps shrinking, which left ILECs maintaining aging plant for a customer base too small to justify the cost. Regulatory relief followed, and copper retirement followed that.

Why Brightlio for POTS Line Replacement

Brightlio partners with the leading providers in the POTS replacement market and delivers solutions for customers anywhere in North America. We design and quote your replacement at no charge. Our compensation comes as commission from the service providers, which leaves your pricing unaffected.

Our portfolio extends past POTS replacement into network connectivity, unified communications, colocation, cloud, and advisory services.

Get started with Brightlio today.

Related reading: our comparison of Ooma and Vonage.

FAQs

What is a POTS line replacement?

A POTS line replacement is a device and service package that takes over from copper analog lines. It presents analog FXS ports to fire panels, elevators, fax machines, modems, and phones, then carries that traffic over IP and cellular networks.

How does a POTS line replacement work?

The appliance supplies dial tone to the legacy device, converts the analog signal to IP, and routes calls across an internet circuit with cellular backup. Packages typically bundle battery power, remote monitoring, and managed SIM service.

Why do organizations need POTS replacement now?

Carriers are retiring copper service on active schedules and raising prices on the lines that remain. Critical systems still depend on analog connectivity, so a replacement keeps those systems working without a hardware upgrade at the endpoint.

Is POTS replacement code-compliant for fire and life safety?

NFPA 72 permits IP and cellular communicators that meet supervision and path diversity rules. Acceptance depends on your local authority having jurisdiction and on vendor listings. We recommend confirming local requirements before deployment.

Which systems usually move to a POTS line replacement?

Fire alarm panels, elevator emergency phones, intrusion systems, medical alert devices, fax machines, point-of-sale modems, and legacy voice lines.

What features matter most when selecting a unit?

Reliable FXS ports, cellular backup, clear supervision intervals, adequate battery duration, and strong remote management. Predictable monthly pricing ranks high for most teams.

Does the original device need changes?

No, in most cases. The analog device connects to the FXS port and operates as it did on copper.

How long does the battery backup last?

Most units support at least eight hours of standby time. Extended battery packs cover longer runtimes where fire and life-safety requirements call for them.

Who manages the service?

Vendors typically bundle hardware, cellular service, firmware updates, and monitoring into a managed subscription, which cuts onsite maintenance.

How much does POTS replacement cost compared to copper?

Monthly cost per replaced line generally falls well below current copper pricing, and the gap widens as carriers raise copper rates. One appliance covering four analog devices replaces four separate line charges.