Demand for plain old telephone service (POTS) replacement is already accelerating as telecom providers actively retire copper networks and organizations begin responding to shutdown notices and rising costs. What was once a gradual transition is now becoming a deadline-driven infrastructure shift.

According to Channel Futures, this transition is one of the largest infrastructure replacement cycles in telecommunications. Millions of mission-critical devices still rely on POTS lines, including fire alarms, elevator phones, security systems, and building access controls. As those copper lines disappear, organizations must replace them with modern connectivity solutions to maintain reliability, safety, and compliance.

This is not a simple upgrade. Replacing POTS lines requires evaluating existing infrastructure, selecting appropriate alternatives, and coordinating installation and testing across multiple locations. For organizations with distributed sites, this quickly becomes a large-scale operational effort that requires planning, resources, and access to skilled technicians.

What is POTS, and why is it going away?

POTS refers to traditional analog telephone lines that run over copper wiring and connect to the public switched telephone network. For decades, this infrastructure powered voice communications and supported critical building systems. Many organizations still rely on POTS lines to support systems such as fire alarms, elevator emergency phones, fax machines, security alarms, and building access controls. However, maintaining copper infrastructure has become increasingly expensive for telecom providers.

Regulatory changes have also made it easier for carriers to retire legacy networks. As a result, major providers such as AT&T and Lumen are discontinuing POTS services  and transitioning customers to digital and IP-based services, a shift commonly referred to as the “POTS sunset.”

The timeline for copper network retirement

The transition away from copper infrastructure has been underway for several years, but it is now entering a more urgent phase. Telecom providers have already begun issuing shutdown notices and discontinuing legacy POTS services, forcing organizations to act on previously deferred upgrades.

One of the most significant milestones is approaching quickly. In June 2026, AT&T is expected to begin decommissioning copper facilities across roughly 500 wire centers nationwide. However, this is not a single, industry-wide cutoff date. Other providers are also phasing out copper-based services. For example, Lumen has already stopped accepting new orders or changes for POTS lines in many regions, signaling a broader transition away from legacy infrastructure. Other regional providers have also stopped selling new POTS lines and are “grandfathering” existing services ahead of full retirement.

Even without a single shutdown date, the transition is already underway. Pricing increases, service limitations, and direct carrier notifications are triggering replacement projects across industries. As legacy infrastructure becomes more expensive and harder to maintain, organizations are being pushed to act sooner rather than later.

For organizations managing distributed locations, this shift means identifying where legacy phone lines still exist and coordinating upgrades before service disruptions occur. As copper facilities are retired over time, demand for POTS replacement will continue to grow as businesses migrate critical systems to modern connectivity alternatives.

What systems are at risk?

Many organizations assume the copper shutdown will primarily affect desk phones or legacy telecom systems. In reality, the biggest impact is on life-safety and building infrastructure. 

Fire alarms, elevator phones, security systems, and access control devices frequently rely on POTS lines to communicate with monitoring centers. Not replacing these connections could lead to potential safety, compliance, and operational risks for organizations that depend on these systems to protect employees, customers, and facilities. As a result, IT and facilities leaders are now working to identify where POTS lines still exist and determine how those systems will connect to modern networks.

Why this transition is more complex than it seems

Many of the systems affected by the POTS sunset were built to run on simple, highly reliable analog phone lines. These lines often remained operational during power outages and required minimal configuration. Modern replacements, such as cellular or IP-based solutions, operate differently. They rely on external power, network connectivity, and proper configuration to function correctly. Replacing a POTS line isn’t always a simple swap. It requires ensuring that new systems meet reliability, safety, and compliance requirements. Each installation must be properly configured, tested, and validated, especially for systems like fire alarms and elevator phones, where reliability is critical. If these systems are not properly transitioned, organizations risk service disruptions, failed inspections, or loss of connectivity for critical safety systems.

Why POTS replacement requires onsite work

Because of these requirements, replacing POTS lines typically involves physical work at each location, as well as multiple site visits. Devices that rely on analog dial tone need to be connected to new hardware, such as cellular gateways or IP-based solutions. Technicians must trace existing lines, install replacement equipment, configure connectivity, and test that critical systems continue to function properly.

For organizations operating hundreds or thousands of locations, this quickly becomes a logistical challenge. Each site may require auditing, installation, and validation, often within tight timelines driven by carrier shutdowns. At the same time, internal teams are often constrained by limited technician capacity and geographically dispersed sites. That makes POTS replacement not just a technical upgrade, but a large-scale field service coordination effort.

A major infrastructure transition is underway. Are you ready?

The retirement of copper networks marks the end of an era in telecommunications. Infrastructure that quietly supported business operations for decades is now being replaced by modern, IP-based connectivity.

For field service leaders, this shift requires planning upgrades for systems that are often out of sight but essential to daily operations. As deadlines approach and replacement projects accelerate, the challenge will be scaling quickly enough to keep up with demand.

Now is the time to identify where legacy lines exist, assess upgrade requirements, and plan for the scope of work ahead. Whether managing a handful of locations or a multi-site rollout, having the right resources and technician coverage in place will be critical to executing these projects successfully. Discover how on-demand labor can help you scale technician coverage and deliver upcoming POTS projects with confidence.