The decline of POTS lines is hardly news. Plain Old Telephone Service — the copper-and-tone-pulse plumbing that has carried voice traffic for more than a century — has been quietly losing ground for years to higher-capacity, lower-cost digital alternatives. The transition is driven by aging copper infrastructure, regulatory rollbacks, and the simple economics of fiber and wireless.
Two things, however, still tend to surprise the organizations we work with: the rapidly escalating cost of the POTS lines they continue to pay for, and the fact that most of the reasons they think they still need them no longer apply.
The Decline of Copper-Based POTS Lines
POTS lines have been a fixture in business telecommunications for more than a hundred years. Maintaining that copper plant, however, has become prohibitively expensive for the carriers who own it. The Federal Communications Commission has facilitated the transition by easing regulations, allowing carriers to retire copper infrastructure without the obligations they previously carried to maintain it.
The result is predictable. Major carriers including AT&T, Verizon, and Lumen (formerly CenturyLink) are aggressively phasing copper out, and customers are being nudged — sometimes shoved — toward modern alternatives. A decade ago, there were close to 100 million POTS lines in service in the United States. Today the number is closer to 35 million, and it is shrinking quickly.
Cost and Reliability Concerns
Rising costs. The cost of maintaining copper is high, and carriers pass it directly to the customer. During several Billing Breakthrough™ assessments, LAM has uncovered POTS lines billing at more than $1,000 per line per month. That is not a typo, and unfortunately it is not unusual.
Declining reliability. Copper is susceptible to weather, water intrusion, and the simple passage of time. Repairs take longer because fewer technicians are trained on the legacy plant, and service interruptions stretch out as a result.
Modern Alternatives and Their Benefits
As copper retires, organizations are turning to digital replacements: POTS-in-a-Box solutions, hosted voice platforms, and cellular- and IP-based connectivity for the use cases that historically demanded a dial tone. The advantages tend to compound:
Cost savings. Replacing legacy POTS with a modern equivalent can reduce communication costs by fifty percent or more for the same functionality — often substantially more on lines that have drifted into four-figure monthly rates.
Enhanced features. Modern platforms unify voice, video, and messaging on a single backbone, which improves productivity and user experience without the cost premium of running parallel systems.
Regulatory compliance. Solutions like POTS-in-a-Box are engineered specifically to satisfy safety code requirements for fire alarms, elevator phones, and similar critical systems, using cellular or IP-based transport.
Misconceptions About POTS Necessity
One of the most persistent reasons organizations hold on to copper is the belief that elevators and security alarms still require a traditional POTS line. They generally do not.
Elevators. Current codes allow for cellular and VoIP-based elevator phones, and the equipment that supports them has matured into a reliable, code-compliant alternative to copper.
Security and alarms. Digital solutions provide reliable, monitored backup communication paths for fire and burglar alarms, and most jurisdictions now treat them as fully equivalent to legacy copper for compliance purposes.
If you are still paying for legacy copper POTS lines, the question is rarely whether you can replace them. The question is how much you are overpaying while you wait, and how to get out cleanly.