Core Concepts
VoIP vs Landline
By Myroslav Orshak · operates licensed carrier infrastructure · Updated September 2026
VoIP carries calls as data over the internet while a landline carries them as signals over dedicated copper wires — and nearly every practical difference between the two follows from that one fact.
How it works
A landline is a physical circuit: a pair of copper wires from your building to the phone company, powered by the phone network itself, carrying exactly one conversation. VoIP turns speech into data packets and sends them over the internet connection you already have — no dedicated wires, as many simultaneous calls as your bandwidth allows, and the 'line' exists wherever you sign in.
That's why the two behave differently in every dimension buyers care about. Cost: copper's per-line economics against VoIP's per-user subscriptions. Features: whatever the 1990s switch offered against menus, apps, texting, and recording included by default. Outages: copper survives power outages but dies with the wire; VoIP fails over to cell phones and any forwarding number the moment your building goes dark.
Why it matters
Because the choice is expiring. US carriers have been retiring the copper network for years with regulatory approval, and the remaining business landlines carry the cost of maintaining dying infrastructure — prices have climbed accordingly. For most businesses the real decision left is when and how to move, and doing it deliberately (numbers ported, 911 registered, failover configured) beats doing it the month the carrier sends a discontinuation notice.
The FCC streamlined the rules for retiring copper phone networks in 2017, and carriers have been withdrawing traditional lines area by area since. Businesses still on them are commonly quoted $50–$100 or more per line per month, several times the cost of an internet phone line.
Related terms
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See the best business phone systems →Frequently asked questions
Is landline call quality better than VoIP?
Not anymore, on a healthy connection. Copper's quality was consistent but capped — the network was engineered for narrow, tinny audio. VoIP on a steady business connection matches it easily and exceeds it with HD voice between modern systems. The honest caveat: VoIP inherits your internet's problems, so a congested or flaky connection produces choppy calls copper never had. Test the connection; don't romanticize the copper.
What happens to each in a power outage?
A traditional copper line often keeps working because the phone network powers it — the old reliability argument. But VoIP's answer is better in practice: when your building loses power or internet, calls automatically ring your cell phones or forward anywhere you choose, so the business keeps answering even though the building can't. Copper's resilience helps the phone on the wall; VoIP's helps the business.
Are business landlines actually going away?
Yes — this isn't speculative. Carriers have been withdrawing copper service area by area with FCC approval since 2017, new copper orders are broadly unavailable, and remaining lines get more expensive every year. The practical takeaway: treat any remaining landline as a migration deadline with an unknown date, and move on your schedule rather than the carrier's.
Is VoIP really cheaper for a business?
Almost always, and usually dramatically. Remaining business landlines commonly bill $65+ per line monthly before long-distance; VoIP runs $10–30 per user with calling, menus, texting, and apps included. The one cost VoIP adds is needing a solid internet connection — which nearly every business already pays for anyway.