---
title: "VoIP vs Landline: Which One Should Your Business Use?"
description: "VoIP vs landline: copper is being retired and 82% of business lines are already VoIP. See costs, features, and how to switch without losing your number."
url: https://businessphonesystem.net/blog/voip-vs-landline
updated: 2026-07-31
---

# VoIP vs Landline: Which One Should Your Business Use?

Landlines and VoIP both put a dial tone on your desk, but only one of them has a future. This guide compares cost, features, reliability, and safety in plain English, shows which lines truly cannot move to VoIP yet, and walks you through switching without losing the number your customers already know.

## TL;DR

- A landline carries calls over one copper wire to one wall jack. VoIP carries calls over the internet you already have, so your number rings your desk phone, computer, and cell phone at once.
- Landlines are not just fading, they are being retired. The FCC counts only 16 million copper lines left in the US, and 82% of business wireline connections are already VoIP.
- VoIP typically costs $15 to $30 per user per month with features included. Legacy copper business lines often run $50 to $100 or more per line, per industry cost guides.
- Fire alarm panels, elevator phones, and old fax machines should NOT move to regular VoIP. They need purpose-built cellular replacements, not a consumer VoIP adapter.
- You can keep your number when you switch. FCC porting rules say your old provider cannot refuse, even mid-contract.

## What is the difference between VoIP and a landline?

A landline carries your voice over a dedicated copper wire that runs from the phone company's office to a jack in your wall. VoIP carries your calls as data over the internet your office already pays for. The practical difference is where the number lives. A landline number is tied to one wall jack. A VoIP number lives in the cloud and rings your desk phone, computer, and cell phone at once.

Landline service is often called POTS, which stands for plain old telephone service. It is the same basic technology your grandparents used. The copper wire itself carries a small electric charge, which is why an old corded phone still works when the power goes out.

VoIP stands for voice over internet protocol. Ignore the acronym. It just means your calls travel over the internet instead of a copper wire. You can use real desk phones, a cordless handset, an app on your cell phone, or an app on your computer. To a caller, it sounds and works like any other phone call. If your office has an old phone box in a closet, that is a PBX, and our [PBX vs VoIP guide](/blog/pbx-vs-voip) covers that comparison.

The choice used to be a real debate. It is not anymore, because one of the two options is being shut down. That is the next section.

## Are landlines really going away?

Yes. Landlines are being retired right now, not someday. The FCC's own count shows only 16 million copper phone lines left in the entire US, against 64 million VoIP lines and 391 million cell phones. Copper lines are disappearing at 17.8% per year. Those numbers come from the FCC's Voice Telephone Services Report, with data through December 31, 2024, released in February 2026.

**82%**: of US business wireline connections are already VoIP, per the FCC Voice Telephone Services Report (data through December 2024). Only 18% still run on copper.

Here is the part most business owners have not heard. The government is no longer making phone companies keep copper alive:

- In March 2025, the FCC issued orders that streamline copper retirement and waived, for two years, the rule that carriers must offer a standalone voice replacement before shutting copper down.
- In March 2026, the FCC's Network and Services Modernization Order, per the FCC's own fact sheet, lets carriers grandfather old voice service, approves shutdown applications automatically after 31 days, and blocks state rules that would force carriers to keep copper running.
- Carriers are filing real retirement notices. An FCC public notice from January 2025 shows AT&T, through BellSouth, certifying copper retirement across multiple service areas.

Trade press reports go further. Telecompetitor and Light Reading report that AT&T stopped taking new copper orders on October 15, 2025, aims to retire most of its copper network by the end of 2029, and spends roughly $6 billion a year maintaining copper for about 5% of its customers. Treat those as reported figures, but the direction is not in doubt.

> **Nobody is banning landlines**
>
> The FCC simply stopped requiring carriers to maintain them. Carriers are retiring copper because almost nobody uses it and it costs a fortune to run. If your business is still on copper, the question is not whether to switch. It is whether you switch on your schedule or on the phone company's schedule.

## Is VoIP cheaper than a landline?

Usually, yes, and the gap gets wider the more features you use. Industry cost guides put typical business VoIP at $15 to $30 per user per month, with the auto attendant, voicemail to email, and mobile app included. Legacy copper business lines commonly run $50 to $100 or more per line per month once features and maintenance are added, and grandfathered copper pricing keeps rising as carriers push customers off.

For a real published example: as of August 2026, Ooma's official pricing page lists business plans at $19.95, $24.95, and $29.95 per user per month, with unlimited US calling and a virtual receptionist on the base plan. Two honest warnings before you compare quotes:

1. Taxes and fees are real. Industry cost breakdowns report that taxes and regulatory fees typically add about 15 to 25 percent on top of a VoIP sticker price. A $20 plan is not a $20 bill. Always ask for an all-in monthly number.
2. Feature for feature is where copper loses badly. On a landline, an auto attendant, hunt groups, and extra voicemail boxes are per-feature add-ons that stack up fast. On VoIP, they are included in the base plan.

For a line by line look at what the bill will really be, see our [business phone system cost guide](/blog/business-phone-system-cost) and our [breakdown of VoIP hidden fees](/blog/voip-hidden-fees).

**Tired of guessing what the bill will actually be? Business Phone System quotes one flat monthly price up front, with no fee stacking and no long term contract. Compare it to your current phone bill and keep whichever number is smaller.** → [Call for a flat quote](/contact)

## What do you get with VoIP that a landline cannot do?

A landline gives you a dial tone, caller ID, and basic voicemail on the handset. That is the whole list. A modern [VoIP phone system](/voip-phone-system) includes the tools an office actually uses: business texting from your main number, a mobile app so your number follows you, voicemail sent to your email, an auto attendant that greets and routes callers, and ring groups so one call rings several phones at once.

| Feature | Landline | VoIP |
| --- | --- | --- |
| Dial tone and caller ID | Yes | Yes |
| Voicemail | On the handset only | Sent to your email as audio plus a transcript |
| Texting from your business number | No. Customers who text you get silence. | Yes, SMS and MMS |
| Works outside the building | No | Yes, mobile and desktop apps |
| Auto attendant (press 1 for...) | Paid add-on, if offered | Included |
| Ring groups (one call rings many phones) | Paid add-on, if offered | Included |
| Call recording and call reports | Rare | Common |
| Connects to your CRM or other tools | No | Yes, on many systems |

The texting row deserves a second look. A growing share of customers text a business number before they ever call it. On copper, those texts vanish. No error message, no bounce. The customer just thinks you ignored them.

## Which is more reliable, VoIP or a landline?

Reliability depends on what fails. In a power outage, a corded phone on a copper landline keeps working, because the wire itself carries power. That is copper's one remaining advantage, and it is shrinking: the FCC's own orders describe the copper network as aging and deteriorating, and carriers have stopped investing in repairs. VoIP needs internet and power at your building, but your number does not go dead when either one drops.

Here is why. A VoIP number lives in the cloud, not in your building. If your internet goes out:

- Calls automatically forward to a cell phone. You set this failover once in the app, in about two minutes.
- Your auto attendant and voicemail still answer, because they run in the cloud.
- Your staff can keep making and taking calls from the mobile app on cellular data.

A copper line has no backup plan. If the wire is cut or the equipment at the phone company fails, your number is simply dead until a technician shows up, and repair times on the aging network are stretching. Two safety points every owner should know:

- 911 works on VoIP, with one duty on your side. Federal rules (47 CFR Part 9) require VoIP providers to deliver 911 calls using your Registered Location, the address on file for your device. Keep that address current, especially if you move a desk phone.
- Backup power is your job now. FCC rules (47 CFR Part 12) require providers of fixed phone service that is not line-powered to offer at least 8 hours of backup power, with a 24-hour option. For a business, a small battery backup on your internet router covers the same gap for well under one month of copper service.

And on sound quality: modern VoIP on a decent connection typically sounds better than copper, not worse. HD voice carries more of the human voice than an old copper line can. When VoIP sounds bad, the culprit is almost always a weak or overloaded internet connection, not VoIP itself.

## Should I keep a landline for my fire alarm, elevator phone, or fax machine?

Do not move fire alarm panels, elevator phones, or old fax machines onto regular VoIP, but do not plan to keep them on copper either. Fire alarms and elevator phones are life safety systems with their own codes, and a plain VoIP adapter usually fails inspection. The durable fix is a purpose-built cellular communicator, because the copper underneath these lines is being retired whether you act or not.

- Elevator phones. The elevator safety code (ASME A17.1) requires two-way communication, and inspectors generally want a dedicated, supervised line. The standard fix is a purpose-built cellular elevator communicator.
- Fire alarm panels. The fire alarm code (NFPA 72) requires supervised communication paths that detect their own failures. Industry sources note that a plain VoIP adapter typically fails inspection. The code-compliant path is a listed cellular or IP fire communicator, installed by your alarm company.
- Fax machines. Analog fax signals often garble over compressed VoIP. If you truly still fax, use a VoIP plan with T.38 fax support or switch to an online fax service.
- Burglar alarm dialers and rural sites with no real broadband round out the list.

Even these systems cannot keep the landline forever. The copper is going away underneath them. The answer for each one is a purpose-built replacement, not clinging to a dying wire. Talk to your alarm and elevator vendors this year, not the year the retirement notice arrives. For every other line in the building, a standard [small business phone system](/phone-system-for-small-business) covers the office side.

## How do I switch business phone providers without losing my number?

You port your number, and the law is on your side. FCC number portability rules give you the right to take your phone number to a new provider, and your old provider cannot refuse, even if you owe them money or are mid-contract. The number your customers know moves with you. Do not cancel the old service first. Sign up with the new provider, and they submit the port.

1. **Pick the new provider and sign up**: Your number ports in behind the scenes. You do not need to call your old carrier at all.
2. **Do not cancel your old service yet**: Canceling first can release the number. The port itself closes out the old line.
3. **Have a recent phone bill handy**: The new provider needs the account number and service address exactly as the old carrier has them. Mismatches are the top cause of port delays.
4. **Keep taking calls**: Your old line works normally until the moment the port completes.
5. **Plug in and go**: Desk phones arrive ready to use, and the mobile app works the same day.

Downtime during a clean port is typically minutes, not days. The most common snag is a mismatch between the bill and the port form, which is why the recent bill matters. For the full checklist, see our step by step guide to [switching business phone providers](/blog/how-to-switch-business-phone-providers).

**Want it handled for you? Business Phone System manages the entire port, so your number moves without you chasing your old carrier. Month to month, no long term contract, one flat quoted price, and a real person answers when you call support.** → [Get a port date and a flat quote](/contact)

## FAQ

### When will copper phone lines shut off?

There is no single national shutoff date, but the retirement is underway now. The FCC has approved rules that grant carrier shutdown applications automatically after 31 days and block states from forcing carriers to keep copper running. Trade press reports that AT&T stopped taking new copper orders in October 2025 and aims to retire most of its copper by the end of 2029. If you are on copper, plan your move before a notice picks the date for you.

Source: [FCC Fact Sheet, Network and Services Modernization Order (March 2026)](https://docs.fcc.gov/public/attachments/DOC-419252A1.pdf)

### Can I keep my business phone number if I switch to VoIP?

Yes. FCC number portability rules let you move your number to a new provider, and the old provider cannot refuse, even mid-contract. The new provider submits the port for you. The one mistake to avoid: do not cancel your old service before the port completes, because canceling first can release the number.

Source: [FCC number portability rules, 47 CFR Part 52 Subpart C](https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-52/subpart-C)

### Does VoIP work when the internet is down?

Your office phones need internet, but your number does not go dead. The number lives in the cloud, so calls automatically forward to a cell phone once you set the failover, and your auto attendant and voicemail still answer. Staff can keep calling from the mobile app on cellular data. A copper line, by contrast, has no backup at all when the wire fails.

### Does 911 work with VoIP?

Yes. Federal rules (47 CFR Part 9) require VoIP providers to deliver 911 calls using your Registered Location, the address on file for your service. The one thing you must do: keep that address current. If you move a desk phone to a new office or a home office, update the registered address in your account the same day.

Source: [47 CFR Part 9, 911 requirements for interconnected VoIP](https://www.ecfr.gov/current/title-47/chapter-I/subchapter-A/part-9)

### Can customers text my business number on VoIP?

Yes, and this is one of VoIP's biggest wins. Business texting lets customers send SMS and MMS messages to the same number they call, and your team replies from the app or desktop. On a copper landline, texting does not exist: a customer who texts your number gets silence and assumes you ignored them.

### Do I need special phones for VoIP, or can I keep my desk phones?

You need IP desk phones, and in many cases you do not need desk phones at all. VoIP providers ship phones that are ready to plug into your network, and the mobile and desktop apps can carry your whole line without any hardware. Some newer desk phones can be reprogrammed for a new provider. Old analog handsets from a copper system generally are not worth adapting.

## Further reading

- [FCC, Voice Telephone Services Report (data through Dec 31, 2024; released Feb 2026)](https://docs.fcc.gov/public/attachments/DOC-418460A1.pdf)
- [FCC Fact Sheet, Network and Services Modernization Order (March 2026)](https://docs.fcc.gov/public/attachments/DOC-419252A1.pdf)
- [FCC Order DA 25-250, Technology Transitions (March 2025)](https://docs.fcc.gov/public/attachments/DA-25-250A1.pdf)
- [eCFR, 47 CFR Part 9 (911 requirements for VoIP)](https://www.ecfr.gov/current/title-47/chapter-I/subchapter-A/part-9)
- [Ooma Office pricing page (as of August 2026)](https://www.ooma.com/small-business-phone-systems/)