Business Telephone Line: Costs, Providers & How to Set One Up

Between VoIP, traditional landlines, and everything in between, picking the right telephone line for business use can feel more complicated than it needs to be. If you're new to running a telephone line business setup, this guide breaks down what a business telephone line actually costs, how the setup process works, and which providers are worth your money.

What Is a Business Telephone Line?

A business telephone line is a dedicated phone number and calling service that a company uses to make and receive calls separately from any employee's personal phone. It typically includes standard features like voicemail, call forwarding, and caller ID, and today it runs primarily over VoIP technology rather than a traditional copper wire connection. It gives your business a professional presence, lets you route calls to the right person or department, and often comes with features a personal cell phone plan doesn't include by default.

Historically, a telephone line for business meant a copper analog line run by your local phone company. Today, most new business telephone line setups run over the internet using VoIP (Voice over Internet Protocol) instead of a physical wire, often through a VoIP softphone app rather than a physical handset. This shift matters because it changes what a business telephone line actually is: less of a piece of hardware, more of a piece of software connected to a number.

It's also worth having a real line at all, rather than routing everything through a personal cell number. McKinsey's research on customer care found that live phone conversations remain one of the most preferred ways customers reach a company for support, a preference that holds even among younger, digitally native customers. A dedicated line signals that a real business is on the other end of that call.

Business Telephone Line vs. VoIP: What's the Difference?

This is one of the most common points of confusion, so let's clear it up. A business telephone line is the service — the phone number and calling capability your company uses — while VoIP is the technology that increasingly powers that service.

Research and Markets pegs the global VoIP services market at roughly $151 billion in 2025, projected to keep growing at a double-digit rate through the end of the decade.

That growth reflects a broader shift away from copper landlines: according to the CDC's National Center for Health Statistics, roughly three out of four U.S. adults now live in households without a landline at all, relying on wireless service instead. Business communication has followed the same trajectory.

In practical terms, if you sign up for a modern telephone business line today, there's a good chance you're getting a VoIP line whether the provider calls it that or not.

That trend is accelerating, not slowing down:

Gartner's 2026 Magic Quadrant for Unified Communications as a Service, reported by UC Today, projects that a majority of organizations will run enterprise calling through cloud platforms by 2028, up sharply from where adoption stood just a few years ago. The table below breaks down the differences that matter most to you as a buyer.

Whichever direction you go, the table above should give you a clearer sense of where your money is actually going each month.

How Much Does a Business Telephone Line Cost?

The honest answer is that business telephone line pricing depends on the provider, the number of users, and which features you need, but most VoIP plans land between $20 and $40 per user per month.

Here is the average price per solution.

So, how much is a business telephone line going to cost you specifically?

Multiply the per-user rate by your team size, then check whether the provider charges extra for things like:

• A toll-free number
• Call recording
• Additional phone numbers

Those add-ons can meaningfully change your final bill. If you're still asking how much is a business telephone line likely to run for your specific team, the table above is the fastest way to ballpark it before requesting quotes.

Factors That Affect Cost

A few variables drive the cost of business telephone line ownership up or down.

Getting a clear read on the true cost of business telephone line ownership means looking past the advertised rate and into what's actually included, since two providers advertising nearly identical business telephone line costs can differ once you add taxes, E911 fees, and per-number charges. Some of that cost comes down to infrastructure choices covered in more depth in this overview of VoIP solutions for business.

Here are the top factors that affect cost:

1. Number of users. Most VoIP providers price per seat, so a five-person team pays a fraction of what a fifty-person call center pays.
2. Contract length. Annual plans are typically 15–20% cheaper than month-to-month billing.
3. Hardware. Desk phones aren't required with most VoIP setups, but if you want them, expect to pay $50–$150 per handset.
4. Advanced features. Call analytics, CRM integrations, and international calling plans usually sit behind higher-tier pricing.

A small business telephone line doesn't need to include every enterprise feature on the market, just the ones your team will actually use day to day. Once you've weighed these factors against your budget, you'll have a much clearer picture of what a realistic monthly spend looks like for your team.

Best Business Telephone Line Providers

Not every business telephone line provider is built for the same kind of company, so the right pick depends on your team size, budget, and which features you'll actually use. Below are a few of the most established options.

Our roundup of virtual phone services digs into several more if none of these are quite the right fit, along with who they tend to work best for.

Here is an overview of top picks:

1. Ringy — A strong choice for sales-focused businesses that want CRM, business calling, SMS, automation, and sales tools combined in one platform.
2. RingCentral — A well-rounded pick if you want phone, video meetings, and team messaging under one login. It also integrates with tools like Microsoft 365 and Google Workspace.
3. Vonage Business — Known for flexible plan structures and add-on features, making it a good fit for businesses that want to customize their communications setup.
4. Ooma Office — A straightforward option for small businesses that want a professional phone system without a complicated setup.
5. Grasshopper — A lightweight option built for solopreneurs and very small teams that mainly need a professional business number with call forwarding and basic phone features.
6. Nextiva — A good fit for businesses that want built-in analytics, reporting, and customer-experience tools alongside their business phone system.

If you're comparing options, it's worth requesting a demo or trial from two or three business telephone line providers before committing, since the interface and call quality can vary more than the marketing pages suggest. There's no single best business telephone line for every company.

The right fit depends on your team size, budget, and how much you rely on advanced call features. Some providers still market this as a telephone business line rather than a business telephone line, but the underlying service is the same.

How to Set Up a Business Telephone Line

If you've been wondering how to get a business telephone line without a drawn-out install process, the good news is that getting a new business telephone line running is far less involved than it used to be. This section covers exactly how to get a business telephone line up and running, from picking a number to placing your first test call. Here's how to set up business telephone line service in five straightforward steps:

1. Choose a provider and plan. Match the plan to your team size and the features you actually need — don't overbuy.
2. Pick your number. You can usually choose a new local or toll-free number, or port an existing number over from your current provider. Under FCC rules, simple ports must be completed in one business day, so switching providers doesn't have to mean losing the number your customers already know.
3. Set up call routing. Decide how incoming calls should be handled: a single ring group, an auto-attendant menu, or direct extensions.
4. Connect your devices. Download the provider's softphone app, or connect a physical desk phone if you prefer hardware.
5. Test before you go live. Place a few test calls, check voicemail delivery, and confirm caller ID displays correctly.

Most providers walk you through how to set up business telephone line service within a guided onboarding flow, so you rarely need outside IT help unless your setup is unusually complex.

Our complete VoIP phone guide walks through the same process in more detail if you want a deeper look before you commit.

3 Line and Multi-Line Business Telephone Systems

A single line works fine for a solo operator, but most growing teams need more. A 3 line business telephone system allows three simultaneous calls, which is a common starting point for small offices that field a moderate amount of inbound traffic without needing a full call center setup.

Larger teams typically move to multi-line systems that support dozens or hundreds of concurrent calls, along with features like call queues, skills-based routing, and supervisor monitoring, often built around a built-in VoIP phone and dialer rather than separate hardware for each line.

The good news is that with a cloud-based business telephone line, scaling from three lines to thirty is usually just a matter of adjusting your subscription rather than installing new hardware.

Business Telephone Line and Internet/Broadband Bundles

Because most business telephone lines now run over VoIP, your business telephone line and internet service are more connected than they used to be. Some providers, particularly regional ISPs, offer a business telephone line and broadband bundle that combines your internet connection and phone service into a single bill.

Bundling can simplify billing and sometimes shaves a few dollars off the combined cost, but it's worth checking the fine print.

Before you sign up for any business telephone line and broadband package, confirm what happens to your calls during an internet outage. If your internet goes down, a bundled phone line typically goes down with it, whereas a phone line from a separate VoIP provider can often fail over to a mobile app on cellular data.

Weigh that tradeoff against the convenience of one bill and one point of contact for support.

Finding Cheap Business Telephone Line Deals

Looking for a cheap business telephone line without cutting corners on reliability? The cheapest business telephone line usually comes down to billing cycle, seat count, and timing. A few practical tips:

• Compare annual vs. monthly billing. Annual commitments almost always unlock the cheapest business telephone line rates a provider offers.
• Watch for new-customer promotions. Many providers run limited-time business telephone line deals, especially around the start of a new fiscal year.
• Only pay for the seats you need. It's tempting to buy a bigger plan "for growth," but most providers let you add users on demand.
• Ask about bundling discounts. If you're already paying for internet or a CRM, check whether the provider offers a discount for bundling in phone service.

None of this means going with the absolute lowest bidder — a small business telephone line that drops calls or has spotty support isn't actually cheap once you factor in the cost of missed business.

FAQ

Do I need a business telephone line if I already use my personal cell phone?

Yes, in most cases. Mixing personal and business calls on one number makes it harder to separate work hours from personal time, and it looks less professional to clients than a dedicated line with proper caller ID and voicemail.

Can I keep my existing phone number when switching providers?

Almost always. Number porting is standard across VoIP and traditional carriers, and under FCC rules simple ports must complete within one business day.

Do business telephone lines work during a power or internet outage?

It depends on the setup. Most VoIP lines fail over to a mobile app on cellular data if configured for it, but a line bundled with a single internet connection typically goes down with that connection.

How many lines does a small business actually need?

Most teams under 10 people do fine with one shared line and extensions rather than a separate line per employee, scaling up only when call volume genuinely requires simultaneous calls.

Choosing the Best Business Telephone Line for Your Needs

A business telephone line isn't just a phone number anymore. It's a piece of your company's infrastructure that affects how professional you sound, how quickly you respond to customers, and how much you spend every month doing it.

Whether you're setting up your first line or replacing an aging system, take the time to compare a few business telephone line providers, run the numbers on the true cost of business telephone line ownership, and pick a setup that can grow with your team.

Getting your telephone line business needs sorted early prevents headaches down the road as your team grows.

If your team relies on outbound calling as much as inbound, request a demo of Ringy to see how a built-in dialer, softphone, and CRM working together can replace a patchwork of separate phone and sales tools with one connected system.