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VoIP vs. Landline: Differences, Pros and Cons

VoIP vs. Landline

As businesses become increasingly Internet-reliant, you may wonder whether investing in a landline system is still worth it. In the VoIP vs. landline battle, VoIP often comes out on top thanks to its cost-effectiveness, impressive features, and scalability. 

Whether you’re thinking of phasing out your existing landline system or are picking between the two, this guide can make your decision easier. 

VoIP vs. Landline at a Glance

Since VoIP became popular, the use of landlines in offices has drastically declined. However, both systems possess clear advantages and disadvantages, which we’ll outline below.

What is VoIP?

VoIP (Voice over Internet Protocol) allows you to make phone calls using the Internet instead of traditional telephone lines. Here’s a simple explanation, along with some pros and cons:


  • Affordable: VoIP often costs less than traditional phone services because it uses your existing Internet infrastructure and eliminates international calling fees.
  • Flexible: You can make calls from anywhere with an Internet connection, making it ideal for remote work and travel.
  • Feature-rich: VoIP services offer features beyond call forwarding, voicemail-to-email, and video conferencing, such as integrations with CRM software.
  • Scalable: Adding or removing phone lines is easy as your business or needs change.


  • Internet dependence: VoIP quality can suffer if your Internet connection is slow or unreliable.
  • Power outages: During power outages, your VoIP service may not work without a backup power source.
  • Lack of emergency features: Emergency services may need help locating you when you make a 911 call using VoIP because of a lack of a physical address.
  • Security concerns: VoIP is vulnerable to hacking and eavesdropping if not adequately secured.

What is a Landline?

A landline is a traditional telephone service that connects your phone to the public phone network through physical copper or fiber-optic wires. Here are a few advantages and disadvantages of landlines:


  • Reliable: Landlines often work during power outages and have a consistent signal quality.
  • High sound quality: Landline calls generally have high-quality audio with minimal distortion.
  • Private: Landline conversations are more secure and less vulnerable to hacking than VoIP.


  • Expensive: Landline providers often charge extra for long-distance calling and voicemail. In addition, it can be costly to maintain its physical infrastructure.
  • Not mobile: Landlines are tied to specific locations, so you can’t make calls on the go.
  • Limited features: Landlines offer fewer features than VoIP. 
  • Complex installation: Setting up a landline involves physical wiring and complex infrastructures that require technical expertise.
  • Obsolete technology: Landlines are becoming less common as people switch to mobile phones and internet-based communication. 

How Does VoIP Differ from a Landline Phone System?

VoIP and landline systems differ in technology—VoIP uses Internet connections, while landlines use fiber-optic wires to connect to public phone networks—these differences in connectivity cause various cost and flexibility distinctions.

VoIP offers greater mobility, allowing users to make calls from anywhere with an Internet connection, whereas landlines tie users to specific locations. 

In addition, VoIP has more advanced features like video conferencing and voicemail-to-email, while landlines may have a more limited set of features. However, landlines are known for their reliability during power outages and clear sound quality, while VoIP can depend on Internet quality and may lack consistent service during outages.

Advantages of Switching from Landlines to VoIP

Switching from landlines to VoIP offers several advantages.

You’ll Save Money

VoIP is often more cost-effective than traditional landlines because you can make local and international calls at lower rates. Many VoIP services offer competitive pricing plans and tiers, reducing monthly communication expenses.

Your Systems Will Be Portable

VoIP systems work anywhere with an Internet connection. This flexibility is precious for remote workers, travelers, and businesses with distributed teams, enabling seamless communication without being tied to a specific location.

You’ll Have More Features to Work With

VoIP services boast many advanced features, including integrations with other business tools. These features enhance productivity and communication efficiency.

You Can Scale When You Need To

VoIP systems are highly scalable, making adding or removing phone lines as your business grows or changes quick and affordable. You can adapt your communication infrastructure without significant hardware or infrastructure investments.

You’ll Expand Your Reach

VoIP’s global capabilities are especially beneficial for businesses with international clients or operations, as they reduce long-distance communication expenses and foster global connectivity.

Disadvantages of Switching from Landline to VoIP

Switching from a landline to VoIP offers many benefits, but there are also some disadvantages to consider.

Your System Will Depend on the Internet

VoIP calls rely on a stable and high-quality Internet connection. If your internet service is slow, unreliable, or experiences frequent outages, your VoIP call quality may suffer, leading to dropped calls or poor audio quality.

VoIP Doesn’t Function During Power Outages

A traditional landline can often still function with a power outage because it doesn’t rely on electricity at your location. VoIP, on the other hand, typically requires a powered modem or router. Without a backup power source like a generator or uninterruptible power supply (UPS), your VoIP service may go down during power failures.

911 Calls Won’t Be Reliable

VoIP can present challenges for emergency services. Unlike landlines, which are automatically associated with a specific address, VoIP may not provide accurate location information when you dial 911. To address this issue, it’s crucial to ensure your VoIP provider offers Enhanced 911 (E911) services.

You’ll Be Susceptible to Security Concerns

Strong security measures, such as encryption and firewall protection, are essential to protect your communication, as VoIP systems are prone to hacking, eavesdropping, and phishing.

There Might Be a Learning Curve

Switching to VoIP may require a learning curve for users and businesses unfamiliar with the technology. Setting up VoIP systems, configuring routers, and understanding the features can take time and resources initially.

You’ll Be Tied to a Service Provider

How reliable your VoIP service is depends on your internet service provider and the VoIP service provider. Service disruptions or outages with either can impact your ability to make calls.

Audio Quality May Vary

While VoIP generally provides good audio quality, it can be affected by network congestion or internet traffic, leading to occasional audio issues.

Frequently Asked Questions

Is VoIP better than landline?

VoIP is better than traditional landline systems because they are more affordable. In addition, they are flexible and scalable. However, some businesses still prefer the reliability of landlines. Ultimately, whether VoIP is better than a landline system depends on your business needs.

Can VoIP replace landlines?

VoIP can replace landlines for many users and businesses, especially if they have a reliable internet connection and are comfortable with the technology’s features and potential limitations.

Do I still need my landline if I have VoIP?

In most cases, having a landline becomes redundant if you have VoIP, as VoIP can fulfill the exact communication needs and offer additional benefits. However, some individuals or businesses may keep a landline for backup purposes or specific use cases.

Why is VoIP cheaper than landline?

VoIP is often cheaper than landlines because it utilizes existing internet infrastructure, reducing the need for expensive physical phone lines and infrastructure maintenance. Additionally, VoIP providers can offer competitive pricing due to lower operating costs associated with digital technology.

In Summary

If you’re a company with remote agents, are always on the go, are scaling your call center, or want to cut costs, switching to VoIP has its benefits. However, landlines remain relatively reliable for companies in locations with frequent power outages. 

Still, it should be expected that VoIP will become an increasingly popular choice. For businesses that want to keep up with the competition, switching to VoIP may make the most sense. 

Are you looking for the most reliable VoIP provider? ULTATEL has what you need. We boast impeccable uptime and features you won’t find anywhere else.

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