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How to Secure Your VoIP Phone System

How to Secure Your VoIP Phone System


There are many benefits attached to using a VoIP system over a landline phone. It’s cheaper, easier to set up, can be used worldwide, and comes packed with neat features that improve any business’s efficiency and effectiveness while handling customers’ calls. But more importantly, are VoIP systems secure?

Like analog phone systems, VoIP isn’t entirely safe and private. While authorities can wiretap conversations for both setups, hackers have an easier way to hack in and eavesdrop on VoIP calls. Since everything is online, anyone in the world can try to get access to the VoIP system and, if there are no security measures in place, attackers can hack the system in a relatively simple way. Consequently, it’s essential that companies switching over to this technology make certain they get a secure product and ensure their network is protected.

Is VoIP more secure than PSTN?

Unfortunately, almost every day there is news coming out about another security breach where criminals steal personal data from thousands of individuals. For this reason, it’s vital to understand whether or not VoIP is a secure way to speak with customers when compared to traditional phone systems.

The major difference between a public switched telephone network (PSTN) and voice over internet protocol (VoIP) is how data is transmitted and stored. Analog calls made via the traditional route travel through circuits where it’s easy for someone to listen in with basic eavesdropping equipment. On the other hand, VoIP calls are digital and transmitted over the internet, which means that hackers could eavesdrop on phone calls while sitting on their computers on the other side of the world. All it requires is some easily acquirable software and the technical knowledge to pull it off.

In other words, both systems are vulnerable to eavesdropping and interception by third parties, especially if the ones doing it are the service providers themselves, or government agencies. That said, most experts agree that properly configured VoIP systems are safer than typical landlines, especially when considering that the only way to protect the latter is by securing the company’s building and blocking access to the wires.

4 security measures to address for VoIP security

The security of a VoIP comes down to its implementation. So, it’s crucial that businesses place data safety at the top of the list while setting up their system.

Get a secure voice over ip service provider

With the evolution of the virtual phone system market, it’s no surprise that new providers started popping up like mushrooms. This is great since there’s now a wider range of choices, but it also means that you may find some companies that aren’t as secure as they should be. For this reason, the first thing to do is research and find VoIP providers that offer a broad array of security features and the necessary protocols for your business.

Have a central VoIP administrator

VoIP services offer administrative tools that can be locked away from other users. Centrally managed system administration allows you to implement domain restrictions, and enable multi-factor authentication to the administrative accounts.

The administrator will be able to configure the full VoIP system of the company and by reviewing call records they can identify any unusual traffic and restrict call forwarding to prevent fraudulent behavior.

Protect your own network

Regardless of how secure the provider is, if the business network is not bullet-proof, there’s nothing the VoIP system can do. Having all up to date software, a good firewall, a reliable security suite, and end-to-end encryption are some of the vital parts of a secure network that protects the organization against anyone with bad intentions.

Create security awareness among employees

More often than not, hackers get access to the company’s network due to human error. Falling for a phishing attack, downloading a file infected with a virus, and using easy-to-guess passwords, are just some of the common mistakes that hackers exploit to get unsolicited information access. Training employees in the art of technological security is vital to ensure data stays within the company. Password managers are also an excellent option to help create strong passwords without the need to write them anywhere since everything stays within a safe vault.

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The best VoIP providers for your business

RingCentral

Editor's rating:
Starting price: $20/user/mo
Main features
  • Versatile, advanced call handling features
  • Huge number of integrations
  • Unlimited domestic calls and texts
  • Extensive analytics
  • Versatile, advanced call handling features
  • Huge number of integrations
  • Unlimited domestic calls and texts
  • Extensive analytics
  • Steep learning curve
Summary
View summary

With over 20 years of experience, RingCentral is known for being ahead of the curve, providing a wide range of products, including  online faxing and web conferencing software. RingCentral RingEX offers unlimited domestic calling and text messages, advanced call handling and phone management features, plus desktop and mobile apps to combine everything into one polished VoIP platform. Even better, it comes with a personal AI assistant that is a game-changer for anyone needing to take calls or follow up on clients.

It’s possible to see everything for yourself with the interactive demos, but testing its features is also possible via the 14-day free trial and 30-day money-back guarantee available. To know more about what RingCentral has to offer, we recommend calling the company at +1 (888) 295-1724 for a custom quote.

Special offers
View offers
Up to 33% off RingCentral subscriptions
14-day free trial of RingCentral
30-day money-back guarantee with RingCentral
Full product demo of RingCentral

It may not feature the most straightforward system manager of the market, but RingCentral compensates for that with one of the most comprehensive features’ packs in the industry. It’s possible to get as many phone numbers, phone lines, and extensions as necessary, and the provider offers unlimited domestic calls. RingCentral can be integrated into more than ten different third-party products and can be accessed through the desktop program, browser extension, or mobile app. All of this for the reasonable price of .

Nextiva

Editor's rating:
Starting price: $17.95/user/mo
Main features
  • Comprehensive software
  • Built-in CRM
  • Free team collaboration platform
  • 30-day money-back guarantee
  • Comprehensive software
  • Built-in CRM
  • Free team collaboration platform
  • 30-day money-back guarantee
  • Lack of international numbers
  • Admin console isn't intuitive
  • No free trial
Summary
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As one of the most popular virtual phone systems on the market, Nextiva has stayed on top of the latest trends since its launch in 2008. Consequently, the provider has consistently developed its product over the years to ensure the best possible quality and user experience.

As a result, Nextiva has developed a comprehensive solution with a 99.99% uptime guarantee. Being available on both desktop and mobile, Nextiva goes beyond its duties as a virtual phone system and integrates other advanced features into its software.

In addition to serving as a task management software and team communication solution, the platform also offers AI features designed to enhance business efficiency and user experience.

Even though Nextiva’s prices are a bit high, plans can start at $17.95 per user per month with a yearly subscription and maximum amount of users available. This translates into 30% off the regular rate.

While Nextiva doesn’t offer a free trial, users can still test the platform without risk by taking advantage of its 30-day money-back guarantee. Plus, a free demo of the service is easily accessible on the website.

Special offers
View offers
Up to 30% discount on Nextiva plans
30-day money-back guarantee with Nextiva
Free demo of Nextiva plans

Nextiva is considered by many as one of the best VoIP providers on the market due to its thorough features, reliability, and excellent customer care. It offers all the necessary qualities for efficient call handling and is accessible anywhere through the mobile app. Nextiva can also be integrated with CRM, billing, reporting, and other business applications. Companies can choose from three different subscriptions, but the cheapest tier that costs , already offers more than enough to push any business to the next level.

Grasshopper

Editor's rating:
Starting price: $26/mo
Main features
  • Straightforward account manager
  • User-friendly features
  • Business texting
  • Unlimited domestic calls
  • Straightforward account manager
  • User-friendly features
  • Business texting
  • Unlimited domestic calls
  • Buggy desktop application
  • Lack of international numbers
Summary
View summary

VoIP service Grasshopper considers that its mission is to provide a simple yet perfect phone system to help you stay accessible wherever you are. The service offers all the necessary features of any decent virtual phone system, and with its simple and easy-to-use account manager, everything can be easily customized. Additionally, the iOS and Android apps handily separate business calls and messages from personal ones. All these features, plus such rarities as inbound faxing, are available in three affordable plans. And when you learn about the other advantages, such as your personal virtual receptionist, you’ll be asking yourself why you haven’t already signed up. Grasshopper offers a limited free trial as well, allowing you to try the service without taking any chances.

Special offers
View offers
10% discount for annual billing
50% discount during free trial
$10 for each successful referral
Free 7-day trial with Grasshopper

Grasshopper is an excellent VoIP option that focuses on entrepreneurs. It features a simple and straightforward account manager where everything is easily customizable. Though the simplicity comes at the cost of extra features, Grasshopper offers all the necessary tools to handle calls effectively and without any fuss. The software can be used through Grasshopper’s website, desktop program, or mobile app, and all of the features (as well as three phone extensions) are available from the lowest price point – .


Best VoIP systems of 2025

Editors' choice

RingCentral

Editor's rating:
Versatile, advanced call handling features
Huge number of integrations
Unlimited domestic calls and texts
Extensive analytics
SMS texting

800.com

Editor's rating:
SMS campaigns
Comprehensive array of features
Broad number selection
30-day money-back guarantee
Small businesses

Nextiva

Editor's rating:
Comprehensive software
Built-in CRM
Free team collaboration platform
30-day money-back guarantee
International calling

VoiPLy

Editor's rating:
No contracts
Unlimited minutes
Vast array of features
Live chat
Growing businesses

Talkroute

Editor's rating:
Highly customizable
Multiple device compatibility
Unlimited multi-digit extensions
Extensive reporting
Start-ups

GoTo Connect

Editor's rating:
Unlimited international calling
Extensive phone system management tools
Reliable web conferencing and team messaging
User-friendly
Advanced systems

VirtualPBX

Editor's rating:
Detailed reports
Call recording and monitoring
Wide range of numbers
Message-to-email forwarding

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