Last Updated on October 29, 2025
Voice over Internet Protocol, or VoIP, is a technology that allows voice communication through an Internet connection instead of traditional copper phone lines.
It converts your voice into digital signals and sends them over the Internet.
This method quickly replaces landline systems as more businesses and households seek cost-effective, flexible, and scalable alternatives to traditional telephony.
The UK’s existing analogue phone network is being permanently retired by 2027.
This means all landline services will eventually operate using digital infrastructure.
Anyone still using the Public Switched Telephone Network (PSTN) must transition to a VoIP-based solution to maintain phone service.
Air Landline helps make this shift easier.
Whether for personal or business needs, their service allows users to keep their existing number, access advanced features, and stay connected through any internet-enabled device.
These VoIP examples will also showcase how different industries, including the real estate sector, benefit from adopting modern phone solutions.
Different Examples of VoIP Systems
VoIP systems can be deployed in several ways, depending on the user’s needs. Each system serves a different purpose and user base, from office setups to mobile applications.
Businesses, especially those in the real estate and services sectors, rely on these setups to improve customer communications.
Below are four practical VoIP examples of how the technology is used in real environments.
Example 1: VoIP Desk Phones for Offices
VoIP desk phones are commonly used in call centres, corporate offices, and customer service departments. These phones resemble traditional landline handsets but operate over the Internet.
They’re connected through Ethernet cables or WiFi and work with VoIP software to route calls digitally.
Businesses often choose this setup for its reliability, better control over call routing, and advanced features such as voicemail-to-email, call transfer, and hold music.
VoIP desk phones support scalability, allowing companies to add or remove users without needing to rewire their infrastructure.
Example 2: Mobile VoIP Apps
VoIP isn’t limited to desktop setups. Mobile apps like WhatsApp and Skype offer VoIP calling directly from smartphones using mobile data or WiFi.
These apps are widely used for both personal and professional communication.
Calls made through them bypass mobile networks entirely, making them especially useful for international or long-distance calls without incurring additional charges.
Users can make voice or video calls, send messages, and even host group calls. Many apps also support SMS-style messaging, offering users another channel for communication.
They are easy to set up and often free, which makes them a go-to option for many.
Example 3: VoIP via Web Browsers
Web-based VoIP is often integrated into customer relationship management systems (CRMs), live chat platforms, and online support desks.
Users can make or receive calls directly through a browser window without additional software or hardware. This is especially useful for remote teams and customer service representatives who rely on online platforms to manage communications.
It also allows easy access to call history, recording, and real-time analytics.
These platforms also support conversational interfaces, enabling customers to engage with businesses quickly and effectively while providing seamless transitions between chat and voice channels.
Example 4: VoIP for Home Phone Replacement
VoIP adapters can connect traditional handsets to broadband for individuals who want to retain a home phone setup.
These systems function like standard landlines but route calls digitally, often at lower costs. They are ideal for households during the transition to digital landlines by 2027.
Different Types of VoIP Communication
VoIP technology can be implemented in various ways depending on the organisation’s size, technical requirements, and budget.
Each type of VoIP setup offers different levels of flexibility, control, and cost-efficiency. Below are five of the most common types of VoIP communication.
Type 1: Hosted VoIP Services
Hosted VoIP is a fully managed service provided by a third-party vendor. The provider handles all infrastructure, including services and maintenance.
Users only need an internet connection and compatible devices. This type is ideal for small to medium-sized businesses that want to avoid the complexity of managing their phone systems.
It usually comes with features such as automated call routing, voicemail, and conference calling.
Type 2: SIP Trunking
SIP (Session Initiation Protocol) trunking allows businesses to use VoIP with their existing PBX (Private Branch Exchange) hardware.
Instead of using traditional phone lines, calls are routed through the Internet.
This method is best suited for companies with phone systems in place that want to modernise without starting from scratch. It reduces ongoing costs while retaining control over internal infrastructure.
Type 3: VoIP Softphones
Softphones are software-based phones that run on computers, tablets, or smartphones.
They replicate the functionality of a traditional phone and can make or receive calls using a headset and microphone. Softphones are ideal for remote teams and customer service agents who work from different locations.
They also integrate easily with VoIP software and CRM systems, providing businesses with a complete phone system solution embedded within existing platforms.
This setup is particularly valuable for businesses that offer flexible, location-independent communication for employees and customers.
Type 4: Cloud-based VoIP Platforms
Cloud VoIP systems store all communication tools in online environments rather than on local servers. These platforms support video calls, call recording, and real-time analytics.
They’re beneficial for distributed teams that require flexibility and fast deployment, and reduce the need for in-house IT support.
Type 5: On-Premise VoIP Systems
On-premise systems involve setting up and managing VoIP infrastructure within a company’s physical location.
This option offers greater control and data privacy, making it suitable for organisations with strict compliance requirements or limited internet reliability.
However, it requires a larger upfront investment and ongoing maintenance. Many IT teams prefer this approach as it allows direct oversight of the entire phone system, ensuring that sensitive data and calls remain within the organisation’s secure infrastructure.
VoIP Examples in Real Life
Businesses and individuals use VoIP technology in practical, everyday situations.
VoIP examples show how the technology offers flexibility, cost savings, and access to modern communication devices for work or personal use.
Business Communication
Companies use VoIP to handle internal calls, manage customer service, and connect with clients. Sales teams rely on it for outreach, while remote staff use it to contact colleagues across locations.
Meetings can take place through audio or video, often with screen-sharing and call recording features included.
Air Landline provides a business VoIP service designed for UK businesses that need reliable voice solutions without the cost or limitations of traditional landlines.
Their offering includes features like call forwarding, IVR menus, and voicemail-to-email. With a focus on simple setup and number portability, Air Landline supports both small offices and large teams.
In the e-commerce sector, VoIP supports real-time conversations, ensuring businesses can assist customers promptly and efficiently, improving the overall calling experience.
Personal Communication
VoIP also works well for personal use. Families use apps like WhatsApp or Viber to speak with relatives abroad without incurring extra charges.
Students studying overseas rely on VoIP for free or low-cost calls back home. These services operate over WiFi or mobile data and don’t require special hardware.
Calls can be made from phones, tablets, or laptops. This makes communication accessible and affordable for people in different parts of the world.
The experience for users is straightforward, often requiring only an app download to stay connected.
VoIP Phones
Some users prefer a phone that looks and works like a landline. VoIP phones are devices that connect directly to a router or modem. They don’t need phone jacks or copper wiring.
These are commonly used in homes and offices, and they support features such as call waiting, hold, transfer, and caller ID.
The calling experience with these phones closely matches traditional devices, offering a familiar interface with the added benefits of digital flexibility.
Hotspots
VoIP can be used in remote areas with limited infrastructure through WiFi hotspots.
This is useful for field workers, rural households, and temporary job sites. With internet access, users can make calls using VoIP apps or devices, allowing communication without relying on mobile signal strength or fixed lines.
These connections are often powered by portable hotspot devices, giving users dependable voice service even in challenging locations.
Leading VoIP Providers
VoIP services come in different forms, from business-focused platforms to everyday apps.
While many offer similar features, some stand out regarding usability, support, and regional focus. Below are examples of key providers currently offering VoIP communication services.
Air Landline
Air Landline is a UK-based VoIP provider offering phone services that connect online instead of traditional landlines.
Designed for small and professional businesses, it enables users to choose a virtual number or port their existing one.
The setup is simple and requires no physical installation. Once active, the service works on mobile phones, tablets, and computers.
Advantages of Using VoIP with Air Landline
- Call forwarding
- Voicemail-to-email
- Number porting
- Localised Numbers
- Missed call alerts
- Customised greetings
- Caller ID control
- Multi-device support
- Automated call routing
- Works without a landline or SIM
Skype
Skype, once a widely used VoIP application, is being phased out. Microsoft is directing users toward its other services, like Microsoft Teams.
For those using Skype numbers or relying on it for business or personal calls, Air Landline offers the option to port your existing numbers, ensuring continuity without downtime or lost contacts.
UPDATE: As of May 2025, Skype has retired. If you want to port your existing number from Skype to Air Landline, you can do so by clicking here.
WhatsApp supports peer-to-peer VoIP calls through WiFi or mobile data. It is most used for casual, personal communication and is not intended for business-level phone systems.
It lacks features like call queuing or integration with CRM tools.
Grasshopper
Grasshopper offers VoIP services tailored to startups and small businesses. It includes features like virtual receptionists, voicemail transcription, and call handling through mobile devices.
Viber
Viber provided encrypted voice and video calling with additional chat functionality.
It’s popular among users needing secure peer-to-peer communication.
Microsoft Teams
Microsoft Teams supports VoIP calls as part of its wider collaboration tools.
It’s designed for internal communication within medium to large organisations.
Google Voice
Google Voice offers free calling within the US and low-cost international rates. It’s suitable for personal use, freelancers and small to large businesses.
Mitel
Mitel provided advanced VoIP solutions for enterprises, including on-premise and hybrid systems, suited to larger companies with specific infrastructure needs.
Why would someone use a VoIP number?
A VoIP number allows users to make and receive calls from any internet-connected device without being tied to a specific location.
This makes it useful for remote workers, businesses with mobile teams, or anyone wanting to manage calls from a phone, laptop, or tablet.
It also reduces costs compared to traditional landlines, especially for long-distance or international calls.
For businesses, VoIP numbers support features like automated call routing, voicemail-to-email, and caller ID control.
These tools help manage communication more effectively while maintaining a professional image.
VoIP numbers are also scalable, making them suitable for growing businesses that need to add or reassign numbers quickly.
Air Landline allows users to port their existing landline number to a VoIP service or choose a new one with local area codes.
This flexibility makes VoIP a practical solution for individuals and companies looking for a reliable, modern phone system.
Retail and real estate companies use VoIP numbers to keep communication agile while providing a consistent conversational experience for clients.
Integrated with AI tools, VoIP services can also enhance reporting and improve call handling workflows.
Go to Business VoIP Uses
Modern VoIP systems provide a lot more than just voice calls. Businesses use them to improve communication, monitor performance, and streamline customer interactions.
Air Landline includes all the key features for day-to-day operations, with tools supporting customer service and internal teams.
Call Recording
This feature captures calls for later review. Teams use it to monitor quality, train staff, and meet compliance standards.
Recordings can be stored securely and accessed as needed.
Call Whisper
Call whisper is an advanced call feature that allows for a message to be played to the recipient before the call is answered.
It’s helpful for training, support, and improving customer service in real time.
Voicemail-to-Email
When calls are missed, voicemail messages are sent directly to email inboxes.
This makes it easier to track and respond without logging into a separate system. It’s useful for teams on the move.
Virtual Switchboard
Virtual switchboard systems help route calls automatically based on customer input.
Callers can choose from options like “press 1 for sales” or “press 2 for support,” reducing wait times and helping staff stay focused on their roles.
Customers can also follow voice prompts to reach the correct department, improving the call flow and ensuring no inquiries are missed.
Analytics and Reporting
Air Landline provides detailed call data to track performance. Businesses can view metrics such as call volumes, response times, and missed call rates.
These insights help improve workflows and decision-making. AI-driven analytics also support businesses by automatically identifying patterns in call data, assisting teams to adjust how they engage with customers, and enhancing agent response times.
This data helps call centre supervisors identify service gaps, ensuring centre agents can adjust scripts, improve processes, and provide a better centre experience to those calling in.
Do I need any special VoIP equipment to use VoIP?
No special equipment is required to start using VoIP. Most users can make and receive calls using their own devices, like smartphones, tablets, or computers.
All that is needed is a stable internet connection and access to VoIP software or a service provider like Air Landline.
For those who prefer a more traditional setup, VoIP desk phones are available and connect directly to routers using Ethernet or WiFi.
These phones look like standard landline devices but operate over the Internet and often include advanced features such as call transfer, speakerphone, and hold functions.
Some users may use an adapter to connect their existing analogue phones to their broadband line.
This can be a good option for those transitioning from PSTN to digital services ahead of the 2027 switch-off.
Air Landline makes starting easy, regardless of the setup, without requiring major technical changes or installations.
How to get started with Air Landline’s 7-Day VoIP trial
Getting started with Air Landline is simple and doesn’t require technical knowledge or special equipment.
The process is entirely online and takes just a few steps to complete.
Step 1: Pick Your Area Code
Choose the area code that best suits your business.
Whether you want to appear local or nationwide, we offer full UK coverage, so you can select a landline number from any city or region.
Step 2: Connect your mobile number and email address
Let us know which mobile number you’d like your new landline to forward calls to, as well as your email address.
Step 3: That’s it, you’re ready to get started!
In the next few minutes, you’ll receive an email with your brand-new virtual landline number!
Different types of companies that use VoIP
VoIP technology supports a wide range of industries.
Its flexibility, lower operating costs, and advanced features make it a practical choice for companies that need reliable communication without the complexity of traditional phone systems.
Call Centres
VoIP is well-suited for call centres because it can manage high volumes of calls and route them efficiently.
Features like automated call routing, call whisper, and analytics help supervisors monitor performance and improve customer service.
Air Landline offers tools that support agents across multiple locations without needing fixed lines.
With VoIP, a call centre can operate seamlessly across regions, ensuring every centre agent can access key data, including live call analytics and recording tools.
VoIP also allows centre managers to monitor live calls using features like call whisper, giving them real-time insight into customer interactions.
Real Estate Agents
Agents often work remotely or travel between properties.
A VoIP phone allows them to take calls from any device, ensuring they stay available to clients.
Voicemail-to-email and call forwarding features are particularly helpful for handling inquiries while on the move.
Real estate companies benefit from VoIP’s ability to streamline communications across teams working in various locations.
VoIP systems also help real estate agents manage multiple listings and client calls efficiently, without missing leads or follow-ups.
Franchises
Franchises with multiple branches benefit from centralised phone systems.
VoIP makes managing communication across all locations easier while keeping costs constant.
Consultants and Freelancers
Freelancers and consultants often work from home or shared offices. A VoIP setup allows them to separate personal and business calls using a single device.
It also helps present a professional image with a dedicated business number.
Retail or Local Shops
Small shops use VoIP to handle customer calls, delivery inquiries, and supplier coordination.
It’s a low-cost alternative to landlines, allowing staff to receive calls on mobile phones even when away from the counter.
Frequently Asked Questions
Optional VoIP desk phones or adapters are available for traditional handset use.
Air Landline allows number porting for a smooth transition.
That’s it! You’ll receive an email in the next couple of minutes with your brand new virtual landline number!
New users on Air Landline can access a 7-day trial to test out our service with no commitment.
Air Landline supports number porting for most UK landline numbers.
Poor connectivity may affect call clarity, but a stable connection resolves the issue immediately.
Summary – VoIP examples
VoIP makes calling more flexible and affordable for both businesses and individuals.
With solutions like Air Landline, users can move away from traditional phone lines while keeping their number and gaining access to valuable features.
It works across multiple devices, requires no physical landline, and supports easy setup. The 2027 switch-off makes this the right time to act.