What Is VoIP and Why Should Your Business Switch?
What Is VoIP?
VoIP stands for Voice over Internet Protocol — a technology that lets you make and receive phone calls over the internet rather than through traditional copper telephone lines. Instead of relying on the Public Switched Telephone Network (PSTN), VoIP converts your voice into digital data packets and transmits them across your broadband connection.
If you have ever used a service like Microsoft Teams, Zoom or WhatsApp to make a voice call, you have already used a form of VoIP. For businesses, hosted VoIP (sometimes called hosted telephony or cloud phone systems) takes this concept further, providing a full-featured business phone system without the need for on-site telephone equipment.
How Does VoIP Work?
When you speak into a VoIP phone or softphone app, the system performs several steps in real time:
- Voice capture — your microphone picks up analogue sound waves
- Digital conversion — a codec converts the audio into compressed digital packets
- Transmission — packets travel across your internet connection to the hosted platform
- Routing — the VoIP platform routes the call to its destination, whether that is another VoIP user, a mobile or a landline
- Reassembly — at the receiving end, packets are reassembled into clear audio
This entire process happens in milliseconds, delivering HD voice quality that often surpasses traditional phone lines.
VoIP vs the Traditional PSTN
The key difference between VoIP and the PSTN is the underlying infrastructure. Traditional landlines use dedicated copper circuits to carry analogue voice signals. VoIP uses your existing broadband connection to carry digital data. This fundamental difference is what makes business VoIP so much more flexible and cost-effective.
Why Are UK Businesses Switching to VoIP?
There are several compelling reasons why companies across the UK are moving to voice over IP:
1. Significant Cost Savings
VoIP typically costs £8–20 per user per month, compared with £25–35 per line for ISDN or traditional services. Most hosted telephony packages include unlimited UK calls, eliminating unpredictable call charges. Businesses commonly save 30–60% on their phone bills after switching.
2. Powerful Business Features
A hosted VoIP phone system includes features that would cost thousands on a traditional PBX:
- Auto attendant and IVR menus
- Call recording and analytics
- Voicemail to email
- Ring groups and hunt groups
- Mobile and desktop softphone apps
- CRM integration
- Video conferencing
3. Flexibility and Remote Working
With VoIP, your phone system follows your team wherever they work. Staff can take calls on their laptop, mobile or desk phone from home, the office or on the road — all using the same business number. This flexibility has made cloud phone systems essential for modern hybrid working.
4. Easy Scalability
Adding or removing users takes minutes rather than weeks. There is no need to wait for an engineer to install new lines. Whether you are hiring seasonal staff or opening a new office, your phone system scales instantly.
5. The 2027 PSTN Switch-Off
BT Openreach is switching off the PSTN and ISDN networks by 2027. Every business currently using traditional phone lines will need to move to an IP-based alternative. Switching to VoIP now means you are future-proofed and can make the transition on your own terms rather than being forced into a last-minute migration.
What Does VoIP Stand For in Practice?
Beyond the technical meaning of Voice over Internet Protocol, VoIP in a business context means having a modern, professional phone system that grows with your company. It means your receptionist can transfer calls seamlessly, your sales team can see who is available before transferring, and your customers hear a professional greeting — all without expensive on-premise hardware.
Is VoIP Right for Your Business?
If your business makes and receives phone calls — and most do — then VoIP is almost certainly a better option than what you have today. You need a reliable broadband connection (we recommend fibre), and that is essentially it. The hosted platform runs in the cloud, so there is no hardware to maintain on site beyond your handsets.
As an independent telecoms provider, Connection Technologies can help you assess your current setup and recommend the right hosted telephony solution for your needs and budget.
Ready to explore VoIP for your business? Get a free quote or browse our VoIP getting started guides to learn more.
