One way or another, most businesses need to communicate with their customers or suppliers. If your business is office-based, a business phone line will provide a high-quality, reliable way to connect your business with the wider world.
The technology used for business phone lines in the UK is changing rapidly – in this guide, we’ll explore how to choose a phone line system for your company.
Key sections for you to explore:
Choosing a business phone line
Upgrading your business phone line
The analogue phone line switch off
What is a business phone line?
A business phone line is a telephone system directly connected to a series of copper cables running away from your commercial property. The phone lines connect to the Openreach telephone line cables, cabinets, and exchanges that form the British phone line infrastructure.
A landline allows your business to make and receive calls from other phone numbers across the country and the world.
A business phone line relies on a fixed connection with the highly reliable phone line infrastructure that has existed since the early 1900s. Business phone lines are gradually being replaced by:
- VoIP phone systems that connect to the fibre broadband network.
- Mobile phones that connect wirelessly to mobile network providers.
In 2025, Openreach will switch off the British analogue phone line network (the big switch off), meaning that business phone lines will no longer be an option. See more on this below.
Choosing a business phone line
Here are the key questions to answer when choosing a phone line for your business:
- Can employee mobile phones provide a better, more flexible alternative?
- Is the speed of your internet sufficient to upgrade to a VoIP system?
If the answer to both of these questions is no, then a traditional business telephone line could still be the right solution for your business.
A traditional business telephone system will only be a short-term solution. Openreach aims to complete its exercise of ‘switching off’ the copper cable network that supports phone lines by December 2025.
What are the benefits of using a business phone line?
Despite the impending switch-off, there are a few reasons many businesses still rely on a business phone line:
- Reliability – A business phone line is highly reliable using the public switched telephone network (PTSN) to transmit calls. A business phone line will reliably keep your business connected to your customers.
- Superior quality in poor internet connections – VoIP phone systems depend entirely on broadband internet, which can vary in speed throughout the day. A business phone line will provide consistent, high-quality calls.
- A traditional corded phone will work even during a power cut – If your business is in an area without a mobile signal, you’ll rely on a fixed phone line. A business analogue phone line will work without electricity, making it more useful than a VoIP system in a power cut.
Upgrading your business phone line
In 2024, VoIP (Voice over Internet Protocol) stands out as the optimal business phone line choice in the UK, offering flexibility, scalability, and cost savings.
Unlike traditional phone lines relying on copper wires and physical infrastructure, VoIP utilises the internet for voice communication, making it an inherently more adaptable and modern solution.
Here are the key advantages of a VoIP phone line:
- Cost reduction: Lower monthly rates, no line rental fees, and cheaper international calls compared to traditional phone lines.
- Scalability: Easy to add or remove lines without physical installations, ideal for growing businesses.
- Flexibility: Offers remote operation capabilities, allowing employees to make and receive calls from anywhere with an internet connection.
- Advanced features: Includes functionalities like call forwarding, voicemail-to-email, and conference calling, often at no extra cost.
- Integration with other tools: VoIP phone lines allow integrations with business tools like CRM systems, enhancing workflow efficiency.
- High-Quality Voice Calls: With a good internet connection, VoIP can offer superior call quality compared to traditional phone line
Broadband speed requirements for VoIP
To make an upgrade to a VoIP phone system for your business, it’s necessary to have a fast and reliable broadband connection.
With the current state of British broadband infrastructure, this means using one of the following broadband connection types:
- GFast Broadband
- Fibre Broadband
- Full-Fibre Broadband
- Cable Broadband
- 5G Business Broadband
- Leased Line Broadband
- Starlink
Our business broadband experts are here to help you upgrade your broadband. Visit our business broadband deals page today.
💡Test the current speed of your connection with our broadband speed test.
Explore your VoIP options with Business Broadband Hub
If you’ve decided that VoIP offers the best phone line solution for your business, then it’s time to choose your service and provider.
VoIP phone systems offer a vast range of useful features and other options. To help decide and find the cheapest option, check out our full guide to VoIP phone systems.
List of business phone line providers
Here’s a list of the Ofcom licenced phone line providers in the UK. Please note that in preparation for the big switch off most of these providers are no longer accepting new phone line customers.
They are, however, still able to help with existing business phone line customers.
It’s worth noting that some business phone line providers market themselves as separate companies but act as alternative brands of the above providers.