Types of Business Phone Lines in 2026
Choosing the right business phone line has never been more important or more complex. With the UK telecommunications landscape undergoing a major transformation, understanding your options is essential. Here are the main types of business phone lines available in 2026:
Traditional Landlines (PSTN/ISDN)
Traditional analogue phone lines have served UK businesses for decades. They use the Public Switched Telephone Network (PSTN) and ISDN (Integrated Services Digital Network) infrastructure to deliver reliable voice calls over copper wiring. However, these services are being phased out ahead of the 2027 switch-off, making them a poor choice for any new installation. If your business still relies on traditional lines, now is the time to plan your migration.
VoIP (Voice over Internet Protocol)
VoIP is the dominant technology for business phone lines in 2026. It routes calls over your broadband connection rather than dedicated phone lines, offering significant cost savings and far greater flexibility. Hosted VoIP (also called cloud phone systems) means all the infrastructure is managed by your provider. You simply plug in your handsets or use a softphone app. Connection Technologies offers HyperCloud Hosted VoIP, a feature-rich cloud phone system designed specifically for UK businesses.
SIP Trunking
SIP (Session Initiation Protocol) trunking is ideal for businesses that already have an on-premises PBX system. Rather than replacing your existing phone system, SIP trunks connect it to the internet, replacing traditional ISDN lines. This gives you the cost benefits of VoIP while preserving your existing hardware investment. SIP trunking is particularly popular with medium to large businesses that have already invested in PBX infrastructure.
Mobile-Only Solutions
For small businesses, freelancers, and remote teams, a mobile-only approach is increasingly viable. Modern business mobile plans include features like virtual landline numbers, call forwarding, and voicemail-to-email that were once exclusive to fixed-line systems. Combined with apps like Microsoft Teams or dedicated business phone apps, a mobile-only setup can provide everything a small business needs.
The 2027 PSTN Switch-Off: What It Means for Your Business Phone Line
The single biggest change affecting business phone lines in the UK is the planned PSTN switch-off, scheduled for completion by January 2027. Here is what you need to know:
What Is Happening?
BT Openreach is retiring the traditional copper-based telephone network that has underpinned UK communications for over a century. All analogue phone lines (PSTN) and ISDN services will cease to function. Every business currently using these services must migrate to an IP-based alternative, typically VoIP or SIP trunking.
Why Is It Happening?
The copper network is ageing, expensive to maintain, and limited in capability. IP-based systems offer better call quality, more features, greater reliability, and lower operating costs. The switch-off is part of a broader move to a fully digital telecommunications infrastructure across the UK.
What Should Your Business Do?
- Audit your current phone setup to identify all lines, numbers, and services that rely on PSTN or ISDN.
- Plan your migration early rather than waiting until the last minute. Migrating now gives you time to test and optimise your new system.
- Choose a reliable VoIP provider with strong UK support, guaranteed uptime, and experience migrating businesses from traditional lines.
- Consider your broadband because VoIP relies on your internet connection. Ensure you have sufficient bandwidth and consider a dedicated line or backup connection for critical communications.
- Port your existing numbers as most providers can transfer your existing phone numbers to the new system, so your customers will not notice any change.
Connection Technologies has helped hundreds of UK businesses navigate the PSTN switch-off. Get a free VoIP migration quote to find out how straightforward the transition can be.
Best Business Phone Line Providers in the UK
The UK market has a wide range of business phone line providers, each with different strengths. Here is an overview of the major players and what they offer:
BT Business
As the largest telecoms provider in the UK, BT Business offers a comprehensive range of phone line solutions including VoIP, SIP trunking, and cloud phone systems. They have extensive network coverage and strong brand recognition. However, BT pricing tends to be higher than competitors, and smaller businesses sometimes report that support can be slow.
Virgin Media Business
Virgin Media provides business phone lines alongside their broadband services, making them a good option for bundled packages. Their network is cable-based rather than relying on Openreach, which can mean faster speeds in areas with Virgin coverage. The downside is limited geographic availability as their network does not cover all of the UK.
Vodafone Business
Vodafone offers both fixed-line and mobile business solutions, with strong unified communications packages that combine phone lines, broadband, and mobile. Their One Net Business product integrates fixed and mobile into a single system. Vodafone is particularly strong for businesses that need mobile and fixed-line integration.
8×8
A specialist in cloud communications, 8×8 provides hosted VoIP and unified communications platforms. They are popular with businesses that want advanced features like video conferencing, team messaging, and contact centre capabilities in a single platform. Pricing can be complex, and they are better suited to businesses with 10 or more users.
RingCentral
Another cloud-first provider, RingCentral offers a feature-rich phone system with excellent integration capabilities. They work well with businesses that use tools like Microsoft 365, Salesforce, and other cloud applications. Their platform is powerful but can be overkill for very small businesses.
Connection Technologies: Independent Comparison
Rather than being tied to a single provider, Connection Technologies compares business phone line solutions from across the market to find the best fit for your specific needs. Whether you need a simple two-line VoIP setup or a complex multi-site phone system, we provide impartial advice and access to exclusive deals. Get a free comparison quote to see how much you could save.
VoIP vs Traditional Phone Lines for Business
With the PSTN switch-off approaching, many businesses are weighing up VoIP against their existing traditional phone lines. Here is a detailed comparison:
Cost
VoIP is significantly cheaper than traditional phone lines. There is no need for dedicated copper wiring, call charges are lower (especially for international calls), and many providers offer unlimited UK calling as standard. A typical VoIP line costs between eight and fifteen pounds per user per month, compared to twenty to thirty pounds or more for a traditional business line plus call charges.
Features
Traditional phone lines offer basic calling, voicemail, and caller ID. VoIP systems include all of that plus auto-attendants, call queuing, call recording, voicemail-to-email, video conferencing, mobile apps, CRM integration, real-time analytics, and much more, often at no extra cost.
Reliability
Traditional lines have historically been seen as more reliable because they do not depend on broadband. However, modern VoIP systems with proper internet connectivity are extremely reliable. Many providers offer 99.99% uptime guarantees, and features like automatic failover to mobile ensure calls are never missed.
Flexibility
VoIP wins decisively on flexibility. Adding or removing lines takes minutes rather than weeks. Employees can make and receive calls from anywhere using softphone apps on their laptops or mobiles. This makes VoIP ideal for hybrid and remote working, something traditional lines simply cannot match.
Scalability
Growing businesses benefit enormously from VoIP. Adding new users requires no physical installation. Just provision a new account and plug in a handset or install the app. Traditional lines require Openreach engineer visits, new wiring, and longer lead times.
Call Quality
With a good broadband connection, VoIP call quality matches or exceeds traditional lines. HD voice codecs deliver clearer audio than analogue lines. The key requirement is sufficient bandwidth, typically 100kbps per concurrent call, which is easily achievable on modern business broadband.
How to Choose a Business Phone Line Provider
With so many options available, selecting the right provider requires careful consideration. Use this checklist to evaluate your options:
1. Assess Your Needs
- How many phone lines or extensions do you need?
- Do you need advanced features like call recording, auto-attendant, or CRM integration?
- Will employees need to make calls from outside the office?
- Do you handle high call volumes or need a contact centre solution?
- Are you a single-site or multi-site business?
2. Check Reliability and Uptime
- Does the provider offer an uptime SLA (Service Level Agreement)?
- What redundancy measures are in place?
- Is there automatic failover to mobile or alternative routing?
- Where are their data centres located?
3. Evaluate Total Cost
- What is the per-user or per-line monthly cost?
- Are there setup fees, hardware costs, or hidden charges?
- What is included in the base price versus what costs extra?
- Are call charges included or billed separately?
- What are the contract terms and exit fees?
4. Consider Support Quality
- Is support UK-based?
- What are the support hours: 24/7 or business hours only?
- How quickly do they respond to faults?
- Do they provide a dedicated account manager?
5. Think About Scalability
- How easy is it to add or remove lines?
- Can the system grow with your business?
- Are there different tiers or packages for different business sizes?
If evaluating providers feels overwhelming, Connection Technologies can do the comparison for you. We assess your requirements and match you with the best provider, saving you time and money. Request your free comparison quote.
Business Phone Line Costs in 2026
Understanding typical pricing helps you budget effectively and spot good deals. Here is what you can expect to pay for different business phone line solutions in 2026:
VoIP and Hosted Phone Systems
- Per user per month: Eight to twenty pounds depending on features and provider
- Setup fees: Often waived on 12 to 36 month contracts
- Handsets: Fifty to two hundred and fifty pounds per desk phone (or free with some contracts); softphone apps are typically free
- Call charges: Usually included (unlimited UK landline and mobile) or very low per-minute rates
SIP Trunking
- Per channel per month: Four to ten pounds
- Setup fees: Fifty to one hundred and fifty pounds one-off
- Call charges: Typically one to two pence per minute for UK calls, or bundled minutes packages
- Requires: Existing compatible PBX system and broadband connection
Mobile-Only Solutions
- Per line per month: Ten to forty pounds depending on data and handset
- Handsets: Often included on 24-month contracts
- Virtual landline number: Three to eight pounds per month add-on
- Best for: Sole traders, micro-businesses, and remote workers
Bundled Phone and Broadband
- Monthly cost: Twenty-five to sixty pounds for broadband plus phone line
- Includes: Business broadband, VoIP line(s), and often inclusive calls
- Best for: Small businesses wanting a simple, all-in-one package
Explore business phone and broadband bundles from Connection Technologies for the latest deals.
Combining Phone Lines with Broadband and Mobile
One of the smartest moves for UK businesses in 2026 is bundling your phone lines, broadband, and mobile contracts together. Here is why:
Cost Savings
Bundled packages are almost always cheaper than buying each service separately. Providers offer discounts for multi-service contracts, and you benefit from a single bill and single point of contact for support. Savings of 15 to 30 percent compared to separate contracts are common.
Simplified Management
Managing multiple telecoms providers is time-consuming. A bundled approach means one provider, one bill, one support number. If something goes wrong, there is no finger-pointing between providers. One company is responsible for everything.
Better Integration
When your phone system, broadband, and mobiles come from the same ecosystem, they work together more seamlessly. Features like fixed-mobile convergence (receiving office calls on your mobile), unified voicemail, and single-number reach become straightforward to implement.
Future-Proofing
Bundled packages from forward-thinking providers are designed with the post-PSTN landscape in mind. Everything runs over IP, so you are already prepared for the 2027 switch-off and beyond.
Connection Technologies specialises in finding the best bundled deals for UK businesses. Whether you need business broadband, business mobiles, or a complete hosted VoIP phone system, we compare the market to find your ideal package. Get a free bundled quote today.
How Connection Technologies Helps Businesses Choose the Right Phone System
Navigating the business phone line market can be daunting. With dozens of providers, hundreds of tariffs, and rapidly changing technology, making the right choice requires expertise. That is where Connection Technologies comes in.
Independent, Impartial Advice
We are not tied to any single network or provider. This means our recommendations are based entirely on what is best for your business, not on commission targets or provider partnerships. We compare solutions from across the market to find the right fit.
Tailored Recommendations
Every business is different. A five-person accountancy firm has very different phone needs to a 50-seat call centre or a construction company with mobile workers. We take the time to understand your specific requirements before making any recommendations.
End-to-End Support
From initial consultation through to installation, number porting, and ongoing support, Connection Technologies manages the entire process. We handle the technical details so you can focus on running your business.
Cost Optimisation
We regularly review our clients telecoms spending to ensure they are still on the best available deal. Markets change, new products launch, and contracts expire. We keep on top of it all so you do not have to.
PSTN Migration Expertise
With the 2027 switch-off approaching, we have helped hundreds of businesses migrate from traditional phone lines to modern VoIP and cloud phone systems. We know the pitfalls, the best migration paths, and how to ensure zero disruption to your business.
FAQs
How much does a business phone line cost per month?
A basic VoIP business phone line costs from around eight pounds per user per month, with more feature-rich plans ranging from twelve to twenty pounds. Traditional lines (where still available) cost twenty to thirty pounds or more per month. The best value typically comes from hosted VoIP systems with inclusive UK calls.
Can I keep my existing phone number if I switch providers?
Yes. Number porting allows you to transfer your existing business phone numbers to a new provider. The process usually takes 5 to 10 working days, and there should be no downtime if managed correctly. Connection Technologies handles number porting as part of our migration service.
What broadband speed do I need for VoIP?
Each concurrent VoIP call requires approximately 100kbps of bandwidth. For a small office with 5 simultaneous calls, you would need at least 1Mbps dedicated to voice, which is easily achievable on any modern business broadband connection. For larger deployments, we recommend a dedicated internet connection or Quality of Service (QoS) configuration to prioritise voice traffic.
Do I need special phones for VoIP?
You need IP phones (also called SIP phones) or softphone applications. IP desk phones start from around fifty pounds and connect directly to your network. Alternatively, softphone apps run on your computer or smartphone at no additional hardware cost. Many businesses use a mix of both.
What happens to my phone line during a broadband outage?
Good VoIP providers offer failover options. If your broadband goes down, calls can automatically redirect to mobile phones, an alternative site, or a voicemail system. Some providers also offer 4G/5G backup connections to keep your phones running during outages. Discuss failover options with your provider during setup.
Get a Free Business Phone Line Quote
Whether you are setting up a new business phone system, migrating from traditional lines ahead of the 2027 switch-off, or simply looking for a better deal, Connection Technologies is here to help.
- Free, no-obligation comparison quotes from leading UK providers
- Expert advice on VoIP, SIP trunking, and cloud phone systems
- Support with number porting and seamless migration
- Bundled deals combining phone lines, broadband, and mobile
- Ongoing account management to keep your costs optimised
Get your free hosted VoIP quote or request a general business telecoms quote today. You can also explore our business mobile deals and business broadband packages to find the complete solution for your business.