FREE GUIDE — PLAIN ENGLISH — UK SMALL BUSINESS FOCUS
Business Connectivity Guides
Whether you run a small business from an office, a shop, or your spare bedroom — reliable, cost-effective connectivity is the foundation everything else depends on. These free guides cover business broadband, VoIP phone systems, remote working, and preparing for the UK landline switch-off — in plain English, with no jargon and no sales pressure.
Who Are These Guides For?
Business connectivity needs are different from residential ones — but that does not mean they are more complicated. These guides are written for small business owners, sole traders, and home workers who need reliable connectivity advice without the enterprise jargon.
Small Business Owners
Running a business from an office, shop, or commercial premises with 1–20 staff and needing reliable broadband, a professional phone system, and preparation for the landline switch-off.
Sole Traders & Freelancers
Working independently from home or a small workspace, needing a professional phone presence, reliable video call capability, and a broadband connection that can handle client work without interruption.
Home Workers
Employed full or part-time from home and needing to ensure your home broadband, Wi-Fi, and connectivity setup is up to the demands of professional video calls, VPN access, and remote collaboration tools.
Businesses Facing the Switch-Off
Any business still using traditional copper phone lines — including ISDN lines, analogue handsets, fax machines, or card payment terminals connected to a phone line — that needs to understand what the UK landline switch-off means and what action to take.
What These Guides Cover
Choosing the right business broadband type and speed for your needs
VoIP and cloud phone systems for small businesses
Preparing your business for the UK landline switch-off
Setting up reliable connectivity for remote and hybrid working
Understanding business broadband SLAs and why they matter
Number porting, call handling, and keeping your business number
BUSINESS BROADBAND
Choosing the Right Broadband for Your Business
Business broadband is not simply residential broadband with a higher price tag. There are meaningful differences in reliability, support, speed guarantees, and contract terms that matter significantly when your livelihood depends on staying connected. Here is what you need to know.
Which Type of Business Broadband Do You Need?
FTTC
Part Fibre
30–80Mbps
Business FTTC
Part-fibre broadband on a business contract — the same underlying technology as residential FTTC but with a lower contention ratio, priority fault resolution, and a static IP address option. A cost-effective starting point for small businesses with modest bandwidth needs and no heavy upload requirements.
Best for: Small offices with up to 5 users doing general browsing, email, and light video calling.
FTTP
Full Fibre
100Mbps–1Gbps+
Business Full Fibre
Full fibre on a business contract delivers consistent high speeds with much better upload performance than FTTC — critical for cloud-based working, video conferencing, VoIP, and large file transfers. Availability is expanding rapidly across the UK and pricing has become increasingly competitive. The recommended choice for any business that can access it.
Best for: Businesses of any size where multiple users need reliable simultaneous connectivity, video calls, and cloud tools.
EFM
Ethernet
10–35Mbps
EFM — Ethernet in the First Mile
A bonded copper business connection that delivers symmetric upload and download speeds with a strong SLA and guaranteed uptime. EFM is more expensive than FTTC but cheaper than a full leased line and sits between the two in terms of performance and reliability. Increasingly being replaced by business FTTP where available — but still relevant in areas where full fibre has not yet reached.
Best for: Businesses needing guaranteed symmetric speeds and strong SLA but where full fibre is not yet available.
Leased
Line
100Mbps–10Gbps
Leased Line
A dedicated, uncontended fibre circuit connecting your premises directly to the internet — not shared with any other users. Leased lines provide guaranteed symmetric speeds with the highest available SLA and are the gold standard for business connectivity. Installation costs and monthly fees are significantly higher than broadband products and are typically justified for businesses with 20+ users or mission-critical connectivity requirements.
Best for: Larger businesses, data-intensive operations, businesses where any downtime has significant financial consequences.
4G/5G
Backup
Variable
4G/5G Mobile Backup Connection
A mobile data connection — either via a 4G/5G router or a mobile hotspot — used as a failover when your primary broadband connection goes down. For businesses where downtime is costly, a mobile backup connection that automatically kicks in during an outage can be invaluable. Many business-grade routers now support dual-WAN with automatic failover built in.
Best for: Any business where internet downtime directly impacts revenue or operations — as a secondary connection only.
VOIP PHONE SYSTEMS FOR BUSINESS
Business Phone Systems & the Landline Switch-Off
The UK landline switch-off is arguably more significant for small businesses than for households. If your business relies on telephone communication — for sales, customer service, bookings, or support — understanding VoIP and planning your migration now is essential. Here is everything you need to know.
Why VoIP Is Actually Better for Small Businesses
The switch-off is not just a problem to manage — it is an opportunity to upgrade to a significantly more capable and flexible phone system. Here is what VoIP gives small businesses that traditional landlines never could:
📍 Work From Anywhere
Your business number rings on your mobile, laptop, or desk phone — wherever you are. Staff working from home answer on the same number as the office. No missed calls, no forwarding complexity.
📞 Professional Call Handling
Auto-attendant menus, call queuing, hold music, voicemail to email, and call recording — features that previously required expensive hardware are now included in most hosted VoIP packages at low monthly cost per user.
💷 Lower Call Costs
VoIP calls — particularly internal calls between staff and calls to other VoIP numbers — are significantly cheaper than traditional landline calls. Most hosted VoIP packages include unlimited UK calls as standard.
📈 Scales With Your Business
Adding a new user to a VoIP system takes minutes and costs a fraction of adding a traditional phone line. Equally, scaling down is just as easy — no engineer visits, no line rental charges, no waiting.
🔗 CRM Integration
Many hosted VoIP systems integrate directly with popular CRM platforms — showing caller details on screen before you answer, logging call history automatically, and enabling click-to-dial from within your CRM.
🔢 Keep Your Number
Your existing business telephone number — whether a local area code or an 0800 number — can almost always be ported to a VoIP system. You keep your number, your customers notice nothing, and you gain a significantly more capable phone system.
Choosing the Right VoIP System for Your Business
Hosted Cloud PBX
Recommended for Most Small BusinessesA cloud-based phone system managed entirely by your VoIP provider — no on-site hardware required beyond handsets or headsets. All call routing, voicemail, auto-attendant, extensions, and call recording are managed through a web portal. The most cost-effective and flexible solution for businesses of 1–50 users. Monthly cost is typically £5–£25 per user depending on features and call package.
✅ Best for
Most UK small businesses — particularly those with remote or hybrid staff
📋 Key Features
Auto-attendant, call queuing, voicemail to email, call recording, softphone app, CRM integration
💷 Typical Cost
£5–£25 per user per month — usually includes unlimited UK calls
SIP Trunking
For Existing PBX SystemsIf your business already has an on-site PBX phone system that you want to keep, SIP trunking connects it to the internet rather than the copper phone network — effectively migrating your existing system to VoIP without replacing all your hardware. SIP trunks replace your traditional phone lines with internet-based equivalents at a lower monthly cost per channel.
✅ Best for
Businesses with existing on-site PBX investment they want to preserve during the switch-off transition
⚠ Consider
Your existing PBX must support SIP — older systems may require an upgrade or replacement gateway device
💷 Typical Cost
£5–£15 per SIP trunk channel per month — each channel supports one simultaneous call
Softphone App Only
Sole Traders & Micro BusinessesFor sole traders and micro businesses with one or two users, a softphone app on a smartphone or laptop — registered to a VoIP number — can be the simplest and lowest cost solution. No hardware required, a local area code or 0800 number, and calls handled through the app. Many softphone providers offer pay-as-you-go or very low monthly subscription options suitable for low call volumes.
✅ Best for
Sole traders, freelancers, and micro businesses with low call volumes and no need for multi-user call handling
📋 Key Features
Business number on your mobile, voicemail, call forwarding, low cost — no hardware investment needed
💷 Typical Cost
From £5–£15 per month for a single user with a UK number and inclusive minutes
The Switch-Off Is Already Happening — Do Not Leave This Too Late
Many UK exchanges have already been switched. If your business is still on traditional copper phone lines or ISDN, your migration deadline may be closer than you think. Read our dedicated UK Landline Switch-Off page for the full timeline and a business-specific action checklist.
REMOTE & HYBRID WORKING
Connectivity for Remote and Hybrid Teams
Remote and hybrid working has become the norm for a significant proportion of UK businesses. But many home workers are still operating on a connectivity setup that was designed for casual personal use — not professional demands. Here is how to get it right.
🏢 If You Are the Employer
You have a duty of care to ensure remote staff can work effectively and safely. Connectivity considerations include:
- Providing or subsidising broadband upgrades for staff who need them
- Supplying appropriate equipment — headsets, ethernet adapters, webcams
- Ensuring your VPN and remote access solutions are optimised for home use
- Having a clear policy on what happens when a home worker's internet goes down
- Providing a VoIP softphone or mobile redirect so staff maintain a professional phone presence
💼 If You Are the Employee
Check with your employer what support is available before spending your own money. Many employers will:
- Contribute to or fully cover broadband upgrade costs for home workers
- Supply a company phone or softphone app for business calls
- Provide a mobile data allowance or SIM for backup connectivity
- Reimburse equipment purchases such as headsets and ethernet adapters
- Have an IT helpdesk that can advise on router and network optimisation
Essential Connectivity Tools for Remote & Hybrid Teams
VoIP Softphone
Gives remote staff a professional business number accessible from any device — no hardware required. See our VoIP page in the Knowledge Hub for a full guide on softphone options.
Powerline Ethernet Adapter
Uses your home's existing electrical wiring to extend a wired ethernet connection to rooms where running cable is not practical. A cost-effective alternative to running ethernet cable through walls for a home office.
Mobile Wi-Fi Router
A dedicated 4G or 5G mobile router provides backup internet connectivity independent of your home broadband — invaluable during outages. More reliable than smartphone hotspot tethering for extended work sessions.
Network Switch
If your home office needs multiple wired connections — desktop, VoIP phone, and a printer for example — a small 5-port ethernet switch plugs into a single ethernet port and provides multiple wired connections from one point. Available from around £15–£30.
A2B NETWORK HUB ON YOUTUBE
Watch Our Business Connectivity Video Guides
We have covered business connectivity topics on our YouTube channel — including the UK landline switch-off and what it means for small businesses, VoIP phone systems explained in plain English, and how to get the most from your broadband connection for remote working. All videos are free and aimed at UK small businesses and home workers.
More business connectivity guides are being added regularly — subscribe to A2B Network Hub so you do not miss them.
Continue Exploring the Knowledge Hub
Everything your business needs to get connected and stay connected — all free, all plain English.
The UK Landline Switch-Off
Everything your business needs to know about the PSTN switch-off, VoIP migration, number porting, and what to do before the copper network is retired in your area.
Check Your Business Broadband Speed
Not getting the speeds you are paying for? Run a free speed test and compare your result against what your business actually needs to operate effectively.
Is It Worth Upgrading to Full Fibre?
Still on FTTC or ADSL? Our upgrade decision guide helps you work out whether full fibre would make a meaningful difference to your business — and whether now is the right time to switch.
Back to Knowledge Hub
Browse all our free connectivity guides covering broadband, Wi-Fi, VoIP, mobile signal, smart home, and more.
Not sure what a term means?
Visit our Home Network Glossary for plain English explanations of every connectivity term used across the Knowledge Hub.
Have a specific business connectivity question?
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