Key Takeaways

  • Business internet is fundamentally different from home broadband — contention ratios, SLAs, support levels, and security requirements all change when your livelihood depends on the connection.
  • Choosing the right broadband type (FTTC, FTTP, leased line, 4G/5G, or a combination) depends on your employee count, how you use technology, and what downtime would cost you.
  • Every business should have an internet failover plan. A 4G/5G backup costs as little as £20/month and prevents the average £1,600/hour cost of downtime.
  • Business WiFi requires proper access points, site surveys, and VLAN segmentation — consumer routers are not built for office environments with dozens of devices.
  • Drakos Systems designs, installs, and manages complete internet solutions for businesses across Northern Ireland — broadband, leased lines, failover, WiFi, security, and phones, all from Belfast.

Table of Contents

  1. Why Business Internet is Different from Home Internet
  2. Types of Business Broadband
  3. Understanding Bandwidth, Latency, and Contention
  4. Service Level Agreements (SLAs)
  5. When Your Internet Goes Down
  6. Internet Failover Solutions
  7. Business WiFi Design
  8. Network Security Essentials
  9. Choosing the Right Internet Solution
  10. How Drakos Systems Can Help
  11. Frequently Asked Questions

1. Why Business Internet is Different from Home Internet

Walk into any electronics shop and you can pick up a home broadband deal for £25 a month. It will stream Netflix, handle video calls with the grandparents, and let the kids play online games. So why would a business pay two, three, or even ten times that amount for an internet connection?

The answer comes down to five things: contention, service level agreements, support, quality of service, and security. Each one matters when your revenue depends on staying connected.

Contention Ratios

Home broadband typically has a contention ratio of 50:1 — meaning up to 50 households share the same bandwidth at the exchange. During the evening when everyone is streaming, speeds drop. That's annoying at home. In a business, it's a problem. Business broadband reduces that ratio to around 20:1, and leased lines eliminate contention entirely. When your VoIP phones, cloud accounting software, and card payment terminals all need bandwidth at 10am on a Tuesday, contention is the difference between everything working and everything crawling.

Support and Fault Repair

Report a fault on your home broadband and you'll get a ticket number and a vague promise that someone will look at it within 48 hours. You might get a callback. You might not. Business internet comes with priority support — dedicated account managers, UK-based engineering teams, and defined fault repair windows. On a leased line with an SLA, the carrier is contractually obligated to have your connection restored within 4-6 hours. On home broadband, you could be waiting days.

Quality of Service (QoS)

Business routers and connections support Quality of Service — the ability to prioritise certain types of traffic over others. VoIP calls get priority over file downloads. Video conferencing gets priority over software updates. This ensures that the applications your business depends on always get the bandwidth they need, even when the connection is under heavy load. Home routers don't offer this level of traffic management, which is why VoIP calls break up and video freezes when someone starts a large download.

Security Requirements

A home network protects personal photos and a few devices. A business network protects customer data, financial records, employee information, and intellectual property — all of which fall under GDPR and potentially other regulatory frameworks. Business internet solutions include proper firewalls, network segmentation, encrypted connections, and monitoring capabilities that home broadband simply doesn't provide. The consequences of a breach are fundamentally different: inconvenience at home, potential fines and reputational damage for a business.

For businesses across Belfast and Northern Ireland, the shift to cloud-based operations has made these differences more critical than ever. When your phone system, your accounts package, your CRM, and your file storage all live in the cloud, your internet connection isn't just a utility — it's the foundation your entire business runs on.

2. Types of Business Broadband

Not all broadband is created equal. The type of connection available at your premises — and the type that's right for your business — depends on your location, your budget, and how you use the internet. Here's a plain-English breakdown of every option available to businesses in Northern Ireland and the wider UK. For tailored recommendations, see our guide to the best broadband for small businesses in the UK.

FTTC — Fibre to the Cabinet

FTTC runs fibre optic cable from the telephone exchange to a green street cabinet, then uses the existing copper telephone line for the final stretch to your building. That last section of copper is the weak link. Speeds typically range from 40-80Mbps download and 10-20Mbps upload, but the further you are from the cabinet, the slower it gets. A business 200 metres from the cabinet might see 70Mbps. At 1,200 metres, you could be looking at 25Mbps.

Pros: Widely available across NI, affordable (£25-£50/month), quick installation (1-2 weeks).

Cons: Asymmetric speeds (slow upload), performance depends on distance from cabinet, no speed guarantees, shared bandwidth.

Best for: Small offices with basic internet needs — email, web browsing, light cloud use. Not ideal for VoIP-heavy or cloud-dependent businesses.

FTTP — Fibre to the Premises

FTTP eliminates the copper bottleneck entirely by running fibre optic cable directly into your building. Speeds range from 100Mbps to over 1Gbps, with symmetrical upload options available on many packages. This is the connection type most businesses should be targeting in 2026.

FTTP availability has expanded rapidly across Northern Ireland. Openreach and alternative providers like Fibrus have rolled out full fibre to Belfast city centre, large parts of Lisburn, Newry, Craigavon, Bangor, and Derry. Rural rollout continues, with many previously underserved areas now getting coverage.

Pros: Fast symmetric speeds, reliable, future-proof, increasingly affordable (£30-£80/month).

Cons: Still contended (shared bandwidth), no SLA on standard packages, not yet available everywhere.

Best for: Most SMEs — offices running VoIP, cloud applications, and video conferencing. The default choice for businesses with 5-50 employees where FTTP is available.

Leased Lines

A leased line is a dedicated, uncontended fibre connection between your premises and the carrier's network. The bandwidth is exclusively yours — no sharing, no slowdowns, no "up to" in the speed specification. If you order 100Mbps, you get 100Mbps, symmetrically, around the clock. For a detailed comparison, read our guide on fibre leased lines vs broadband.

Pros: Guaranteed symmetric speeds, SLA with uptime and fault repair commitments, uncontended, static IPs, priority support.

Cons: Higher cost (£150-£500/month), longer installation (30-90 days), requires wayleave if fibre needs to be laid.

Best for: Businesses with 30+ employees, VoIP-dependent operations, payment processing, cloud-heavy workflows, or any business where downtime directly costs money.

4G/5G Business Broadband

Mobile broadband has matured into a genuine business option. 4G delivers 20-50Mbps in most areas, while 5G can reach 100-500Mbps where coverage exists. Belfast city centre has strong 5G coverage from EE and Three, with other networks expanding through 2026.

Pros: Rapid deployment (hours, not weeks), no physical line needed, works anywhere with mobile signal, ideal for temporary sites.

Cons: Variable speeds, shared with all mobile users in the area, signal-dependent, potential data caps.

Best for: Failover backup, temporary offices, construction sites, events, rural locations with poor fixed-line options.

Starlink

SpaceX's low-Earth orbit satellite service delivers 50-200Mbps to businesses anywhere with a clear sky view. Across rural Northern Ireland — from the Sperrins to Fermanagh — Starlink is providing broadband-grade connectivity where no other option exists.

Pros: Available anywhere, no ground infrastructure needed, decent speeds, no long-term contract.

Cons: Higher latency (25-60ms), no SLA, variable speeds during congestion, requires clear sky view, £75/month plus £450 hardware.

Best for: Rural businesses with no fibre or 4G, backup connection independent of terrestrial infrastructure.

Cable Broadband

Virgin Media's cable network offers speeds up to 1Gbps in areas with coverage. The network uses coaxial cable for the last stretch, which provides faster speeds than FTTC copper but doesn't match FTTP fibre for reliability or upload speeds.

Pros: Fast download speeds, widely available in urban NI, competitive pricing.

Cons: Asymmetric (slow upload), contended, limited business-specific packages, coverage gaps outside urban areas.

Best for: Businesses in Virgin Media coverage areas that need fast downloads but don't have FTTP available yet.

3. Understanding Bandwidth, Latency, and Contention

Three technical concepts determine whether your internet connection actually works well for business. Understanding them in plain English helps you make better decisions about what to buy and how to troubleshoot problems.

Bandwidth — How Much Data Can Flow

Bandwidth is the capacity of your connection — how much data it can carry at once. Think of it as the width of a motorway. A 100Mbps connection can carry 100 megabits of data per second. More bandwidth means more devices and applications can work simultaneously without competing for space.

For business planning: each VoIP call needs approximately 100Kbps. A video conference needs 2-4Mbps per participant. Cloud backup running in the background might use 10-20Mbps. A team of 20 people all working simultaneously — making calls, joining video meetings, accessing cloud files — can easily consume 50-100Mbps. This is why the "up to 80Mbps" FTTC connection that seemed fast on paper feels sluggish by mid-morning.

Latency — How Fast Data Travels

Latency is the time it takes for a packet of data to travel from your device to the server and back. It's measured in milliseconds (ms). Low latency means responsive, real-time communication. High latency means delays, echoes on VoIP calls, and lag in cloud applications.

Fibre broadband typically delivers 5-15ms latency. 4G sits around 30-50ms. 5G can achieve 10-20ms. Starlink ranges from 25-60ms. Traditional satellite internet (not Starlink) can exceed 600ms, which makes VoIP calls virtually unusable.

For most business applications, latency under 30ms is excellent. Under 50ms is acceptable. Above 100ms, you'll notice delays on VoIP calls, video conferencing will stutter, and real-time cloud applications will feel sluggish. If your business runs VoIP phones — and after the PSTN switch-off in January 2027, every business will — latency matters as much as raw speed.

Contention — How Many People Share Your Connection

Contention is the number of users sharing the same bandwidth at the exchange or distribution point. A contention ratio of 50:1 means up to 50 connections share the same capacity. At 3am, you might have the full bandwidth to yourself. At 11am on a weekday, you're competing with every other business and household on the same exchange.

Consumer broadband: 50:1 contention. Business broadband: typically 20:1. Leased line: 1:1 — completely uncontended. This is why a leased line delivers consistent speeds regardless of time of day, while broadband speeds fluctuate. For businesses in busy commercial areas of Belfast, Lisburn, or Derry, contention during business hours can reduce actual speeds to a fraction of the advertised figure.

Why This Matters for VoIP and Cloud

VoIP phone calls need consistent, low-latency bandwidth. A call doesn't need much — about 100Kbps — but it needs that bandwidth to be available without interruption. If contention causes a momentary bandwidth squeeze, or if latency spikes because the network is congested, the call breaks up, echoes, or drops entirely. The same applies to video conferencing, real-time collaboration tools, and cloud-hosted line-of-business applications. These tools need reliable, consistent connectivity — not just fast headline speeds.

4. Service Level Agreements (SLAs)

An SLA is a contractual commitment from your internet provider that defines exactly what service you'll receive — and what happens when they fail to deliver. It's the single most important distinction between business-grade and consumer-grade connectivity. For a full explanation, see our guide on what an SLA means for business internet.

What an SLA Typically Covers

Uptime guarantee: Expressed as a percentage. 99.9% uptime means no more than 8.76 hours of downtime per year. 99.99% means no more than 52.6 minutes. The difference between those two figures — roughly eight hours — can represent thousands of pounds in lost revenue for a busy business.

Fault repair time: The maximum time the carrier has to restore your service after a fault is reported. Leased line SLAs typically guarantee 4-6 hour repair. Enhanced SLAs offer 2-hour response for critical circuits. Compare that to broadband, where 24-72 hours is standard and there's no contractual obligation to meet even that.

Speed guarantee: The minimum speed your connection will deliver at all times. Not "up to" — actually guaranteed. If the carrier fails to deliver the contracted speed, the SLA is breached and compensation applies.

Compensation: Service credits or financial penalties when the carrier breaches the SLA. This creates a genuine financial incentive for the provider to maintain your service and fix faults quickly.

Broadband vs Leased Line SLAs

Standard broadband — even packages marketed as "business broadband" — operates on a best-effort basis. The provider will try to deliver the advertised speed and try to fix faults promptly, but there is no contractual obligation to do either. If your broadband fails at 9am on Monday and isn't restored until Wednesday afternoon, your provider owes you nothing beyond a token credit. Read more about why broadband has no SLA.

A leased line SLA is a legally binding contract. The carrier guarantees specific uptime, specific speeds, and specific fault repair times. If they miss any of these targets, you receive compensation — automatically in many cases. This accountability is what you're paying for when you choose a leased line over broadband. For a deeper comparison, see our guide on guaranteed uptime vs best-effort service.

Reading the Fine Print

Not all SLAs are equal. When evaluating an SLA, check the specific uptime percentage (not vague "high availability" promises), the exact fault repair time in hours (not "as soon as reasonably possible"), whether compensation is automatic or requires you to file a claim, what exclusions apply (planned maintenance, force majeure, faults on your own equipment), and whether the SLA covers the entire connection or just the carrier's network. A reputable provider will explain their SLA in plain English and be transparent about what is and isn't covered.

5. When Your Internet Goes Down

It's 9:30am on a Tuesday. Your broadband drops. Within seconds, the impact cascades across your entire business. Understanding exactly what happens — and how long it takes to fix — is essential for planning your connectivity strategy. For a detailed breakdown, see our guide on what happens when your business internet goes down.

The Immediate Impact

VoIP phones go silent. Every call in progress drops. No incoming calls can reach you. No outgoing calls can be made. After the PSTN switch-off in January 2027, there won't even be a traditional phone line to fall back on. Your business becomes unreachable.

Card payments stop. If you process payments over broadband — and most businesses do — every card terminal goes offline. Customers can't pay. Sales stop. For retail businesses in Belfast's Victoria Square, Cathedral Quarter, or any high street across Northern Ireland, this means turning customers away or scrambling for cash-only workarounds.

Cloud applications freeze. Microsoft 365, Google Workspace, Xero, Sage, Salesforce, your CRM, your project management tools — all inaccessible. Staff sit idle or resort to working from their phones' mobile data, which is neither productive nor secure.

CCTV and security systems go blind. Cloud-connected CCTV cameras stop recording to remote storage. Remote monitoring becomes impossible. Access control systems that depend on internet connectivity may fail.

Fault Repair Times — The Reality

How quickly your connection is restored depends entirely on what type of connection you have and whether it's backed by an SLA. For a detailed look at typical timelines, read our guide on broadband fault repair times in the UK.

Standard broadband: Fault reported to ISP. Ticket raised. Engineer visit scheduled — typically 24-72 hours, sometimes longer. If the fault is at the exchange or in the street infrastructure, Openreach handles the repair on their own timeline. Your ISP has limited ability to escalate. Total downtime: potentially 1-3 days.

Business broadband with enhanced support: Faster fault logging, priority in the repair queue. Typical repair: 12-24 hours. Better than standard, but still no contractual guarantee.

Leased line with SLA: Fault detected (often automatically by the carrier's monitoring). Engineer dispatched within the SLA window. Typical repair: 4-6 hours. If the carrier misses the SLA target, compensation applies. This is the level of service that businesses with revenue-critical connectivity need.

The Cost of Downtime

Research from multiple UK sources consistently puts the average cost of internet downtime for an SME at £800-£1,600 per hour. That includes lost sales, lost productivity, missed calls, failed payments, and the harder-to-quantify cost of reputational damage. A single four-hour outage can cost a small business more than an entire year of failover service. For businesses in Northern Ireland's growing tech and professional services sectors, the figure can be significantly higher.

6. Internet Failover Solutions

Internet failover is the practice of maintaining a backup connection that activates automatically when your primary connection fails. In 2026, with every phone call, payment, and cloud application depending on internet connectivity, failover has moved from luxury to necessity. For a complete overview, read our guide on what internet failover is and how it works.

How Automatic Failover Works

A failover system uses a router or gateway with two or more WAN connections. Your primary connection — typically fibre broadband or a leased line — handles all traffic under normal conditions. The router continuously monitors the primary connection using ping tests or link-state detection. When it detects a failure, it automatically switches all traffic to the secondary connection — typically 4G/5G — within seconds. When the primary recovers, traffic switches back automatically.

The switchover is seamless for most applications. Web browsing, email, and cloud applications continue without interruption. VoIP calls in progress may drop during the brief switchover (a few seconds), but new calls route over the backup connection immediately.

Failover Options Compared

4G/5G Router Failover: The most common and cost-effective option. A 4G/5G router with a multi-network SIM sits alongside your primary router and takes over when needed. Multi-network SIMs connect to whichever mobile network has the strongest signal at your location (EE, Three, Vodafone, O2), adding an extra layer of resilience. Cost: £20-£60/month for the SIM plus £200-£500 for the router. For implementation details, see our guide on SIM failover for business continuity.

Dual-WAN Gateway: A single router with two WAN ports — one for your primary broadband and one for your backup. Devices like the Peplink Balance, DrayTek Vigor, and TP-Link ER series handle failover automatically and can also load-balance across both connections during normal operation, giving you more bandwidth when everything is working.

Starlink Backup: For businesses in areas with poor 4G coverage, Starlink provides a failover connection that's completely independent of terrestrial infrastructure. If a digger cuts through the fibre cable serving your street, Starlink keeps working. Cost: £75/month plus hardware.

Dual Broadband: Two separate broadband connections from different carriers, ideally using different physical infrastructure (e.g., one Openreach FTTP and one Fibrus FTTP, or one fibre and one cable). More expensive but provides higher total bandwidth during normal operation. For a comprehensive look at all options, see our guide on business continuity internet solutions.

Our Recommendation

For most businesses in Northern Ireland, the optimal failover setup is FTTP fibre broadband as the primary connection with a 4G/5G multi-network SIM as backup, managed through a dual-WAN router. Total additional cost for failover: approximately £40-£80/month. That's a fraction of what even one hour of downtime would cost. For VoIP-dependent businesses — which after the PSTN switch-off means every business — failover isn't optional. It's essential.

7. Business WiFi Design

Your internet connection is only as good as the WiFi network that distributes it. A 500Mbps fibre connection is worthless if your WiFi drops out in the meeting room, crawls in the warehouse, or buckles under 30 simultaneous devices. Business WiFi is a discipline in itself — and getting it right requires planning, proper equipment, and professional configuration. For product recommendations, see our guide to the best business WiFi systems.

Why Consumer Routers Fail in Business

The WiFi router your ISP provides is designed for a household of 5-10 devices streaming video and browsing the web. A typical business environment is fundamentally different: 20-100+ devices (laptops, phones, tablets, printers, VoIP handsets, CCTV cameras, IoT sensors) all competing for bandwidth simultaneously, many running latency-sensitive applications like VoIP and video conferencing.

Consumer routers lack the processing power, antenna design, and management features to handle this load. They overheat, drop connections, create bottlenecks, and provide no visibility into what's happening on your network. The result is intermittent WiFi issues that are maddening to diagnose and impossible to fix without replacing the hardware entirely. Never use a consumer router for business — it's a false economy that costs more in lost productivity than proper equipment ever would.

Site Surveys — The Foundation of Good WiFi

A professional WiFi site survey maps your premises to determine the optimal number and placement of access points. It accounts for wall materials (brick and concrete block WiFi signals far more than plasterboard), floor plans, interference sources (microwaves, Bluetooth devices, neighbouring networks), and the number of devices expected in each area. For a step-by-step guide, see how to set up office WiFi properly.

Without a site survey, you're guessing. Guessing leads to dead spots in the boardroom, interference in the open-plan office, and wasted money on access points in the wrong locations. A proper survey takes a few hours and saves thousands in rework and troubleshooting. Every WiFi installation Drakos Systems carries out in Belfast and across Northern Ireland starts with a site survey — it's the only way to guarantee the result.

Business Access Points

Business WiFi uses dedicated access points (APs) — ceiling or wall-mounted units designed to serve dozens of simultaneous connections with consistent performance. Each AP covers a specific area, and multiple APs work together to provide seamless roaming as users move around the building. The two leading platforms for SME WiFi are:

TP-Link Omada: Excellent value for money, cloud-managed or locally managed via a hardware controller, WiFi 6 and WiFi 6E models available, strong feature set including VLANs, captive portals, and bandwidth management. Ideal for small to medium businesses. Access points from £60-£200 each.

Ubiquiti UniFi: The industry standard for SME WiFi, with a huge range of access points, switches, and gateways. Powerful management software, excellent build quality, WiFi 6 and WiFi 7 models available. Slightly higher cost than Omada but with a larger ecosystem. Access points from £100-£300 each.

For a detailed comparison, read our guide on TP-Link Omada vs Ubiquiti UniFi. Both platforms are excellent — the right choice depends on your budget, scale, and whether you need cloud management. For a broader look at the technology, see our comparison of mesh WiFi vs access points.

VLANs and Guest Networks

Every business that offers WiFi to visitors, customers, or guests should run it on a separate VLAN (Virtual Local Area Network) that is completely isolated from the internal business network. This prevents guests from accessing your file servers, printers, or other internal resources, and protects your business network from any malware on guest devices.

Best practice is to run at least three VLANs: one for staff devices (laptops, desktops), one for guest WiFi, and one for IoT devices (CCTV cameras, printers, smart devices). Business access points from both TP-Link Omada and Ubiquiti UniFi support multiple SSIDs on separate VLANs, captive portals for guest login, bandwidth limits per user, and usage logging for compliance. For businesses in hospitality, retail, or healthcare across Northern Ireland, proper guest WiFi isn't just good practice — it's a regulatory expectation.

WiFi 6, 6E, and WiFi 7

WiFi 6 (802.11ax) is now the standard for business access points, offering significantly better performance in dense environments with many devices. WiFi 6E extends this into the 6GHz band, providing additional channels and less interference from neighbouring networks. WiFi 7 (802.11be) is beginning to appear in enterprise hardware, promising even higher throughput and lower latency. For most businesses deploying new WiFi in 2026, WiFi 6 or WiFi 6E access points offer the best balance of performance, device compatibility, and cost.

8. Network Security Essentials

A fast, reliable internet connection is a liability if it isn't properly secured. Every connection to the internet is a potential entry point for attackers, and businesses of all sizes are targets — not just large corporations. The UK's National Cyber Security Centre reports that 39% of UK businesses identified a cyber attack in the past 12 months, with the average cost of a breach for an SME exceeding £8,000. For a comprehensive overview, see our guide on cybersecurity essentials for small businesses.

Firewalls — Your First Line of Defence

A business firewall sits between your internal network and the internet, inspecting all incoming and outgoing traffic and blocking anything that matches known threat signatures or violates your security policies. Consumer routers include basic firewall functionality, but a dedicated business firewall provides deep packet inspection, intrusion detection and prevention (IDS/IPS), content filtering, VPN termination, and detailed logging.

Leading firewall vendors for SMEs include Fortinet (FortiGate series), SonicWall, WatchGuard, and the open-source pfSense platform. For product guidance, see our guides on what a business firewall is and the best firewalls for small businesses. A proper firewall is not optional for any business handling customer data, financial information, or operating under GDPR — which means every business in the UK.

VLANs and Network Segmentation

Network segmentation divides your network into isolated zones. Your VoIP phones, CCTV cameras, guest WiFi, IoT devices, and business computers should each sit on separate VLANs. If a device on one VLAN is compromised — say a guest's infected laptop — the attacker cannot move laterally to your business data, your phone system, or your CCTV recordings.

This is a fundamental security practice that costs nothing beyond proper switch and access point configuration, yet many businesses across Belfast and Northern Ireland still run everything on a single flat network. A flat network means that a compromised printer can be used as a stepping stone to your file server. VLANs prevent that.

Encryption

All WiFi networks should use WPA3 encryption — the latest and most secure wireless encryption standard. If your access points don't support WPA3, WPA2 is the minimum acceptable standard. WEP and open networks should never be used for business.

Beyond WiFi, all remote access should use encrypted VPN tunnels. All web-based applications should use HTTPS. All email should use TLS encryption in transit. For businesses handling sensitive data — financial records, medical information, legal documents, customer personal data — encryption is both a security necessity and a legal requirement under GDPR.

Endpoint Protection

Every device on your network needs endpoint protection software that detects and blocks malware, ransomware, and phishing attacks. Modern endpoint protection goes beyond traditional antivirus to include behavioural analysis, cloud-based threat intelligence, and automated response. Solutions like Microsoft Defender for Business, SentinelOne, and CrowdStrike provide enterprise-grade protection at SME-friendly prices. Every laptop, desktop, and mobile device that connects to your business network should be protected — no exceptions.

Patching and Firmware Updates

The majority of successful cyber attacks exploit known vulnerabilities that have already been patched by the vendor. Keeping your routers, firewalls, access points, switches, and all network equipment updated with the latest firmware is one of the most effective security measures you can take — and one of the most commonly neglected. Set a monthly schedule to check for and apply updates. Better yet, use a managed IT provider who handles this for you automatically.

9. Choosing the Right Internet Solution

There is no single "best" internet solution — the right answer depends on your business size, location, budget, and how you use technology. Here's a practical decision matrix based on the businesses we work with across Northern Ireland and the wider UK.

Micro Business (1-5 Employees)

  • Primary connection: FTTP fibre broadband (100-300Mbps) — £30-£50/month
  • Failover: 4G multi-network SIM with basic router — £20-£30/month
  • WiFi: 1-2 business access points (TP-Link Omada EAP series) — £60-£120 each
  • Security: Router firewall, WPA3 WiFi encryption, endpoint protection on all devices
  • Estimated monthly cost: £50-£80 plus one-off hardware

This setup suits home offices, sole traders with a fixed premises, small retail shops, cafés, and tradespeople. It provides reliable internet with automatic failover for under £100/month — a fraction of what even a few hours of downtime would cost.

Small Business (5-30 Employees)

  • Primary connection: FTTP fibre broadband (300Mbps-1Gbps) or entry-level leased line (100Mbps) — £50-£250/month
  • Failover: 4G/5G multi-network SIM with dual-WAN router (Peplink or DrayTek) — £40-£60/month
  • WiFi: 3-6 business access points based on site survey, centrally managed — £500-£1,500 installed
  • Security: Dedicated business firewall (Fortinet or SonicWall), VLANs for voice/data/guest, endpoint protection
  • Estimated monthly cost: £150-£400 plus hardware and installation

This is the sweet spot for most SMEs in Belfast and Northern Ireland — accountancy firms, solicitors, medical practices, recruitment agencies, estate agents, and growing businesses. The combination of fast fibre (or an entry-level leased line for guaranteed uptime), proper failover, and managed WiFi provides enterprise-grade reliability at an affordable price.

Medium Business (30-100 Employees)

  • Primary connection: Leased line (100Mbps-1Gbps) with SLA — £200-£500/month
  • Failover: Secondary broadband from a different carrier, plus 4G/5G as tertiary backup
  • WiFi: Full site survey with 8-20+ access points, WiFi 6/6E, centrally managed — £2,000-£8,000 installed
  • Security: Next-generation firewall with IDS/IPS, network segmentation across multiple VLANs, managed endpoint protection, regular vulnerability assessments
  • Estimated monthly cost: £400-£1,000 plus hardware and professional installation

At this scale, a leased line becomes essential. The business cannot afford the risk of contended broadband as its primary connection. Multiple layers of failover ensure no single point of failure can take the business offline. Professional WiFi design and network security are critical as device counts and user numbers increase.

Large Business (100+ Employees)

  • Primary connection: High-capacity leased line (1Gbps-10Gbps) with enhanced SLA — £500-£2,000+/month
  • Failover: Diverse-path secondary leased line (physically separate route), plus 4G/5G for emergency backup
  • WiFi: Enterprise WiFi deployment with full site survey, 30+ access points, WiFi 6E/7 — £10,000+ installed
  • Security: Enterprise firewall cluster, SD-WAN for multi-site connectivity, SIEM monitoring, SOC services, zero-trust architecture
  • Estimated monthly cost: £1,500-£5,000+ for connectivity and security services

Large businesses require enterprise-grade infrastructure with no single points of failure. Diverse-path leased lines ensure that even a physical cable cut doesn't take the business offline. SD-WAN technology connects multiple sites into a single managed network. Security operations centres provide 24/7 threat monitoring and incident response.

10. How Drakos Systems Can Help

Drakos Systems is a Belfast-based technology provider serving businesses across Northern Ireland and the UK. We don't just sell internet connections — we design, deploy, and manage complete internet solutions tailored to your business. One provider, one relationship, one support number.

Every Connection Type, One Provider

We supply and manage fibre broadband (FTTP and FTTC), leased lines, 4G/5G business internet, Starlink, and everything in between. Because we work with all major UK carriers — not just one network — we source the best connection for your specific location and requirements. No bias towards one provider. Just the right solution for your address and your business.

Internet Failover and Business Continuity

We design and install failover solutions that keep your business online when your primary connection fails. From simple 4G backup routers to sophisticated dual-WAN gateways with multi-network SIMs, we match the solution to your risk tolerance and budget. Every failover system we deploy is tested, monitored, and supported.

Business WiFi Design and Installation

Our engineers carry out professional site surveys and design WiFi networks that actually work — proper access point placement, correct channel planning, separate VLANs for business and guest traffic, and central management. We deploy TP-Link Omada and Ubiquiti UniFi systems and provide ongoing support and monitoring. Whether it's a small office in Belfast's Titanic Quarter or a multi-floor building in Lisburn, we design WiFi that covers every corner.

Network Security

We deploy and manage business firewalls, configure VLANs and network segmentation, implement endpoint protection, and provide ongoing security monitoring. Our ISO 27001 certification means our processes meet the highest international standards for information security management.

Business Phone Systems

Your phone system and your internet connection are now inseparable. We provide VoIP and hosted telephony solutions that integrate seamlessly with the connectivity infrastructure we design. When one team manages your internet, your WiFi, your security, and your phones, everything works together — and when something goes wrong, there's one number to call.

Managed IT Support

Beyond connectivity, we provide managed IT support — proactive monitoring, patching, helpdesk, and strategic IT planning. We become your IT department, handling everything from day-to-day support tickets to long-term technology strategy.

Free Site Survey

Not sure where to start? We offer a free, no-obligation site survey. Our engineers will assess your premises, check available connections at your address, evaluate your current setup, and recommend the right solution for your business. Whether you're in Belfast city centre, a business park in Lisburn, a retail unit in Newry, or a rural site in County Fermanagh, we'll find the best option for your location and your budget.

11. Frequently Asked Questions

What broadband speed does my business need?

As a guide: 10Mbps per 5 employees for basic use such as email and web browsing, 50-100Mbps for 10-30 employees using VoIP and cloud applications, and 100Mbps+ or a leased line for 30+ employees or heavy cloud usage. Each simultaneous VoIP call needs approximately 100Kbps of dedicated bandwidth. Video conferencing needs 2-4Mbps per participant. When in doubt, choose more bandwidth than you think you need — the cost difference between speed tiers is usually small.

What is the difference between FTTC and FTTP?

FTTC (Fibre to the Cabinet) uses fibre optic cable to a street cabinet, then copper telephone wire for the last stretch to your building. This copper section limits speeds to 40-80Mbps and performance degrades with distance. FTTP (Fibre to the Premises) runs fibre directly into your building, delivering 100Mbps to 1Gbps+ with consistent, symmetrical speeds. FTTP is faster, more reliable, and increasingly available across Northern Ireland thanks to Openreach and Fibrus rollouts. If FTTP is available at your address, it should always be your first choice over FTTC.

Should I get a leased line or broadband?

Broadband is suitable for businesses that can tolerate occasional slowdowns and brief outages without significant financial impact. A leased line is the right choice for businesses where downtime directly costs money — those dependent on VoIP phones, processing card payments, running cloud-hosted line-of-business applications, or operating with 30+ employees. Leased lines cost more (£150-£500/month vs £30-£80/month for broadband) but include SLA guarantees for uptime, speed, and fault repair times. The premium is justified when the cost of a single day's downtime exceeds the annual cost difference.

How do I secure my business WiFi network?

Start with WPA3 encryption on all wireless networks. Separate your network into VLANs — at minimum, one for staff devices, one for guest WiFi, and one for IoT devices like CCTV cameras and printers. Use business-grade access points (TP-Link Omada or Ubiquiti UniFi, not consumer routers) that support proper security features. Deploy a dedicated business firewall between your network and the internet. Keep all firmware and software updated with the latest security patches. Never use consumer routers for business — they lack the security features, processing power, and management capabilities that business environments require.

What is the best internet backup for a business?

For most businesses, a 4G/5G multi-network SIM with an automatic failover router is the best balance of cost and reliability. Multi-network SIMs connect to whichever mobile network has the strongest signal, so you're not dependent on a single carrier. The SIM costs £20-£60/month and the router £200-£500 as a one-off purchase. When your primary broadband fails, the router switches to 4G/5G automatically within seconds. This is essential for any business running VoIP phones — especially after the PSTN switch-off in January 2027, when your phones will depend entirely on your internet connection.

Need Better Business Internet?

Whether you need faster broadband, a leased line, failover protection, WiFi that actually works, or a complete network overhaul, Drakos Systems will design the right solution for your business. Book a free site survey — no obligation, no hard sell. Just honest advice from Belfast-based internet experts.

Book Free Site Survey 📞 Call 02890 184 600

About the Author: Drakos Systems has been providing business internet solutions to companies across Northern Ireland and the UK for over 20 years. We're ISO 27001 certified and provide broadband, leased lines, 4G/5G, Starlink, business WiFi, VoIP phone systems, managed IT, and CCTV from our Belfast headquarters. We work with all major UK carriers to source the best connection for every business, regardless of location.

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