- Network Admin
Network Automation for Small Businesses
18 Mar, 2026
Business VoIP & Phone Systems
Cloud-Hosted Telephony, SIP Trunking & Microsoft Teams Voice
Hosted VoIP
Cloud-based business phone systems with advanced call routing, voicemail, auto-attendant and CRM integration. No hardware on-site, no maintenance headaches.
Microsoft Teams Voice
Make and receive external calls directly from Microsoft Teams. One platform for chat, video, meetings and phone calls — fully integrated with your existing Microsoft 365.
SIP Trunking
Connect your existing PBX to the internet for lower call costs and built-in disaster recovery. Keep your hardware investment while gaining modern flexibility.
Traditional phone lines are expensive, inflexible and holding your business back. VoIP replaces them with a modern, cloud-based system that costs less and does more.
We provide hosted VoIP phone systems, Microsoft Teams voice integration and SIP trunking through our partnership with Fidelity Group. We handle everything — from choosing the right system and configuring your handsets through to number porting, CRM integration and ongoing support. You get enterprise-grade telephony without the enterprise complexity.
Our VoIP solutions
Three routes to modern business telephony. We recommend the right one based on how your team actually works — not what generates the biggest commission.
Cloud Hosted
Hosted VoIP
Full cloud phone system
A complete business phone system hosted in the cloud — no PBX hardware on your premises. Calls route through secure data centres with automatic failover, giving you enterprise-grade reliability with zero maintenance. Scales from 2 users to 2,000.
- Auto-attendant, hunt groups & call queues
- Voicemail to email, call recording & analytics
- 200+ CRM integrations (Salesforce, HubSpot, etc.)
- Softphone app for mobile & desktop
Most Popular
Microsoft Teams Voice
Calling inside Teams
Already using Microsoft Teams for chat and meetings? Add external calling directly inside Teams — one app for everything. Your team makes and receives calls from their existing Teams interface on desktop, mobile or IP handsets. No separate phone system needed.
- External calls directly from Microsoft Teams
- 2,000 UK landline & mobile minutes included
- Single app — chat, video, meetings & phone
- Works on desktop, mobile & IP handsets
Keep Your PBX
SIP Trunking
IP connectivity for existing PBX
Already have a PBX you're happy with? SIP trunking connects it to the internet instead of traditional ISDN lines — slashing your call costs while adding disaster recovery and flexible call routing. Keep your existing investment, modernise the connection.
- Lower call costs than ISDN
- Built-in disaster recovery & call rerouting
- Keep your existing PBX hardware
- ISDN switch-off ready (2025 deadline)
Delivered in partnership with Fidelity Group
We've partnered with Fidelity Group — an award-winning UK hosted telephony provider — to deliver enterprise-grade VoIP solutions to businesses of all sizes. Their Horizon platform and our IT expertise means you get a phone system that's properly configured, integrated and supported.
Fraud Protection
Lifetime Warranty
24/7/365 Support
Our approach to business VoIP
Understand How You Work
We don't sell phone systems — we solve communication problems. We start by understanding how your team actually works: who calls whom, how calls should be routed, what happens when someone's unavailable, and what integrations matter. Then we recommend the right solution.
Configure It Properly
A VoIP system is only as good as its setup. We configure call flows, auto-attendants, hunt groups, voicemail routing and user permissions properly from day one. We port your numbers, set up handsets and test everything end-to-end before go-live.
Support It Like IT
Unlike a telecoms company that disappears after installation, we're an IT company. Your phone system integrates with your network, your internet connection and your business applications — and we support all of it together, not in silos.
How it works
From first conversation to live phone system, we manage the entire process so the switch is seamless for your team.
1
Discovery & Recommendation
We assess your current phone setup, call volumes, team structure and remote working requirements. We check your broadband is suitable for VoIP and recommend the right system — hosted VoIP, Teams Voice or SIP trunking.
2
Configuration & Number Porting
We configure your entire phone system — call flows, auto-attendant menus, hunt groups, voicemail, user permissions and CRM integrations. We port your existing numbers so customers call the same number as before.
3
Handset Setup & Training
We pre-configure IP handsets, install softphone apps on laptops and mobiles, and provide hands-on training for your team. Everyone knows how to use the new system before we switch it on.
4
Go-Live & Ongoing Support
We manage the cutover to minimise disruption, monitor the system post-launch and provide ongoing technical support. Need a new user added, a call flow changed or a handset replaced? One call to us.
Businesses turn to us when
Their traditional phone system is unreliable, expensive to maintain and can't support remote or hybrid workers
They're paying too much for ISDN lines and call charges when VoIP would cost a fraction of the price
The ISDN switch-off is approaching and they need to move to an IP-based phone system before the deadline
They want to use Microsoft Teams for calling but don't know how to set up Teams Voice with external numbers
Their business has grown or added offices and their phone system can't scale without expensive hardware upgrades
They need their phone system integrated with their CRM so calls are logged automatically and customer data pops on screen
They're moving office and want a phone system that moves with them — without engineers and rewiring
Their current provider takes days to add a new user or change a call route — they need a system that's instant and flexible
They want call recording, analytics and reporting but their current phone system doesn't support any of it
Why choose Cloudswitched for business VoIP?
We're not a telecoms reseller that sells you a system and disappears. We're an IT company that understands how your phone system fits into your wider technology stack — your network, your internet connection, your Microsoft 365 environment and your CRM.
When we set up your VoIP system, we're thinking about call quality (is your broadband fast enough?), security (is your firewall configured for SIP traffic?), integration (does it connect to your CRM?) and user experience (can your team actually use it?). Most telecoms providers don't think about any of that.
Through our partnership with Fidelity Group, you get access to the Horizon hosted telephony platform — one of the UK's most reliable and feature-rich VoIP platforms. But unlike going direct, you also get our IT expertise layered on top — proper network configuration, QoS settings, firewall rules and integrated support.
Whether you need a straightforward hosted VoIP system for a small team or a full Microsoft Teams Voice deployment across multiple offices, we'll design the right solution, manage the migration and keep everything running.
Why Cloudswitched for VoIP?
IT company first, telecoms provider second. That's why your phone system actually integrates with everything else.
IT company, not a telecoms reseller
We configure QoS, firewalls, VLANs and network settings properly — not just plug in phones and hope for the best. Your voice quality is our responsibility.
One point of contact
Phone system, internet connection and IT support — all managed by one team. No finger-pointing between providers when something goes wrong.
CRM integration done right
We don't just tick a box — we properly integrate your phone system with your CRM so screen pops, call logging and click-to-dial actually work reliably.
Right system, not the most expensive
If Microsoft Teams Voice is all you need, we won't upsell you a full hosted PBX. We recommend based on what fits your business, not our margin.
Network-first approach
We assess your broadband, configure QoS and test call quality before go-live. If your connection isn't good enough for VoIP, we'll fix that first — we do connectivity too.
Fraud protection included
VoIP fraud is real — hackers can run up thousands in international call charges overnight. Our systems include fraud detection and call barring to protect your business.
Seamless number porting
We manage the entire porting process — coordinating with carriers, scheduling the switchover and ensuring zero downtime. Your customers won't notice a thing.
Hybrid & remote ready
Softphone apps on every device mean your team can make and receive calls from their business number whether they're in the office, at home or on the road.
Scales instantly
Adding a new user takes minutes, not weeks. No engineer visits, no hardware orders, no waiting. Your phone system grows as fast as your business does.
Frequently Asked Questions
Common questions about business VoIP and hosted telephony. If you need more detail, get in touch — we're happy to talk it through.
What's the difference between hosted VoIP and a traditional phone system?
Traditional phone systems use a physical PBX box on your premises connected to ISDN lines. Hosted VoIP moves everything to the cloud — calls route through secure data centres over your internet connection. No hardware to maintain, lower costs, more features and works from anywhere.
Can I keep my existing phone numbers?
Yes. We port your existing numbers to the new VoIP system so your customers, website and marketing materials don't need to change. The porting process typically takes 1-2 weeks and we manage it entirely on your behalf.
How much does business VoIP cost?
Hosted VoIP typically costs £8-£15 per user per month depending on features and call bundles. Microsoft Teams Voice is similar. Most businesses save 30-50% compared to traditional ISDN-based phone systems. We'll provide a clear quote based on your user count and requirements.
Is VoIP call quality as good as a landline?
With a properly configured network and sufficient broadband, VoIP call quality is indistinguishable from a traditional landline — often better. We configure QoS settings to prioritise voice traffic and test call quality before go-live to ensure it meets business standards.
What happens if my internet goes down?
We configure failover routing so calls automatically redirect to mobile phones or an alternative number if your internet drops. For businesses where phones are critical, we can also set up a 4G/5G backup broadband connection through our connectivity service.
Do I need special phones for VoIP?
You'll need IP handsets (we supply and configure these) or softphone apps on your computers and mobile phones. If you're using Microsoft Teams Voice, you can use your existing Teams app — no additional hardware required unless you want desk handsets.
Get a free VoIP consultation
Tell us about your current phone setup and we'll recommend the right solution — no obligation, no pressure. We'll assess your network, map your call flows and give you a clear, honest quote.
Upgrade your business phones
Whether you need a hosted VoIP system, Microsoft Teams Voice or SIP trunking for your existing PBX, our team is ready to design the right solution and manage the entire migration for you.
Submit your details and one of our friendly team members will be in touch with you shortly