VoIP & Business Phone Systems

Modern cloud phone systems for South Wales businesses β€” hosted VoIP, Microsoft Teams Direct Routing, SIP trunks and internet phones. Save up to 40% on your phone bill and be PSTN switch-off ready.

Calculate Your Savings πŸ“ž 01656 521505
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Hosted VoIP
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VoIP Hosted
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Teams Calling
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Number Porting
Quick Cost Estimate

How many phone users do you need to support?

Estimated from
Β£75 /month
incl. handsets, hosting & UK calls
Get an Exact Quote β†’ Full Cost Calculator ↓
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PSTN & ISDN lines are being switched off across the UK by December 2025. Every UK business must migrate to VoIP β€” don't leave it too late.
More Info β†’

Replace old lines with something better β€” and cheaper.

A modern VoIP system does everything your old phone line did, plus mobile apps, call recording, video meetings and Teams integration β€” for significantly less money.

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Cloud Phone System

Fully hosted VoIP β€” voice, video and messaging in one platform with desktop and mobile apps.

  • Desktop & mobile apps
  • Video conferencing built-in
  • CRM integration
  • Call recording
Find out more β†’
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VoIP Phone Systems

Hosted cloud telephony replacing traditional ISDN. Unlimited UK calls, HD voice and simple web management.

  • Unlimited UK calls included
  • Auto-attendant & IVR
  • Voicemail to email
  • Hunt groups & queues
Get a Quote β†’
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Teams Direct Routing

Make and receive phone calls directly through Microsoft Teams. No separate phone system needed.

  • Uses existing Teams licence
  • Full PSTN replacement
  • Direct inward dialling
Get a Quote β†’
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SIP Trunks

Replace ISDN channels with SIP trunks β€” same functionality, lower cost, PSTN switch-off ready.

  • Works with existing PBX
  • Flexible channel counts
  • Lower line rental costs
Get a Quote β†’
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Number Porting

Keep your existing numbers when you switch. All UK numbers are portable β€” zero disruption to customers.

  • All UK numbers portable
  • Managed end-to-end
  • Zero downtime migration
Get a Quote β†’
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Business Mobile SIMs

Business SIM plans with data pooling, multi-network coverage and central management as part of your telephony package.

  • Multi-network coverage
  • Data pooling across SIMs
  • 4G/5G options
Get a Quote β†’

One platform for all your business communications.

Our hosted VoIP platform brings together voice calls, video meetings, instant messaging, file sharing and more β€” all in one application accessible from any device.

Thorne Technology handles the setup, migration, handset configuration and ongoing management. We're your single point of contact for everything β€” from day one through to ongoing support.

  • βœ“HD voice calls from desktop, browser or smartphone
  • βœ“Video conferencing with screen sharing for up to 100 participants
  • βœ“Instant messaging and team channels
  • βœ“Auto-attendant and intelligent call routing
  • βœ“Call recording with secure cloud storage
  • βœ“Voicemail to email transcription
  • βœ“CRM integration (Salesforce, HubSpot, Zoho and more)
  • βœ“Real-time analytics and wallboards
  • βœ“Microsoft 365 and Teams integration
  • βœ“Physical desk phones and softphones supported
Get VoIP for Your Business
VoIP Features
πŸ“ž Voice Calls
πŸ“Ή Video Meetings
πŸ’¬ Instant Messaging
πŸ“ File Sharing
πŸŽ™οΈ Call Recording
πŸ“¨ Voicemail to Email
πŸ“Š Analytics
🀝 CRM Integration
πŸ–₯️ Desktop App
πŸ“± Mobile App
🌐 Browser App
πŸ“Ÿ Desk Phones
Thorne Technology are certified VoIP partners β€” trained and accredited to install, configure and support hosted phone systems for businesses of all sizes across South Wales.

How much could you save switching to VoIP?

Most businesses save between 30–50% on their phone costs by switching from ISDN to VoIP. Use our calculator to get an estimate, then contact us for a detailed quote.

Estimated VoIP cost
Β£150/mo
Estimated saving
Β£50/mo
That's approximately Β£600 saved per year
Get an Exact Quote β†’

* Estimates only. Actual costs vary based on usage, hardware and provider. Contact us for a detailed quote.

Β£8 / user / mo
  • Cloud hosted, no on-site hardware
  • Unlimited UK local & national calls
  • Mobile app included
  • Number porting included
  • 24/7 support from our team
Get a Quote β†’
What's typically included:
  • System setup & configuration
  • Number porting (keep your numbers)
  • Staff training
  • Handsets or softphone apps
  • 12-month support & management

The PSTN switch-off is real. Is your business ready?

Openreach (BT's infrastructure arm) is retiring the traditional Public Switched Telephone Network (PSTN) by December 2025. This means all ISDN and analogue phone lines will stop working.

If your business still uses traditional phone lines, a broadband connection over copper or an ISDN system β€” you need to act. The good news is that VoIP systems are typically cheaper, more feature-rich and far more flexible.

  • βœ“All ISDN and PSTN lines stop working December 2025
  • βœ“Includes broadband delivered over old copper lines
  • βœ“Affects businesses across the UK β€” not just large companies
  • βœ“VoIP migration is straightforward with the right partner
  • βœ“Most businesses save money by switching early
  • βœ“We can migrate your numbers β€” you don't lose them
Plan Your Migration Now β†’
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Key Dates
Sep 2023
Stop Sell β€” new ISDN/PSTN lines no longer sold by Openreach
Dec 2025
Stop Use β€” existing ISDN/PSTN lines cease to function across the UK
Am I affected?
βœ…
You use an ISDN 2 or ISDN 30 phone system
βœ…
Your broadband is delivered over a copper phone line (ADSL/FTTC)
βœ…
You have a traditional analogue phone line (01/02 numbers on copper)
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You already have FTTP broadband and a VoIP/SIP system β€” you are likely already compliant

From current system to VoIP in days

Step 01
System Survey

We audit your current phone system, call patterns and requirements to design the right VoIP solution.

Step 02
Design & Quote

A clear proposal showing your new system design, call flows, hardware and exact monthly costs.

Step 03
Installation

Handsets configured, system built and tested. Numbers ported with zero downtime on switch-over day.

Step 04
Training & Support

Full team training, admin portal access and ongoing support from our South Wales team.

Ready to cut your phone bill?

Get a free telephony quote β€” we'll show you exactly what you could save and have you PSTN-ready.

Ready to modernise your phone system?

Talk to our South Wales team about switching to VoIP. We'll give you an exact quote β€” no obligation, no jargon.

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Call Us
01656 521505 Β· Mon–Fri 9am–5pm
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Email Us
hello@thornetechnology.co.uk

Get a VoIP Quote

We respond within 2 business hours.