A VoIP telephone system (Voice over Internet Protocol) lets you make phone calls over the internet rather than through traditional copper lines. It’s more than a cost saver — it offers flexibility, scalability, and features that legacy systems simply can’t match.
In this post, we’ll cover:
- What a VoIP telephone system is and how it works
- Benefits of switching
- Key features and criteria
- How to evaluate VoIP telephone providers in the UK
- Why Digi Toolbox is well‑positioned to deliver a robust VoIP telephone solution
What Is a VoIP Telephone System?
A VoIP telephone system converts your voice into digital data packets and sends them over the internet. On the receiving end, these packets are converted back into voice. Because it uses your existing internet connection, you don’t need dedicated phone lines.
Components typically include:
- Softphones or apps (on a computer or mobile device)
- IP desk phones (hardware phones designed for VoIP)
- Session Initiation Protocol (SIP) trunks or hosted PBX systems
- VoIP gateway devices (to connect legacy equipment, if needed)
VoIP technology also enables advanced integrations and analytics, helping businesses better manage communications. It supports CRM tools, call tracking software, and call data reporting — all of which are vital for modern customer service and sales operations. Additionally, many VoIP platforms offer APIs and third-party plug-ins to extend functionality.
Why Choose a VoIP Telephone System?
Here are the main advantages:
- Lower costs — Especially for long distance or international calls
- Scalability & flexibility — Easily add or remove lines/users
- Mobility — Use the system from anywhere (office, home, mobile)
- Advanced features — IVR, call queues, voicemail to email, recording
- Unified communications — Integrate voice with chat, video, and CRM
- Redundancy & reliability — Failover options in case of downtime
Businesses adopting VoIP telephone systems also benefit from improved productivity. With seamless integrations and user-friendly interfaces, employees can manage communications from one unified platform. Additionally, the ease of deployment makes VoIP ideal for scaling businesses, branch offices, and companies embracing hybrid or remote work models.
Key Features to Look for in a VoIP Telephone Service
When evaluating VoIP telephone providers, make sure they offer:
- Call routing & forwarding
- Auto‑attendant / IVR menus
- Call queuing & hunt groups
- Voicemail to email / transcriptions
- Call recording & analytics
- Integration with business tools / CRM
- Number porting (keep your current phone numbers)
- Emergency calling support (999 in the UK)
- Security & encryption
Some providers also offer mobile apps, call whispering for supervisors, real-time dashboards, and AI-based transcription tools — all of which can give businesses a competitive edge.
How to Choose a VoIP Telephone Provider in the UK
Here’s a step‑by‑step guide:
- Assess your needs
- Number of users / devices
- Remote or hybrid workforce
- Call volumes and geographic coverage
- Check your internet & network
- Ensure your bandwidth, latency, and jitter are within acceptable VoIP thresholds
- Implement QoS / VLANs for voice traffic
- Shortlist providers
- Request demos or trials
- Ask for references from UK businesses of similar size
- Test features & resilience
- Test IVRs, transfers, forwarding, and voicemail
- Simulate outages to confirm failover mechanisms
- Review contracts & support
- Transparent pricing (hardware, porting, licence fees)
- UK‑based support and SLA guarantees
In addition, businesses should consider how a provider handles future upgrades, platform integrations, and data portability. Choosing a VoIP partner with a roadmap for innovation ensures your system remains cutting-edge as your organisation grows.
Why Digi Toolbox Offers a Top‑Tier VoIP Telephone Solution
We position our telephony services to meet the practical needs of UK businesses. Here’s what sets our VoIP telephone offering apart:
- End‑to‑end managed service — We handle the consultation, migration, training, and support
- Hybrid working ready — Use desk phones, softphones, or mobile apps — seamlessly
- UK‑based support team — Local expertise and direct accountability
- Transparent pricing & bundling — No hidden costs; can be bundled with IT, broadband, or digital services
- Reliable infrastructure with failover — Built for resilience and continuity
Our solutions are tailored for SMEs and growing companies, offering reliable connectivity, advanced call features, and future-ready telephony built around your workflow. Whether you’re replacing a legacy PBX or building out a remote-first team, Digi Toolbox delivers UK-optimised VoIP telephone solutions you can depend on.
Learn more via our telephony services page.
Would you like to find out more?
Get in touch with us to discuss your requirements or book a meeting with a specialist at a time that works for you.
Phone: 01489 297070
Email: hello@digitoolbox.com
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