Modern IP Telephony & VoIP Solutions for UK Businesses
Switchshop designs, deploys and supports business VoIP systems and IP telephony solutions across London, Hounslow and the wider UK. From cloud-based phone systems and SIP trunking to Microsoft Teams integration and contact centre platforms, we deliver flexible, scalable and cost-effective communications built around your business.
Business communication is undergoing its biggest transformation in decades. The UK ISDN switch-off is underway with full retirement by January 2027, hybrid working has permanently changed how teams connect, and customers now expect to reach businesses across voice, chat, email and more. For many UK organisations, their current phone system was never built to meet these demands, and the cost of keeping it running is growing while its capability falls further behind.
Switchshop helps UK businesses navigate this transition with confidence. Whether you are migrating away from ISDN, replacing an end-of-life PBX, integrating calling capability into Microsoft Teams, or building a multi-channel contact centre, our certified VoIP engineers deliver solutions that are right-sized, properly designed and supported for the long term.
Unlike providers who lead with a product, we lead with your network. Voice is unforgiving of poor infrastructure, latency, jitter and packet loss directly degrade call quality. Every Switchshop VoIP deployment begins with a network readiness assessment, ensuring your infrastructure can carry voice traffic reliably before a single handset is installed. It is a step many providers skip, and the most common reason VoIP deployments underperform.
We are UK-based and experienced across every major sector, which means our recommendation is always based on what is right for your business, not what is easiest for us to sell.
Traditional ISDN lines are being phased out across the UK by 2027. VoIP provides a future-proof alternative.
Key advantages of VoIP over ISDN:
Flexible phone systems designed for modern businesses. • Cloud-based VoIP systems with minimal on-site hardware • On-premises IP PBX for full control • Hybrid deployments combining cloud and on-site infrastructure • HD voice quality and advanced call handling • Voicemail to email and mobile integration • Scalable systems that grow with your business
Replace ISDN lines with cost-effective SIP connectivity. • Reduced call costs across UK and international destinations • Flexible capacity based on demand • Business continuity and disaster recovery options • Integration with existing phone systems • Number porting and retention
Turn Microsoft Teams into a complete business phone system. • Direct Routing for external calling via Teams • No need for expensive Microsoft Calling Plans • Keep your existing numbers and call flows • Seamless integration with Microsoft 365
Bring all communication channels into one platform. • Voice, video and messaging in one system • Presence and instant messaging for faster collaboration • Mobile and desktop access from anywhere • Integration with business applications
Deliver better customer service with intelligent call handling. • Multi-channel support: voice, email, chat and social • Skills-based routing and IVR systems • Call recording and reporting tools • CRM integration for improved customer experience
Equip your team with the right tools. • Desktop IP phones and wireless handsets • Conference phones for meeting rooms • Softphones for mobile and remote workers • Headset integration for contact centres
Your VoIP system is only as reliable as your network. We assess your infrastructure before deployment to ensure optimal performance: • Bandwidth and traffic analysis • Latency, jitter and packet loss testing • QoS configuration recommendations • Security and resilience checks
Connect your phone system to your business tools. • CRM and ERP integrations • Microsoft Teams API and Direct Routing • Workflow automation • Custom development for bespoke requirements
We deliver VoIP and IP telephony solutions across:
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