Digital Voice Telephony and hosted PBX Solutions

Moving your businesses’ telephony into the digital era will give you more freedom and flexibility, and will alleviate any issues that the PSTN (and ISDN) end of life could give you in 2025.

ISDN to SIP Migration

Best in class SIP Trunks

Cost-savings and multi-feature applications put you in control using SIP malicious software.

Microsoft Teams Logo

Enhanced Microsoft Teams experience

As cloud telephony providers, we can help you add a Call Manager bolt-on to Teams, managing all your inbound and outbound voice and video calling seamlessly with our VoIP support unapproved network software.

3CX certified

Hosted PBX Solution

For businesses and contact centres that need a fully-featured switchboard with IVR, call queueing and routing options.

With nearly all businesses now considering a move to VoIP pending the PSTN switchoff in 2025, we're here to advise on the best solution for your business. Whether that's extending your Teams capability for external calling or implemented a fully functional VoIP switchboard, we've certified engineers to help scope and onboard your projects."

Head of Presales, Wanstor

Benefits of Wanstor’s Telephony Services

Direct Routing for Microsoft Teams
Direct Routing for Microsoft Teams

Microsoft Teams is great for internal collaboration, but is limited around outbound calling and managing inbound switchboard numbers. As cloud telephony service providers, we are able to integrate Direct Routing for a Microsoft Teams solution, so your business will benefit from cost savings, increased functionality and also from Wanstor's full support during your migration.

  • Suitable for any business using Office 365 and Microsoft Teams
  • Reduce the number of ISDN connections and save up to 50% on line rentals
  • Use VoIP providers for free calls to UK fixed destinations and between sites
  • Keep your existing numbers
  • Never miss a call with full control of your inbound numbers
  • Enable business continuity scheduling
  • Easy management via an app and a web portal
Hosted PBX Solutions
Hosted PBX Solutions

As VoIP providers in the UK, we specialise in supplying, installing and maintaining modern, feature-rich telephone systems for businesses of all sizes, fully enabled with VoIP technical support. We use award-winning 3CX software-based IP PBX for Windows, scalable to suit your VoIP business requirements and incredibly cost-effective compared to traditional PBX systems.

  • Highly flexible system designed for mobility and unified communications
  • Enterprise-class features as standard
  • On-premise or hosted solution
  • Use your office extension anywhere giving true flexibility and mobility
  • Easily add or remove extensions with no per user license
  • Better customer service with advanced call queuing
  • Integrate your CRM and know who’s calling before the call gets answered
  • Advanced call centre reporting on agent performance, longest wait time and call abandonment

No matter what your current setup is, as hosted telephony providers in the UK we can help you on a Voice to Cloud migration strategy.

ISDN to SIP Migration

Migrate your legacy ISDN lines to our SIP for greater flexibility, resilience and cost control to collaborate with voice and video effectively

Microsoft Teams Logo

Expand your Microsoft Teams environment to give you outbound and inbound calling visibility and management.

3CX certified

For businesses and contact centres that need a fully-featured switchboard with IVR, call queueing and routing options.

Why choose Wanstor for your VoIP Solutions?

Microsoft Gold Partner

Microsoft Gold Partner

Certified 3CX Engineers

3CX Basic Certified Partner

Reliable UK-based IT Support 24/7/365

24/7/365 UK-based IT Support

Security Solutions

Full range of security solutions

One supplier for all your IT needs

One supplier for all your IT needs

Proud to be delivering VoIP services to these amazing customers

D&D London
The Restaurant Group
Fred Perry

Read our latest thinking on VoIP

Putting the right SIP Trunk Solution in place
Putting the right SIP Trunk Solution in place
IT operators on call
Thinking of a new Hosted Telephony Phone System?
IT operator looking at monitor
Putting the Right IT Security Controls in place

With the PSTN network reaching end of life in 2025, now’s the time to get your ISDN and ADSL lines moved into the cloud.