Business Telephone Systems

Find a phone solution that’s right for your business.

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Give us a call to start making your technology easier and more enjoyable.

0800 160 1111


Talk anytime, anywhere on any device

Streamline your business communications so you can connect with customers and stay on top of business matters from any location, with a scalable phone solution built for your business.

Whether your teams are at the office, out on the road, working from home or on site, our solutions provide the intelligent telephone system they need to communicate and work more efficiently.

Our business phone solutions:

VoIP for business

A solution that places all your voice calls through your internet connection, providing you with a flexible, fast and reliable service that lets you take calls from anywhere.

More on business VoIP phone systems

Contact centre

Let your remote working agents confidently handle customer conversations, across all contact channels with one single view of queries to offer superior service.

More on contact centres

SIP trunking

Get the convenience of a virtual line through your existing PBX system and enjoy the convenience of flexible and reliable voice calls.

More on SIP trunking solutions

Business mobile

Tailored business-only mobile plans that give you the minutes, messages and data that you need. Enjoy the freedom of mobile and a business-exclusive network that doesn’t slow you down.

More on business mobile

All the advanced features you need in your phone system

We’ll develop a scalable phone system to meet your business needs, now and in the future.

Intelligent call handling

From standard features like voicemail and call transfer and forwarding to intelligent hunt group and queue management, we will design the call management features you need in your business phone system.

Seamless Microsoft Teams integration

Fully integrate your communications solution with your business’ MS Teams workspace you can access from any softphone device and any location through a cloud / hosted PBX platform or SIP.

In-depth statistics and call reporting

Get improved visibility across your organisation’s communications ecosystem so you can optimise both resource allocation and customer experience, with call recording and detailed insights and analytics on bespoke, easy-to-use dashboards.

Unified communications

Unify every element of your business telephony, from direct rout calling, video conferencing, email and texting to CRM integration, into a single, intelligent and future-proof communications system that improves your business’ productivity.

Optimise your business conversations, deliver exceptional customer service.

We provide an end-to-end professional phone service with a range of handsets and headsets and custom-built apps and platforms to meet your business needs.

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The right business phone system will help you:

  • Be proactive with customers Respond quicker and more promptly than ever before with phone systems that will help you to answer and receive calls from anywhere and with a speed and quality that keeps your customers happy.
  • Bring your teams together Create a communication infrastructure that unites a small office team or can span across office-based, remote and home workers, keeping them all in-sync and capable of working together in unison.
  • Scale to your needs when you’re ready For businesses that have future growth in mind, you’ll find phone systems that are easy to scale and cost-effective too, with a phone solution that’s ready to grow as soon as you are.
  • Embrace remote and flexible working A phone solution that’s powered by the cloud or mobile gives you and your workforce options when it comes to how you work. Have the freedom to support your workers and better prepare them with the tools they need for remote working.
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Making the switch from ISDN to modern tech

ISDN technology will be switched off in 2025 with stop-sell happening in 2023. If you’re one of the million UK businesses still using it, you need a plan to move. Learn more about your options for switching over to a modern broadband solution.

Learn more
cloud phone system

One provider for your voice and connectivity solutions

Enjoy the best of both worlds by combining super fast connectivity with a cloud phone system that keeps you in full control. Stay online, connected and in-touch with your customers, with high quality calls and an ever-present business continuity plan.

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Create a flexible work environment

Bring all elements of communications into one collaborative suite of solutions with unified communications. Integrate your business email, conferencing, desktop sharing, video calling, mobile, instant messaging and allow your team to be more productive.

Unified communications

Building quality phone solutions for business

We go the extra mile at Windsor Telecom and help you to take advantage of a phone system that helps you to get the most out of your solution.


“The price and service at Windsor Telecom set them apart right from the start. Every call and query are picked up and answered immediately, day or night, and the training they provided to ensure we saw value from our new VoIP phone system from day one was superb.”

~ Buckinghamshire Building Society

We provide telecommunications solutions for industries and organisations across the UK:

Our phone solutions are scalable to any business size and robust enough for any environment. From medium and small business phone systems to enterprise-level multiline and IP PBX systems, we develop specialised phone services and customised call functionality for a wide range of sectors, including:




Call centres



Public sector


NPO & Charity

Fire and security company gets cloud telephony

A new cloud-based phone solution in just 7 days

Our customer, a large fire and security company, approached us to discuss a new office phone system that they needed fully operational for over 100 users within two weeks, we rose to the challenge and delivered in just 7 days.


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