Explore PBX phone systems for large businesses in the United Kingdom


Feature-packed enterprise phone systems for large teams.

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A trusted provider of large business phone systems in the United Kingdom

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Established in 1985, United Telecoms emerged to meet the e demand for reliable and affordable business telephone systems.

Today, we are a provider of business PBX solutions, VoIP & related services across the United Kingdom.

Greater London:City of London, Hounslow, Barking and Dagenham, Islington, Barnet, Kensington and Chelsea, Bexley, Kingston upon Thames, Brent, Lambeth, Bromley, Lewisham, Camden, Merton Croydon, Newham, Ealing, Redbridge, Enfield, Richmond upon Thames, Greenwich, Southwark, Hackney, Sutton, Hammersmith and Fulham, Tower Hamlets, Haringey, Waltham Forest, Harrow, Wandsworth, Havering, Westminster and Hillingdon.

We provide on-premise and cloud PBX solutions tailored to suit businesses of all sizes, from small local firms to large enterprises spanning across counties in the United Kingdom.

Contact us to help you find the best phone system to elevate your business communications. Contact our national office using the number below, or click on the “chat now” button located at the bottom right corner of this page for live assistance from a professional.

Contact us 033 1630 0516

What is a large business phone system?

A phone system that caters for the needs of large teams, typically exceeding 100 users, with more unique communication needs.

Our enterprise-level analogue, hybrid and cloud PBX (private branch exchange) systems come packed with a variety of features and capabilities like call forwarding and routing, conference calls, voicemail, and call recording, all aimed at enhancing your communication and overall productivity.

As a large company, tailoring your business phone system to align with your specific needs is very important. Get in touch with us to get assistance with identifying the ideal business phone system for your organisation.

Key features of phone systems for large businesses

Large-scale enterprises require a PBX phone system capable of streamlining a web of company-wide communications.

To optimise internal communications and client communications, implementing an analogue, hybrid or cloud PBX phone system that supports a range of features is important.

We provide business telephone systems that include many basic and high-end features designed to increase productivity and efficiency.

Let’s dive deeper into these key features.

Manage communications for a large business with on-premise, hybrid or cloud PBX

Every enterprise has its unique interactions and needs, requiring a customisable PBX business phone system. We work with you to craft a tailored solution, considering your distinct needs to deliver the perfect PBX phone system.

There are several choices available for large businesses, each presenting its own capabilities, costs, and prerequisites for installation.

Whether you’re in the market for a traditional phone system, IP PBX, or cloud PBX phone system, we can provide the ideal solution to manage your business communications. We provide expert advice and end-to-end implementation using premium hardware from top-tier brands like Yeastar, Yealink, NEC, and more.

Let’s delve into the PBX system options for large enterprises, specifically on-premise PBX systems (analogue and IP PBX) and cloud-hosted PBX systems.

On-premise PBX and hybrid IP PBX systems for large businesses

On-site phone systems can either be analogue PBX systems that use traditional phone lines, or hybrid PBX systems that utilise both phone lines and an IP network.

We’re here to help with everything from fresh installations to reinstallations, upgrades, and even downscaling of on-premise analogue PBX systems and IP PBX systems

Contact us for expert advice on choosing and setting up the ideal phone system for your large business.

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Cloud PBX phone system for large businesses

Cloud PBX, also referred to as hosted PBX, provides businesses with a fully-fledged enterprise-grade phone system that is managed and accessed via online portals or softphone applications.

Cloud PBX systems utilise a business’s internet connection/network, cutting costs related to line rentals, intricate installation of physical hardware, call charges, and more.

Hosted PBX phone systems are also packed with features, providing a suite of standard and advanced functionalities for managing voice communications.

Contact us for professional guidance on implementing the most suitable hosted PBX phone system for a large-scale enterprise.

Cloud-hosted PBX systems

PBX purchase options for large businesses

At United Telecoms, we offer flexible payment options for large-scale business phone systems. You can either purchase your PBX phone system outright via EFT or opt for a fixed-term rental.

PBX rentals and upfront purchases for large businesses

For an outright purchase, you’ll own the hardware immediately and could save on the overall system cost.

However, we often suggest renting, especially given the technical nature of large PABX phone systems.

With PBX rental terms, you’ll have a predictable monthly expense and always access to the best solution for your needs. Rental terms can range from 12 to 60 months, and we also offer short-term options.

To discuss the best option for your enterprise phone system needs, please contact our expert team.

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Requirements for PBX phone system installation

The installation requirements for different PBX phone systems vary depending on the chosen type: traditional PBX, IP PBX, or Cloud PBX. To better understand the installation requirements for PBX phone systems, refer to our PBX installation page or contact us for assistance.

Necessary for traditional and hybrid PBX phone systems. The number of lines required depends on the desired number of users.

Analog PBX and hybrid PBX phone systems require a PBX main unit and other essential hardware components.

Properly connecting new or existing desk phones and base stations for cordless handsets to your PBX phone system relies on physical cabling that is set up within your premises. Physical cabling requirements may vary if you plan to install a cloud-based phone solution.

Location plays a vital role, influencing the choice of phone system and network solution that best suits your communication needs. Implementing a VoIP phone system typically requires a Fibre internet connection to provide reliable and high-quality communication.

Existing PBX handsets may be compatible with your system. Alternatively, you can purchase new handsets, such as analogue, digital, or IP phones, to effectively manage your communications. Handsets and peripherals must be selected based on their compatibility with your system and their ability to execute required functionalities.

Have You Asked These Questions?

  • Are you looking to install a phone system at a single location or across multiple sites?
  • Will you need features such as Telephone Management Reporting?
  • Do you require more advanced call centre functionality?
  • Have you already set up broadband or fibre connectivity if you plan to use a VoIP or cloud-based phone system for video calling?
  • How many users would require connectivity for BYOD devices or mobile office setup?
  • Do you need a hosted solution or an on-site phone system?

We’re here to assist you in finding the best phone system that aligns with your organisation’s needs. Contact us today to receive expert advice from our team.

Frequently asked questions about on-premise PABX systems for large businesses and enterprises

Finding the right enterprise VoIP provider in the UK requires considering factors like cost, reliability, scalability, and customer service.

United Telecoms offers United Voice, a versatile VoIP solution designed to meet your business communication needs effectively. It’s compatible with your current VoIP-enabled PBX or we can provide you with a comprehensive modern phone system.

United Voice offers flexible call packages, seamless integration with networks including Vodafone and EE, and excellent scalability. Switching to VoIP with United Voice means lower call rates, remote accessibility, and simplified maintenance.

Don’t compromise on your business communication – contact us today to get United Voice, the right enterprise VoIP solution for your business.

Got questions? Contact our experts today.


We service the following locations across London and the United Kingdom

Greater London: City of London, Hounslow, Barking and Dagenham, Islington, Barnet, Kensington and Chelsea, Bexley, Kingston upon Thames, Brent, Lambeth, Bromley, Lewisham, Camden, Merton Croydon, Newham, Ealing, Redbridge, Enfield, Richmond upon Thames, Greenwich, Southwark, Hackney, Sutton, Hammersmith and Fulham, Tower Hamlets, Haringey, Waltham Forest, Harrow, Wandsworth, Havering, Westminster and Hillingdon.

What Our Customers Say

“Once we approved the installations we were kept up to date daily with the levels of progress on our various sites and were very impressed with the final installation”

Spear Properties


Get In Touch

London Office

2 Osborne Way
KT19 8GR
United Kingdom (UK)

Tel: 033 1630 0516
Tel: 020 3399 8011

Email: info@united-telecoms.co.uk

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