Enterprise voice
Business phone systems for UK organisations, including Hosted 3CX, Soft-Switch PBX and Microsoft Teams calling, with numbers, migration and expert support.
Phone systems for business
A business phone system brings together the numbers, users and call handling an organisation needs to communicate professionally. It can combine inbound and outbound calling, extensions, call routing, auto attendants, queues, voicemail, reporting, applications and compatible desk phones.
Modern business telephone systems increasingly use hosted, cloud and IP technology instead of a traditional fixed-line PBX. That gives office, hybrid and remote users more ways to work and can bring several locations into one managed environment.
I.T Communications designs phone systems for small, medium and larger organisations. We provide a choice of platforms and can bring together the phone system, voice connectivity, business numbers, migration and ongoing UK support. For a deeper explanation of the underlying technology and deployment choices, explore our Business VoIP phone systems guide.
Find the right phone systemChoosing the right platform
We recommend the architecture that fits the organisation rather than forcing every customer onto one product. User experience, call handling, integrations, sites, reporting and support all influence the decision.
A sophisticated hosted communications platform for organisations that need flexible user applications and more advanced call handling. Hosted 3CX supports queues, reporting, CRM and integration options, multi-site and hybrid working, and appropriate contact-centre requirements.
A straightforward managed business phone system for organisations that want hosted extensions, business numbers, applications and scalable concurrent-call capacity without operating an on-site PBX.
Businesses already heavily invested in Microsoft 365 may be able to use Teams for external business calling. Suitable licensing and voice routing can connect business telephone numbers and inbound and outbound calls to the Teams environment.
A practical starting point
This comparison helps identify the most relevant route. Final suitability depends on detailed requirements, licensing, compatible devices and the agreed service design.
| Solution | Best suited to | Desktop and mobile working | Desk phones | Call handling and reporting | Microsoft 365 suitability | Managed service |
|---|---|---|---|---|---|---|
| Hosted 3CX | Growing, multi-site and more complex call-handling environments | Desktop and mobile applications | Compatible devices supported | Queues, routing, reporting and integration options | Integration options depend on edition and design | Yes |
| Soft-Switch PBX | Organisations wanting a straightforward hosted platform and scalable capacity | Desktop and remote-working options | Compatible devices supported | Business call routing and service features | Not the primary use case | Yes |
| Microsoft Teams Calling | Organisations already centred on Microsoft 365 and Teams | Microsoft Teams desktop and mobile applications | Depends on the selected Teams-compatible design | Calling features depend on Microsoft licensing and configuration | Primary use case | Voice connectivity and routing managed by I.T Communications |
Need help comparing the options? Tell us how your organisation handles calls today and what needs to improve.
Talk to an expertDesigned around the organisation
The right business telephone system depends on how people work and how calls need to be handled—not simply the number of extensions.
Small business phone systems should be easy to operate while presenting calls professionally. A straightforward hosted platform can provide company numbers, extensions, routing, voicemail and applications without an on-site PBX.
As users and call volumes increase, capacity, queues, reporting, devices and integrations become more important. The platform should support planned growth without making everyday administration unnecessarily complicated.
One system can connect several offices and remote workers through shared numbering, extensions and call-routing policies. Connectivity and resilience should be considered at each location.
Higher call volumes may require more detailed queues, reporting, integrations, supervision and support ownership. Discovery should establish concurrent-call capacity and customer-service workflows before a platform is selected.
Buying criteria
Office phone systems vary considerably. Prioritise the capabilities your organisation genuinely needs and confirm which are included, licensed or supported on the selected platform.
Call routing, auto attendants, queues, voicemail and opening-hours rules should reflect the real customer journey.
Consider desk phones, headsets, desktop and mobile applications, remote users and how people move between locations.
Establish the reporting detail required and whether supported CRM or business-system integrations are needed.
Plan existing number transfer, new number requirements, resilience and alternative routing before cutover.
Size the service around users, simultaneous calls, queues, sites and expected growth rather than extension count alone.
Confirm who is responsible for the platform, voice connectivity, numbers, configuration, faults and ongoing changes.
A controlled migration
Changing a business phone system involves more than selecting software. We plan existing numbers, call flows, connectivity, hardware, users, applications, testing, cutover and appropriate fallback arrangements together.
Plan your phone systemUnderstand users, sites, peak calls, existing numbers, equipment and customer-service priorities.
Define routing, resilience, devices, integrations, connectivity and the appropriate platform.
Configure, test and coordinate number porting and cutover around business continuity.
Maintain clear ownership for the platform, connectivity and controlled changes after launch.
Number continuity
Eligible existing UK geographic and non-geographic numbers can often be retained when changing phone systems. We check portability, gather the required account information and coordinate the transfer rather than making an absolute promise before the range has been assessed.
New locations or teams can also use additional UK business telephone numbers. Learn how we manage business number porting as part of a controlled migration.
Phones, apps and headsets
A modern business phone system may use compatible desk phones, desktop applications, mobile applications and headsets. The right mix depends on the platform, role, working location and whether existing equipment is compatible.
Browse the current VoIP hardware catalogue for phones, headsets and accessories without turning the system decision into a hardware-only purchase.
One accountable UK provider
Bring the platform, telephone numbers, SIP connectivity, suitable business connectivity, migration and ongoing support into one coordinated service.
Choose between multiple platforms after reviewing call flows, capacity, users, integrations, resilience and future growth.
Connect the system through suitable business SIP connectivity and, where required, managed business broadband.
Our platform, carrier connectivity and number-routing experience reduce hand-offs between separate suppliers. Explore the network behind our services.
Keep number porting, testing, cutover, configuration changes and ongoing technical assistance under clear ownership.
Business phone system questions
Useful answers for organisations comparing business phone systems, costs, equipment and migration.
The best fit depends on users, sites, call volumes, routing, reporting, integrations, devices and support requirements. Hosted 3CX, Soft-Switch PBX and Microsoft Teams calling suit different operating models, so discovery should come before a recommendation.
Cost depends on the platform, users or concurrent-call capacity, licences, telephone numbers, hardware, connectivity, migration and support. Review our Hosted 3CX pricing and Soft-Switch pricing, or request a tailored comparison.
A small business commonly needs professional numbers, extensions, routing, voicemail and reliable support without unnecessary complexity. Applications, desk phones, queues and reporting should be selected according to how calls are actually handled.
In many cases, yes. We check number portability and coordinate eligible number transfers as part of the migration plan.
Not always. We review device models, firmware, condition and platform compatibility before recommending reuse or replacement. Applications and headsets may also suit some users.
A business phone system is the complete service used to manage users, numbers and calls. Business VoIP describes voice carried over IP and the different ways it can be deployed. See our Business VoIP guide for the technology comparison.
Yes. Suitable hosted platforms can provide desktop or mobile applications and centrally managed extensions for remote and hybrid users, subject to connectivity, security and platform configuration.
Yes. A properly designed system can connect multiple sites through shared numbers, extensions and routing policies. Capacity, connectivity, resilience and local operating requirements should be reviewed for each site.
Timescales depend on platform design, user and device numbers, number-porting lead times, integrations, testing and site readiness. We agree the migration plan and cutover sequence once those dependencies are understood.
Start a conversation
Speak to an experienced UK specialist about the right approach for your organisation.