Onecom VoIP Review 2026: Pricing, Features & Best Fit Quick answer
Onecom offers business VoIP phone systems designed for UK SMEs that want a managed, all-in-one communications provider, combining cloud phone systems, SIP trunking, connectivity, and support under a single contract, and while their pricing is typically quote-based, you will get a bespoke package suited to your business’s exact needs.
We think Onecom is a strong choice if you want VoIP bundled with broadband, mobile, or IT services, and value account management and UK-based support. It may be less suitable if you’re looking for instant online pricing or a low-cost, self-serve VoIP platform.
For VoIP pricing and quotes, click here.
Key takeaways (2026)
Best suited to UK SMEs wanting VoIP bundled with wider telecoms services
Quote-based pricing tailored to business size, usage, and setup
Offers cloud phone systems, SIP trunks, and Teams calling
Strong focus on account management and managed rollout
Less ideal for micro-businesses wanting DIY or ultra-cheap VoIP
Contents
What is Onecom VoIP?
Onecom VoIP Pricing
Who Onecom is best for
Benefits of Onecom
Downsides of Onecom
How does Onecom compare to alternatives?
How do we work?
Transparent, impartial, and data‑driven reviews made by a team of expert humans, never AI generated – here’s exactly how Compare Your Business Costs helps you find the best deals from trusted UK providers: click here
Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: January 2026
Onecom VoIP is a business phone service that routes calls over the internet instead of traditional phone lines. Businesses typically choose Onecom when they want a fully managed VoIP solution, rather than sourcing phones, connectivity, and support from multiple providers.
You can generally choose between:
Hosted/cloud phone systems – no on-site PBX required
SIP trunks – for businesses upgrading an existing PBX
Microsoft Teams calling – for organisations standardising on Teams
In addition to VoIP, Onecom offer:
Typical pricing ranges (guide)
Because Onecom solutions are tailored, pricing is usually provided following a short consultation.
Product Typical pricing model What affects cost most
Hosted VoIP phone system
Per user/per month (quote-based)
Users, call plans, features, handset needs
SIP trunks
Per channel / per month
Channel count, resilience, call volumes
Setup & onboarding
One-off (sometimes included)
Porting, sites, complexity, training
Our rule of thumb:
👉 Want a like-for-like comparison?
Onecom is usually a good fit if you:
Want VoIP, broadband, and mobile under one supplier
Prefer a managed rollout with ongoing account support
Have 10–250 users or multiple locations
Don’t want to self-manage VoIP platforms and integrations
Who Onecom is not ideal for You may want an alternative if you:
Only need 1–3 VoIP users with basic calling
Want instant online pricing and self-setup
Are primarily shopping on lowest monthly cost
Benefits of Onecom VoIP
Managed cloud phone systems for UK businesses
SIP trunking for PBX modernisation
Microsoft Teams calling options available
UK-based support and account management
Ability to bundle VoIP with connectivity and mobile services
Downsides to consider
Pricing is not always publicly listed
Less flexible for businesses wanting DIY VoIP platforms
Feature depth depends on selected package and integrations
Onecom vs budget VoIP providers:
Onecom offers stronger onboarding and support; budget providers may be cheaper but more hands-on.
Onecom vs enterprise UCaaS platforms:
Simpler and more SME-friendly; enterprise platforms may offer deeper analytics and omnichannel tools.
Onecom vs Gradwell:
Gradwell focuses heavily on VoIP and SIP products, while Onecom positions VoIP as part of a broader telecoms bundle.
Buying guide: choosing the right Onecom VoIP setup Replacing a landline system?
A hosted cloud phone system is usually the simplest option.
Already using a PBX?
SIP trunks allow you to modernise without replacing existing hardware.
Concerned about call quality? Then we think you should prioritise:
Business-grade broadband or leased lines
QoS-enabled routers
Wired connections for high-usage desks
FAQs Is Onecom a VoIP provider?
Yes. Onecom provides business VoIP services including hosted phone systems, SIP trunks, and Teams calling.
How much does Onecom VoIP cost?
Pricing is typically quote-based and depends on users, features, call plans, and whether VoIP is bundled with other services.
Does Onecom support number porting?
Yes, number porting is usually included as part of a managed migration.
Can Onecom VoIP support remote teams?
Yes. Cloud VoIP supports mobile and desktop apps for hybrid and remote working.
Is Onecom suitable for multi-site businesses?
Yes. Onecom is often chosen by multi-site SMEs that want centralised billing and support.
How to Purc hase Onecom VoIP
Our Verdict on Onecom VoIP Onecom VoIP is a strong option for UK SMEs that want a managed phone system as part of a wider communications bundle and because of that, we think they are particularly well suited to growing businesses that value reliability, support, and having a single point of contact for telecoms.
If you’re looking for a low-cost, self-serve VoIP platform, there are BUT
Related VoIP guides & comparisons
Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
