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Gamma Communications
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Who are Gamma Communications?
Gamma Communications is one of the UK’s most established business communications companies, founded in 2001 and headquartered and listed in London. Gamma has built a reputation as a trusted provider in the business telecoms space.
Their primary focus is being a cloud voice and business VoIP system provider, helping businesses of all sizes move away from traditional phone lines and onto more flexible, internet-based communications.
Rather than selling direct to end users, Gamma works through a network of trusted channel partners and telecoms resellers.
What services do Gamma Communications offer?
Gamma’s core focus is business voice and communications technology. While they have a broad portfolio, their key services for businesses are cloud-based calling, connectivity and keeping teams connected wherever they are. Here are Gamma’s key business services:
Hosted VoIP & Cloud Phone Systems
Gamma’s Horizon platform is one of the most widely used hosted phone systems, giving businesses a fully cloud-based alternative to traditional desk phones and on-site hardware. It’s a practical solution for any business exploring business VoIP phone systems for the first time or looking to upgrade an existing setup.
SIP Trunking
For businesses that already have a phone system in place, Gamma is one of the UK’s longest-established SIP trunking providers. SIP trunking upgrades traditional phone systems to use an internet-based connection, preparing businesses for the PSTN switch off.
Voice Enablement & Microsoft Teams Calling
Gamma can voice-enable a range of platforms, including Microsoft Teams, allowing users to make and receive external calls directly from the tools they already use day to day. This removes the need for a separate phone system and makes Teams a fully functional business phone system.
Business Mobile & SIM
Alongside its voice products, Gamma provides business mobile and business SIM only deals, with centrally managed plans that suit companies of all sizes. This is particularly useful for businesses wanting a single provider across their fixed and mobile communications.
Broadband & Leased Line Connectivity
Reliable connectivity underpins everything Gamma does. They supply a range of options from standard full fibre business broadband through to dedicated leased line broadband, ensuring businesses have the right foundation in place to run cloud voice and VoIP services without interruption.
Inbound Call Management
Gamma offers inbound call management tools that give businesses control over how calls are routed, queued and handled. Features like hunt groups, auto attendants and VoIP features such as call recording make it easier to manage high call volumes and deliver a consistent experience to callers.
How to contact Gamma Communications
Here are the different ways to get in touch with the Gamma Communications support team:
Gamma Communications contact number
You can call the Gamma Communications team on 0333 014 0000. They are available 24/7, 365 days a year. When prompted, select the option that applies to you. New to Gamma, press 1. Channel Partner, press 2. Direct customer, press 3.
Gamma Communications customer portal
Gamma customers can manage their accounts, view invoices, and access billing information through the online customer portal.
Gamma Communications email
If you’d prefer to get in touch by email, you can contact the Gamma team at info@gamma.co.uk. For general support queries, email response times are typically within 24 hours.
Gamma Communications considerations
Gamma is a well-established name in business communications, but as with any provider, there are a few things worth understanding before you sign up.
| Consideration | What to know |
|---|---|
| Reseller pricing | Gamma sells through channel partners rather than direct, so the price you pay depends on who you buy through. Margins vary significantly between resellers, so it is always worth comparing what is actually included before committing. |
| Support structure | Depending on how you purchase, your day-to-day support may come from a reseller rather than Gamma directly. This works well with the right partner in place, but it is worth asking about response times and how faults are escalated before you sign. |
| Contract terms | As with most telecoms providers, contracts typically include auto-renewal clauses. Make sure you are clear on notice periods to avoid being rolled into another term unintentionally. |
| Market alternatives | Gamma is one of several strong options in the business VoIP space. It is worth taking the time to compare providers on price, support and features rather than defaulting to the first option presented. |
Who Gamma Communications services are designed for
Gamma Communications is a purely business-focused provider. Below are the types of businesses and organisations that typically use their services:
| Business type | Why Gamma suits them |
|---|---|
| SMEs (10-250 employees) | Looking for a reliable cloud phone system without managing it all in-house |
| Larger enterprises | Need a more tailored approach to voice, connectivity and managed services |
| Public sector | Local authorities, NHS trusts and education providers with specific compliance needs |
| Businesses still on legacy systems | Moving away from traditional phone lines ahead of the PSTN switch off |
Gamma Communications reviews
Gamma Communications currently has a Trustpilot score of 2.7 based on 69 reviews. It is worth knowing that a large portion of their negative reviews are from members of the public reporting nuisance calls. Gamma has clarified that these are the result of their number ranges being spoofed by third parties, not Gamma itself.
Filtering those out, the genuine business customer feedback is more balanced.
Pros
- Partner experience: Resellers and channel partners consistently highlight Gamma’s professionalism, technical support and the quality of their management platform.
- Reliability: Business customers generally report solid, dependable service once set up, particularly for a business VoIP phone system.
- Innovation: Partners note that Gamma continues to develop its product range and keeps pace with the market.
Cons
- Support delays: Some direct customers report that resolving issues can take longer than expected, particularly when reseller support is weak.
- Flexibility: As a larger provider, Gamma may feel less flexible than smaller telecoms businesses.
Gamma Communications – FAQs
Below, we answer the most commonly asked questions about Gamma Communications.
What is the Gamma Horizon phone system?
Horizon is Gamma’s flagship hosted phone system, delivered entirely through the cloud. It gives businesses a full-featured phone system without any on-site hardware, accessible from desk phones, mobiles or computers. It is one of the most widely used business VoIP phone systems in the UK.
Is Gamma a telecom provider or a reseller?
Gamma is a telecoms provider and network operator. They build and manage their own software, but primarily distribute their services through a network of approved channel partners and resellers rather than selling directly to most businesses.
Can businesses buy Gamma services directly?
Yes, businesses can contact Gamma’s sales team directly through their website. However, the majority of Gamma’s services are delivered through a network of approved channel partners and resellers, who can often provide a more tailored service, local support and competitive pricing.
What is Gamma SIP trunking?
SIP trunking is a way of replacing traditional phone lines with an internet-based connection. Gamma is one of the UK’s longest-established SIP trunking providers and a popular choice for businesses that want to keep their existing phone system while modernising how their calls are delivered.
How much does Gamma VoIP cost?
Pricing varies depending on which reseller or partner you purchase through and what you choose from your setup. Each partner will have their own packaging and margins, and the features you select will affect the overall cost. For a clearer picture of what to expect, take a look at our business VoIP costs page.