Gamma is a leading provider of high-quality voice and data services. They provide flexible, scalable and resilient solutions for your business.

Unified Communications

Gamma solutions are a perfect fit for SMEs, Mid Size and Enterprise businesses. Whether that is a telephone system, or connectivity you require, their comprehensive range of services offer reliability and scalability to meet your requirements.

Blackstar Solutions are a Gamma Technical Alliance Partner and will consult with you to choose the most suited solutions for your business. Our technical engineers are experienced in implementing and supporting the range of services provided by Gamma. These services include Horizon, Collaborate, SIP and Data.


Horizon is a complete hosted communication service from Gamma that combines handsets from several manufacturers, an easy-to-use web interface, Gamma’s trademark network resilience and services, and the power of the world’s leading call controller platform from Broadsoft.

Horizon takes the burden away from your IT team. Local administrators manage and configure the system according to your organisation’s needs. Employees can then manage their calls easily and effectively, thereby maximising individual productivity.

Informational Video


Collaborate is a bolt-on to the Horizon hosted PBX service which offers services such as instant messaging, presence, voice, video, desktop/application sharing and document sharing.

It enables users to access business communications and collaboration services from their favourite devices, wherever they are. Collaborate is suitable for any size business looking to improve productivity.

The future of work is changing

Read our eBook on how the office environment is changing and how to create a modern workplace.

SIP Trunking & Call Management

SIP Trunking

SIP trunking is rapidly replacing ISDN services for inbound and outbound voice calls. Gamma is the UK’s leading SIP trunks provider. Their SIP trunks connect your site’s PBX directly into the Gamma network via an internet connection to carry and terminate your calls across the public telephone network.

Gamma SIP Trunks provide a highly-flexible alternative to ISDN and are compatible with all the leading IP PBX brands in the UK market, giving you peace of mind that your PBX hardware works with the network service.

Compared to ISDN, Gamma SIP Trunks are cheaper on a per-channel basis and more flexible in terms of what telephone numbers you can have and the locations in which you can have them. In addition, they are quicker to install and offer a robust business continuity service that ensures your business never loses any calls. Any business with a PBX can switch to Gamma’s SIP trunking service and immediately benefit from a more flexible, less expensive and more resilient phone service.

SIP Trunk Call Manager

SIP Trunk Call Manager offers a powerful business continuity solution, giving you the ability to consolidate all your numbers onto a single platform and never miss a call.

Cloud-based call control allows you to automatically direct calls to a destination you define such as a colleague, mobile, hunt group or call queue. Combined with all the features and benefits of Gamma SIP Trunks, including our call bundles and the only fraud management tool that protects you and your customers by enabling them to set spend limits, SIP Trunk Call Manager is a hugely powerful business tool.


PhoneLine+ has been designed to replace your traditional landline service using VoIP technology to deliver voice calls over the broadband network, all at a highly competitive price. PhoneLine+ can be assessed on a range of devices including computers, tablets, mobile phones, and IP handsets.

It supports all the key features expected of a traditional telephone line including voicemail, call divert and call hold, but without paying more, PhoneLine+ provides extra features designed to make your life easier.


Contact us to arrange a consultation with one of our specialists or want to ask us a question about our Gamma product range.


Business Broadband

With more and more applications moving from customer premises and into the cloud, it’s essential you can connect your business and workforce reliably and at high speeds. Gamma’s full range of business Broadband services includes Fibre Broadband using Fibre to the Cabinet (FTTC), Converged Broadband and Assured Broadband dedicated to our voice services.

Gamma’s business Broadband is designed for offices and remote worker. Contact us to find out the availability, cost and speeds in your area.



Ethernet services can help reduce the cost of private networking while improving the quality of service and support. Gamma offers scalability and flexibility unavailable from legacy services. And Gamma delivers dedicated, secure, uncontended business-class connections for all your voice and data traffic.

Gamma Fibre Ethernet is ideal for organisations that wish to converge voice and data on a single connection. Connect to Gamma’s extensive next-generation network and receive dedicated, low latency and high availability services, with full resilience, supported by robust, end-to-end SLAs.

Choose between Fibre Ethernet, EFM (Ethernet in the First Mile) orFTTC Ethernet.

SoGEA Broadband

SoGEA stands for Single Order Generic Ethernet Access which delivers the same performance and data rates as FTTC broadband.

Due to British Telecom switching off the existing telephone network completely in 2025, the current Wholesale Line Rental network will cease to exist. SoGEA uses the existing fibre/copper network, which makes it available to more than 90% of premises across the United Kingdom.

What our customers say

“The team at Blackstar helped us understand what we need as a growing business in the technology sector and in turn understood our budgets. Their bulletproof solution has saved me endless sleepless nights and days of frustration!”
Jon Payne

Blackstar Solutions are a trusted Gamma partner,  providing flexible, scalable and resilient solutions for your business. Contact us for a quote or book a demo on 0333 123 2 123, alternatively email us on [email protected].