Gamma
Working smarter, together
Gamma is a leading provider of Unified Communications as a Service (UCaaS) across the UK, Netherlands, Spain, and Germany, supplying communication solutions via their extensive network of trusted channel partners.
With a combination of network investment, a digital-first approach, and in-house development skills, Gamma has a comprehensive portfolio of communications services. And a significant amount of intellectual property. This has given them a name for disrupting the market with innovative and market-leading cloud-based services, such as SIP Trunking and Hosted PBX in the UK.
Why Gamma
Gamma offers a range of Unified Communications, Mobile and Connectivity services, providing robust and secure end-to-end business communication and collaboration solutions that enable organisations to easily collaborate internally whilst also providing a better customer experience.
Gamma’s four key customer pillars
Flexible solutions
Gamma’s products, pricing and services can be adjusted to your changing needs.
Collaborative culture
Drawing on our joint expertise in business communications, Trustmarque and Gamma will work with you to achieve the right solution with ongoing support.
Connected communications
Sophisticated, dependable and secure products and services designed to help your organisation succeed.
End-to-end control
End-to-end control and technical integration of your network services for ‘Always on’ unified communications. Gives your people the freedom to work wherever, whenever.
Trustmarque and Gamma
Trustmarque is one of the few select partners awarded Gamma Platinum Partner status in the UK. This is awarded by a range of criteria that includes revenue, product commitments, customer service levels, innovation and technical expertise. The Platinum Partner status strengthens our relationship with Gamma and gives our customers full confidence with the products and services they provide, provision and support.

Case study
Kent County Council transition to Microsoft Teams Direct Routing from Gamma and Trustmarque
Kent County Council was using both the online and on-premise versions of Skype for Business, with approximately 5,000 users on each platform. The solution was approaching end of life at the end of July 2021 the Council knew they would have to quickly migrate all existing users to an alternative telephony solution. A decision had already been taken to migrate to Cloud Telephony in order to experience the commercial and operational benefit of removing any on-premise equipment
Discover how Trustmarque’s Enterprise Connectivity team and Kent County Council migrated 10,000 users to a simplified Teams telephony solution: Read the full case study
“Migrating 5,000 users quickly and seamlessly was no mean feat. But Gamma and Trustmarque worked so well together, we felt that we were in safe hands. The project was executed quickly and efficiently, our telephony solutions are now simplified, and we can operate within a fixed budget.”
Stuart Cockett, Interim Head of Kent Public Services Network
Microsoft Teams Operator Connect
With over 15 years’ experience enabling voice solutions for Microsoft, Gamma understands business requirements and can help you get the most out of your Microsoft Teams environment. Their relationship with Microsoft includes networking, provisioning, management, reporting API’s and Teams portal integration, providing a simple and reliable way to enable calling
Gamma is part of Operator Connect, an operator-managed service from Microsoft designed to give you seamless and integrated carrier-grade PSTN calling to your Microsoft Teams environment.
Gamma’s Operator Connect streamlines calling capabilities for your Teams users, enhancing productivity and maximising value your organisation gets from your Microsoft Teams environment.

Key Features
Operator Connect provides smooth and unified calling for your business via Microsoft Teams.