List of Gamma Horizon Hosted Phone System Customers
Gamma Telecom
Kings House Kings Road West,
Newbury, RG14 5BY,
United Kingdom
Newbury, RG14 5BY,
United Kingdom
44 33 3014-0000
Communications
602
$301M
Since 2010, our global team of researchers has been studying Gamma Horizon Hosted Phone System customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased Gamma Horizon Hosted Phone System for PBX, VoiP and Phone Systems from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using Gamma Horizon Hosted Phone System for PBX, VoiP and Phone Systems include: Metro Bank, a United Kingdom based Banking and Financial Services organisation with 4040 employees and revenues of $669.0 million, Swan Housing Group, a United Kingdom based Construction and Real Estate organisation with 430 employees and revenues of $230.0 million, BES Utilities, a United Kingdom based Utilities organisation with 254 employees and revenues of $96.0 million, Keystone Law Group, a United Kingdom based Professional Services organisation with 63 employees and revenues of $90.0 million, Barrhead Travel, a United Kingdom based Professional Services organisation with 900 employees and revenues of $44.0 million and many others.
Contact us if you need a completed and verified list of companies using Gamma Horizon Hosted Phone System, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
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| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
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Barrhead Travel | Professional Services | 900 | $44M | United Kingdom | Gamma Telecom | Gamma Horizon Hosted Phone System | PBX, VoiP and Phone Systems | 2016 | n/a |
In 2016, Barrhead Travel implemented the Gamma Horizon Hosted Phone System. The Gamma Horizon Hosted Phone System was deployed as a hosted PBX solution, classified under PBX, VoiP and Phone Systems, to centralize voice communications across the organization.
Implementation activity focused on Horizon Phone system installation and system management, including handset provisioning, centralized call routing and voicemail administration, and configuration of multi-branch dial plans. Administration work leveraged internal scripting and operational tooling to support provisioning and ongoing management through the Horizon management console.
The deployment operated alongside Barrhead Travel's branch network estate of 33 locations and the homeworker population, administered by the IT team that managed Cisco Meraki MX appliances and Meraki WiFi access points. Operational coverage included branch voice connectivity, homeworker telephony, and support for the companys managed travel partners, aligning the PBX, VoiP and Phone Systems solution with existing network infrastructure and support processes.
Governance and runbook responsibilities were held by an eight person IT department with a Senior IT Systems Engineer as the escalation point, who managed the helpdesk, backup operations, asset management rollouts and an internal knowledge base. Weekly director level reports and structured rollout processes were part of operational oversight and ongoing system management.
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BES Utilities | Utilities | 254 | $96M | United Kingdom | Gamma Telecom | Gamma Horizon Hosted Phone System | PBX, VoiP and Phone Systems | 2018 | n/a |
In 2018, BES Utilities implemented Gamma Horizon Hosted Phone System in the PBX, VoiP and Phone Systems category to centralize telephony for office and field workers across the BES Group. The deployment was positioned to provide hosted PBX services for BES Utilities while coexisting with the companys broader IT estate supporting Smart Choice Metering, Card Saver and Commercial Power.
Gamma Horizon Hosted Phone System was configured to deliver standard hosted telephony capabilities, including centralized call routing, voicemail, auto attendant, handset provisioning, hunt groups and soft client support for mobile and desktop endpoints. Configuration work included provisioning IP handsets and soft clients, aligning extension and directory structures with corporate user accounts, and applying role based dial plans consistent with utility operations and field workforce connectivity needs.
The Horizon deployment was implemented into an environment managed with Windows Server 2012 and 2016, Active Directory, Microsoft Exchange and Office 365, and operated on a corporate network managed by UniFi networking equipment. Operational integration and support workflows referenced in operational notes included device lifecycle management for field iOS and Android devices via MMD Scalefusion, asset discovery via Lansweeper, and co‑operation with the existing Citrix VDI footprint for office endpoint access.
Operational governance for the Gamma Horizon Hosted Phone System relied on the companys IT support model, including incident management through Freshservice tickets, remote troubleshooting with TeamViewer and AnyDesk, and internal IT training for office and field staff. Day to day administration and maintenance responsibilities were embedded in BES Groups IT function, covering handset provisioning, network quality monitoring, license and spare parts management, and escalation procedures for third party cloud and ISP related incidents.
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Keystone Law Group | Professional Services | 63 | $90M | United Kingdom | Gamma Telecom | Gamma Horizon Hosted Phone System | PBX, VoiP and Phone Systems | 2020 | n/a |
In 2020 Keystone Law Group deployed the Gamma Horizon Hosted Phone System as its primary telephony platform, information the firm publishes on its website. The deployment is aligned with the firm’s UK professional services footprint and is categorized under PBX, VoiP and Phone Systems, providing a cloud hosted telephony layer for an organization of approximately 63 employees.
Keystone Law Group’s implementation centers on a hosted PBX architecture using the Gamma Horizon Hosted Phone System with centralized management and multi‑device support, including desk handsets and soft clients for mobile and remote users. Functional capabilities implemented include call routing and auto attendant, hunt groups and call queues, voicemail and unified messaging, handset provisioning and user administration via the vendor portal, and basic call reporting and monitoring. Operational coverage spans firmwide business functions such as reception and client intake, fee earner communications, and administrative teams, with governance delivered through centralized admin roles and phone provisioning workflows to standardize call handling and access controls.
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Metro Bank | Banking and Financial Services | 4040 | $669M | United Kingdom | Gamma Telecom | Gamma Horizon Hosted Phone System | PBX, VoiP and Phone Systems | 2019 | n/a |
In 2019 Metro Bank deployed Gamma Horizon Hosted Phone System to strengthen its PBX, VoiP and Phone Systems estate and support a customer service led growth strategy. The deployment was driven by a need for resilient, scalable telephony to support contact centres and back office communications as the bank planned expansion through 2020.
The implementation centered on SIP trunking and hosted telephony services, integrating Gamma Horizon Hosted Phone System with an existing Interactive Intelligence hosted contact centre and a Lync based back office environment. Functional capabilities emphasized SIP trunk connectivity, session management, and native SIP interoperability so calls could route directly to service platforms without intermediary hardware, supporting contact centre call lifecycle handling and quicker access to customer records.
Operational scope covered contact centre agents and back office infrastructure across Metro Bank, with the solution scoped for business continuity and scalability. The deployment reduced on-premises telephony footprint, allowing infrastructure downsizing in back office systems and simplifying ongoing telephony maintenance while keeping customer facing voice channels resilient.
Governance was led by the Infrastructure Delivery team, with implementation decisions aligned to contact centre efficiency and continuity objectives articulated by Infrastructure Delivery Team Leader Luis Aguiar. Reported outcomes included tighter integration between telephony and service systems, faster retrieval of customer files for colleagues, a smaller back office infrastructure footprint, and direct cost savings from reduced maintenance of hardware.
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Swan Housing Group | Construction and Real Estate | 430 | $230M | United Kingdom | Gamma Telecom | Gamma Horizon Hosted Phone System | PBX, VoiP and Phone Systems | 2017 | n/a |
In 2017 Swan Housing Group implemented the Gamma Horizon Hosted Phone System as part of a broader Digital Transformation, aligning telephony modernization with cloud working initiatives and Office 365 migration. The Gamma Horizon Hosted Phone System was deployed to address PBX, VoiP and Phone Systems needs across the organisation and to provide unified communications functionality alongside existing Microsoft collaboration tools.
The implementation included cloud telephony provisioning with SIP trunking, hosted call control, and unified communications features such as voicemail and call routing integrated into corporate collaboration workflows. Configuration work focused on provisioning user profiles, dial plans, and SIP endpoints to support desktop phones and soft clients, while ensuring compatibility with Microsoft Teams and Skype components already being introduced through the O365 programme.
Integrations were coordinated with the wider cloud estate, including Azure hosted services, Office 365 workloads, virtual desktop infrastructure, and the MPLS network fabric. The roll out spanned multiple sites and was supported by Meraki wifi upgrades and virtual desktop provisioning to ensure consistent voice quality and user experience across Swan Housing Group locations.
Project governance used a hybrid Waterfall and Agile SCRUM approach, with documentation such as business cases, PID, FRD and SoW, and active management of RAID logs. A SIAM style vendor management model was exercised to coordinate third party telephony and infrastructure suppliers, supported by war room teams for cutover days, CAB meetings, board level Agile training, and creation of communications, training and managed service transition plans including SLA, ORR and BRR arrangements.
Operational handover included GDPR adherence, managed cutover into the live environment, decommissioning of superseded on premise telephony components, and training for support desk staff and end users to drive adoption. The Gamma Horizon Hosted Phone System therefore sits within Swan Housing Group PBX, VoiP and Phone Systems, supporting telephony, unified communications and contact workflows across the organisation.
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| Logo | Company | Industry | Employees | Revenue | Country | Evaluated | ||
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FAQ - APPS RUN THE WORLD Gamma Horizon Hosted Phone System Coverage
Gamma Horizon Hosted Phone System is a PBX, VoiP and Phone Systems solution from Gamma Telecom.
Companies worldwide use Gamma Horizon Hosted Phone System, from small firms to large enterprises across 21+ industries.
Organizations such as Metro Bank, Swan Housing Group, BES Utilities, Keystone Law Group and Barrhead Travel are recorded users of
Gamma Horizon Hosted Phone System for PBX, VoiP and Phone Systems.
Companies using Gamma Horizon Hosted Phone System are most concentrated in Banking and Financial Services, Construction and Real Estate and Utilities, with adoption spanning over 21 industries.
Companies using Gamma Horizon Hosted Phone System are most concentrated in United Kingdom, with adoption tracked across 195 countries worldwide. This global distribution highlights the popularity of Gamma Horizon Hosted Phone System across Americas, EMEA, and APAC.
Companies using Gamma Horizon Hosted Phone System range from small businesses with 0-100 employees - 20%, to mid-sized firms with 101-1,000 employees - 60%, large organizations with 1,001-10,000 employees - 20%, and global enterprises with 10,000+ employees - 0%.
Customers of Gamma Horizon Hosted Phone System include firms across all revenue levels — from $0-100M, to $101M-$1B, $1B-$10B, and $10B+ global corporations.
Contact APPS RUN THE WORLD to access the full verified Gamma Horizon Hosted Phone System customer database with detailed Firmographics such as industry, geography, revenue, and employee breakdowns as well as key decision makers in charge of PBX, VoiP and Phone Systems.