Gamma Horizon

About

Gamma Horizon is ranked #126 of 174 in business phone systems on Inferse, made by Gamma Horizon (Newbury, Berkshire, UK). It runs on Android, iOS, Web. There is no free plan.

Compared on business phone systems

Business numbers

multiplegammagroup.co

Call routing

customgammagroup.co

Desktop and mobile apps

Yesgammagroup.co

Facts

Product

Horizon is a cloud-based, customizable business phone and communications system.gammagroup.co · 9 Oct 2026

Audience

Gamma says Horizon is used by businesses of all sizes and is trusted by over 60,000 UK companies.gammagroup.co · 9 Oct 2026

Hybrid work

Users can access fixed and mobile capabilities through a portal and app while working at home or on the move.gammagroup.co · 9 Oct 2026

Call handling

Features include call routing, call queuing, call recording, and a receptionist console for managing calls and multiple sites.gammagroup.co · 9 Oct 2026

CRM integrations

Gamma says Horizon is compatible with over 200 CRM packages and names Bullhorn, Salesforce, Zoho, Microsoft Dynamics, and Zendesk among its integrations.gammagroup.co · 9 Oct 2026

Collaboration

Horizon with Webex combines voice, video meetings, messaging, and file sharing, and Gamma describes AI features including real-time transcription and intelligent call routing.gammagroup.co · 9 Oct 2026

Analytics

The Horizon with Akixi analytics service offers more than 400 sets of historic and real-time statistics and scales from two to 10,000 users.gammagroup.co · 9 Oct 2026

Reliability

Gamma describes Horizon as operating across multiple data centres with call switching between centres and backup call routing during site connectivity disruptions.gammagroup.co · 9 Oct 2026

Uptime

The product page states an SLA of 99.95% for Horizon and separately says Gamma's own network has 99.999% uptime.gammagroup.co · 9 Oct 2026

Security

Gamma says Horizon uses its next-generation IP network, built-in security for users including remote workers, and managed next-generation firewalls.gammagroup.co · 9 Oct 2026

Existing phones

Gamma says existing IP-enabled phones can be integrated with Horizon.gammagroup.co · 9 Oct 2026

Support

Gamma advertises UK-based support teams offering 24/7 first-line support for Horizon; its support page lists a 24/7 support desk.gammagroup.co · 9 Oct 2026

Accessibility

Listed accessibility features include visual call alerts, adjustable volume, hearing-aid-compatible handsets, TTY support, tactile keys, and auto-answer.gammagroup.co · 9 Oct 2026

Company

Gamma Communications says it sells exclusively to businesses and public sector organisations, with core markets in the UK and Germany and additional presence in Spain and Benelux.gammagroup.co · 9 Oct 2026

Company

Founded

2001gammagroup.co · 28 Sept 2026

Headquarters

Newbury, Berkshire, United Kingdomgammagroup.co · 28 Sept 2026

Where it ranks on Inferse

• Best Business Phone Systems in 2026#126 of 174
• Best SIP Trunking Providers in 2026#28 of 30

Sources

• gammagroup.co/products/horizon-cloud-phone-system/· checked 9 Oct 2026
• gammagroup.co/company/· checked 9 Oct 2026
• gammagroup.co/products/sip-trunking-call-management/· checked 28 Sept 2026