Collaborative Working
Cloud Calling
Modern voice. Delivered your way.
Cloud Calling from Trustmarque replaces legacy telephony with a flexible, scalable, and cost-effective voice solution, built for the hybrid workplace. Whether you're migrating from PSTN or consolidating multiple systems, we help you modernise with minimal disruption and maximum value.
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38%
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average savings from consolidating voice platforms.
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50%
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faster response times with integrated cloud telephony.
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30%
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reduction in operational costs by modernising hybrid infrastructure.
Benefits
Why Cloud Calling?
Because it enables your teams to communicate from anywhere, on any device, while reducing costs and complexity.
Cloud-first voice
Replace outdated PBX systems with a modern, cloud-based calling platform.
Carrier-grade reliability
Delivered via our Cisco-powered, validated Cloud Calling service.
Flexible deployment
Integrate with Microsoft Teams, Webex, or your preferred UC platform.
End-to-end support
From number porting to call routing, analytics, and user adoption.
Public sector ready
Proven success with councils, NHS trusts, and education providers.

Built on Cisco. Delivered by Trustmarque.
Maximising Value, Minimising Costs
As a Cisco Powered and validated Cloud Calling provider, we deliver enterprise-grade voice services with the flexibility and control your organisation needs. Our partnership with Gamma ensures resilient infrastructure and seamless integration with your wider collaboration strategy.
Trustmarque helped Doncaster Council optimise our Webex Cloud Calling deployment by aligning new features with user needs, improving adoption, and planning for future capability rollouts, all as part of a structured customer success plan.
Global Technology Partners
Trusted Cloud Calling Partnerships
At Trustmarque, we collaborate with industry-leading cloud calling providers to deliver secure, scalable, and future-ready voice solutions. Our partnerships with Microsoft, Cisco (Webex Calling), and Gamma ensure that your organisation benefits from best-in-class technology, seamless integration, and expert support.
Whether you're migrating from legacy PBX systems or optimising your current cloud telephony, our cloud calling ecosystem empowers you to modernise communications, reduce costs, and enhance user experience, across every location and device.