We’ve been granted UK patent GB2605125, protecting an Emergency Voice Communication (EVC) system architecture that enables loop-wired and radially-wired outstations to operate simultaneously on a single system. In practical terms, it removes a design constraint that has shaped Emergency Voice Communication System (EVCS) projects for years, where installers have had to choose one connection method or the other and then live with the compromises that choice brings.
The grant came from the UK Intellectual Property Office on 11 March 2026, following an application we filed in March 2021. It currently applies in the UK, with applications pending in other territories.
Why loop and radial on one EVCS matters
EVCS design is rarely neat. Real buildings bring constraints: risers that are full, routes that change mid-project, phased refurbishments where parts of the building remain occupied, and estates where one block looks nothing like the next. Traditionally, EVCS projects have had to commit to loop wiring or radial wiring for the system and then force the rest of the design to conform.
The architecture protected by GB2605125 changes that by allowing both approaches to coexist within the same system. That means an installer can use two-core, non-polarity dependent cabling in a loop where it makes sense, then use radial connections where access, containment routes or project phasing demand it, without stepping outside a single EVCS platform.
What the patent covers, in plain terms
The patented design uses termination points with interchangeable zone boards to determine whether connected outstations operate as part of a loop or as radial devices. Installers can configure outstations for either method, supporting mixed-topology designs that can adapt to site conditions and change over time.
That flexibility has practical consequences beyond wiring choice. It can reduce the number of different parts that need to be held as spares, because the same outstation types work across loop and radial sections of a system. It also supports more straightforward adaptation as buildings are extended, reconfigured or refurbished, because designers can select the most appropriate wiring method for each area without breaking the overall system approach.
Built into OmniCALL
OmniCALL is built on this patented architecture. We developed OmniCALL, our current EVCS platform, to support installations of varying size and predictable behaviour across a wide range of project types, and this dual-connection capability sits at the centre of that intent.
Nick Baldwin, Sales & Marketing Director at Baldwin Boxall, puts it plainly: the patent protects “the ability to combine loop and radial outstations on one EVCS without asking installers to choose a single wiring topology for an entire site”, helping specifiers design around the building rather than around a product constraint.
A practical step forward for specifiers and installers
A good EVCS should behave consistently, be clear to commission, and remain supportable years after handover. The value of this architecture is that it helps keep projects practical, even when buildings are not. It gives designers more freedom to respond to the realities of routes and risers, and it gives installers a straightforward way to deliver the right connection method in the right place without introducing unnecessary complexity.
That’s what we focus on: solving the problems that appear on live sites and building those solutions into a platform that can be specified with confidence.
If you’d like to understand how OmniCALL supports mixed loop and radial deployments on real projects, our team can talk through typical design scenarios and what this architecture makes possible in practice.
