Unified Communications
Communications should feel effortless for your teams and dependable for your business. We craft bespoke, open-source platforms that bring calling, messaging, meetings, and collaboration into one coherent experience - built around how you work, not how a vendor sells licences.
Expect plain-speaking engineers, transparent decisions, and a solution that you can evolve with confidence - whether you're supporting hybrid teams, multiple sites, or demanding operational environments.
How Unified Communications Works
Unified Communications is an approach to business communication that consolidates voice calling, video meetings, messaging, and collaboration tools into a single, integrated system. Rather than operating multiple standalone platforms, businesses use one environment where communication services interoperate and share data.
A Unified Communications platform is typically built from components such as telephony servers, messaging systems, conferencing services, and file collaboration tools. These components are integrated using standard technologies such as SIP, WebRTC, and APIs to enable real-time communication, secure data exchange, and consistent user experiences across devices and locations.
Businesses adopt Unified Communications to simplify communication infrastructure, reduce operational complexity, and improve reliability. Centralised management makes it easier to maintain, secure, and scale communication services as business needs change, while open standards help avoid dependency on a single vendor.
If your priority is optimising voice communication with advanced call routing and telephony features, explore our Bespoke VoIP Solutions.
Platforms & Technologies We Work With
Non-exhaustive - depends on requirements.
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Voice & Telephony
FreeSWITCH, Kamailio, OpenSIPS, drachtio
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Messaging & Presence
Mattermost, XMPP, Matrix
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Video & Conferencing
BigBlueButton
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File Sharing & Collaboration
Nextcloud
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APIs & Integration
REST APIs, WebSockets, SIP, WebRTC
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Security & Access Control
TLS/SRTP, Identity Management, Role-Based Access Control (RBAC)
The Reality of Modern Business Comms
As businesses adopt hybrid work, multi-site operations, and fast-changing customer expectations, communication stacks often grow in an unplanned way. The result is inconsistent user experiences, duplicated administration, and fragile integrations that create delays, reduce visibility, and increase risk.
We design and engineer a single communications foundation using open standards (SIP, WebRTC and APIs), with identity, policy, and governance built in from day one. That means fewer moving parts, clearer ownership, and a platform that can evolve safely as your teams, workflows, and compliance needs change.
Fragmented Tooling
Multiple platforms split conversations and slow decisions. We consolidate channels into one governed environment with shared identity and consistent policies.
Hybrid Work Friction
Distance and device switching introduce friction and missed context. We deliver a consistent experience across locations with presence, calling, and meetings working together.
Growth Pain
Legacy designs struggle with new users, sites, and call volumes. We build modular architecture that scales predictably with capacity planning and resilient routing.
Risk & Regulation
More systems increase the chance of misconfiguration and data exposure. We apply least-privilege access, encryption, and auditable controls aligned to your obligations.
Built Around the Way Your Industry Works
Unified Communications works best when it reflects how your industry runs day to day. We build platforms around workflows, compliance demands, and scaling needs - helping teams respond faster, stay aligned, and maintain reliable communication across industries.
Telecoms
Improve coordination between network operations, support teams, and management. Enable faster incident response, shift handovers, and cross-team collaboration without fragmented systems.
Healthcare
Secure, role-based communication between clinicians, nurses, and administrators supports care coordination, on-call workflows, and regulatory compliance.
Education
Virtual classrooms, staff collaboration, and student communication work through integrated video, messaging, and document sharing across departments.
Logistics
Better coordination between warehouses, drivers, dispatch teams, and customer service with real-time voice and messaging workflows.
Manufacturing
Connect factory floors, maintenance teams, suppliers, and management to reduce delays and speed up problem-solving.
Corporate Enterprises
Centralise internal collaboration and client communication with tools that integrate into CRM, ERP, and project management systems.
What You Get in Your Unified Communications Platform
Our unified communications platform helps businesses streamline collaboration, reduce reliance on multiple tools, and keep teams connected securely - whether they're in the office, remote, or on the move.
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Reliable Voice & Video
High-quality calling and conferencing using FreeSWITCH and Kamailio for consistent performance at scale. -
Secure Team Messaging
Real-time collaboration via Mattermost and XMPP, with controlled access and message integrity. -
Centralised File Collaboration
Simplified document sharing and version control through Nextcloud, keeping information accessible and up to date. -
Scalable Conferencing
Virtual meetings powered by BigBlueButton that grow with your business without licensing restrictions. -
Workflow Integrations
Custom connections between communications and CRM, ERP, and internal systems. -
Enterprise Security
Strong access controls, encryption, and compliance measures tailored to your risk profile.
From Discovery to Delivery
We create Unified Communications platforms that match how your teams work. Our approach combines structured planning, open-source expertise, and careful integration to deliver reliable, scalable systems.
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Current-State Discovery
We begin by reviewing how your teams communicate today - including user groups, call paths, collaboration habits, security requirements, and any links to platforms such as CRM or ERP. This step highlights constraints, improvement opportunities, and the capabilities the solution must deliver in day-to-day use.
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Blueprint & Technical Design
From the discovery findings, we create a clear architecture that maps out how calling, messaging, video, and file services will work together. Component choices are made with longevity in mind - keeping the design modular, reducing unnecessary vendor lock-in, and allowing the platform to scale as your needs grow.
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Build, Configure & Integrate
Our team implements and connects the chosen components into a single, cohesive platform aligned with your workflows. We configure routing logic, messaging structures, conferencing behaviour, identity integration, and access controls, adding tailored features where needed so the system supports how your users actually operate.
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Roll-out & Continuous Support
We roll out in controlled phases to keep disruption low, validating performance and user experience along the way. You receive practical documentation and onboarding support to drive adoption, with structured support options available to maintain stability, monitor performance, and continuously refine the platform as your business evolves.
Why Choose OnyxSis?
Open-Source First, Always
We are an open-source business at heart, and we bring that mindset to every engagement we take on. You get clear options, honest trade-offs, and technology choices made for longevity rather than lock-in.
Engineering-Led Delivery
We are engineers who take ownership, communicate plainly, and stay close to the detail from discovery through to production. That focus helps us deliver consistently, even when requirements are complex and timelines are tight.
Evidence in Production
Our work is proven in demanding environments where communications has to perform under pressure and at scale. We publish real outcomes through case studies, including measurable operational improvements.
In our Contact Centre Operations Hub work for a leading UK telecoms provider, we helped deliver a 42% increase in first-call resolution and an 11% rise in NPS within 12 months. That outcome came from unifying critical operational insight and improving how teams act on live information.
Support That Stays With You
After go-live, we stay engaged to keep your platform reliable, secure, and aligned as your business evolves.
Our support is transparent - so you can see what's happening, why it matters, and what we recommend next - backed by SLA-Based Technical Support and Dedicated Support Hours.
When priorities shift, we adapt with you and keep improving what you have, as a long-term partner ready to roll up our sleeves.
Make Every Channel Work Together
Calling, meetings, messaging, and files should share context - not compete for attention. We integrate your communications into one governed environment with consistent policies and secure access.
