Sophia Antipolis, France - June 25, 2026 - Since 2018, Hub One, the telecom operator and systems integrator subsidiary of the ADP Group, has been offering its business customers the Smart Call unified communications and collaboration solution.
This offering is built on the Enreach UP platform and includes cloud telephony, collaboration tools, CRM integration, and soon AI-enhanced services such as virtual assistants and call transcription.
Beyond marketing this solution, Hub One also operates its own communications infrastructure across the Paris Charles de Gaulle and Paris Orly airport platforms. These sites are classified as public-access facilities (ERP – Établissement Recevant du Public), where every communication line contributes to operational continuity, safety, security, and service quality. It is this critical infrastructure that the operator chose to modernise using Enreach technology. Through this project, Enreach positions itself as the technology enabler for a leading operator in highly critical and constrained environments.
Modernising ADP’s network infrastructure without impacting operations.
The project involved modernising ADP’s communications infrastructure by migrating 7,000 critical analog lines, previously carried over high-density MSAN VoIP gateways, to a modern IP-based architecture. This transformation was driven by two key factors: the anticipated obsolescence of first-generation IP technologies combined with the emergence of new business requirements, and the rising maintenance costs and growing complexity associated with maintaining the existing infrastructure. The challenge was significant: transition to IP, optimise costs, and introduce new capabilities without compromising airport operations. In an airport environment, telephony is an integral part of the security chain. Service continuity is not merely a performance metric, it is an operational necessity.
“Given the technical constraints and the critical nature of certain lines, we needed a local partner capable of managing the complexity of the project,” said David Debert, Product Manager at Hub One.
The migration was carried out in a phased manner, in close collaboration between Hub One and Enreach teams, across two high-availability data centers (Orly and CDG) with local and remote redundancy. Each cutover was carefully planned, tested, and validated to ensure it remained transparent for end users. Although initially scheduled over six months, the project successfully migrated all affected lines in just two weeks, with zero service interruption.
A critical architecture and a generational leap for users
The centralised architecture now enables Hub One to manage its critical communications estate within a unified framework. The resilience mechanisms inherited from the legacy infrastructure, robust analog lines, traffic segmentation, and equipment redundancy, are preserved wherever they remain relevant.
At the same time, the integration with the Enreach UP platform, designed to interface with complex operator environments, lays the groundwork for the evolution toward new application services and AI-driven use cases: enhanced services such as virtual assistants, call transcription, and call recording.
“Voice is a functional node that is not sufficiently valued in digital transformation. In modern architectures, the value of voice lies in its ability to integrate into the operational, business, and application environment of the company, and to become a source of information and decision-making for operations. This project demonstrates that it is possible to modernise critical communications infrastructures without imposing disruption on organisations,” says Bertrand Pourcelot, CEO of Enreach for Service Providers
By supporting a major operator such as Hub One, Enreach confirms its ability to migrate legacy infrastructures toward next-generation, highly available services. This approach can be replicated across all sectors that require the same level of continuity and resilience: railway networks, urban transport systems, logistics platforms, industrial sites, healthcare facilities, as well as governmental and military infrastructures.
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About Enreach for Service Providers
Enreach for Services Providers is a European leader in smart contact solutions. Our mission is to create customisable mobile-first contact solutions, enabling our partners to thrive and users to transform their interactions. Our platform Enreach UP enables service providers and integrators to deliver their business customers with value-added services, including FMC, video collaboration, messaging, inbound/outbound call centre functionality and conversational bots, seamlessly integrated with mobile services, Microsoft Teams, CRM and ERP systems. Our customisable-by-design platform Enreach UP enables full white-labelling, personalised user experience, BYOx enablement (carrier, OSS/BSS/mobile), APIs for integration, automation & AI as well as multiple deployment options including PaaS. Enreach group operates in over 15 countries and counts more than 1000 employees. For more information visit: https://enreach.com/sp/
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