Integrated solutions for the secure & efficient operation of digital infrastructures
Comprehensive service in all project phases
Our experienced team supports your project from the initial planning phase through to installation, documentation, and ongoing operation. Benefit from years of expertise and proven know-how.
Optimise your IT infrastructure - Future-proof and flexible
A modern, secure IT infrastructure is the foundation for digital technologies and applications. Thatโs why it makes sense to rely on fibre-optic cabling solutions from Rosenberger OSI. Benefit from: high availability, superior performance and exceptional scalability. We take a comprehensive, tailored approach to your IT applications and processes. With over 30 years of experience in customer projects, we deliver IT infrastructures optimally adapted to your unique requirements. Let us help you find the perfect solution. Contact us
Successfully implemented projects - That is what our customers say
"We appreciate Rosenberger OSIโs short decision-making paths, rapid service provision and operational flexibility. Rosenberger OSI supported us so well with its expertise and proposed solutions that our everyday work was made a lot easier."
envia TEL GmbH
"...That is why we only choose to work with partners and suppliers that can guarantee high quality standards and innovative solutions, such as Rosenberger OSI."
Elmec Informatica S.p.A.
"Despite the sometimes somewhat critical conditions in the installation environment, the Rosenberger OSI team has implemented our specifications in an exemplary manner..."
Tennet Holding B.V.
News & Media
Press Releases
04/14/2026
Avacon implements flexible colocation data centre using infrastructure from Rosenberger OSI The focus of the project was on implementing a flexible cabling solution that can adapt to diverse and often unpredictable customer requirements.
Blog & Vlog
03/30/2026
Why MMC is not a replacement but the perfect complement for hyperscale data centres New connectors such as MMC are not a disruptive one-size-fits-all solution, but complementary building blocks within a scalable fibre-optic ecosystem.
Press Releases
03/10/2026
MMC connectors for high-density fibre optic cabling The high-performance Very Small Form Factor solution has been specifically developed for high-density fibre optic cabling, addressing the increasing demands of modern data centres supporting migrations to 400G, 800G, 1.6TB and 3.2TB.
Blog & Vlog
02/24/2026
The Strategic Triangle of Data Centres: Sovereignty, Speed and Sustainability Handover of the installed infrastructure to the operations team
Provision of documentation for operating personnel
Establishment of long-term maintenance and service plans
About Rosenberger OSI
Since 1991 Rosenberger Optical Solutions & Infrastructure (Rosenberger OSI) is a recognised expert for fibre-based connectivity, cabling solutions and infrastructure services in the areas of data centres, local area networks, mobile networks and industrial applications. As an integrated solution provider we have a profound expertise in developing and producing system solutions for communication networks. Our comprehensive service offering enables the secure and efficient operation of digital infrastructures. That combination, along with our strong customer focus as well as being integrated in the worldwide operating Rosenberger Group, is unique and makes us a strong partner in the global market.
1991 founded
800 employees
> 6 Mio. assembled fiber ends per year
> 500 international customers
Memberships
Rosenberger OSI itself is a member of various associations and thus works actively towards optimising economic constructions, raising product and maintenance quality, and improving production and delivery efficiency.
