Integrierte Lösungen für den sicheren & effizienten Betrieb digitaler Infrastrukturen

Fiber optic connectivity | Cabling solutions | Infrastructure services

Since 1991 Rosenberger Optical Solutions & Infrastructure (Rosenberger OSI) is a recognized expert for fiber-based connectivity, cabling solutions and infrastructure services in the areas of data centers, 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.

Ihr Partner für die Planung & Umsetzung von digitalen Infrastrukturen

Umfassender Service - Wir begleiten Sie von A-Z

Ebenso entscheidend ist allerdings auch deren fachgerechte Planung und Installation sowie die laufende Wartung. Unsere kompetenten Mitarbeiter vor Ort sorgen für Sicherheit in allen Projektphasen - von der Planung über die Installation, der Dokumentation bis zum Betrieb aus einer Hand.
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Successfully implemented projects - Thats what our customers say

Tier IV Data Center: top-of-the-range components for a maximum reliability

"...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.

Structured cabling for a digital future

"...We were won over not just by the excellent value for money of the solution but also by the commitment and on-schedule conduct of the project and, last but not least, the personal consulting we received throughout the entire project phase."

envia TEL GmbH

Future-oriented cabling secures the supply network

"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.

Wir setzen auf Trends & innovative Lösungen: Flexibly and fast!

To perform at the highest level, a data center must have state-of-the-art cabling products. But expert planning and installation are also of utmost importance, as is continuous maintenance. IT applications are becoming less and less fault-tolerant whereas their sophistication increases. Even a minor flaw can adversely affect overall performance. With Rosenberger OSI Services you’ll feel confident in every phase of your project.

400GBase-EthernetSpine-Leaf-VerkabelungHigh-Density-KonzepteMeet-me-RoomsFlexibilisierung der ArbeitsweltDigitalisierung der ArbeitsweltIntegration von IoT / Smart Building Anwendungen

Ganzheitliche Systemlösungen für die strukturierte Verkabelung

FO cabling

The Rosenberger OSI cabling systems are comprehensive solutions for structured cabling. All components are perfectly matched and thus, guarantee highest reliability.

LAN cabling

Cabling design created by experts, operational flexibility, modularity and fast, simple installation with performance guaranteedthat's what our lan cabling systems stand for.

Copper cabling

Thanks to our decades of experience in data center cabling, we are very familiar with their requirements. Our solution: factory-assembled copper data trunks.

News & Media

Fiber optic connectivity systems
Blog & Vlog

Fiber Optic Connectors: Common plug types & trends

Fiber optic connector with "physical contact"
The completely new innovative "Expanded Beam" principle
Very Small Form Factor Connectors are on the rise

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Blog & Vlog

Vlog #1 Increasing port density in datacenters

OSI Insights in our video-blog:
Handlling when high-density panels are used
Challenges for service teams in the data center

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Events & Webinars

Data Centre World Paris - Save your free ticket

November 23 - 24, 2021 | Data Centre World Paris. Make an appointment with us on site and get a free ticket.

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Success Stories

Into a new, digital school year with fiber optics

Rosenberger OSI installs modern data network for primary and middle school Erdweg

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About Rosenberger OSI

Rosenberger OSI beschäftigt rund 740 Mitarbeiter und ist seit 1998 Teil der global operierenden Rosenberger Gruppe. Als unabhängiges mittelständisches Unternehmen, eingebunden in die Rosenberger Gruppe, verzichten wir bewusst auf starre Hierarchien und setzen auf flexible, prozessorientierte Organisation.


1991 founded


740 employees


> 4 Mio. assembled fiber ends per year

Customer satisfaction

> 500 international customers