More speed, higher port density and flexible scalability in the data centre

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Consulting Services

Consulting Services for data centers & technical building infrastructures

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RZ-Insight: Design of data centers

DC-Insight: The four most important components of modern data centers

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„The need for speed” in data centers | How cabling for 400G Ethernet might look like

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Are expanded beam connector systems an alternative to the MTP®/MPO connector?

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Cabling in high-performance data centers

Challenges for cabling in high-performance data centers

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PreCONNECT® SMAP G2 panel systems

PreCONNECT® SMAP-G2 panel systems - the right solution for every application

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Integrated solutions for the secure & efficient operation of digital infrastructures

Fiber optic connectivity | Cabling solutions | Infrastructure services

Since 1991, Rosenberger Optical Solutions & Infrastructure (Rosenberger OSI) has been 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 high expertise in the development and operational excellence in the production of system solutions for communication networks. Our comprehensive services enable the secure and efficient operation of digital infrastructures.


As a partner of the market leaders, we are setting the standards for the future.


Products - Perfect to the last detail

We deliver sustainable solutions for data centers and local networks: Flexibly and fast!

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.

Thats what our customers say

Only top-of-the-range components to guarantee maximum reliability and performance in our Tier IV Data Center

For Elmec, continuous upgrading of the technologies used in its data center is not just a strength, but also a commitment to our clients. 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.

Management Elmec

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Comprehensive services - Rely on the experts

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.

News & Media


Expanded Beam Connectors on the rise

Flexible plug-in technology
Potential for new applications

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Success Stories

Structured cabling for a digital future

Rosenberger OSI is supporting envia TEL during the construction of a colocation datacenter

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Datacenter Infrastructure – the deciding factors

Increasing port density in datacenters
Cabling for higher speeds in datacenters
Highly-scalable architecture using spine-leaf

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Press Releases

State-of-the-art cabling for envia TEL's colocation data center

Installation of future-oriented cabling infrastructure meets all the requirements for SK3/VK3 of the EN 50600 certification.

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About Rosenberger OSI

Rosenberger OSI employs about 740 people and has been a part of the globally operating Rosenberger Group since 1998. As an independent, medium-sized company which is part of the Rosenberger Group, we consciously avoid rigid hierarchies, opting instead for a flexible, process-oriented organisation.






> 4 Mio.
fiber ends
per year

Customer satisfaction

> 500