Comparison of the PreCONNECT® OCTO cabling systems | MTP®, LC, SN® Quad and MDC Quad

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VersaTray - the highly modular & service-friendly 19" tray system

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We are nominated! Support us and take the chance to win Bluetooth headphones from Teufel

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Single source of services and cabling solutions for colocators

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Webinar: The Need for Speed Vol. 6 | Update 400/800G and 1.6TB optical transceiver

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Managed Services

Managed Services for Data Centers - Outsourcing that pays for itself

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Integrated solutions for the secure & efficient operation of digital infrastructures


Optimize your IT infrastructure - Future-proof and flexible

A modern, secure IT infrastructure is the basis for digital technologies and applications. That is why it makes sense to rely on fiber-optic cabling solutions from Rosenberger OSI. Benefit from high availability, performance and scalability. We take a comprehensive, individual approach to your IT applications and processes. We have placed our expertise in the service of customer projects for over 30 years. The result: an IT infrastructure that is optimally adapted to your requirements. We will be happy to help you find the optimum solution. Contact us


400GBase-Ethernet800GBase-EthernetHigh density panel systemsOn-Premises, colocation or cloud?


Successfully implemented projects - Thats what our customers say

Rosenberger OSI is supporting the expansion of DE-CIX Leipzig

"We appreciate Rosenberger OSI’s 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

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.

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.


News & Media

Press Releases

High-performance network infrastructure for Vignal Group

Commercial vehicle lighting and signaling elements Manufacturer opts for advanced 10 Gigabit Ethernet network from Rosenberger OSI.

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Blog & Vlog

Comparison of the PreCONNECT® OCTO cabling systems

Comparison of the PreCONNECT® OCTO cabling systems - MTP®, LC, SN® Quad & MDC Quad
Ethernet-, FibreChannel and InfiniBand standards
Singlemode or multimode?

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Press Releases

CPQ system - new era of customer interaction

The CPQ (Configure, Price, Quote) system speeds up processes, increases flexibility and further improves customer satisfaction.

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Blog & Vlog

Robust connector interface for fiber optic cables

EBO technology offers a solution for the use of fiber optics in demanding environments - with high-quality connectors such as the Size 12 lens connector.

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About Rosenberger OSI

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.


1991 founded


800 employees


> 6 Mio. assembled fiber ends per year

Customer satisfaction

> 500 international customers



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.