Success Story

Modern network technology in historic buildings: The Bavarian Ministry of Culture gets its IT environment ready for the future

The Ministry for Education and Culture, Science and Art of the federal state of Bavaria relies on quality and future-safe concepts – also on the IT sector. Here, the basis for all applications is the newly installed IT infrastructure, which connects approximately 450 administrative offices of the two buildings in the center of Munich. To connect the workplaces, the Ministry opted for the Fiber To The Office (FTTO) concept, which uses standard copper cables for the connection of the end devices, while the offices themselves are connected with fiber optic. This technology successively replaced the FTTD concept, where each workplace is directly connected to the central switches over a fiber optic connection with a rate of 100 Mbps.

Prerequisites for Voice-over-IP
For a long time, Fiber To The Desk (FTTD) was considered to be the concept of the future. Today, it is only applied in individual cases any longer. Economic as well as technical reasons usually speak for FTTO, a concept which combines fiber optic with the copper cable. In the case of the Bavarian Ministry of Culture, technical innovations were the driving incentive to search for an alternative to the existing network technology. As soon as in 2013, the migration from ISDN to IP telephony was included in the agenda for the years to come, and the connections in the offices limited to a bandwidth of 100 Mbps frequently proved to be insufficient, as well.  In an overall project, the Ministry issued an invitation to tender both for the commissioning for the installation of the backbone infrastructure and for the Gigabit Ethernet connection of the individual offices.

The basic demands made on the micro-switches required in the offices were clearly defined:

  • a homogeneous network management system for all components
  • simple installation in the cable duct or floor box
  • VLANs which are configurable in sufficient numbers
  • loop detection is possible
  • Power-over-Ethernet to directly operate the future VoIP telephony

With its compact and high-performance Gigabit Ethernet micro-switches, MICROSENS GmbH & Co. KG fulfilled all requirements and were able to win the order from the Ministry as partner of euromicron solutions, the company which delivered and installed all components, including for the backbone area.

Migration According to Schedule

Initially, the first of the two buildings was migrated to the new technology. For this purpose, the responsible project manager of the Federal Ministry, Peter Thoma, and his team divided the buildings into 5 wings. In a first step, the euromicron technicians installed the MICROSENS micro-switches in the cable ducts of the corresponding offices and directly connected them to one of the three available fiber optic connections. After the completion of the work in one wing, only the corresponding optical fibers remained to be reinstalled in the switch. After a retrofitting period of only 10 minutes, all devices were available again, as usual. The two additional optical waveguides are currently no longer required. They can be reactivated at short notice, however, if they are needed again.

Special Requirements Included
During the migration of the second part of the building in spring 2015, a special constructional requirement had to be considered: Here, the micro-switches had to be accommodated in the floor box, but the latter was installed too low in the course of earlier reconstruction measures. Previously, this frequently led to problems, since the bend radiuses of the optical fibers left little room for bending and often caused them to break. Based on the planning made in good time, MICROSENS was able to take this technical restriction into account already when manufacturing the micro-switches, so that the work in the second section of the building could be done smoothly.

Top-level Grades for the Ministry
Someone who collects a lot of points in a test is securing a good grade for himself in class. That's what happened to Peter Thoma in his migration project. "We herewith certify that our new network offers a good performance without any restrictions. It is running in a stable manner and offers ideal prerequisites for the migration to voice-over-IP ahead of us." As a positive side effect, the project leader mentioned additionally that the port density was reduced by two thirds. As only one out of the three optical fibers per room is used, the number of ports required for the switches is reduced, which also decreases the power consumption, as a result. In addition, devices can now be changed much more easily and cost-effectively: While previously the existing 100-Mbps optical waveguide adapter cards first had to be installed in the new device, it is now possible to use all available standard components. Therefore, no retrofitting times are necessary and the network printers can be addressed without problems. In total, the migration from FTTD to FTTO has fulfilled all expectations of the Bavarian Ministry of Culture.




Galerie de photos

A propos de MICROSENS

La transmission d'informations par des connexions à fibres optiques présente de nombreux avantages. MICROSENS GmbH & Co. KG l'a reconnu très tôt. L'entreprise, qui fait partie des pionniers, développe et produit des systèmes de communication et de transmission à haute performance en Allemagne depuis 1993. Adaptés individuellement aux exigences des différents domaines d'utilisation et intégrés dans des concepts globaux pour les différentes industries. Mais surtout, proche du client. Les défis techniques des projets des clients se répercutent directement sur le développement des produits. Il en résulte des solutions d'automatisation basées sur IP pour les bâtiments modernes, des concepts de réseau rentables pour les bureaux et les postes de travail, des solutions robustes et à sécurité intégrée pour les environnements industriels, des systèmes de transport optique pour les réseaux étendus d'avenir et la liaison efficace des sites et des centres de données.