City of Arnsberg
Installation of fiber-optic connections in the city district
Works
Civil works | Duct & cable laying
Building connections | Cable deployment
Splicing | Fiber jetting
iv.sys Project Management
Due to the modernization of the town hall, the City of Arnsberg brought the data center (DC) infrastructure at the new sites up to the current technical standard. The two newly planned DC locations are roughly 1.5 km apart within the city. In addition, various fiber connections from remote sites previously terminated in the town hall building. These municipally operated fiber links had to be rerouted to the new DC locations via alternative paths.
In a first construction phase, the City of Arnsberg had already partially connected the buildings to be integrated using 7-way 12 mm microduct bundles. In the second construction phase, iv.sys GmbH carried out the following steps to complete the fiber connections:
- Civil works and installation of the remaining microduct bundles
- Creation of building entries (house connections / BEPs)
- Routing a microduct bundle under a bridge
- Air-blowing the required fiber-optic cables into the microduct bundles
- Indoor routing of fiber cables to the network cabinet
- Terminating the fiber cables on a patch panel
- Establishing the required links between legacy and new fiber cables inside a splice closure
In May 2021, the City of Arnsberg commissioned iv.sys GmbH to carry out the aforementioned works. Just a few days later, the iv.sys team began scheduling and coordinating the civil works. In line with the client’s timeline, we started the trenching, laid the microduct bundles, delivered and installed the building entry points (BEPs), and routed the microduct bundles into existing cable manholes. Using end caps, the entire duct system was protected against the ingress of water, dirt, and gases.
Due to the then-current raw material shortage, there were lead-time issues with the custom air-blown cable manufactured specifically for iv.sys and the customer—a universal A/I-DQH cable with multiple loose tubes. Despite this, thanks to a significant staffing effort, we were able to reduce delays in the construction schedule to an absolute minimum.
After we had jetted all cables, we routed them from the building entry point to the network cabinet. A key requirement from the client was to run the cables directly to the network cabinets—some of which are up to 20 meters inside the buildings and on different floors. For this reason, we used an air-blown cable that complies with current in-building fire safety regulations. The iv.sys GmbH technicians then completed the splicing of the universal cables quickly and efficiently. Another special requirement was to connect the existing and new fiber cables inside a splice closure within a very short timeframe. Thanks to the prompt execution of the work on the existing fibers, there were only minor, short-lived restrictions to the digital services relied upon by the entire city administration.
Naturally, all fiber links were subsequently certified using OTDR testing, and the customer received comprehensive, meaningful documentation.
Client testimonial (IT department):
From the client’s perspective, iv.sys delivered excellent, highly professional work. What especially stands out is the dedication of everyone involved across the project phases. That commitment was epitomized by an iv.sys technician’s remark while splicing the closure late in the evening: “We’ll finish this today, even if it takes until 1:00 a.m.” Our conclusion: we’d be happy to work with iv.sys again anytime.
