Wall-mounted distributors for customer premises fibre-optics
9 March 2005
Interconnection
Modern building cabling systems are structured in order to ensure ease of maintenance as well as allow easy modifications and extensions. A new generation of wall-mounted distributor housings from Huber+Suhner offer significant benefits in such applications: numerous possible configurations, limitation of bending radius to ensure long-term performance of optical fibre and pivoting cassettes for access to each individual fibre.
The standards IEC 11801 and EN 50173 specifically define modern building cabling systems. Such cabling systems are divided into three sections: campus backbone, building backbone and horizontal cabling systems.
Distributor housings
At the interconnection points, suitable housings are needed for splitting up the fibres to the individual connections. In addition to the main distributors based on 19" technology for the main nodes, the LISA product range also defines four different types of wall-mounted distributors. The new-generation wall-mounted distributors can be used both as interconnection distributors and as building floor distributors in LAN cabling systems. All the housings can be installed in three variants to suit specific applications: splicing through, splicing/patching and patching through.
Long-term loss-free transmission
Two wall-mounted distributors additionally allow the choice between MultiCircuit management or Single-Circuit management. The MultiCircuit management system is typically equipped with 12 splices per cassette, while the SingleCircuit management system with two. The consistent limitation of the bending radius ensures reliable, long-term-stable guidance of the fibres, preventing any increase in losses by microbending. Each fibre management system enables the cassettes to be pivoted individually, offering access to each fibre. The choice of two doors allows selective access to fibre areas to ensure that manipulations are only possible by authorised persons.
The WBO wall-mounted distributor is used as an interconnection point between communications companies (carriers) and private building networks (customer premises) - the so-called subscriber connections. Its housing is water-tight and can therefore also be readily installed outdoors.
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