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vertical line

Cross-connections (QL) are lines that do not fit into the hierarchical connection system of the exchanges

, but bypass exchanges for the purpose of optimum traffic routing.

Hierarchy of exch

Hierarchy of exch

anges They connect exchanges at the same hierarchical levels but also those at different hierarchical levels, for example the local exchange (OVSt) with the central exchange (ZVSt) bypassing the node exchange (KVSt).

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Englisch: vertical line
Updated at: 07.11.2020
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