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long distance network

The classic long-distance network is a hierarchically ordered network whose exchanges are connected to each other in a linear fashion. It consists of several exchanges, which are collectively referred to as a long-distance exchange.

In the hierarchy of exchanges, the node exchange (KVSt) is above the local exchange, above it the main exchange (HVSt) and at the highest level of the hierarchy the central exchange (ZVSt).

Hierarchy of the telecommunications network

Hierarchy of the telecommunications network

This hierarchy is not mandatory; in geographical areas with low population density, one switching level can be omitted and switching can be taken over by the lower level. For this purpose, the exchanges are meshed with each other.

It is possible to assign a further digit of the area code to each switching hierarchy: For example, if the area code is 02271, then the digits 02 are assigned to the central exchange, 022 to the main exchange, 0227 to the node exchange, and 02271 to the local exchange.

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Englisch: long distance network
Updated at: 31.01.2012
#Words: 238
Translations: DE