digital crossconnect (SDH) (DXC)
A Digital Cross Connect (DXC) is a network component that automatically switches cross connections for digital signals.
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A Digital Crossconnect (DXC) can be regarded as a non-blocking switching system that establishes a connection between two interfaces. Via such a DXC component, which is used in the core network, STM interfaces and E-signals can be switched in the manner of a crossconnect. Thus the digital crossconnect maps PDH feeder signals into virtual containers and can also reorder and switch the virtual containers in a synchronous transport module STM-n or transfer them to other STM-n.