A Digital Crossconnect (DXC) is a network component that automatically switches cross connections for digital signals.
A Digital Crossconnect (DXC) can be regarded as a non-blocking switching system that establishes a connection between two interfaces. Through 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 also transfer them to other STM-ns.