Network component, communications network and method for providing data connection

摘要

The component has a storage unit (41) to store coding keys (K1, K2, K3), and a decoder to decode coded data that are received though a transmission network (20) by utilizing the stored coding keys. A data selector selectively transmits data between the network and an assigned communications interface. The selector automatically prevents the transmission of the coded data to the interface when the coded data are not decoded by the decoder using the keys. Independent claims are also included for the following: (1) a communications network comprising a transmission network and a set of communications interfaces (2) a method for providing a data connection between two communications interfaces that are connected with one another through a transmission network.