Patent ID: 6941486

Claim:
A method for optimizing transmission security and failure security in high-bit-rate data networks via signal line redundancy between network nodes such that parallel signal lines are capable of at least one of being occupied and being switched to at least one of a working mode and a protection mode, wherein selectors, bridge circuits and interface modules are respectively provided at the network node side, each of the parallel signal lines is terminated at the network node side with a respective interface module, thereby creating an interface module redundancy, and each interface module is in an active state, comprising: immediately countering a failure of one of the interface modules by signal line switching with a switching time of approximately 50 ms; immediately countering a line error by the interface module redundancy; and transmitting error messages between the respective interface modules of the parallel signal lines in each of the network nodes, wherein the bridge circuit ensures that the interface modules, of which there are at least two, of each network node always contain data and information which is to be transmitted via the signal lines.