Abstract: The method stores data characteristic of the status of a computer given a malfunction that requires a subsequent restart of the computer. The computer status data is thereby continuously stored in the main memory of the computer and is read out therefrom and transferred onto a data carrier before the formatting of the main memory given the restart of the computer after the malfunction. A securing of the computer status data for error analysis and elimination can also be achieved with the inventive method given an immediate restart of the computer, so that the method can also be utilized in fail-safe systems with automatic start-up, for example in communication switching systems.

Abstract: In a circuit arrangement for centrally controlled telecommunication trunk exchanges, including PCM telephone trunk exchanges, with line trunk groups with submatrices, which are connected with duplicate central processors and duplicate switching matrices, line trunk groups connected with duplicate switching matrices over two link circuit systems and each having, among other things, a submatrix and a local controller, are divided into two categories. Concentrators are always connected to one line trunk group in each category. For the loading of the controllers and concentrators with new programs and/or data, one processor continues to perform the switching procedures, while only the controllers in the first category remain connected with it, while the concentrators continue to make connections only over the line trunk groups in the first category. The other processor is connected to the controllers in the second category and performs loading procedures for and through them.