Patent ID: 6138274
Filing Date: 2000-10-24
Classification: G06F

Abstract:
A method for use in a network of redundant computers which control a telecommunications switching system for routing calls, said network of redundant computers including at least (i) a first computer having a program memory and executing a first computer program version that uses a first set of data base structures and (ii) a second computer having a program memory and executing a second computer program version that uses a second set of data base structures different from said first set of data base structures, said first and said second computers being coupled together, said method being for updating said second set of data base structures from said first set of data base structures and comprising the steps of:a) packing data, of said first set of data base structures in the memory of said first computer, into a data stream;b) transmitting over a link said data stream from the memory of said first computer to the memory of said second computer; andc) unpacking said data stream in said second computer to form said second set of data base structures in the memory of said second computer, said second set of data base structures being organizationally different from said first set of data base structures, so that the second set of data base structures within the program memory of said second computer is updated from the first set of data base structures within the program memory of said first computer, wherein said unpacking said data stream includes the steps of:d) reading data from said data stream to form at least one data base structure; ande) copying said data from said at least one data base structure into the program memory of said second computer;the method pack, transmit, unpack being characterized in that no work performed by said first computer program version and second computer program version is disrupted.