Patent ID: 7657260

Claim:
A method of providing data redundancy for a Home Location Register (HLR), comprising the steps of: performing cutover for subscribers' data from more than one master HLRs to a redundant center HLR, respectively; preserving all successfully executed operation and maintenance commands which are associated with system data and said subscribers' data of the more than one master HLRs during operation of the master HLRs; transferring said operation and maintenance commands preserved in the more than one master HLRs to the redundant center HLR; converting the operation and maintenance commands into internal operation commands recognizable by the redundant center HLR, and loading the internal operation commands into a host machine of the redundant center HLR; wherein the operation and maintenance commands in the master HLRs are preserved as log files; said step of transferring the operation and maintenance commands comprises: transferring the log files containing the operation and maintenance commands; wherein said step of converting the operation and maintenance commands comprises: analyzing the received log files containing the operation and maintenance commands, and converting the operation and maintenance commands into internal operation commands recognizable by the redundant center HLR according to operated subscriber number, type of the operation command, operation content and operating result in the log files.