Mobile phone network management systems

System and method for maintaining or optimizing a mobile phone network comprising a plurality of data feed inputs including at least one performance data feed input to receive performance data relating to performance of said mobile phone network over a first time period and at least one configuration data feed input to receive configuration data relating to configuration of said mobile phone network over a second time period; and a radio performance optimization system coupled to said plurality of data feed inputs, said radio performance optimization system comprising a rules engine to operate on said performance data and on said configuration data in accordance with a set of hierarchical rules and to output one or more tasks for network optimization, a said task comprising a definition of a potential fault, exception or optimization of said network to be investigated by a service engineer.