In order to avoid loss of business, JeraSoft’s telecom billing software for retail providers offers a cluster billing technology which keeps data flowing even if one of the servers fails. The cluster consists of a Master server plus one or several redundant billing servers. These are backup servers that can take over instantly if the Master server fails. Under normal conditions, the master and the redundant server can be used for load balancing. If the Master server fails, the redundant server becomes New Master and takes over all duties.