An entity, part of the end-to-end reconfiguration management system, corresponding to the process that monitors the environment collecting sufficient statistics, Monitoring Data (MON_DATA), to update the environment model used to decide if reconfiguration is needed. This entity can be distributed across the network (terminal, core network) so we distinguish between Monitoring Terminal Side (MON_TS), and Monitoring Network Side (MON_NS). Distribution depends on where the environment statistics are collected, where the reconfiguration decision is taken etc. These parts communicate for transferring "monitoring data" by means of the Reconfiguration Management Network Interface (RC_MGMNT_NETIF). To monitor equipment physical resources the Resource Monitor (MON_RSRC) entity is defined.