NETWORK MANAGING SYSTEM

PURPOSE:To efficiently and reliably attain a network management by positioning a network control system such as a composite switching system constructed to a prescribed node unit as a sub-network managing system and managing unitarily and collectively the system. CONSTITUTION:Respective sub-network managing systems 21-23 management are positioned as a system to executed individually the network of information communication network systems (a)-(c) constructed at a node unit and the network system is respectively collectively and unitarily managed. A high-order unified network managing system 24 sucks up the information of a composite switching system 5 constructed at every node unit through respective these sub-network managing systems 21-23 and the network management is collectively and unitarily controlled. Thus, the whole of the information communication network systems (a)-(c) can be efficiently and collectively managed.