The present invention relates to a digital telecommunications system for creating, integrating, grouping, managing, deploying, activating and orchestrating mobile, fixed, IP, converged and next generation services and networks. Said system is called MULTI-SERVICE NETWORK CENTER (10), and includes at least one application and service orchestration server module (15), referred to as Network Browser (15), at least one administration module (13), at least network gateway module (18), at least one integration gateway module (14) and at least one database and profiling module (19). Said system includes means to be integrated to at least one core telecommunications network and means for introducing and/or management of services of complex control into said core network and in at least one of the elements thereof. Said system further includes means for opening said core network and at least one of the core network elements to at least one service, wherein said at least one service is an own service, an operator service, a third-party service, an Internet service, or any other service. Moreover, said system includes means for opening said core network and at least one element of said core network to at least one other digital network.