1. A centralized command system for a telecommunications network, comprising: a central exchange of a telecommunications network; network elements under control of said central exchange constituting an entity which is controllable in a centralized manner from the central exchange by means of user interfaces of individual concentrators; a program-based command structure in which the command sequences required by each task and directed to the central exchange and/or one or more of said network elements are combined so as to form a single logical task entity, or macro, having a respective target system, on the basis of which said command system automatically initiates embedded terminal sessions with said network elements and executes commands necessary for performing the respective task; said program-based command structure being configured to open a respective terminal session with each respective target system of each said logical task entity or macro, before starting the respective logical task entity or macro, and to maintain all resulting connections in parallel during execution of the whole of the respective logical task or macro.