A system for managing network alarms generated by element manager modules responsive to corresponding faults/malfunctioning affecting network nodes or links of a telecommunication network is provided. The system may include an alarm management platform for gathering network alarms and generating a first set of network alarms comprising at least a subset of the gathered network alarms; a network operator unit arranging the network alarms into a network alarm table, and managing the faults/malfunctioning affecting the network nodes or links corresponding to the network alarms; an alarm prediction module receiving from the alarm management platform an alarm duration prediction request about a predicted duration of a selected network alarm and alarm data regarding the selected network alarm and generating an alarm duration prediction about the predicted duration by processing alarm data regarding the selected network alarm through a first machine learning algorithm trained with alarm data regarding past network alarms.