An assembly (10) for managing components (100, 150) of a telecommunication system comprises a supporting frame (20) having at least one shaped opening (21) and at least one supporting member (40) for said component (100, 150). The supporting member (40) has an integral portion adapted to be inserted into the shaped opening (21). A locking element (50) is associated with the supporting member (40). The locking element (50) is movable on said supporting member between a first operative position in which said integral portion of the supporting member (40) can be inserted into said shaped opening (21) and extracted therefrom, and a second operative position in which extraction of said integral portion of the supporting member (40) from said shaped opening (21) is prevented, whereby fixedly associating said supporting member (40) with said supporting frame (20).