The purpose of this Recommendation is to define the Q3 interface between a Local Exchange (LE) and an Access Network (AN) and the Telecommunications Management Network (TMN) related to fault and performance management functions for V5 interfaces, as described in Recommendations G.964 and G.965, and their associated user ports. Management of transmission, media, and services which are not related to V5 interfaces is outside the scope of this Recommendation, as is the management of equipment. This Recommendation includes the logging of faults and related functions.