This ITU-T Recommendation provides a Stage 2 and Stage 3 Description for the Q3 Interface in a Telecommunications Management Network. Its initial focus is Alarm Surveillance. Included in this Description are specifications of the functions, management information, services, functional units, and protocols related to Alarm Surveillance. Significant reuse of OSI Management specifications in the X.700-series Recommendations is described. Because of the desirability for providing common TMN solutions, this ITU-T Recommendation is expected to be applicable to other TMN or TMN-related interfaces.