This Recommendation provides the analysis specification of the interface for on-site generic telecommunication smart maintenance (TSM). It defines the interface operation interactions for on-site TSM, including the managed entities and their relationships for the TSM interface, the interactive control information exchanged through this interface, and detailed parameter definitions of each interface operation. The maintenance information and interactions provided in this Recommendation follows the [ITU-T M.3020] management interface specification methodology in the interface analysis phase. It also follows the interface requirements provided in Recommendation [ITU-T M.3164.1], and is developed in a protocol-neutral manner. This Recommendation applies to the design, development, inter-connection and inter-operation of on-site generic telecommunication smart maintenance.