Definition and implementation of a TMN information model for legacy PDH equipments

The paper addresses the problem of integrating legacy PDH equipment (Plesiochronous Digital Hierarchy standard) into a TMN (Telecommunications Management Network) based management system. It shows how to define a standard derived information model that supports the same functionality offered by legacy management interfaces. The paper explains how to apply the standard general models to real PDH equipment, emphasizing the problems derived from diversity in both equipment functionality and management interfaces. The model was implemented in TMN Q Adaptors using advanced software tools.