This ITU-T Recommendation describes a subset of TMN management services for Dedicated and Reconfigurable Circuits network identified in ITU-T Recommendation M.3200 as a TMN managed area. Its main focus is on the VPN service management. These management services may also be applicable for interactions between management systems of different service providers or within a service provider. TMN management services in this ITU-T Recommendation specify interface requirements between operation systems (OS) to perfom customer network management of VPN service. The interfaces addressed by the TMN management services in this ITU-T Recommendation are applicable to both the Xinterface and the 43 interface. Support for the services described in this ITU-T Recommendation are at the discretion of the Service Provider. The TMN management services in this ITU-T Recommendation are described using the GDMS template contained in ITU-T Recommendation M.3020 and build on the management services defined in ITU-T Recommendations M.3208.1 and M.3208.2.