Inter-operator OSS interface for delivering pan-European ATM VP service

The provision of ATM virtual paths across multiple network domains requires interaction between the operational support systems (OSS) used by the diff erent network operators to manage those networks. This paper describes the interfaces needed between such OSS to support performance and accounting ma nagement. It also describes an approach to ensuring those interfaces are se cure. The results may be suitable for operational deployment and applicable with further development for other ATM services such as virtual circuits a nd switched services.