Recommendation ITU-T G.8011/Y.1307 describes a framework for defining network-oriented characteristics of Ethernet services. The framework is based on the modelling of Ethernet layer networks described in Recommendation ITU-T G.8010/Y.1306. The attribute sets introduced in this framework (Ethernet connection (EC), user-to-network interface (UNI) and network‑to‑network interface (NNI)) are intended to be used to create numerous specific Ethernet services.