Recommendation ITU-T G.808.2 defines the generic functional models, characteristics and processes associated with various ring protection schemes for connection oriented networks; e.g. Optical Transport Networks (OTN), Synchronous Digital Hierarchy (SDH) Networks. It also defines the objectives and applications for these schemes. Protection scheme describes in this Recommendation is shared ring protection with various monitoring alternatives for individual signals and groups of signals. Generic functional models, characteristics and processes for linear protection and interconnected subnetwork protection schemes are defined in other Recommendation.