• Object of type PTP - AendPTP (with its unique name/aid).

  • Object of type PTP - ZendPTP (with its unique name/aid) forming the two ends of RingProtectionGroup.

  • Objects of type TopologicalLinkGroup forming the protected Ring route.

  • Objects of type TopologicalLink that are protecting the TopologicalLinks forming the TopologicalLinkGroups (tlgs).