modifyMOIAttributes operation For NSI allocateNsi operation deallocateNsi operation For NSSI allocateNssi operation deallocateNssi operation Provisioning data For NSI and NSSI subscribe operation report operations unSubscribe operation Provisioning data For NSI and NSSI notifyMOICreation notification report notifications notifyMOIDeletion notification notifyMOIAttributeValueChanges notification Note: "MOI" stands for "Managed Object Instance." Management Management service consumer service producer Subscription request Subscription Response (positive) The condition is met Notification The condition is met Notification Figure 6.5.2 Subscribe-notify communication paradigm (Source: Reproduced by permission of © 3GPP). 6.5 Operations, Administration, and Management NSSIs. Component type A is typically common for a family of MnSs. Table 6.5.1 provides example of operations and notifications for the family of provisioning MnSs for the NSI and NSSI, further detailed in 3GPP TS 28.532. Figure 6.5.2 outlines typical procedures associated with a subscription-based manage- ment service that provides notifications. Subscription request operation is initiated by the consumer. The provider replies with a positive response and the subscription is established. When the notification condition is met, the provider of the service sends a notification to the consumer. 6.5.3.2 Management Service Exposure The management service exposure concept is an important part of the service-based management architecture. Any entity can be a provider of the management service in the service-based architecture. A network entity consuming certain MnSs can be a "proxy" exposing (reproducing) it further. Figure 6.5.3 shows an example of the management service X produced by entity A (NF) and consumed by another entity B (network management function) exposing it further to entity C (final consumer). The concept of exposure provides additional deployment flexibility in the network man- agement topology. For example, the network operator may decide that 