Call Flows This section describes the following call flows: Network-initiated Idle to Active Transition Call Flow Network-initiated Service Request Rejection Call Flow Downlink Data Notification User Plane Activation Call Flow for UE in CM-Connected State Downlink Data Notification User Plane Activation Call Flow for UE in CM-Idle State Network-initiated Idle to Active Transition Call FlowNetwork-initiated Service Request Rejection Call FlowDownlink Data Notification User Plane Activation Call Flow for UE in CM-Connected StateDownlink Data Notification User Plane Activation Call Flow for UE in CM-Idle State