title E2T init flow R4

participant RMR
participant Ran\nLostConnection\nHandler as H
participant Ran\nDisconnection\nManager as DM
participant E2tInnstances\nManager as IM
participant Associaton\nManager as AM
participant Rnib\nDataService as RNIB
participant Routing\nManager as RM

RMR->H: handle
H->IM: GetE2TInstance
alt new instance
    H->RM: AddE2TInstance
    H->IM: AddE2TInstance
    note over H: end
else existing instance
    loop for each associated Ran
        H->DM: DisconnectRan
        DM->RNIB: GetNodeb
        alt Status = SHUT_DOWN
            DM->H: (no change)
        else Status = SHUTTING_DOWN
            note over DM: Set Status = SHUT_DOWN
            DM->RNIB: UpdateNodeb
            DM->H: ok
        else
            note over DM: Set Status = DISCONNECTED
            DM->RNIB: UpdateNodeb
            DM->H: ok
        end
    end
end