title LostConnection flow R4

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

RMR->H: handle
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
H->AM: DissociateRan
AM->RNIB: GetNodeb
note over AM: e2tAddress = empty
AM->RNIB: UpdateNodeb
AM->IM: RemoveRanFromInstance
AM->RM: DissociateRanE2TInstance