Call Flow Script:[]
participant UE
participant EUtran
participant Utran
EUtran->UE: Mobility from EUtran Command/ ERRC
UE->Utran: Handover To Utran Complete/ RRC
Utran->UE: Security Mode Command/ RRC
UE->Utran: Security Mode Complete/ RRC
Utran->UE: Utran Mobility Information/ RRC
UE->Utran: Utran Mobility Information Confirm/ RRC
UE->Utran: Routing Area Update Request/ GMM
Utran->UE: Identity Request/ GMM
UE->Utran: Identity Response/ GMM
Utran->UE: Authentication and Ciphering Request/ GMM
UE->Utran: Authentication and Ciphering Response/ GMM
Utran->UE: Security Mode Command/ RRC
UE->Utran: Security Mode Complete/ RRC
Utran->UE: Routing Area Update Accept/ GMM
UE->Utran: Routing Area Update Complete/ GMM