Call Flow Messages:

participant UE

participant Utran

UE->Utran: RRC Connection Request/ RRC

Utran->UE: RRC Connection Setup/ RRC

UE->Utran: RRC Connection Setup Complete/ RRC

UE->Utran: CM Service Request/ MM

Utran->UE: Identity Request/ MM

UE->Utran: Identity Response/ MM

Utran->UE: Authentication Request/ MM

UE->Utran: Authentication Response/ MM

Utran->UE: Security Mode Command/ RRC

UE->Utran: Security Mode Complete/ RRC

UE->Utran: Setup MO/ CC

Utran->UE: Radio Bearer Setup/ RRC

UE->Utran: Radio Bearer Setup Complete/ RRC

Utran->UE: Call Proceeding/ CC

Utran->UE: Alerting/ CC

Utran->UE: Connect/ CC

UE->Utran: Connect Ack/ CC

UE->Utran: Disconnect/ CC

Utran->UE: Release/ CC

UE->Utran: Release Complete/ CC

Utran->UE: Radio Bearer Release/ RRC

UE->Utran: Radio Bearer Release Complete/ RRC

Utran->UE: RRC Connection Release/ RRC

UE->Utran: RRC Connection Release Complete/ RRC

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