2. Basic handover procedure not requiring the establishment of a circuit connection between 3G MSC-A and 3G MSC-B
3. Subsequent Handover from 3G MSC-B back to 3G MSC-A
4. Subsequent Handover from 3G MSC-B to 3G MSC-B’
5. Subsequent Handover from 3G MSC-B back to 3G MSC-A without circuit connections
6. Subsequent Handover from 3G MSC-B to 3G MSC-B’ without circuit connections
7. Circuit-switched call establishment after a Basic UMTS to UMTS Handover without circuit connection
