11.1.1 Processes and procedures in MSC/VLR

03.933GPPStage 2Technical realization of Completion of Calls to Busy Subscriber (CCBS)TS

Figure 11.1.1.1: Process MSC_CCBS_Recall_Manager

This process controls the CCBS Recall handling in the MSC and controls timers T4 and T10

Figure 11.1.1.2: Process VLR_CCBS_Recall_Manager

This process controls the CCBS Recall handling in the VLR and reports the result of the Recall directly to the HLR.

Figure 11.1.1.3: Process OCH_CCBS_VLR

This process controls the CCBS Call Setup in the VLR

Figure 11.1.1.4: Procedure CCBS_Check_OG_Call

This procedure checks whether the outgoing call meets various conditions set by the CCBS supplementary service. If CCBS is not implemented Pass exit shall be taken.

Figure 11.1.1.5: Procedure CCBS_Check_If_CCBS_Possible

This procedure is called when Release message is received from the destination network. It checks whether CCBS activation is possible.

Figure 11.1.1.6: Procedure CCBS_Activation_MSC

If CCBS activation is possible this procedure is called. It handles the dialogue between MS and MSC and MSC and HLR respectively.

Figure 11.1.1.7: Procedure Page_MS_MSC_For_Recall

During CCBS recall this procedure handles paging of the MS if the location area id is known.

Figure 11.1.1.8: Procedure Search_For_MS_MSC_For_Recall

During CCBS recall this procedure handles paging of the MS on MSC side if the location area id is not known.

Figure 11.1.1.9: Procedure Search_For_MS_VLR_Recall

During CCBS recall this procedure handles paging of the MS on VLR side if the location area id is not known.

Figure 11.1.1.10: Procedure Complete_Recall_MSC

During CCBS recall this procedure handles early channel allocation and establish CC connection with the MS.

Figure 11.1.1.11: Procedure CCBS_OCH_Report_Success

This procedure is called when CCBS call is successfully delivered to the destination network. The procedure informs HLR of successful call delivery.

Figure 11.1.1.12: Procedure CCBS_OCH_Report_Failure

This procedure is called when CCBS call delivery failed to the destination network. The procedure informs HLR of call delivery failure.

Figure 11.1.1.1: Process MSC_CCBS_Recall_Manager (sheet 1 of 4)

Figure 11.1.1.1: Process MSC_CCBS_Recall_Manager (sheet 2 of 4)

Figure 11.1.1.1: Process MSC_CCBS_Recall_Manager (sheet 3 of 4)

Figure 11.1.1.1: Process MSC_CCBS_Recall_Manager (sheet 4 of 4)

Figure 11.1.1.2: Process VLR_CCBS_Recall_Manager (sheet 1 of 4)

Figure 11.1.1.2: Process VLR_CCBS_Recall_Manager (sheet 2 of 4)

Figure 11.1.1.2: Process VLR_CCBS_Recall_Manager (sheet 3 of 4)

Figure 11.1.1.2: Process VLR_CCBS_Recall_Manager (sheet 4 of 4)

Figure 11.1.1.3: Process OCH_CCBS_VLR

Figure 11.1.1.4: Procedure CCBS_Check_OG_Call

Figure 11.1.1.5: Procedure CCBS_Check_If_CCBS_Possible

Figure 11.1.1.6: Procedure CCBS_Activation_MSC (sheet 1 of 2)

Figure 11.1.1.6: Procedure CCBS_Activation_MSC (sheet 2 of 2)

Figure 11.1.1.7: Procedure Page_MS_MSC_For_Recall (sheet 1 of 2)

Figure 11.1.1.7: Procedure Page_MS_MSC_For_Recall (sheet 2 of 2)

Figure 11.1.1.8: Procedure Search_For_MS_MSC_For_Recall

Figure 11.1.1.9: Procedure Search_For_MS_VLR_Recall

Figure 11.1.1.10: Procedure Complete_Recall_MSC (sheet 1 of 2)

Figure 11.1.1.10: Procedure Complete_Recall_MSC (sheet 2 of 2)

Figure 11.1.1.11: Procedure CCBS_OCH_Report_Success

Figure 11.1.1.12: Procedure CCBS_OCH_Report_Failure