Content for TS 23.205 Word version: 18.0.0
8.2 UMTS to GSM
8.2.1 Intra-MSC UMTS to GSM Handover
8.2.2 Basic Inter-MSC UMTS to GSM Handover
8.2.3 Subsequent Inter-MSC UMTS to GSM Handover back to the Anchor MSC
8.2.4 Subsequent Inter-MSC UMTS to GSM Handover to a third MSC
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8.2 UMTS to GSM p. 80
8.2.1 Intra-MSC UMTS to GSM Handover p. 80
8.2.1.1 Relocation Required |R5| p. 80
8.2.1.2 Handover Request Acknowledge |R5| p. 81
8.2.1.3 Relocation Command/Handover Detect |R5| p. 81
8.2.1.4 Handover Complete |R5| p. 81
8.2.1.5 Interworking function |R5| p. 81
8.2.1.6 Voice Processing function |R5| p. 81
8.2.1.7 Handling of multiple bearers (multicall) |R5| p. 81
8.2.1.8 Failure Handling in MSC server |R5| p. 81
8.2.1.9 Example |R5| p. 81
8.2.1.10 Intra-MSC UMTS to GSM Handover for A interface over IP |R8| p. 84
8.2.2 Basic Inter-MSC UMTS to GSM Handover p. 85
8.2.2.1 MSC-A/ MGW-A p. 85
8.2.2.1.1 Bearer establishment between MGW-A and MGW-B |R5| p. 85
8.2.2.1.2 Relocation Command/Handover Detect |R5| p. 85
8.2.2.1.3 Handover Complete |R5| p. 86
8.2.2.1.4 Interworking function |R5| p. 86
8.2.2.1.5 Voice Processing function |R5| p. 86
8.2.2.1.6 Handling of multiple bearers (multicall) |R5| p. 86
8.2.2.1.7 Failure Handling in MSC server |R5| p. 86
8.2.2.2 MSC-B/MGW-B p. 86
8.2.2.2.1 MGW selection |R5| p. 86
8.2.2.2.2 Bearer establishment towards BSC-B |R5| p. 86
8.2.2.2.3 Bearer establishment between MGW-A and MGW-B |R5| p. 86
8.2.2.2.4 Voice Processing function |R5| p. 86
8.2.2.2.5 Failure Handling in MSC server |R5| p. 86
8.2.2.2.6 Example |R5| p. 87
8.2.2.3 Basic Inter-MSC UMTS to GSM Handover for A Interface over IP |R8| p. 89
8.2.3 Subsequent Inter-MSC UMTS to GSM Handover back to the Anchor MSC p. 90
8.2.3.1 MSC-A p. 90
8.2.3.1.1 Handover Request |R5| p. 90
8.2.3.1.2 Handover Request Acknowledge |R5| p. 91
8.2.3.1.3 Relocation Command/Handover Detect |R5| p. 91
8.2.3.1.4 Handover Complete |R5| p. 91
8.2.3.1.5 Interworking function |R5| p. 91
8.2.3.1.6 Voice Processing function |R5| p. 91
8.2.3.1.7 Handling of multiple bearers (multicall) |R5| p. 91
8.2.3.1.8 Failure Handling in MSC server |R5| p. 91
8.2.3.2 MSC-B p. 91
8.2.3.2.1 Handover Complete |R5| p. 91
8.2.3.2.2 Release of bearer towards MGW-A |R5| p. 91
8.2.3.2.3 Handling of multiple bearers (multicall) |R5| p. 92
8.2.3.2.4 Example |R5| p. 92
8.2.3.3 Subsequent Inter-MSC UMTS to GSM Handover back to the anchor MSC for A Interface over IP |R8| p. 94
8.2.4 Subsequent Inter-MSC UMTS to GSM Handover to a third MSC p. 95
