4.5.6 Handling of gsmSCF initiated calls

23.0783GPPCustomised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4Release 17Stage 2TS

4.5.6.1 Handling of gsmSCF initiated calls in the MSC

Handling of gsmSCF initiated calls in the MSC involves the following process and procedures:

– Process CAMEL_ICA_MSC;

– Procedure CAMEL_ICA_MSC_ALERTING;

– Procedure CAMEL_ICA_MSC_ANSWER;

– Procedure CAMEL_ICA_MSC1;

– Procedure CAMEL_ICA_MSC2;

– Procedure CAMEL_ICA_Dialled_Services.

The Process CAMEL_ ICA_MSC handles both gsmSCF initiated new calls and gsmSCF initiated new parties.

The following paragraphs give details on the behaviour of the MSC in the process CAMEL_ICA_MSC.

4.5.6.1.1 Actions of the MSC on receipt of Int_Error

The process CAMEL_ICA_MSC returns to idle.

4.5.6.1.2 Actions of the MSC on receipt of Int_Continue

The MSC continues processing without any modification of call parameters.

4.5.6.1.3 Actions of the MSC on receipt of Int_Continue_With_Argument

The MSC continues processing with modification of call parameters.

4.5.6.1.4 Actions of the MSC on receipt of Int_Disconnect_Leg

A Release is sent to the destination exchange if required. The release cause received in the Int_Disconnect_Leg signal is used. The process CAMEL_ICA_MSC returns to idle.

4.5.6.1.5 Actions of the MSC on receipt of Int_Release_Call

A Release is sent to the destination exchange if required. The release cause received in the Int_Release_Call signal is used. The MSC then releases all call resources and the process CAMEL_ ICA_MSC returns to idle.

Figure 4.89-1: Process CAMEL_ICA_MSC (sheet 1)

Figure 4.89-2: Process CAMEL_ICA_MSC (sheet 2)

Figure 4.89-3: Process CAMEL_ICA_MSC (sheet 3)

Figure 4.89-4: Process CAMEL_ICA_MSC (sheet 4)

Figure 4.89-5: Process CAMEL_ICA_MSC (sheet 5)

Figure 4.89-6: Process CAMEL_ICA_MSC (sheet 6)

Figure 4.89-7: Process CAMEL_ICA_MSC (sheet 7)

Figure 4.89-8: Process CAMEL_ICA_MSC (sheet 8)

Figure 4.89-9: Process CAMEL_ICA_MSC (sheet 9)

Figure 4.90-1: Procedure CAMEL_ICA_MSC_ALERTING (sheet 1)

Figure 4.90-2: Process CAMEL_ICA_MSC_ALERTING (sheet 2)

Figure 4.90-3: Process CAMEL_ICA_MSC_ALERTING (sheet 3)

Figure 4.91-1: Procedure CAMEL_ICA_MSC_ANSWER (sheet 1)

Figure 4.91-2: Process CAMEL_ICA_MSC_ANSWER (sheet 2)

Figure 4.91-3: Process CAMEL_ICA_MSC_ANSWER (sheet 3)

Figure 4.92-1: Procedure CAMEL_ICA_MSC1 (sheet 1)

Figure 4.93-1: Procedure CAMEL_ICA_MSC2 (sheet 1)

Figure 4.94-1: Procedure CAMEL_ICA_Dialled_Services (sheet 1)

4.5.6.2 Handling of gsmSCF initiated calls in the VLR

Handling of gsmSCF initiated calls in the VLR involves the following process and procedures:

– Process CAMEL_ICA_VLR.

Figure 4.95-1: Process CAMEL_ICA_VLR (sheet 1)

Figure 4.95-2: Process CAMEL_ICA_VLR (sheet 2)