4.3.8. gc_MakeCall( )

The SS7 call control library supports the timeout parameter, even in asynchronous mode.

The GC_MAKECALL_BLK data structure contains a cclib field. When the cclib field is set to zero, default values are used for all call setup parameters. When the cclib field is set to a pointer to an S7_MAKECALL_BLK data structure which contains parameters usually set in an Initial Address Message (IAM), the specified fields overwrite the default values in the IAM.

The S7_MAKECALL_BLK structure contains the following IAM parameters:

• destination_number_type
• destination_number_plan
• internal_network_number
• origination_phone_number
• origination_number_type
• oringination_number_plan
• calling_party_category
• origination_present_restrict
• origination_screening
• forward_call_indicators
• trans_medium_req
• satellite_indicator
• echo_device_indicator
• continuity_check_indicator

Note: Other parameters can be added using the gc_SetInfoElem( ) function. See Section 4.3.11, gc_SetInfoElem( ) for more information.

The gc_MakeCall( ) function can be used to request an in-call continuity check. The continuity_check_indicator in the S7_MAKECALL_BLK structure must be set to CCI_CC_REQUIRED so that Global Call will send an SS7 IAM message with continuity check to the network. See Section 5.10.2, Outbound Continuity Check for more information.

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