4.4.3. Setting Call Parameters on a Per Call Basis

There are two ways to set call parameters on a per-call basis:

• Using gc_SetUserInfo( ) (with the duration parameter set to GC_SINGLECALL)
• Using gc_MakeCall( )

Using gc_SetUserInfo( )

The gc_SetUserInfo( ) function (with the duration parameter set to GC_SINGLECALL) can be used to set call parameter values for a single incoming call. At the end of the call, the values set as default values for the specified line device override these values. This is useful since the gc_AnswerCall( ) function does not have a parameter to specify a GC_PARM_BLK.

If a gc_MakeCall( ) function is issued after the gc_SetUserInfo( ), the values specified in the gc_MakeCall( ) function override the values specified by the gc_SetUserInfo( ) function. See Section 3.4.18, gc_SetUserInfo( ) for more information about the values of function parameters to set in this context.

Using gc_MakeCall( )

The gc_MakeCall( ) function can be used to set call parameter values for a call. The values set are only valid for the duration of the current call. At the end of the call, the values set as default values for the specified line device override the values specified by the gc_MakeCall( ) function.

See Section 3.4.11, gc_MakeCall( ) for more information about the values of function parameters to set in this context.

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