Executive Intrusion - With Prior Validation

Step	API	Action/Result	Event
1	gc_MakeCall( )(with Intrusion IE)	--->
2		<---	GCEV_PROCEEDING(with Busy IE)
3	gc_SndMsg( )(SndMsg_Intrude)	--->
4	---	Intrusion succeeded<---	---GCEV_CONNECTED
5	---	Intrusion failed<---	---GCEV_DISCONNECTED

The procedure is as follows:

1. Application places an outgoing call using the gc_MakeCall( ) function to a busy extension with Intrusion Type set to the INTRUDE_PRIOR_VALIDATION value. See Table 67, Intrusion IE for the format of the Intrusion IE.
2. Receives call proceeding (GCEV_PROCEEDING) event with indication that the remote party was busy. Use the gc_GetSigInfo( ) function to retrieve the BUSY_IE value. See for more information. See Table 59, Intrusion IE for the format of the Busy IE.
3. Application sends intrude request using the gc_SndMsg( ) function. See the gc_SndMsg( ) function description in the Global Call API Library Reference and Section 2.36, gc_SndMsg( ) for ISDN-specific information.
4. Receives call connected (GCEV_CONNECTED) event. Call successfully intruded.
5. Receives call disconnected (GCEV_DISCONNECTED) event. Call was not intruded.

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