Appendix A - Call Control Scenarios
389
Application Device Driver State Firmware Network
cc_MakeCall()--> Host CRN # 1
assigned
Call_Outgoing
-->
NULL
Firmware CRN #1
is assigned
CALL_OUTGOING
-->
Set up
-->
cc_DropCall()
--> Call_Dis
-->
CCEV_DROPCALL
<-- IDLE CALL_CLEARED
<--
cc_ReleaseCall( ) Call_Dealloc
--> NULL
Host CRN #1
released Firmware CRN #1
released
CALL_DEALLOC_AC
K<--
*Application may connect a voice channel to the B channel.
**Application can use cc_ResultValue( ) to determine cause value for disconnect
(ERR_ISDN_CAUSE).