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380
Aborting cc_MakeCall( )
When a B channel negotiation is used in call setup, the application must select
CCEV_PROCEEDING as the termination point for the cc_MakeCall( ) function
or use the asynchronous programming model. The following scenario illustrates a
case where the application uses an asynchronous model to abort the
cc_MakeCall( ) attempt.
Asynchronous Programming
Application Device driver State Firmware Network
NULL
cc_MakeCall( )
-->
CRN assigned
Call_Outgoing
-->
CALL_OUTGOING
(request for
channel "x")
-->
Set Up
-->
CCEV_PROCEEDING
(indicating the
network requested
channel)
<--
DIALING CALL_PROCEEDING
(network wishes to
use a B channel
other than "x")
<--
Proceeding
<--
cc_DropCall( )
-->
Call_Disconnected
(cause value = 1)
-->
IDLE
B channel
disconnected
CALL_DISC
-->
disconnect
-->
Continue the
"disconnect"
process described
below in the
"Application
Terminated Call"
table
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