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3. ISDN Technology Overview
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Table 8. Call Termination (Synchronous Example)
Function/Event
Action/Description
CCEV_DISCONNECTED
Unsolicited event generated when call is
terminated by network; initiates transition to
Disconnected state.
terminated by network; initiates transition to
Disconnected state.
cc_DropCall( )
Disconnects call specified by CRN. Initiates
transition to Idle state.
transition to Idle state.
*cc_GetBilling( )
Retrieves billing information
cc_ReleaseCall( )
Issued to release all resources used for call;
network port is ready to receive next call.
Causes transition to Null state.
network port is ready to receive next call.
Causes transition to Null state.
NOTES: 1.
* = Optional function
2.
There are no termination events in synchronous mode.