// The custom handler for interpreting various event types from TServer
private void TsHandler(object sender, TServerBufferEventArgs e)
{
// Ringing call
if (e.EventClass == Csta.CSTAUNSOLICITED && e.EventType == Csta.CSTA_DELIVERED)
{
isRinging();
}
// Disconnected call
else if (e.EventClass == Csta.CSTAUNSOLICITED && e.EventType == Csta.CSTA_CONNECTION_CLEARED)
{
isDisconnected();
}
// Connected call
else if (e.EventClass == Csta.CSTAUNSOLICITED && e.EventType == Csta.CSTA_ESTABLISHED)
{
isConnected();
}
// Dialed call
else if (e.EventClass == Csta.CSTAUNSOLICITED && e.EventType == Csta.CSTA_NETWORK_REACHED)
{
isDialed();
}
// Message waiting indicator update
else if (e.EventClass == Csta.CSTACONFIRMATION && e.EventType == Csta.CSTA_QUERY_MWI_CONF)
{
mwiStatus();
}
}
// Check the TServer event buffer
public void checkTServer()
{
// Define the mandatory (unused) private data buffer
Csta.PrivateData_t privData = new Csta.PrivateData_t();
privData.vendor = "MERLIN ".ToCharArray();
privData.length = 4;
privData.data = "N".ToCharArray();
// Define the event buffer that contains data passed back from TServer
eventBuf = new Csta.EventBuf_t();
ushort numEvents = 0;
ushort eventBufSize = (ushort)Csta.CSTA_MAX_HEAP;
// Poll the event queue to see if any call events are occurring
try
{
int polledEvent = Csta.acsGetEventPoll(acsHandle, ref eventBuf, ref eventBufSize, ref privData, ref numEvents);
}
catch (System.Exception eEventPoll)
{
// If we can't get back a confirmation record the error and inform the user
MessageBox.Show("There was a TServer error. Logging the incident and continuing the application.", "TServer Error");
if (!EventLog.SourceExists(strSource))
{
EventLog.CreateEventSource(strSource, strLog);
}
EventLog.WriteEntry(strSource, eEventPoll.Message.ToString(), EventLogEntryType.Warning, 234);
return;
}
// Parse out the data elements in the event buffer...
// The event header
UInt32 numAcsHandle = BitConverter.ToUInt32(eventBuf.data, 0);
ushort numEventClass = BitConverter.ToUInt16(eventBuf.data, 4);
ushort numEventType = BitConverter.ToUInt16(eventBuf.data, 6);
TServerBufferEventArgs args = new TServerBufferEventArgs(numEventClass, numEventType);
this.TServerBufferPoll(this, args);
}
