public void WaitForCall()
{
try
{
if (!this.IsOpen)
{
this.Open();
}
if (!this.IsOpen)
{
throw new Exception("Cannot open com port");
}
// Force the DTR line high, used sometimes to hang up modems
this.DtrEnable = true;
this.RtsEnable = true;
// Trigger the OnComm event whenever data is received
this.ReceivedBytesThreshold = 1;
//
_status = EnumModemStatus.WaitCaller_Reset;
this.Write("\rATZ\r");
}
catch (Exception e)
{
if (this.OperationError != null)
{
_error = e.Message;
OperationError(this, EventArgs.Empty);
}
this.DtrEnable = false;
this.RtsEnable = false;
}
}
public void TestBySimulation(string messageFeedFile)
{
if (string.IsNullOrEmpty(messageFeedFile))
{
if (OperationError != null)
{
_error = "message feed file not provided";
OperationError(this, EventArgs.Empty);
}
}
else if (!File.Exists(messageFeedFile))
{
if (OperationError != null)
{
_error = "message feed file does not exist";
OperationError(this, EventArgs.Empty);
}
}
else
{
try
{
_status = EnumModemStatus.WaitCaller_Reset;
_testing = true;
StreamReader sr = new StreamReader(messageFeedFile);
while (!sr.EndOfStream)
{
_testSignal = string.Format(CultureInfo.InvariantCulture, "{0}\r", sr.ReadLine());
if (!string.IsNullOrEmpty(_testSignal))
{
processMessage();
}
}
sr.Close();
}
catch (Exception err)
{
_error = err.Message;
OperationError(this, EventArgs.Empty);
}
_testing = false;
}
}
private void processEvent()
{
if (_signal.Length > 0)
{
string cmd = _signal.ToString();
if (cmd.StartsWith("OK", StringComparison.Ordinal))
{
_signal.Length = 0;
cmd = cmd.Substring(2);
_signal.Append(cmd);
if (OK != null)
{
OK(this, EventArgs.Empty);
}
if (_status == EnumModemStatus.WaitCaller_Reset)
{
_status = EnumModemStatus.WaitCaller_EnableCallerID;
if (!_testing)
{
this.Write(this.CallerIDCommand + "\r");
}
}
else if (_status == EnumModemStatus.WaitCaller_EnableCallerID)
{
_status = EnumModemStatus.WaitCaller_Wait;
}
}
else if (cmd.StartsWith("ERROR", StringComparison.Ordinal))
{
_signal.Length = 0;
cmd = cmd.Substring(5);
_signal.Append(cmd);
_status = EnumModemStatus.WaitCaller_Error;
if (OperationError != null)
{
OperationError(this, EventArgs.Empty);
}
}
else if (cmd.StartsWith("RING", StringComparison.Ordinal))
{
_signal.Length = 0;
cmd = cmd.Substring(4);
_signal.Append(cmd);
if (Ring != null)
{
Ring(this, EventArgs.Empty);
}
}
else
{
if (_status == EnumModemStatus.WaitCaller_Wait)
{
if (cmd.Length > 7)
{
if (cmd.StartsWith("NMBR", StringComparison.Ordinal))
{
_callerId = cmd.Substring(7).Trim();
_signal.Length = 0;
if (GotCallerID != null)
{
GotCallerID(this, EventArgs.Empty);
_status = EnumModemStatus.WaitCaller_GotCallerId;
}
}
}
}
else
{
if (cmd.Length > 0)
{
checkWatchSignals(cmd);
}
}
}
}
}
