static void RunCommTest() { TapiManager mgr = new TapiManager("EnumDevices"); mgr.Initialize(); foreach (TapiLine lineEx in mgr.Lines) { Console.WriteLine(lineEx.Name); } TapiLine line = mgr.GetLineByName("Conexant D110 MDC V.92 Modem", true); if (line != null) { line.Open(MediaModes.DataModem); TapiCall call = line.Addresses[0].MakeCall("2145551212"); Console.WriteLine(call.GetCommDevice()); try { using (FileStream fs = call.GetCommStream()) { byte[] data = ASCIIEncoding.ASCII.GetBytes("Hello"); fs.Write(data, 0, data.Length); using (StreamReader sr = new StreamReader(fs)) { Console.WriteLine(sr.ReadToEnd()); } } call.Drop(); } catch (Exception ex) { call.Drop(); while (ex != null) { Console.WriteLine("{0}", ex.ToString()); ex = ex.InnerException; } } } else { Console.WriteLine("Not found."); } Console.ReadLine(); mgr.Shutdown(); }