通过 AT 命令使用 C#.net 拨号 [英] Dial call using C#.net by AT Commands

问题描述

我想做一个c#程序，通过usb线连接到我的手机上，只需要打电话.我找到了如何通过 SerialPort 连接以及如何通过 AT 命令进行呼叫，但是当我运行我的程序并单击进行呼叫时，没有任何反应.这是我的代码，请帮助我:

I want to make a c# program that connects to my mobile phone by usb cable to make just a call. I found how to connect by SerialPort and how to make call by AT Commands, but when I run my program and click to make the call, nothing happens. This is my code, please Help me:

SerialPort SP = new SerialPort("COM3");
SP.BaudRate = 9600;
SP.Parity = Parity.None;
SP.DataBits = 8;
SP.StopBits = StopBits.One;
SP.RtsEnable = true;
SP.DtrEnable = true;
SP.Encoding = System.Text.Encoding.Unicode;
SP.ReceivedBytesThreshold = 1;
SP.NewLine = Environment.NewLine;
SP.Open();
SP.Write("ATDT 0999182542"+ Environment.NewLine);

SP.Close();

推荐答案

首先要查看你的调制解调器是否已连接，向端口发送一个 AT 命令.如果您收到 OK 作为响应，则表示您的调制解调器已连接.

First of all to see if your modem is connected, send an AT command to the port. If you get a OK as response, then it means your modem is connected.

拨打电话的语法是:

ATDYourphnumber;//不要忘记";"

示例:ATD9012345645;

所以你应该以同样的方式写入端口.

So you should write to the port the same way.

语法:

SP.WriteLine("ATD"+电话号码+";");

您可以使用 WriteLine 因为它也为 服务.

You can use WriteLine since that serves the too.

更新:如何查看调制解调器的响应:

Update: How to see the response from modem:

SP.Open( ) 之后;

string cmd = "AT";
SP.WriteLine(cmd + "
");
SP.Write(cmd + "
");
Thread.Sleep(500);
string ss= SP.ReadExisting();
if(ss.EndsWith("
OK
"))
  {
   MessageBox.Show("Modem is connected");
  }

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