H.323，如何在没有媒体的情况下制作简单的铃声。此脚本遵循Q.931设置，但仍不起作用

Question

有人能帮我解决这个问题吗？当我发送此请求时，我在wireshark中看到数据包将通过1720TCP端口发送到SJPhone。但SJPhone仍然没有响铃。我想让它响起(与媒体无关)。

我真的很感谢你的支持。我一定是错过了实现这一点的消息协议细节。请给我一些积极的建议。

仅供参考:我使用过这个跟踪：http://www.vconsole.com/usermanuals/sample_isdn_trace.pdf

import java.io.*;
import java.net.*;
public class test 
{
    public static void main(String[] args) throws UnknownHostException, IOException 
    { 
        /* Step 1: simulate the Q.931 packets exchange */
        byte st[]=new byte[256];
        st[0]=0x08;    // protocol discriminator
        st[1]=0x02;    // length (bytes) of call reference
        st[2]=0x02;    // call reference (1-15 bytes)        
        // message type
        st[3]=0x05;            
        // information Elements
        st[4]=0x6C;     // calling party number
            st[5]=0;    // unknown
            st[6]=0;    // unknown
            st[7]=1;    // "1"
        // information elements
        st[8]=0x70;     // called party number 
            st[9]=0;    // unknown
            st[10]=0;   // unknown  
            st[11]=5;   // "5"
        System.out.println(st);

        /* Step 2: by-pass it for testing with tcpdump */
        Socket clientSocket           = new Socket("localhost", 1720);
        DataInputStream input         = new DataInputStream(clientSocket.getInputStream());          
        DataOutputStream outToServer  = new DataOutputStream(clientSocket.getOutputStream());
        BufferedReader inFromServer   = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
        outToServer.write(st);
        String get;
        get = inFromServer.readLine();
        System.out.println("FROM SERVER: " + get);
        clientSocket.close();        
    }
}

--更多信息：-When SJPhone to SJPhone通信我看到此日志：

0000  00 00 03 04 00 06 00 00 00 00 00 00 00 00 08 00   ................
0010  45 00 00 3c 88 6c 40 00 40 06 b4 4d 7f 00 00 01   E..<.l@.@..M....
0020  7f 00 00 01 b4 a8 06 b8 56 f6 c4 b3 00 00 00 00   ........V.......
0030  a0 02 80 18 fe 30 00 00 02 04 40 0c 04 02 08 0a   .....0....@.....
0040  02 a1 4c df 00 00 00 00 01 03 03 06               ..L.........

-When this test.java communicate to SJPhone我看到以下日志：

0000  00 00 03 04 00 06 00 00  00 00 00 00 00 00 08 00   ........ ........
0010  45 00 00 3c 1f ba 40 00  40 06 1d 00 7f 00 00 01   E..<..@. @.......
0020  7f 00 00 01 d6 ca 06 b8  8c e7 41 15 00 00 00 00   ........ ..A.....
0030  a0 02 80 18 fe 30 00 00  02 04 40 0c 04 02 08 0a   .....0.. ..@.....
0040  02 a6 5e af 00 00 00 00  01 03 03 06               ..^..... ....    

注意：

可以使用以下命令进行友好的转储，以查看实时并保存您所看到的内容: tcpdump -XX -s 0 -i lo | tee /tmp/log.log

Answer 1

因此，问题只是发送一个振铃，而没有实际的呼叫。

下面是完成这项工作的一些代码。当它开始工作时，看到它是非常有趣的：

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;

/**
 *
 * @author martijncourteaux
 */
public class SJPhoneRinger
{

    private static String setupOpenLogicChannel = "03|00|02|32|08|02|10|00|05|04|03|88|c0|a5|28|07|75|6e|6b|6e|6f|77|6e|6c|05|81|32|30|30|35|7e|02|11|05|20|88|06|00|08|91|4a|00|04|22|c0|00|00|00|00|0f|53|4a|20|4c|61|62|73|ae|20|53|4a|70|68|6f|6e|65|08|31|2e|36|30|2e|32|39|39|61|00|7f|00|00|01|06|b8|00|c4|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|00|c1|1d|80|04|11|00|f6|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|81|3a|0a|21|40|00|00|06|04|01|00|4e|0c|03|00|20|00|80|12|1e|00|01|00|7f|00|00|01|c0|04|00|7f|00|00|01|c0|05|00|2b|40|00|00|06|04|01|00|4c|10|00|00|00|00|09|69|4c|42|43|2d|31|33|6b|33|80|12|1e|40|01|00|7f|00|00|01|c0|04|00|7f|00|00|01|c0|05|04|2b|40|00|00|06|04|01|00|4c|10|00|00|00|00|09|69|4c|42|43|2d|31|35|6b|32|80|12|1e|40|01|00|7f|00|00|01|c0|04|00|7f|00|00|01|c0|05|08|1e|40|00|00|06|04|01|00|4c|20|13|80|12|1e|00|01|00|7f|00|00|01|c0|04|00|7f|00|00|01|c0|05|00|1e|40|00|00|06|04|01|00|4c|60|13|80|12|1e|00|01|00|7f|00|00|01|c0|04|00|7f|00|00|01|c0|05|00|16|00|00|0d|0e|0c|03|00|20|00|80|0b|06|00|01|00|7f|00|00|01|c0|05|00|20|00|00|0e|0c|10|00|00|00|00|09|69|4c|42|43|2d|31|33|6b|33|80|0b|06|40|01|00|7f|00|00|01|c0|05|04|20|00|00|0f|0c|10|00|00|00|00|09|69|4c|42|43|2d|31|35|6b|32|80|0b|06|40|01|00|7f|00|00|01|c0|05|08|13|00|00|10|0c|20|13|80|0b|06|00|01|00|7f|00|00|01|c0|05|00|13|00|00|11|0c|60|13|80|0b|06|00|01|00|7f|00|00|01|c0|05|00|01|00|01|00|01|00|01|00|6e|02|64|02|70|01|06|00|08|81|75|00|08|80|0d|00|00|3c|00|01|00|00|01|00|00|01|00|00|04|80|00|00|24|18|03|00|20|00|80|00|01|20|20|00|00|00|00|09|69|4c|42|43|2d|31|33|6b|33|80|00|02|20|20|00|00|00|00|09|69|4c|42|43|2d|31|35|6b|32|80|00|03|20|40|13|80|00|04|20|c0|13|00|80|06|00|04|00|00|00|01|00|02|00|03|00|04|07|01|00|32|80|d8|50|5f|02|80|01|80";
    private static String alertingTSCA = "03|00|00|d8|08|02|90|00|01|28|07|75|6e|6b|6e|6f|77|6e|7e|00|c3|05|23|c0|06|00|08|91|4a|00|04|22|c0|00|00|00|00|0f|53|4a|20|4c|61|62|73|ae|20|53|4a|70|68|6f|6e|65|08|31|2e|36|30|2e|32|38|39|61|00|5e|e0|cc|44|98|ff|0d|0c|11|00|f6|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|01|00|01|00|04|c0|01|80|74|04|03|21|80|01|64|02|70|01|06|00|08|81|75|00|08|80|0d|00|00|3c|00|01|00|00|01|00|00|01|00|00|04|80|00|00|24|18|03|00|20|00|80|00|01|20|20|00|00|00|00|09|69|4c|42|43|2d|31|33|6b|33|80|00|02|20|20|00|00|00|00|09|69|4c|42|43|2d|31|35|6b|32|80|00|03|20|40|13|80|00|04|20|c0|13|00|80|06|00|04|00|00|00|01|00|02|00|03|00|04|06|01|00|32|40|1b|33|02|20|80";
    private static String facilityTSCA = "03|00|00|62|08|02|10|00|62|1c|00|28|07|75|6e|6b|6e|6f|77|6e|7e|00|4b|05|26|90|06|00|08|91|4a|00|04|c4|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|86|01|00|13|05|80|11|00|f6|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|07|00|5e|e0|cc|44|ab|62|01|00|01|00|04|c0|01|80|08|02|03|21|80|01|02|20|a0";
    private static String connectOpenLogicChannel = "03|00|00|b6|08|02|90|00|07|28|07|75|6e|6b|6e|6f|77|6e|7e|00|a1|05|22|c0|06|00|08|91|4a|00|04|00|5e|e0|cc|44|98|ff|22|c0|00|00|00|00|0f|53|4a|20|4c|61|62|73|ae|20|53|4a|70|68|6f|6e|65|08|31|2e|36|30|2e|32|38|39|61|00|c4|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|0d|1c|11|00|f6|a1|56|3c|d2|1d|b2|11|a8|ed|b7|8a|c2|c1|98|8f|41|02|21|40|00|03|06|04|01|00|4e|0c|03|00|20|00|80|12|1e|00|01|00|7f|00|00|01|c0|04|00|5e|e0|cc|44|c0|07|00|1d|00|00|0d|0e|0c|03|00|20|00|80|12|1e|00|01|00|5e|e0|cc|44|c0|06|00|5e|e0|cc|44|c0|07|00|01|00|01|00|02|80|01|80";

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException
    {
        Socket socket = new Socket("localhost", 1720);
        System.out.println("Connected to SJPhone!");

        DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
        DataInputStream dis = new DataInputStream(socket.getInputStream());

        sendBytes(dos, setupOpenLogicChannel);

        /* Following three packages were not needed. It worked without them.
         * Of course, because it is only a sample ring request, SJPhone will tell you
         * That the call is corrupted */
//        sendBytes(dos, alertingTSCA);
//        sendBytes(dos, facilityTSCA);
//        sendBytes(dos, connectOpenLogicChannel);

        try
        {
            Thread.sleep(10000); // Let it ring for ten seconds.
        } catch (Exception e)
        {
        }
    }

    public static void sendBytes(OutputStream os, String bytes) throws IOException
    {
        String byteArrayStr[] = bytes.split("\\|");
        byte bytesArray[] = new byte[byteArrayStr.length];
        for (int i = 0; i < byteArrayStr.length; ++i)
        {
            bytesArray[i] = (byte) (Integer.parseInt(byteArrayStr[i],16));
        }
        os.write(bytesArray);
        os.flush();
    }


}