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设置但仍无效
有人可以帮我解决这个问题吗？ 当我发送此请求时，我已经在wireshark中看到数据包将在1720 tcp端口发送到SJPhone。 但是SJPhone仍然不响。 我想让它响起（无论是媒体）。
我非常感谢你的支持。 我必须缺少消息协议细节来实现这一点。 请给我一些积极的指示。
仅供参考：我使用过此跟踪： 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： – 当SJPhone与SJPhone通信我看到这个日志：
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.........
– 当这个test.java与SJPhone通信时，我看到这个日志：
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：
可以使用此命令完成友好转储，以查看实时+保存您所看到的内容：tcpdump -XX -s 0 -i lo | tee /tmp/log.log
所以，问题只是发送一个铃声，没有实际的呼叫。
这是一些完成这项工作的代码。 看它什么时候开始工作很有趣：
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(); } }