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H.323, How to make a simple ring without a carrier. This script followed Q.931 setup but still did not work

Can anyone help me solve this problem? When I submit this request, I saw in wirehark that packets are being sent to SJPhone on port 1720 tcp. But still, SJPhone does not ring. I want to make this ring (regardless of media).

I would really appreciate your support. I need to skip message protocol information in order to implement this. Please show me some positive pointers.

FYI: I used this trace: 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(); } }

- Additional information: -When the SJPhone connection with SJPhone is associated with this log:

 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 is exchanged with SJPhone, I see these logs:

 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 ..^..... ....

Note:

A friendly dump can be performed using this command to see in real time + save what you saw: tcpdump -XX -s 0 -i lo | tee / tmp / log.log

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So, the question was only to send the ring without actually calling.

Here is the code that does the job. It was really fun to see when it started working:

 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(); } }
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