diff --git a/src/Main.java b/src/Main.java
index 7822332..fb8d8f5 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,17 +1,110 @@
 import org.pmw.tinylog.Logger;
 
+import java.io.File;
+import java.text.MessageFormat;
+
 public class Main {
     private static String serverAddress="100.64.0.3";
     private static String Username="user1";
     private static String Password="12345678";
-
+    private static jSIPClient client;
+    private static String currentDir;
     public static void main(String[] args) {
+        currentDir = System.getProperty("user.dir");
         GetArguments(args);
         Logger.info("Server Address: "+serverAddress);
         Logger.info("Username: "+Username);
         Logger.info("Password: "+Password);
 
+        client = new jSIPClient();
+        client.SetJavaSipEvent(new javaSipEvents() {
+            @Override
+            public void Registering(jSIPClient.SIP_Request req) {
+                Logger.info("Registering to SIP Server, Request: {}",req);
+            }
 
+            @Override
+            public void RegisterSuccesful(jSIPClient.SIP_Response resp) {
+                Logger.info("Registered to SIP Server, Response: {}",resp);
+            }
+
+            @Override
+            public void RegisterFailed(jSIPClient.SIP_Response resp) {
+                Logger.info("Failed to register to SIP Server, Response: {}",resp);
+            }
+
+            @Override
+            public void IncomingCall(jSIPClient.SIP_Request req, jSIPClient.SIP_Response resp) {
+                Logger.info("Incoming Call, Request: {}, Response: {}",req,resp);
+                client.AcceptIncomingCall(req);
+            }
+
+            @Override
+            public void RemoteHangUp(jSIPClient.SIP_Request req) {
+                Logger.info("Remote Hangup, Request: {}",req);
+                client.HangUp();
+            }
+
+            @Override
+            public void Ringing(jSIPClient.SIP_Response resp) {
+                Logger.info("Ringing, Response: {}",resp);
+            }
+
+            @Override
+            public void CalleePickup(jSIPClient.SIP_Response resp) {
+                Logger.info("Callee Pickup, Response: {}",resp);
+            }
+        });
+        ReconnectSIP();
+    }
+
+    @SuppressWarnings("unused")
+    private static void CallTest(String extension){
+        String callnumber = MessageFormat.format("sip:{0}@{1}", extension, serverAddress);
+        if (client.Call(callnumber)){
+            Logger.info("Call to {} is successful",callnumber);
+            try{
+                Thread.sleep(30*1000);
+            } catch (InterruptedException ignored) {
+            }
+            client.HangUp();
+        }
+        else{
+            Logger.error("Call to {} is failed",callnumber);
+        }
+    }
+
+    @SuppressWarnings("unused")
+    private static void StreamTest(String extension, String filename){
+        File ff = new File(currentDir, filename);
+        if (ff.isFile()){
+            String callnumber = MessageFormat.format("sip:{0}@{1}", extension, serverAddress);
+            if (client.StreamFile(callnumber, ff.getAbsolutePath())){
+                Logger.info("Stream to {} is successful",callnumber);
+                try{
+                    Thread.sleep(30*1000);
+                } catch (InterruptedException ignored) {
+                }
+                client.HangUp();
+            }
+            else{
+                Logger.error("Stream to {} is failed",callnumber);
+            }
+        } else Logger.error("File not found: {}",ff.getAbsolutePath());
+    }
+
+    private static void ReconnectSIP(){
+        if (client.Connect(serverAddress, Username, Password,"0.0.0.0")){
+            Logger.info("Connected to SIP Server");
+        }
+        else{
+            Logger.error("Failed to connect to SIP Server");
+            try {
+                Thread.sleep(20*1000);
+            } catch (InterruptedException ignored) {
+            }
+            ReconnectSIP();
+        }
     }
 
     private static void GetArguments(String[] args) {