File list (Check if you may need any files):
example2
........\example2App.java
........\Example2GUI.java
........\example2Listener.java
example3
........\Example3App.java
........\Example3GUI.java
........\example3Listener.java
example_4
.........\Example_4App.java
.........\Example_4GUI.java
.........\Example_4Listener.java
example_5
.........\Example_5App.java
.........\Example_5GUI.java
.........\Example_5Listener.java
sipproxy
........\SipproxyApp.java
........\SipproxyGUI.java
........\SipproxyGUI.jbx
........\SipproxyListener.java
softphone1
..........\Softphone1App.java
..........\Softphone1GUI.java
..........\Softphone1Listener.java
softphone2
..........\Softphone2App.java
..........\Softphone2GUI.java
..........\Softphone2Listener.java
softphone3
..........\Softphone3App.java
..........\Softphone3GUI.java
..........\Softphone3Listener.java
splibraries
...........\Configuration.java
...........\SdpInfo.java
...........\SdpManager.java
...........\TonesTool.java
...........\VideoFrame.java
...........\VideoTool.java
...........\VoiceTool.java