diff --git a/LinphoneCallImpl.java b/LinphoneCallImpl.java
index b027e2170..db8b3f733 100644
--- a/LinphoneCallImpl.java
+++ b/LinphoneCallImpl.java
@@ -80,7 +80,6 @@ class LinphoneCallImpl implements LinphoneCall {
 	public void enableCamera(boolean enabled) {
 		enableCamera(nativePtr, enabled);
 	}
-	@Override
 	public boolean cameraEnabled() {
 		return cameraEnabled(nativePtr);
 	}
@@ -127,4 +126,8 @@ class LinphoneCallImpl implements LinphoneCall {
 	public boolean areStreamsEncrypted() {
 		return areStreamsEncrypted(nativePtr);
 	}
+	public boolean isInConference() {
+		// TODO Auto-generated method stub
+		return false;
+	}
 }
diff --git a/LinphoneCoreImpl.java b/LinphoneCoreImpl.java
index d4b54b663..20d18e90e 100644
--- a/LinphoneCoreImpl.java
+++ b/LinphoneCoreImpl.java
@@ -20,6 +20,7 @@ package org.linphone.core;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.List;
 import java.util.Vector;
 
 import org.linphone.LinphoneManager;
@@ -491,16 +492,58 @@ class LinphoneCoreImpl implements LinphoneCore {
 	public void enableEchoLimiter(boolean val) {
 		enableEchoLimiter(nativePtr,val);
 	}
-	@Override
 	public void setVideoDevice(int id) {
 		Log.i("Setting camera id :", id);
 		if (setVideoDevice(nativePtr, id) != 0) {
 			Log.e("Failed to set video device to id:", id);
 		}
 	}
-	@Override
 	public int getVideoDevice() {
 		return getVideoDevice(nativePtr);
 	}
+	public void addAllToConference() {
+		// TODO Auto-generated method stub
+		
+	}
+	public void addToConference(LinphoneCall call) {
+		// TODO Auto-generated method stub
+		
+	}
+	public void enterConference() {
+		// TODO Auto-generated method stub
+		
+	}
+	public List getCalls() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+	public int getCallsNb() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+	public int getConferenceSize() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+	public boolean isInConference() {
+		// TODO Auto-generated method stub
+		return false;
+	}
+	public void leaveConference() {
+		// TODO Auto-generated method stub
+		
+	}
+	public void removeFromConference(LinphoneCall call) {
+		// TODO Auto-generated method stub
+		
+	}
+	public void terminateAllCalls() {
+		// TODO Auto-generated method stub
+		
+	}
+	public void terminateConference() {
+		// TODO Auto-generated method stub
+		
+	}
 	
 }