diff --git a/openvidu-java-client/src/main/java/io/openvidu/java/client/Connection.java b/openvidu-java-client/src/main/java/io/openvidu/java/client/Connection.java
index da194f85..bef16873 100644
--- a/openvidu-java-client/src/main/java/io/openvidu/java/client/Connection.java
+++ b/openvidu-java-client/src/main/java/io/openvidu/java/client/Connection.java
@@ -153,7 +153,7 @@ public class Connection {
 	 * <strong>Only for
 	 * {@link io.openvidu.java.client.ConnectionType#IPCAM}</strong>
 	 */
-	public boolean adaptativeBitrate() {
+	public Boolean adaptativeBitrate() {
 		return this.connectionProperties.adaptativeBitrate();
 	}
 
@@ -169,7 +169,7 @@ public class Connection {
 	 * <strong>Only for
 	 * {@link io.openvidu.java.client.ConnectionType#IPCAM}</strong>
 	 */
-	public boolean onlyPlayWithSubscribers() {
+	public Boolean onlyPlayWithSubscribers() {
 		return this.connectionProperties.onlyPlayWithSubscribers();
 	}
 
@@ -185,7 +185,7 @@ public class Connection {
 	 * <strong>Only for
 	 * {@link io.openvidu.java.client.ConnectionType#IPCAM}</strong>
 	 */
-	public int getNetworkCache() {
+	public Integer getNetworkCache() {
 		return this.connectionProperties.getNetworkCache();
 	}
 
diff --git a/openvidu-java-client/src/main/java/io/openvidu/java/client/OpenVidu.java b/openvidu-java-client/src/main/java/io/openvidu/java/client/OpenVidu.java
index d657dbec..b91d21df 100644
--- a/openvidu-java-client/src/main/java/io/openvidu/java/client/OpenVidu.java
+++ b/openvidu-java-client/src/main/java/io/openvidu/java/client/OpenVidu.java
@@ -199,7 +199,7 @@ public class OpenVidu {
 		JsonObject json = new JsonObject();
 		json.addProperty("session", sessionId);
 		json.addProperty("name", properties.name());
-		json.addProperty("outputMode", properties.outputMode().name());
+		json.addProperty("outputMode", properties.outputMode() != null ? properties.outputMode().name() : null);
 		json.addProperty("hasAudio", properties.hasAudio());
 		json.addProperty("hasVideo", properties.hasVideo());