diff -r ed1c9f64298a -r 5b9d4d8641ce trace/traceviewer/com.nokia.traceviewer/src/com/nokia/traceviewer/engine/Connection.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/traceviewer/com.nokia.traceviewer/src/com/nokia/traceviewer/engine/Connection.java	Wed Jun 23 14:49:59 2010 +0300
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ * Connection interface
+ *
+ */
+package com.nokia.traceviewer.engine;
+
+/**
+ * Connection interface
+ */
+public interface Connection {
+
+	/**
+	 * Connect to media
+	 * 
+	 * @return true if connection succeeded, false otherwise
+	 */
+	public boolean connect();
+
+	/**
+	 * Creates a connection for given connection type. Types are taken from
+	 * com.nokia.traceviewer.engine.preferences.PreferenceConstants.java
+	 * 
+	 * @param connectionType
+	 *            connection type from
+	 *            com.nokia.traceviewer.engine.preferences.PreferenceConstants
+	 *            .java
+	 * @param parameters
+	 *            connection parameters. When using TCP connection, parameters
+	 *            are IP address, port number and channel number in this order.
+	 *            When using USB serial connection, the only parameter is the
+	 *            COM port number.
+	 * @param filePath
+	 *            file path where the binary file is created
+	 * @return true if connection was succesfully created, false otherwise
+	 */
+	public boolean createConnection(String connectionType, String[] parameters,
+			String filePath);
+
+	/**
+	 * Disconnect from media
+	 * 
+	 * @return true if disconnect succeeded, false otherwise
+	 */
+	public boolean disconnect();
+
+	/**
+	 * Indicates the status of the connection
+	 * 
+	 * @return true if connection is up, false otherwise
+	 */
+	public boolean isConnected();
+
+	/**
+	 * Writes message to connection
+	 * 
+	 * @param byteArray
+	 *            byte array containing data
+	 * @return true if writing succeeded, false otherwise
+	 */
+	public boolean write(byte[] byteArray);
+}