--- /dev/null
+/*
+ * Copyright © 2017 Orange, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.transportpce.common.fixedflex;
+/**
+ * <p>
+ * Mapping 2.2 devices to Fixed flex.
+ * </p>
+ **/
+
+public interface FixedFlexInterface {
+ /**
+ * Calculates the center frequency, wavelength, start and stop for a wavelength number.
+ *
+ * @param index Wavelength number
+ * @return Returns FixedFlexImp object with the calculated result.
+ */
+ FixedFlexImpl getFixedFlexWaveMapping(long index);
+
+ double getCenterFrequency();
+
+ double getStart();
+
+ double getStop();
+
+ double getWavelength();
+
+ long getIndex();
+}
+