Optical Transport Network (IMAGE) Optica Caption This is a Centre Tecnologic de Telecomunicacions de Catalunya ADRENALINE testbed showing a dual-layer MPLS-TP over an optical transport network controlled by an integrated stateful PCE and OpenFlow controller. Credit CTTC Optical Networking Area, Spain Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.