Mohammad S. Obaidat, José Luis Sevillano, Eusebi Calle Ortega: DCNET 2011 and OPTICS 2011 - Proceedings of the International Conference on Data Communication Networking and International Conference on Optical Communication Systems, Seville, Spain, 18-21 July, 2011, DCNET & OPTICS are parts of ICETE - The International Joint Conference on e-Business and Telecommunications. SciTePress 2011, ISBN 978-989-8425-69-0