The book "E-Business and Telecommunication Networks" brings together the most outstanding contributions from the second International Conference on E-Business and Telecommunications Networks (ICETE), which took place in 2005 at the Microsoft Research Centre in Reading, United Kingdom. Organized by INSTICC in collaboration with the University of Westminster, the conference aims to promote the exchange of expertise among professionals in the fields of e-business and telecommunications networks. The topics covered include security aspects, wireless systems, signal processing, and various applications that integrate new services and technologies into consumers' lives. The conference brought together researchers and developers from academia and industry to engage in dialogue about the challenges and developments in these dynamic fields. The four parallel tracks of the conference addressed different aspects, including global communication systems, security in information systems, wireless communication systems, and multimedia signal processing.