on environment and builds a Java Virtual Machine into the client mobile terminal. MExE enables a standardized open architecture for the MS (mobile station) includ- ing content and application download mechanisms and an environment to execute those applications. ETSI has determined that two technologies should be accommodated within the MExE framework: Wireless application protocol (WAP), which brings Internet content and advanced ser- vices to digital mobile phones and other mobile terminals. Java, which brings platform independence and built-in network awareness. On the network side, MExE comprises the WAP gateway. 9.7 THE NEEDS OF THE USER DOMAIN In this book the user is queen/king, SO these needs are crucial. Important needs are: Consumers: ease of use, single sign-on functionality, personalization, availability, secu- rity and service range. Business: Cost-efficient internal processes, mobility, personalization, IS and IT out- sourcing. 9.7.1 EASY-TO-USE-SERVICES The services must be easy to use, for example according to the 0,1,2,3 solution with single sign on to content in a personalized portal: No manuals needed for configuration. Device Management and configuration are per- formed by means of an OTA server. 1. One-button access to mobile Internet (AAA, single sign-on, MSISDN forwarding, handsets with a mobile Internet button and support for OTA or equivalent). 2. Two seconds to access personalized portal. 3. Three clicks to desired content on personalized portal. 9.7.2 SINGLE SIGN ON It is tedious to log in to many different services. Single sign on enables a single secure log-on. Understanding Changing Telecommunications - Building a Successful Telecom Business Single sign on has evolved as a cost-saving solution to minimize support calls, and at the same time simplifies the administrative process of authentication and authorization. For a large enterprise, as the number of passwords each user is required to maintain increases, SO do the support calls. With each of these calls having an associated operat