This thesis is about delivering electronic messages. We propose a multi-services network – a fifth generation messaging system, a software system, designed to make delivery of electronic messages easier, more secure and efficient.
Our goals are to describe an "anytime, anywhere, any-persona and from any-device" multi-services system, which refers to the ability to send and receive electronic messages at any particular time using different kinds of personal identities and through a variety of devices wherever you are. These multi-services include various kinds of information such as voice, data, images and multi-media, any of which can be transferred on the wired and wireless computer networks such as LAN, WAN, and telecommunication networks such as telephone, fax and mobile etc. We will also specify what the most important characteristic features in this multi-services system are.
Today, there are a multitude of communication devices and corresponding means available to exchange electronic information. However, each of these devices and means has different capabilities. For a user wishing to transfer messages, they may have several different identities, such as several phone numbers or many E-mail addresses. In this thesis, we study how a fifth generation messaging system manages their identities, and maintains their privacy and security. Additionally, the location of a user and their preferred device may change at any time. Current information delivery integration systems, which send a message in a heterogeneous communication environment, are incomplete, insecure and inefficient. This fifth generation messaging system we define here offers improved efficiency, security and completeness.