In accordance with the provisions of the international federation, unified communications industry is a term used to describe the individual user for business or social purpose of control of various forms of contact and multimedia/media news management functions. These descriptions include any information or trade application, and use them to a user and use of the simulation is an individual, and the content of the visit to contact an independent personal message (mail box).
Communication is essential to eliminate obstructions. In its simplest form, the phone break time and distance of the obstacle, so people can real-time together in or near real-time communication. Now there are many other barriers to be solved. People can use many different devices (wireless phone, personal digital assistant/PDA], personal computers, computer] [thin client, etc.), and now there is a new form of communication, such as instant messages. The goal is to break the unified communications, so people can use these obstacles of different forms of communication, different media, different equipment is still can anyone, anywhere, anytime in communication.
Unified Communications (UC) contains many kinds of communication systems or model, including unity, cooperation and interaction, and information system, Real-time and near real-time communication and trade application.
- Unified message focuses on let users from a single mailbox independent access devices access voice, E-mail, fax and the other mixed media.
- Multimedia services including mixed media types of messages, such as video and audio clips and pictures, including short message service (SMS).
- Cooperation and interaction system focused on application software, for example, calendar, schedule, workflow, complete voice response (ivr), and other enterprise application software, to help the individual and group efficient communication.
- Real-time and real-time communication system focused on among individuals of application software or system are the basic communication, such as meetings, instant messaging, traditional and next-generation switches (PBX) and paging.
- Trading and information system is provided to meet entry mobile e-business, e-commerce, web, weather forecast, stock information, as well as other enterprise applications.

