The traditional IP network is mainly used to transmit data services, using best-effort, connectionless technology, there is disorder to reach even the packet loss and delay jitter and so on. Less demanding of real-time data services, but the voice is real-time business, on the timing and delay requirements are stringent. Traditionally, voice quality is measured by subjective methods. It is mainly used in the ITU recommendations P.800 MOS indicators. ITU P.800 standard explanation of the different delay and data loss by the human response to the call. Measurement of objective criteria in establishing a voice has made significant progress. ITU Recommendation G.107 E-MODEL used to measure voice quality. E-MODEL tells us that there are two main factors that will affect the digital voice transmission on the WLAN, which is the time delay and data loss, disorder can be used to reach the issue be resolved RTP and RTCP technology, the following were to be introduced.
Microsoft-sponsored ODF converter project is still in development enables users to simultaneously deal with two kinds of document format converters. Competitive practices designed to prevent the United States in the former, Oracle is also showcase their products, the progress towards the SOA transformation. Oracle has announced the Fusion middleware software as the core of service-oriented architecture blueprint. Oracle will next couple of years into the existing software, services, and launched in 2008 and contains the underlying middleware software, application and service components of the Fusion architecture.