Design and Deployment of VoIP Technology in Enterprise;

According to the advanced mode of VoIP technology,the paper analyzes the advantages and the disavantages of VoIP system,as well as the application of VoIP in school network.

According to the advanced mode of VoIP technology,the article analyzes the advantages and disadvantages of VoIP system when it applies to school network,and brings forward the plan to link education MAN.

The paper first define the VoIP (IP Phone), introduced IP Phone principle and related agreement and standard, analyzed the reason of rapid development of IP Phone, and believe the main power is not only the cheaper charged but also the respect of the fusion of PSTN, data network and cable TV network.

For this reason, significant effort is being expended on VoIP technologies.

Key Techniques in High Speed and Precision Grinding of Cam Axes;

Design scheme and key techniques for mechanical wireless inclinometer;

Key techniques for improving accuracy and benefits of progressive exploration in the complicated fault block areas of Jizhong region;

Design and key technology of mine low voltage intelligent controlled switch;

High speed milling machining and key technology system of mould;

Status and development of the precise progressive die key technology of the IT products;

Key Techniques of Wenxi Copmlex Zone in Rolling Exploration and Development;

The Current State and Key Technique of High Speed Machining;

How to Deep-going Grasp Some of the Key Technique of Semi-Solid Processing (SSP);