欧美性猛交xxxx乱大交hd,一级黄色大片免费观看,精品国产免费一区二区三区香蕉,免费视频二区,中国免费黄色片,91碰碰视频,亚洲21p

 首頁 > 新聞 > 專家觀點 >

國土資源視頻會議系統(tǒng)建設

2007-04-16 00:00:00   作者:   來源:   評論:0  點擊:








[1] [美]Ray Horak(杜大鵬等譯). Communications Systems and Networks(通訊系統(tǒng)與網(wǎng)絡),2003年.
[2] 李逢天.組建可擴張的CISCO互聯(lián)網(wǎng)絡.人民郵電出版社,2003年4月.
[3] 許榕生.劉寶旭,方楠.網(wǎng)絡嫌體.五洲傳播出版社,1999年.
Construction of Land and Resources Videoconference System
Yu Zhigang1,2
1.China University of Geosciences,Wuhan, Huhei, 430074
2.Information Center, Ministry of Land and Resources, Beijing, 100812
Abstract: This paper first introduces the history and development of the videoconference.then the related technologies
of it are analyzed and compared. Based on the present demand of land and resources administration and informatization,this
paper explainas the necessity of constructing land and resources videoconference system ,focusing on the design and advanced techniques of this system. The significance of constructing the videoconference system is explained in the last section of the paper.
Keywords: Videoconference;H.320;H.323; IP; QoS; SDH; MCU

國土資源部信息中心

相關閱讀:

分享到: 收藏

專題