基于IP的高速公路全程语音对讲系统-交通运输工程学报-长安大学.PDF

第 3卷　第 3期 交 通 运 输 工 程 学 报 Vol. 3　No. 3 2003年 9月 Journal of Traffic and Transportation Engineering Sep. 2003 : 1671-1637( 2003) 03-0084-04 IP 1 2 2 曹　伟 ,孙大跃 ,屈立成 ( 1. , 　710064; 2. , 　710064) 　: 语音对讲系统是高速公 调度指挥和收费监管的重要技术手段。通过分析高速公 收费、 通信、监控三大系统的技术构成,开发了一种基于数据网络平台的 IP语音对讲系统,系统由对讲话 机和相应的客户端软件、服务器端软件组成。实际使用表明,该系统不需要铺设专用传输链 ,很好 地解决了长距离、跨级别对讲的难题。 : 高速公 ; IP语音对讲;语音压缩传输;状态自适应 : U495　　　: A Expressway s overall intercom based on internet protocol 1 2 2 , - , - CAO Wei S UN Da y ao QU L i ch eng ( 1. School of Information Engineering, hang′an University, Xi′an 710064, hina; 2. , ′ , ′ 710064, ) Network enter hang an University Xi an hina Abstract: Intercom is an important technique for expressway s management and toll control. This paper discussed the technique structure of expressway s toll,communication and surveillance system developed a kind of intercom based on internet protocol The intercom is consist of spe-, . cial interphonewith serial interface, client software and server software. The practice shows that this intercom don t need to lay special transmission link, has a good performance to solve the dif- ficult problems of long distance transmission and multicast. 1 tab, 6 figs, 6 refs. Key words expressway intercom based on IP voice compress and transmission accommodate: ; ; ; oneself to new conditions Author resume: AO Wei( 1964-) , male,lecturer, 86-29-2336589, caowei@ chd. edu. cn. [2] 　　 , 1。 ,,