摘要
随着Internet的发展,语音越来越成为Internet的一个重要组成部分。本文介绍四种主要的VOIP实现技术:H.323,SIP,MGCP和H.248,然后分析和比较它们的优缺点。H.323由于协议本身的局限性,它的主导地位正在逐渐为MGCP技术所替代。MGCP技术是当前VOIP市场上的热点,而MEGACO/H.248则是将来VOIP网广泛接受的标准协议。
IP telephony has become an increasingly important part of Internet services. In the first place of this paper, we give a minute description of the four primary technologies: H. 323, SIP, MGCP and H. 248 for VOIP system. Analysis and comparison are made among them. As the matter stands, H. 323 is being out of favor, even if it is currently the predominant protocol. MGCP is in advance of the others in marketing. MEGACO/H. 248 is expected to win wide acceptance in future as the official standard from industrial and commercial circles.
出处
《计算机应用与软件》
CSCD
北大核心
2002年第9期51-53,共3页
Computer Applications and Software
