摘要
随着以太网技术发展,传统的程控交换被新兴的IP话音(VoIP)交换所取代。介绍了一种符合国际标准的VoIP通信实现方法。该方法采用会话起始协议(SIP)进行会话控制,采用实时传输协议(RTP)进行音频媒体数据传输,采用G.729a算法进行话音压缩编解码,采用声卡进行话音采集播放。
With the fast developing ethernet technology, all kinds of services tend to be unified onthe Internet Protocol (IP) network. Traditional program controlled exchange is being replaced by the new voice over internet protocol (VolP). An implementing method for VoIP communication meeting the international standards is proposed. The method uses session initiation protocol (SIP) to control th.e sessions, real-time transport protocol (RTP) to transport audio data, G. 729a algorithm to encode and decode the speech data, and sound card to gather and play the vol.ce.
出处
《指挥信息系统与技术》
2012年第1期68-71,共4页
Command Information System and Technology
关键词
IP话音
会话起始协议
实时传输协议
G.729a算法
voice over internet protocol(VoIP)
session initiation protocol(SIP)
real-time trans-Port protocol(RTP)
G. 729a algorithm