【摘要】 语音通常是采用UDP或RTP协议来传输的,但目前有些防火墙不开放UDP端口,这就阻碍了语音流安全地穿过防火墙,限制了防火墙内语音客户端同Internet上的语音客户端之间的语音互通。为了使得该情况下可以进行语音通信,就必须用TCP来传输语音。由于TCP的重传机制,将大大地影响语音的质量。该文对TCP协议传输语音进行了研究,并采用相关的机制来提高语音传输的质量。实验结果表明,现阶段采用TCP协议来传输语音是可行的。更多还原

【Abstract】 UDP or RTP protocol is usually adopted during voice transfer.But at present,some Firewalls block all UDP ports,therefore voice stream can not go through Firewalls.This situation prevents voice communication between private network and public network.In order to make voice communication in this condition,we must adopt TCP protocol.However,the retransfer mechanism of TCP greatly affects the quality of the voice.So we research on the voice transfer based on TCP protocol in this article,and take some measures to enhance the quality of the voice.Experimental results show that voice transfer based on TCP protocol is feasible.更多还原