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IP电话是按国际互联网协议规定的网络技术内容开通的电话业务,它是利用国际互联网Internet为语音传输的媒介,从面实现语间通信的一种全新的通信技术。由于IP电话的通话费用要比普通电话的低很多,因此它成为扩大电信客户在拨打长途电话时的首选,我们在使用IP电话是会发现它的通话质量比普通电话的要差一些,到底是什么原因影响了IP电话的通话质量呢?其实影响IP电话通话质量的原因主要涉及(?)大问题:回波、抖动与延迟。
IP phone is a telephone service opened according to the network technology content stipulated by the Internet Protocol. It is a brand-new communication technology that uses the Internet as a medium for voice transmission and realizes inter-language communication from the Internet. Because IP phone calls are much cheaper than regular phones, it is the first choice for expanding telecommunications customers when making long distance calls. We use IP phones to find that their call quality is worse than that of regular phones. What causes the quality of IP phone call? In fact, the main reason for affecting the quality of IP phone call involves (?) Big problems: echo, jitter and delay.