VoIP凭借通话费用低廉的优势越来越被广大用户关注,但仍然不能不提及我们在使用VoIP时遇到的诸多困扰。没有完善的Qos保障;通话会有被窃听、线路会有盗打的可能发生:电话接通有延时,接通成功率比较低;通话过程中有断续。分析产生这些情况的可能原因,希望技术早日成熟,为越来越多的用户服务。 With the advantages of low-cost calls, VoIP is attracting more and more users’ attention. However, we still can not but mention the troubles we encounter when using VoIP. There is no perfect Qos security; calls will be eavesdropped, there will be piracy of the line may occur: delayed telephone connection, connected success rate is relatively low; intermittent during the call. Analysis of the possible causes of these situations, hoping the technology matures early, serve more and more users.