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目前家庭用户宽带互联网的接入方式主要有哪些?IP语音传送技术将给这些接入方式带来什么变化?电力线可以被用来打电话吗?一线多用代表了家庭用户宽带接入的发展趋势吗?
What are the main access methods of broadband Internet for home users? What changes will the IP voice transmission technology bring to these access methods? Can power lines be used to make calls? Does the use of multiple lines represent the development trend of broadband access for home users? ?