电话发明之初，其支持的技术仅仅是为了通话，当然也就相当的简单，而在发明电话一百多年后的今天，通信世界正经历着一场由科技创新所带来的革命。人们对通信的要求已不仅仅局限于传递声音，还要求能发送和接收声音、数据、图象等信息，并且要能方便携带。于是，各种各样的新 At the beginning of the invention of the phone, the technology it supported was merely for the call. Of course, it was quite simple. Today, more than one hundred years after the invention of the phone, the communications world is experiencing a revolution brought by technological innovation. People’s demand for communication has not only limited to the transfer of voice, but also requires the ability to send and receive voice, data, images and other information, and to be portable. So, a variety of new