论文部分内容阅读
美国电话电报公司目前正在发展一项技术,使你无论是在家里还是在路上都可以使用同一部电话。这项名为“天使工程”的技术核心是一台比萨饼盒大小的无线电收发器,它装在房屋的一侧。这台收发器以无线电方式(波段为10兆赫兹同更大的街区天线连接,一个这样的天线可为2000户用户提供服务。这种天线又连接着可以替你发送讯号的数字转换中心。这项技术预计两年内可投入使用;每个用户最初将拥有两部电话,并能以高达每秒128000字节的速度进入互联网络。已有的按键式电话仍然可以在这项服务中使用。移动电话可以作为内部分机使用,这又使其用途更为广泛。或者你也可以告别有线电话,无论在家里或是在旅途
AT&T is currently developing a technology that allows you to use the same phone at home or on the road. The technical core, called “Angel Engineering,” is a pizza box-sized radio transceiver mounted on one side of the house. The transceiver is connected to the radio by a 10 MHz band with a larger block antenna. One such antenna can serve 2,000 users. This antenna is connected to a digital conversion center that can send signals for you. The technology is expected to be operational within two years; each user will initially have two phones and can access the Internet at a rate of up to 128,000 bytes per second. Existing touch-tone phones can still be used in this service. The phone can be used as an internal extension, which in turn makes it more versatile, or you can also say goodbye to a wired phone, whether at home or on the go.