Another trend is towards phones that double as both fixed and mobile devices, using cellular networks when outdoors and switching to fixed networks, accessed via a short-range radio link to a small basestation, when indoors.
Another trend is towards phones that double as both fixed and mobile devices, using cellular networks when outdoors and switching to fixed networks, accessed via a short-range radio link to a small basestation, when indoors.
另一个趋势是电话会兼作移动设备与固定设备，在室外使用蜂窝式网络，而进入室内时，可通过短程电波接入小型基站切换至固话网络。