罗盘导线测量

1958年用户长途直拨（STD）系统由英国由女王伊丽莎白二世举行开机典礼，她在一个从布里斯托尔到爱丁堡的长途拨叫中与对方城市的市长通话。

数字键盘演变自转盘拨号器，而转盘拨号器则是1920年代人工接线员向直接拨号转变的产物。

rotary dial in which dialling preselected numbers is prevented telephone set

key selection (touch-tone dialling)

post-dialling delay【通信】

through dialling【通信】

dial key【通信】;dialling key【通信】

alternating current dialling equipment

direct dialling transmission, on the exchange side

automatic dialling mobile telephone system