Subscriber trunk dialling ( std ) is inaugurated in the uk by queen elizabeth ii when she speaks to the lord provost in a call from bristol to edinburgh 1958年用戶長(zhǎng)途直撥( std )系統(tǒng)由英國(guó)由女王伊麗莎白二世舉行開機(jī)典禮,她在一個(gè)從布里斯托爾到愛(ài)丁堡的長(zhǎng)途撥叫中與對(duì)方城市的市長(zhǎng)通話。
百科解釋
Subscriber trunk dialling (STD, also known as subscriber toll dialling) is a term for a telephone system allowing subscribers to dial trunk calls without operator assistance.