When stored program controlled ( spc ) technology generalized . some of these . supplementary services were integrated into local exchanges . what allowed users to access services in the quick and transparent way we are already used to . and at the same time , allowed an increase in the operator - company revenues from a wider span of fees 當存儲控制程序技術得到普遍適用之后,其中的一些附加的服務融合到了地方的交互系統(tǒng)中,這就方便用戶能夠獲得我們現(xiàn)在早已習慣的快捷、清晰的服務,同時,也使得電話公司能通過從更廣的區(qū)域收取費用以增加其利潤。