automatic central office 中文意思是什麼
automatic central office
解釋
自動電話局-
Automatic coin telephone service includes a telephone company central office that can complete all types of payphone calls automatically without an operator
自動投幣電話業務,包括電話公司市話局,可以不需要話務員而自動完成各種類型的公用電話。 -
Automatic line insulation testing. equipment located in a central office which sequentially tests lines in the office for battery crosses and grounds
自動線路絕緣測試。放置在市話局的設備,對市話局的線路進行線路交叉測試和對地測試。
分享友人