Chinese translation for "central office line"

电话总局用户线
小交换机中继线
用户线

Similar Words：

"central office code" Chinese translation, "central office engineering" Chinese translation, "central office equipment" Chinese translation, "central office exchange" Chinese translation, "central office inter working function" Chinese translation, "central office line trunk" Chinese translation, "central office of ecla" Chinese translation, "central office of information" Chinese translation, "central office switches" Chinese translation, "central office switching system" Chinese translation