电路交叉连接 CCC-Circuit Cross Connect ; ccc

电路交换连接类型 circuit-switched connection type ; CSCT ; Switched Connection Type

交接电路 cross connecting circuit

电路交换型连接 circuit switched connection

快连接电路交换 fast connect circuit switching

电路交换连接 circuit-switched connection

电路交换数据连接 Circuit-Switched Data link