证实: authenticate; corroborate; a ...信号: signal; semaphore; gun单元: unit; unit element; cell; lo ...证实信号: acknowledgment signal; confirmation signal闭塞证实信号: blocking-acknowledgement signal bla倒换证实信号: changeover acknowledgement signal倒回证实信号: changeback acknowledgement signal cba呼叫证实信号: call confirmation signal接收证实信号: reception confirmation signal解锁证实信号: unblocking-acknowledgement signal uba开启证实信号: unblocking acknowledgement占机证实信号: seizing-acknowledgement signal占用证实信号: seizing acknowledgement signal空信号单元: empty signal unit信号单元: signal element; signaling unit; su signal unit插入信号单元: fill-in signal unit初始信号单元: initial signal unit独立信号单元: alone signal unit (asu)多级信号单元: multilevel signal element多重信号单元: msu multiple signal unit复合信号单元: compound signal element后续信号单元: subsequent signal unit空闲信号单元: isu idle signal unit链路信号单元: link state signal unit起始信号单元: start signal element
