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Terms for subject Information technology containing 呼叫 信 号 | all forms | in specified order only
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前向呼叫信号ring forward signal
呼叫[连接]控制信号call control signal
呼叫不接收信号call not accepted signal
呼叫接通信号call up signal
呼叫进程信号call progress signal
接受呼叫信号call accepted signal