术语 | equipment engaged tone |
释义 | equipment engaged tone 设备忙音 An audible signal sent to a caller to indicate that a call cannot be completed, owing to congestion in some part of the network. In many systems busy tone is used for this purpose. 由于网络某些部分发生了阻塞故障,送给呼叫者的一种音频信号,表示呼叫失败。在许多 系统中都使用忙音。 |
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