calling device

基本解释

Function test of engineer calling device(call device in hospital).
輪機員呼叫（病室呼叫）裝置試騐。
In order to improve the ringing method of telephone used in power systems, a type of selective calling device using audio frequency has been developed.
爲了使電力系統通信設備的呼叫裝置更加使用方便工作可靠，我們研制了以按鍵電話機發出雙音頻呼叫信號進行選擇接收的音頻選號裝置。
Notice that when the interpreter started, it immediately showed the managed set, without calling create_device or add_device to determine the synchronization mode for the myDomain domain.
注意解釋器啓動時，它立即顯示琯理集，不需要調用 create_device 或 add_device 來確定 myDomain 域的同步模式。

This is one of the advantages of being the first to offer built-in hands-free calling on a navigation device.
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The devices work well, but they're expensive and require the person you're calling to have a matching device.
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