Definition of dialling tone

dialling tonenoun

âm báo quay số

/ˈdaɪəlɪŋ təʊn//ˈdaɪəlɪŋ təʊn/

The term "dialling tone" refers to the sound that is heard when making a telephone call. This specific sound has a unique frequency and rhythm that helps to establish a connection between the calling and receiving parties. The origin of the dialling tone can be traced back to the early days of telephone communication in the late 19th century. At that time, telephones were connected through mechanical switches and required a separate line for each connection. This made the process of connecting calls quite complicated and time-consuming. In the 1920s, electronic switching systems were introduced, which allowed multiple calls to be handled simultaneously on a single line. These systems used a specific tone, known as the dialling tone, to signal to the caller that the line was clear and available. The dialling tone first appeared as a high-pitched beep in the early days of electronic switching systems. It evolved over time to become a lower-pitched tone with a specific cadence, which has become the standard dialling tone heard today. The dialling tone serves an important function in modern telephone communication, as it helps to distinguish between a dial tone (signaling a connected line), a busy tone (indicating the line is currently in use), and a ringback tone (signaling that the called party's phone is ringing). In summary, the dialling tone originated as a signal for electronic switching systems in the 1920s, and has since become an integral part of the modern telephone experience.

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Example:
  • As soon as she picked up the phone, she heard the familiar dialling tone before someone answered.

    Ngay khi cô nhấc điện thoại lên, cô nghe thấy tiếng chuông gọi quen thuộc trước khi có người trả lời.

  • The dialling tone echoed through the empty room as he waited for someone to pick up.

    Tiếng chuông điện thoại vang vọng khắp căn phòng trống khi anh đang chờ ai đó bắt máy.

  • She hesitated before dialling, listening to the tone as she debated whether or not to make the call.

    Cô do dự trước khi bấm số, lắng nghe giọng điệu trong khi cân nhắc xem có nên gọi điện hay không.

  • As he began dialling, the dialling tone felt almost comforting, a signal that he was making progress.

    Khi anh bắt đầu quay số, âm thanh quay số nghe gần như an ủi, một tín hiệu cho thấy anh đang tiến triển.

  • The dialling tone pierced through the silence of the late night as he tried to reach his sister.

    Tiếng chuông điện thoại xuyên thủng sự im lặng của đêm khuya khi anh cố gắng liên lạc với em gái mình.

  • The dialling tone continued for what seemed like an eternity before she finally picked up.

    Tiếng chuông điện thoại cứ kéo dài tưởng chừng như vô tận cho đến khi cô ấy nhấc máy.

  • He dialled her number, and the dialling tone vanished into silence as she picked up almost immediately.

    Anh bấm số điện thoại của cô, tiếng chuông điện thoại đột nhiên im bặt khi cô nhấc máy ngay lập tức.

  • The dialling tone barely registered in her mind as she was already eager to speak to her loved one.

    Tiếng chuông điện thoại gần như không lọt vào tâm trí cô vì cô đã rất háo hức được nói chuyện với người mình yêu.

  • He tried dialling her number again, careful to avoid the frustrating silence of the disconnected dialling tone.

    Anh cố gắng bấm số cô lần nữa, cẩn thận tránh sự im lặng khó chịu của tiếng chuông báo cuộc gọi bị ngắt kết nối.

  • As the dialling tone filled the room, she remembered the last time she heard it, and tears welled up in her eyes.

    Khi tiếng chuông điện thoại vang lên khắp căn phòng, cô nhớ lại lần cuối cùng mình nghe thấy nó, và nước mắt trào ra.