off hook circuit

简明释义

闭合电路

英英释义

例句

1.When the phone is lifted off the receiver, it activates the off hook circuit.

当电话被拿起时，它会激活摘机电路。

2.An off hook circuit is essential for signaling that a device is ready to communicate.

摘机电路对于信号设备准备好进行通信至关重要。

3.The off hook circuit ensures that the line is busy when a call is in progress.

当通话进行中时，摘机电路确保线路繁忙。

4.If the off hook circuit malfunctions, the phone may not be able to make calls.

如果摘机电路发生故障，电话可能无法拨打电话。

5.The technician checked the off hook circuit to troubleshoot the phone line issue.

技术人员检查了摘机电路以排除电话线路问题。

作文

In the world of telecommunications, various technical terms are pivotal for understanding how devices interact. One such term is the off hook circuit, which plays an essential role in the operation of telephones. To comprehend its significance, we must first delve into what it means and how it functions within a telephone system.The off hook circuit refers to a condition in which a telephone is taken off the receiver, indicating that a user is ready to make or receive a call. When the handset is lifted, it completes the circuit, allowing electrical signals to flow. This action not only signifies that the line is in use but also triggers various functions associated with the call process. For instance, when the circuit is activated, the phone can send a signal to the local exchange, alerting it that a call is being initiated.Understanding the mechanics behind the off hook circuit is crucial for anyone interested in telecommunications. The circuit itself is designed to detect the physical state of the telephone handset. When the phone is 'on hook', meaning the handset is resting on the base, the circuit remains open. Conversely, lifting the handset closes the circuit, transitioning it to the 'off hook' state. This simple yet effective mechanism allows the telephone network to manage calls efficiently.Moreover, the off hook circuit is not just limited to traditional landline phones. Modern smartphones and VoIP (Voice over Internet Protocol) systems also utilize similar concepts. In smartphones, for example, the act of tapping the call button or lifting the device to your ear can activate the necessary circuits to establish a connection. This evolution showcases how the fundamental principles of the off hook circuit continue to influence contemporary communication technologies.In addition to its primary function of indicating a call in progress, the off hook circuit can also play a role in other features. For instance, many telephones have built-in functionalities such as call waiting or three-way calling that rely on the status of this circuit. If a second call comes in while one is already in progress, the telephone's circuitry can recognize that the first line is still active due to the off hook circuit being closed.Furthermore, the implications of the off hook circuit extend beyond individual devices. In a broader context, it contributes to the overall efficiency of communication networks. By managing how calls are routed and ensuring that lines are not used simultaneously without proper handling, the circuit helps maintain the integrity of telecommunication systems.In conclusion, the off hook circuit is a fundamental component of telephone technology that enables users to connect with one another seamlessly. Its ability to signal when a phone is in use has been integral to both traditional and modern communication systems. As technology continues to advance, understanding the principles behind such circuits will remain vital for appreciating the complexities of our interconnected world. Whether you are using a classic rotary phone or the latest smartphone, the off hook circuit is a silent yet crucial player in the realm of communication, ensuring that our voices can travel across distances in real-time.

在电信世界中，各种技术术语对于理解设备如何相互作用至关重要。其中一个术语是摘机电路，它在电话的操作中发挥着重要作用。要理解它的重要性，我们必须首先深入了解它的含义以及它在电话系统中的功能。摘机电路指的是电话听筒被拿起的状态，这表明用户准备拨打或接听电话。当手柄被提起时，它完成了电路，使电信号能够流动。这一动作不仅表示线路正在使用，而且触发与通话过程相关的各种功能。例如，当电路被激活时，电话可以向本地交换机发送信号，提醒它正在发起通话。理解摘机电路背后的机制对于任何对电信感兴趣的人来说都是至关重要的。电路本身旨在检测电话听筒的物理状态。当电话处于“挂机”状态时，即听筒放在底座上，电路保持打开状态。相反，提起听筒则关闭电路，将其转换为“摘机”状态。这种简单而有效的机制使电话网络能够高效管理通话。此外，摘机电路不仅限于传统的固定电话。现代智能手机和VoIP（互联网协议语音）系统也利用类似的概念。例如，在智能手机中，点击拨号按钮或将设备抬到耳边的动作可以激活必要的电路以建立连接。这种演变展示了摘机电路的基本原理如何继续影响当代通信技术。除了其主要功能外，摘机电路还可以在其他功能中发挥作用。例如，许多电话具有内置功能，如呼叫等待或三方通话，这些功能依赖于该电路的状态。如果在进行一个通话时有第二个来电，由于摘机电路处于闭合状态，电话的电路可以识别出第一个线路仍然处于活动状态。此外，摘机电路的影响不仅限于单个设备。在更广泛的背景下，它有助于通信网络的整体效率。通过管理如何路由电话并确保线路不会同时被使用而没有适当处理，电路有助于维护电信系统的完整性。总之，摘机电路是电话技术的基本组成部分，使用户能够无缝连接。它能够发出电话正在使用的信号，对传统和现代通信系统都至关重要。随着技术的不断进步，理解这些电路背后的原理将继续对欣赏我们互联世界的复杂性至关重要。无论您使用的是经典的旋转电话还是最新的智能手机，摘机电路都是通信领域中一个安静而关键的参与者，确保我们的声音能够实时跨越距离传播。