JPH03136445A - Terminal equipment using telephone line - Google Patents

Abstract

PURPOSE:To inform a fault of a telephone line to a supervisor or a resident by providing a telephone line fault detection section and a display section. CONSTITUTION:An installation signal of an installation 7 to be monitored installed in a building in a remote monitor system using a telephone line is inputted to a control section is in a terminal equipment 1 and the control section 15 discriminates the installation signal and sends the result to a supervisory center 3 via a telephone line 2a, an telephone station 4 and a telephone line 2b. A telephone line fault detection section 11 is connected to the telephone line 2a in the telephone set 1 and when a fault takes place in the telephone line 2a, the telephone line fault detection section 11 activates a display section 12 and sends a signal to an external output line 6 so as to activate an external display device 5. Thus, an external person or a patrol party can simply discriminate a fault of a telephone line and confirms the fault for a telephone station.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a terminal device using a telephone line.

[Conventional technology]

A terminal device connected to a conventional telephone line (general subscriber line) does not have a display function when an abnormality occurs in the telephone line.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into account abnormalities in the telephone line connected to the terminal device, and the abnormality in the telephone line is only discovered when communication with the monitoring center is impossible.

An object of the present invention is to provide a terminal device using a telephone line, which has a function to constantly monitor the status of a telephone line connected to a terminal device, detect when an abnormality occurs in the telephone line, and further display a function. It is about providing.

[Means to solve the problem]

In order to achieve the above object, a telephone line abnormality detection section that detects an abnormality in the telephone line connected to the terminal device and a display section that displays the abnormality when the abnormality is detected are provided.

[Effect]

The telephone line abnormality detection section provided in the terminal device is a device that monitors the state of the telephone line from the telephone office connected to the terminal device. The telephone line abnormality detection unit constantly monitors the status of the telephone line connected to the terminal device, and if the telephone line is disconnected or becomes abnormal due to external factors, it determines that the telephone line is abnormal and activates the display unit. , displays an abnormality. This allows the manager and residents to be notified of any abnormality in the telephone line.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a system diagram of the present invention.

In FIG. 1, 1 is a terminal device, 11 is a telephone line abnormality detection unit,
12 is a display section, 13 is a detection signal line, 14 is an output line for display, 15 is a control section, 2a and 2b are telephone lines, 3 is a monitoring center, 4 is a telephone office, 5 is an external display, 6 is an external 7 is the equipment to be monitored, and 8 is the equipment signal line.

Next, the operation of this embodiment will be explained.

In a remote monitoring system using a telephone line, an equipment signal from a monitored equipment 7 installed in a building is input to a control unit 15 in a terminal device 1 via an equipment signal line 8. The control unit 15 determines equipment signals and sends them to the monitoring center 3.
Send to. In this transmission, the control unit 15 is connected to the telephone line 2a, the telephone office 4, and the telephone line 2b, and the control unit 15 is connected to the monitoring center 3.
When the line is connected, the signal sent from the control unit 15 is input to the monitoring center 3, and the monitoring function operates normally.

However, between the transmission of the signal and the input to the monitoring center 3, the telephone line etc. must be in normal condition at all times because the telephone station 4 and the telephone lines 2a and 2b are connected to the telephone station 4.
Due to an abnormality, disconnection of the telephone line 2a, etc., the line between the terminal device 1 and the monitoring center 3 will not be connected.

Now, a telephone line abnormality detection section 11 that detects the state of the telephone line between the telephone line 2a and the control section 15 is connected to the telephone line 2a in the terminal device 1 via the detection signal line 13. When an abnormality occurs in the telephone line 2a, the telephone line abnormality detecting section 11 makes a determination via the detection signal line 13, and operates the display section 12 via the display output line 14. Further, by sending a signal to the external output line 6 so as to activate the external display 5, it is possible to display an abnormality in the telephone line 2a.

〔Effect of the invention〕

According to the present invention, by immediately determining an abnormality in the telephone line and sending a signal to the display or external display, an outside person or an inspector (patrol) can easily determine the abnormality of the telephone line. It is possible to check the abnormality with the telephone office.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of a terminal device using a telephone line according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Terminal device, 2a... Telephone line, 3... Monitoring center, 4... Telephone office, 5... External display, 11...
...Telephone line abnormality detection section, 12...Display section. Figure 1

Claims (1)

[Claims] (1) Using a terminal device that detects abnormalities in equipment placed in the building, a monitoring center that receives signals sent from this terminal device, and a telephone line that connects the terminal device and the monitoring center. A terminal device using a telephone line, characterized in that the terminal device is provided with a telephone line abnormality detection section that detects an abnormality in the telephone line, and a display section that displays when an abnormality is detected.