JPS61103325A - Communication equipment with fault detection - Google Patents

Abstract

PURPOSE:To grasp quickly a faulty state at a station operating an exchange by providing a means detecting that a communication line is grounded due to a fault and informing it. CONSTITUTION:If a fault takes place in a communication cable and the cable is grounded to ground with a low impedance 5, an earth detection section 7 detects the said fault at first. Then a light emitting section 6 displays the result of detection by light to display generation of the fault. Then the station operating an exchange 1 gradps quickly the faulty state. Further, a speaker or the like is used in place of the light emitting section 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to communication equipment such as exchanges, and more particularly to communication equipment equipped with a detection circuit that detects when a communication line has fallen to the ground due to a line failure.

[Conventional technology]

2. Description of the Related Art Conventional communication equipment, such as a switchboard, will be explained with reference to FIGS. 2 and 8.

In FIG. 2, the exchange ml includes a subscriber circuit device 2, which is connected to a terminal 8 via a communication cable number. Furthermore, subscriber circuit equipment i
is equipped with an earth air detection section 7, and the earth air detection section 7 of and detects that the communication cable 4 has fallen to the ground due to a communication failure.

[Problem that the invention seeks to solve]

In the above-mentioned communication equipment, if a failure occurs in the communication cape Jv4 due to various accidents such as a traffic accident or a water leak,
Due to the decrease in the impedance to the ground, a low impedance 5 is formed between the ground and the ground as shown in FIG. Then, the geodetection unit 7 detects these faults, but since there is no means to notify them, various troubles occur on the subscriber side, and the station operating the exchange 1 receives calls from the subscriber. The problem was that there was a flood of complaints.

[Means for solving problems]

A communication device with a failure detection function according to the present invention includes a detection circuit that detects that a communication line has fallen to the ground due to a failure, and a notification means that reports a result detected by this detection circuit. If there is a failure in the communication line, this failure will be detected and the details of the failure will be displayed on the lamp, light emitting diode,
It is set to be announced via a speaker or the like.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment in which the present invention is applied to an exchange. Here, as in FIG. 2, the exchange 1 includes a subscriber circuit device 2, which is connected to a terminal 8 via a communication cable 4. The subscriber circuit device 2 includes a ground air detection section 7,
This ground air detection section 7 detects that the communication cable 4 has fallen to the ground due to a communication failure. Further, the subscriber circuit device 2 is provided with a light emitting section 6 for notifying the detection result of the earth air detection section 7. As the light emitting section 6, a light emitting diode, a lamp, etc. are used.

In this embodiment, when a failure occurs in the communication cable 4,
If there is a ground fault with low impedance 5 to the earth, “I”,
1a. B1. ．． E□Yo, Ayu. □, □.

Then, the light emitting unit 6 displays this detection result with light to notify the user of the occurrence of a fault. Therefore, the station operating the exchange ML can quickly grasp the failure state and provide good service to subscribers.

Note that by using a speaker or the like instead of the light emitting unit 6, the failure state may be communicated through sound.

〔Effect of the invention〕

As explained above, the present invention is particularly applicable to exchanges by providing means for detecting the occurrence of a failure and notifying the detection result when a communication line falls to the ground with low impedance due to the occurrence of a failure. When applied, the station side can grasp the failure condition earlier than the subscriber, and therefore the station side can provide good service to the subscriber regarding this failure condition, thereby preventing various troubles from occurring on the subscriber side. You can prevent it from happening.

[Brief explanation of drawings]

Figure 1 shows a case where the present invention is applied to a switching equipment.
2 is a block diagram showing an example of a conventional exchange, and FIG. 8 is a diagram showing an equivalent circuit when a failure occurs in the communication cable in the conventional example of FIG. 2. 1......exchange machine. 2...Subscriber circuit device. 8...Terminal device. ４・・・・・・・・・Communication cable. 5...Low impedance. 6...... Light emitting part. 7... Earth detection section. Patent applicant: NEC Corporation 2゜Representative: Susumu Uchihara, patent attorney
Fig. 1 Fig. 3

Claims (1)

[Claims] What is claimed is: 1. A communication device equipped with a detection circuit for detecting that a communication line has fallen to the ground due to a line failure, the communication device having a failure detection function, characterized in that the communication device is equipped with a notification means for notifying a detection result of the detection circuit.