JPH0761103B2 - Telephone device failure diagnosis method and failure diagnosis device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a failure diagnosing method and a failure diagnosing apparatus for a telephone device, and more particularly to a failure diagnosing method and a failure diagnosing apparatus for an interface circuit for a button telephone or a private branch exchange (PBX).

[0002]

2. Description of the Related Art Conventionally, a failure diagnosis of an interface circuit for a key telephone device or a private branch exchange (PBX) has been performed.
There is a system in which a failure diagnosis such as a communication path and a dial function can be performed by transmitting and receiving a signal through a public line.

In the failure diagnosis of the interface circuit in the single telephone, there is one in which the failure diagnosis can be performed by operating the push button of the single telephone.

[0004]

However, in the failure diagnosis of the interface circuit for the key telephone unit or the private branch exchange (PBX), since it is necessary to send and receive a signal through the public line, the failure of the public line is always detected. There was a problem that calling charges were required.

Further, in the failure diagnosis of the interface circuit in the single telephone, there is a problem that the failure diagnosis must be performed manually, and the manual operation is troublesome.

Therefore, an object of the present invention is to provide a failure diagnosis method and a failure diagnosis apparatus for a telephone device which can automatically perform failure diagnosis without using a public line.

[0007]

As a means for solving the above problems, the present invention detects a signal transmitted from a central line interface circuit in a single telephone interface circuit, and based on the detected signal, each interface is detected. It is used for circuit failure diagnosis.

Also, an interface circuit for the office line,
An interface circuit for a single telephone that includes a detection circuit that detects a signal transmitted from the station line interface circuit, and a control circuit that outputs a failure diagnosis signal of each interface circuit based on a detection signal of the detection circuit It is a thing.

[0009]

The signal transmitted from the station line interface circuit is detected in the single telephone interface circuit, and the failure of each interface circuit is diagnosed based on the detected signal.

[0010]

Embodiments of the present invention will now be described with reference to the accompanying drawings. FIG. 1 is a circuit configuration diagram showing an input / output unit of a key telephone main unit according to an embodiment of the present invention. In this figure,
Reference numeral 1 denotes a key telephone main unit. An input / output unit of the key telephone main unit 1 has a station line interface circuit 2 for connecting an internal communication path 100 and a central line 200, an internal communication path 101, and a single telephone 3. And a main controller unit 5 for controlling the station line interface circuit 2 based on the output signal from the single telephone interface circuit 4, and the main telephone unit 5 connects between the respective interface circuits 2 and 4. Faults can be diagnosed by exchanging signals.

The station line interface circuit 2 includes a coil 6a connected in series with the internal communication path 100 and a station line 20.
Coil part 6 consisting of coil 6b connected in series with 0
And the internal communication path 1 to the coil 6a of the coil unit 6
DTMF dial sending unit 7 connected in parallel with 00,
The coil 6 is mainly composed of a DC loop circuit 8 and a dial pulse sending circuit 9 which are connected to the coil 6b of the coil unit 6 in parallel with the station line 200. Office line interface circuit 2
The relay circuit 10 formed by switches 10a and 10b connected in series with the coil 6b is located at the right side of
Is provided and is adapted to interlock with the relay circuit 15 of the single telephone interface circuit 4. In addition, station line 2
00 is connected to an exchange (not shown).

The above-mentioned single telephone interface circuit 4
Is a coil 12a connected in series with the internal communication path 101.
And a DTMF dial detecting section 11 connected in parallel to the internal communication path 101 with respect to the coil 12a.
The signals from the DC current supply circuit 13 connected to the coil 12b in parallel with the single telephone 3 and the DC loop circuit 8 and dial pulse transmission circuit 9 of the station line interface circuit 2 can be detected. It is mainly composed of a DC loop detection and dial pulse detection circuit 14 which is present. A relay circuit 15 including switches 15a and 15b connected in series with the coil 12b is provided at a position on the right side of the single telephone interface circuit 4 so as to interlock with the relay circuit 10 of the office line interface circuit 2. It has become. Relay circuit 10
The relay circuit 15 is connected to the main controller during the failure diagnosis operation.
It is energized in an interlocked manner by the controller section 5, and the station line interface
The base circuit 2 and the single telephone interface circuit 4
To connect. Also, during normal operation, the relay circuit 10
Line interface circuit 2, office line 200, relay circuit 1
5 is a single telephone interface circuit 4 and a single telephone 3
Connect each.

When the main controller section 5 has a detection output of the DC loop detection and dial pulse detection circuit 14 or a detection output of the DTMF dial detection section 11, that is, the DC loop circuit 8, the dial pulse transmission circuit 9 and the DTMF dial. When there is a failure in any of the sending units 7 , DC loop detection and dial pulse detection
A failure detection signal is input from the circuit 14 or the DTMF dial detection section 11, and a failure confirmation signal based on the failure detection signal is sent to the storage section 16. Real
In the embodiment, when the DC loop circuit 8 has a failure,
Normal DC loop is not formed. Therefore,
In the loop detection and dial pulse detection circuit 14.
Detects that a normal DC loop is not formed, and
Is input to the main controller unit 5. Similarly,
When there is a failure in the dial pulse sending circuit 9, dial
No pulse is generated, DC loop detection and dial pulse
The status detection circuit 14 detects that state and sends a signal to that effect.
No. is input to the main controller unit 5. Also, DTM
If there is a malfunction in the F dial sending section 7, dial tone
No signal is sent and this state is indicated by the DTMF dial detector.
11 and the signal to that effect is detected by the main controller.
To the la section 5.

In this storage unit 16, each failure location in the storage unit 16 is regularly (for example, at midnight every day), for example, DTMF.
Addressing corresponding to the dial sending unit 7 is performed and temporarily stored, and by recalling the addressed memory every fixed period (fixed time), a failure of the DTMF dial sending unit 7, for example, can be detected over time. You can check. Further, the display / alarm unit 17 can display a display or sound an alarm in order to identify and clearly indicate a failure location based on the output of the storage unit 16. Therefore, since the failure location can be specifically specified, it becomes possible to easily perform the failure repair on the spot.

Next, the operation of this embodiment will be described with reference to FIG. 1 and the flow charts of FIGS.
The flow chart of FIG. 2 shows the office line interface circuit 2
The process for operating the storage unit 16 and the display alarm unit 17 when there is a failure in the DC loop circuit 8 or the dial pulse transmission circuit 9 is shown.

[0016] destination not a failure diagnosis mode signal (DIAG) is
When applied, the main controller section 5 will cause the relay circuit 1 to
0 switches 10a, 10b and relay circuit 15 switches
Switch 15a, 15b to activate the local line interface
Connect the circuit 2 and the single telephone interface circuit 4
It Next, turn on the dc current supply circuit 13 (step, .ST1 abbreviated as follows ST). Then, both interface circuits 2 and 4 are made operable (ST
2). Then, it judged whether there is <br/> failure as described above, for example, in a DC loop circuit 8. That is, the fault there Ru if the dc loop circuit 8, switching circuit 10, signal flows that indicates that there is a fault in the switch circuit 15 of the single line telephone interface circuit 4 (ST3 and ST4). When the signal is input to the DC loop detection / dial pulse detection circuit 14, the main controller section 5 can detect that the DC loop circuit 8 has a failure (ST5).

Next, a signal indicating that the DC loop circuit 8 has a failure is input to the main controller section 5 (ST6). And the main controller unit 5
Is stored in the storage unit 16 (ST7) from the display alarm unit 17
By specifying by the display or sounding an alarm that there is a failure in the DC loop circuit 8,
This process ends. When it is determined in ST3 that the DC loop circuit 8 has no failure, this process ends.

[0018] In the above ST2, there is a fault in the dial pulse transmitting circuit 9, when it detects a dial pulse fails in dc loop detection and dial pulse detection circuit 14 (ST9) running above ST4~ST8 ,
It displayed on the display alarm unit 17 that there is a malfunction in the dial pulse transmitting circuit 9, thereby sounding an alarm. Therefore, since the failure of the dial pulse sending circuit 9 can be easily recognized, the failure can be quickly repaired.

The flowchart of FIG. 3 shows the steps for operating the storage unit 16 and the display alarm unit 17 when the DTMF dial sending unit 7 has a failure.

The destination not a similarly fault diagnosis to the step shown in FIG. 2
When the mode signal (DIAG) is applied, the main controller
The roller unit 5 includes switches 10a and 10b of the relay circuit 10.
And energizing the switches 15a and 15b of the relay circuit 15
However, the station line interface circuit 2 and the independent telephone interface
The face circuits 4 are connected. Next, turn on the dc current supply circuit 13 (step, .ST10 abbreviated as follows ST). Then, both interface circuits 2 and 4 are made operable (ST11). Next, DTMF
Whether there is failure dial delivery unit 7 for judgment. sand
KazuSatoshi, the fault there Ru if the D TMF dial transmitting section 7 passes a signal indicating that there is a fault in the coil unit 6, the switch circuit 10, the switch circuit 15 of the single line telephone interface circuit 4 (ST12,13 ). Then, the DTMF dial detection unit 11 passes through the coil unit 12 and the DTMF
It is detected that the dial sending unit 7 has a failure (ST1
4). Therefore, since it is possible to easily recognize that the DTMF dial sending unit 7 has a failure, it is possible to quickly repair the failure.

Next, a signal indicating that the DTMF dial sending unit 7 has a failure is input to the main controller unit 5 (ST15). Then, the main controller unit 5 stores in the storage unit 16 (ST16), and the display / alarm unit 17 specifies and clearly indicates that the DTMF dial sending unit 7 has a failure by displaying a display or sounding an alarm (ST17). This process ends. In ST12, the DTMF dial sending unit 7
If it is determined that there is no failure in the above, this process is immediately terminated.

In the above embodiment, when any one of the DTMF dial sending section 7, the DC loop circuit 8 and the dial sending circuit 9 of the office line interface circuit 2 has a failure, the signals sent from these circuits or the like are used as a single telephone. Each of the detection circuits 11 and 14 in the interface circuit 4 performs detection, and based on the detection signal, the failure diagnosis of the interface circuits 2 and 4 can be performed by the storage unit 16 or the display alarm unit 17 via the main controller unit 5. it can.

Therefore, in the present embodiment, it is not necessary to send and receive signals through the public line, and not only the call charge for the public line is not required each time a fault diagnosis is made, but also the trouble diagnosis is performed manually. You will be able to eliminate it.

[0024]

As described above, according to the present invention, the failure diagnosis between the interface circuits not only eliminates the need to send and receive signals through the public line, but also allows the failure diagnosis to be performed manually. It is possible to obtain excellent operational effects such as eliminating the annoyance.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram showing an input / output unit of a key telephone main unit according to an embodiment of the present invention.

FIG. 2 is a diagram showing a flowchart of the operation of one embodiment of the present invention.

FIG. 3 is a diagram showing a flowchart of the operation of the embodiment of the present invention.

[Simple explanation of symbols]

 1 button telephone main device 2 office line interface circuit 3 single telephone 4 independent telephone interface circuit 5 main controller section 7 DTMF dial sending section 8 DC loop circuit 9 dial sending circuit 11 DTMF dial detecting section 14 DC loop detecting and dial pulse detecting circuit 16 Storage unit 17 Display alarm unit

Claims (2)

[Claims] 1. A system provided between a station line and a first internal communication path.
DC loop circuit, dial pulse transmission circuit, diamond
Station line interface including failure detection target circuits such as
In the fault diagnosis device of the telephone device that performs the fault diagnosis of the base circuit
There is a power supply provided between the single telephone and the second internal communication path.
Circuit and a failure detection circuit that detects a failure in the failure detection target circuit.
Output circuit and the single telephone or the local line interface
Source circuit and a first switch circuit selectively connected
An independent telephone interface circuit having the above is provided, and the office line interface circuit is provided with the office line or the
First switch in single telephone interface circuit
A second switch circuit selectively connected to the path, and in the failure diagnosis mode, the first switch and the first switch circuit are connected .
2 switch to activate the station line interface
The operation of the failure detection target circuit in the road is
Input to the failure detection circuit in the interface circuit
Connect the power supply of the single telephone interface circuit
The failure detection circuit detects a failure signal by energizing the path.
Of a telephone device having a control means for outputting it when
Fault diagnosis device. 2. A line provided between the office line and the first internal communication path.
Local line interface circuit having failure detection target circuit
And a failure is provided between the single telephone and the second internal communication path.
A single telephone interface circuit having a detection circuit and
The failure in the failure detection circuit without passing through the local line.
Connect the circuit to detect the failure of the detection target circuit, and connect the failure detection target circuit in the station line interface circuit.
Of the failure detection target circuit in the station line interface circuit
The operation is performed by detecting the failure in the single telephone interface circuit.
A telephone device that detects in the outgoing circuit and diagnoses the failure of the office line interface circuit.
Failure diagnosis method.