JP3001380B2 - Dial pulse receiver diagnostic method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for diagnosing a dial pulse receiver of a subscriber signal processing system.

[0002]

2. Description of the Related Art A conventional dial pulse receiver is diagnosed by preparing a trunk for transmitting numbers as shown in Japanese Patent Application Laid-Open No. Hei 3-217194, and returning a dial pulse by means of a loopback means. Equivalent)
And confirmed the normality of the trunk for receiving numbers.

[0003]

In the conventional system described above, dial pulse transmitting means is required for diagnosing the dial pulse receiver. Therefore, in the method of the present invention, only the return insertion means is added for diagnosis,
It is an object of the present invention to provide a dial pulse receiver diagnosis method which can confirm the normality of a dial pulse receiver under the control of a control unit.

[0004]

According to the dial pulse receiver diagnostic system of the present invention, a control signal of a subscriber circuit is provided by a bit map allocated to a signal on a subscriber control highway, and the state of the subscriber circuit is monitored. In the subscriber signal processing system provided to the dial pulse receiver via the status monitoring highway, any dial on the subscriber status monitoring highway to the dial pulse receiver can be set to any subscriber bit on the subscriber control highway. An insertion circuit adapted to be inserted into bits of a pulse receiver channel, the control unit of the subscriber signal processing system being capable of controlling bits of a subscriber control highway, The reception result can be detected.

It is preferable that the state monitoring highway is directly connected to the dial pulse receiver or is connected to the dial pulse receiver via a switch circuit.

[0006]

The control unit of the subscriber signal processing system controls the insertion circuit to provide a signal for diagnosis to the dial pulse receiver, and checks the reception result to perform diagnosis.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a dial pulse receiver diagnostic system of the present invention, FIG. 2 is a flowchart for explaining the operation of the embodiment of FIG. 1, and FIG.
It is a waveform diagram which shows the control pattern of the bit returned to a dial pulse receiver.

1 is a dial pulse receiver (hereinafter abbreviated as DPR) to be diagnosed, and 2 is a subscriber control highway (hereinafter S)
D / HW (abbreviated as SD)
3 is an insertion circuit, 4 is a switch circuit, and 5 is a control unit. The control unit 5 controls the SD circuit 2 and
Any bit of any subscriber on the HW can be controlled.

The switch circuit 4 normally operates in the SCN / HW mode.
Of the above status monitoring bits of the subscriber receiving the dial,
The loop status bit that causes the dial pulse
Input to l. On the highway between the switch circuit 4 and DPR1, bits corresponding to each channel of DPR1 are multiplexed. The insertion circuit 3 is controlled by the control unit 5 at the time of diagnosis.
Is configured so that a specific bit of an arbitrary subscriber on the SD / HW can be inserted into a bit corresponding to an arbitrary DPR channel on a highway between the switch circuit 4 and the DPR1.

Next, the operation of the dial pulse receiver diagnostic system of the embodiment shown in FIG. 1 will be described with reference to FIGS. The control unit 5 determines a particular subscriber, and sets the S
The insertion circuit 3 is controlled so that the specific bit on the D · HW is inserted into the bit corresponding to the channel under test of the DPR1 on the highway between the switch circuit 4 and the DPR1 (step S).
1). The control unit 5 controls the SD circuit 2 to control the above-mentioned folded bit like a dial pulse as shown in FIG. 3 (a) (step S2). Information ("3" in the example shown)
Is checked (step S3). Also, as shown in FIG. 3 (b), the return bit is changed like a halfway flight (step S4), and after the disconnection timing, the reception result of DPRl is read and it is checked whether it is abandoned halfway (step S5). Next, it is determined whether or not the diagnosis has been performed for all the channels of DPR1 (step S6). If the diagnosis has not been performed for all the channels, the process returns to step S1 to proceed to the diagnosis for the next channel. If the diagnosis has been made, the diagnosis is terminated. Also, if the subscriber on the SD circuit side transmitting the test bit is also changed and the judgment is made based on the combination of the reception results, a more accurate diagnosis can be made, and at the same time, the normality on the SD circuit side can be confirmed.

[0011]

As described above, according to the present invention, a bit for any subscriber on the subscriber control highway is converted to a bit for any dial pulse receiver channel on the subscriber status monitoring highway to the dial pulse receiver. A means for inserting a bit into the dial pulse receiver, and changing the bit like a dial pulse or abandoning it in the middle and comparing it with the reception result of the dial pulse receiver, without a dial pulse sending circuit for diagnosis There is an effect that the normality of the dial pulse receiver can be confirmed and an economical dial pulse receiver diagnosis method can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a dial pulse receiver diagnostic system according to the present invention.

FIG. 2 is a flowchart illustrating the operation of the embodiment of FIG.

FIG. 3 is a waveform diagram showing a control pattern of a bit turned back to a dial pulse receiver in the embodiment of FIG.

[Explanation of symbols]

Reference Signs List 1 dial pulse receiver (DPR) 2 subscriber control bit pattern control circuit (SD circuit) 3 insertion circuit 4 switch circuit 5 control unit S1 to S6 step

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-217194 (JP, A) JP-A-60-172899 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04Q 3/42-3/42 107 H04Q 1/30-1/50

Claims (3)

(57) [Claims] 1. A subscriber circuit control signal is provided in a bit map allocated to a signal on a subscriber control highway, and the status monitoring of the subscriber circuit is provided to a dial pulse receiver via the status monitoring highway. In a subscriber signal processing system, an insertion circuit which is capable of inserting an arbitrary subscriber bit on a subscriber control highway into an arbitrary dial pulse receiver channel bit on a subscriber status monitoring highway to a dial pulse receiver. Wherein the control section of the subscriber signal processing system is capable of controlling a bit of a subscriber control highway and capable of detecting a reception result of a dial pulse receiver. Pulse receiver diagnostic method. 2. The dial pulse receiver diagnostic system according to claim 1, wherein said status monitoring highway is directly connected to said dial pulse receiver. 3. The dial pulse receiver diagnostic system according to claim 1, wherein the state monitoring highway is connected to the dial pulse receiver via a switch circuit.