JPS6190556A - Automatic informing device - Google Patents

Abstract

PURPOSE:To obtain an automatic informing device possible for automatic proper dialing by using the result of detection of a signal detection means depending on the presence of signal transmission from an exchange during a pause period during the operation of a dialing means to start other dialing means. CONSTITUTION:An emergency push-button detecting circuit 1 receiving a start signal from an emergency push-button starts a main control circuit 2. When a subscriber's telephone set is busy in this case, a busy state detection circuit 3 detects it, its detected output is given to the main control circuit 2 to intermit momentarily the progress of operation of the main control circuit 2. When the busy state is finished, since the said detection output goes to logical 0, the main control circuit 2 changes over a contact cml of a relay CML to connect the automatic informing device to a telephone line. Then a loop is constituted of a choke 8 to acquire the line. The main control circuit 2 identifies the said signal tone (400Hz) by the operation processing of a microcomputer an when a dial tone (DT) of the exchange is detected, a dialing circuit 5 is controlled to send a dial tone.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic notification device that can determine the state of a connected telephone line and automatically perform an appropriate dialing operation.

"Prior Art" Conventional automatic reporting devices have the following drawbacks because they use the connected telephone line with the state set in advance.

■If you connect an automatic notification device to the PBX extension, for example,
At night, etc., it is normal to switch the extension line of the PBX to a direct line to the central office line, but after switching, the special number for calling the central office line (°0" dialing) is no longer required, so the automatic reporting system should also be compatible with this. The function must be switched each time.If this is forgotten, it becomes impossible to report and the system becomes extremely unreliable.

■When connecting to the extension of a business group telephone (Centrex), you must remember to make a °0° call before sending the dialed number of the report destination. However, it will not be possible to report. In the past, there were many cases in which people forgot their memory of this 0 transmission.

■When carrying out Kirihoko work on the DP-PB line, there will be no problem if the communication about the construction is accurate and the automatic notification device side is quickly switched, but if there is a delay or forgetting to communicate, the automatic notification device side will need to be switched. If this is not done, it will also not be possible to report.

"Problems to be Solved by the Invention" The fact that notification may become impossible due to switching failure in the cases of (1), (2), and (3) above is a serious problem that leads to a fatal flaw in the mission of automatic reporting devices. It is. Therefore, the above
It is an object of the present invention to obtain an automatic notification device that does not require switching between (1) and (2).

"Means for Solving the Problems" In order to compensate for the drawbacks described above, the present invention detects DT (dial tone) from a telephone line and transmits DT (dial tone) from a central office exchange.
Or PBX DT or Centrex D 71”
In addition, during the Quisel operation, the signal sound is detected during the pause period during which the Atayal number is being sent, and the telephone line standard is determined. This is intended to enable signal dialing operations that conform to the rules.

``Example'' Figure 1 is a block diagram of an automatic notification device according to the present invention, Figure 2 is a block diagram of an automatic notification device according to the present invention.
The figure is a flowchart showing the flow of operations from when the automatic notification device starts dialing after acquiring the line, and FIG. 6 is a flowchart of the operation of switching the Atial type (PB double signal to DP double signal).

In FIG. 1, 1 is an emergency push button detection circuit that detects an activation signal, 2 is a main control circuit including a microcomputer, 6 is a busy detection and response detection circuit, and 4 is a 400H
DT and BT detection circuit consisting of a Z band pass filter,
5 is a dial sending circuit, 6 is a tape deck or voice synthesis circuit for storing report contents, and 7 is an amplifier circuit.

Next, the operation will be described. In response to the activation signal from the emergency push button, the emergency push gauge 1 detection circuit 1 activates the main control circuit 2.

At this time, if the telephone is busy, the busy production circuit 3 detects this and gives its detection output to the main section 1@circuit 2, thereby temporarily interrupting the operation progress of the main control circuit 2. When the busy state ends, the detection output becomes "0", so the main control circuit 2 switches the contacts cml-r and y of the relay CML to connect the automatic reporting device to the telephone line. This will cause choke 8
A loop is formed and the line is captured.

Next, referring to FIG. 2, the operation after line acquisition until dialing operation begins will be explained.

DT and BT from the telephone line are detected by a DT, BT' detection circuit 4. That is, when the telephone line is captured, a DT is sent from the exchange, but if the telephone line is an extension of private branch exchange 1, the DT is a normal tone, unlike the continuous tone (400H2) of the central office exchange. is Q
, intermittent sound with periods of 5 seconds and 0.2 seconds (4
In the case of Centrex, it is an intermittent sound (400Hz) with an even shorter period (0.05sec and Q, i 5 SeC or 0.255ec),
These are detected by the DT and BT detection circuits,
The detection output is applied to the main control circuit 2, so the main control circuit 2 identifies the above signal sound (400Hz) through arithmetic processing by a microcomputer, and transmits the DT of the TA1 exchange.
If detected, the dial sending circuit 5 is immediately controlled and the dialing operation is started.

(If the DT of BL P B
If detected, the dialing operation begins. If the central office switch DT
If this is not done, the dial operation will proceed after T time has elapsed.

(C) When the Centrex DT is detected, the dial sending circuit 5 is controlled to send "0" and then the dialing operation is started.

Next, when there is construction work to switch the line from DP to PB, and the line selection on the automatic notification device side has not been switched from DP to PB, the operation of automatically switching will be explained with reference to FIG.

The main control circuit 2 uses the dial sending circuit 5 by the above-described operation.
During the pause period of dialing, a signal (400H) sent from the central office exchange is activated.
z) is detected by the DT and BT detection circuit 4, the detection output is identified by the main control circuit 2, and if BT or DT is identified as a result, the dial signal is switched from DP to PB and restarted. In other words, if a DT or BT is sent from the central office = Sa even if a dialing signal is sent from the side digit, it is determined that the dialing signal suitable for the line is not being sent, and the DP/PB. The dial signal is configured to be switched and retransmitted. If DT or BT is not detected during the pause period, the dialing operation continues, and if DT or BT is not detected even after dialing is completed, the reporting operation is started after waiting for response detection by the response detection circuit 3. do. If DT or BT is detected at this stage, the dial signal DP/PB is switched and restarted. This is an intermittent tone (signal) sent from the central office exchange.
Since it may be difficult to detect the BT during the pause period, an opportunity to switch the dial signal is provided based on the same idea as described above even after the dial operation is completed.

"Effects of the Invention" As explained above, according to the present invention, whether the automatic notification device is connected directly to the central office line, whether it is connected to the extension line of PB or X, or to the extension line of Centrex, However, at the discretion of this automatic reporting device,
``Insert or remove a call.

In addition, even if there is D P/P B switching work, this automatic notification device will detect this and activate the automatic notification device.
), the automatic notification device is not required to switch between DP/PB dial signals. Therefore, there is no room for human error such as forgetting or delaying the switching operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the present invention, FIG. 2 is a flowchart of operations from line acquisition to dialing, and FIG. 3 is a flowchart of switching dial signal formats. 1...Emergency push button detection circuit, 2...Main control circuit, 3.
. . . Busy detection, response detection circuit, 4 . . DT, BT detection circuit, 5 . . . Dial sending circuit, 6 . . . Tape deck or voice synthesis circuit, 7 . . . Amplifier circuit.

Claims (1)

[Claims] (1) In an automatic notification device that receives an activation signal from an emergency push button, etc., dials the telephone number of the destination via a telephone line, and when the destination responds, sends out pre-recorded report contents. Activation of any one of the signal dial sending means, the PB signal dial sending means, the central office line originating special number sending means, the detection and identification means for detecting and identifying the signal tone obtained from the exchange by seizing the line, and the above-mentioned dial sending means. a special number control means for controlling the above-mentioned central office line origination special number sending means prior to the operation, and a signal detection means for detecting the presence or absence of a signal (DT or BT) being sent from the exchange during a pause period during the operation of one of the dial sending means. Depending on the detection results,
An automatic notification device characterized in that the other dial sending means is activated.