JP7234822B2 - emergency call system - Google Patents

Description

TECHNICAL FIELD The present invention relates to an emergency call system for making an emergency call to an emergency call agency such as a police station, Japan Coast Guard, or fire station.

In an emergency call system that makes an emergency call to a special number (110, 118, 119), which is the telephone number of the emergency call reception system (hereinafter referred to as the command center) of the emergency call agency such as the police station, the Japan Coast Guard, and the fire department, traffic To make an emergency call by capturing a telephone line when an emergency call factor such as an accident or fire occurs.

For example, in the case of a fire reporting system, when a fire reporting button is pressed, the fire reporting device calls 119, which is the telephone number of the fire command center, and after the fire command center responds, a voice message is sent. to make an emergency call, and disconnect the telephone line after the emergency call. After that, the fire alarm system waits for a call back from the fire control center for a certain period of time. Then, after the end of the call, the telephone line is disconnected (Patent Document 1).

JP-A-2000-106606

As an emergency call system, a configuration having an emergency call device connected to a telephone line, and a dedicated telephone and a private branch exchange connected to a subsequent stage of the emergency call device can be considered.

In this emergency call system, if the telephone line is a line that has a PB dial-in service contract, the command desk disconnects the line while waiting for the reverse call (usually, the command desk does not disconnect the line. It is assumed that the side disconnects the line by mistake.) Therefore, when the line hold is released, the reverse signal will be an incoming call according to the PB dial-in procedure (hereinafter referred to as a PB dial-in incoming call). Become.

At this time, the emergency call device cannot distinguish between the gyakushin signal (IR signal) due to the PB dial-in incoming call and the normal gyakushin signal (IR signal), so the dedicated telephone rings. However, there is a problem that an extension designation signal (PB signal) is sent out from the telephone line, making it impossible to make a reverse call to the command desk.

This problem will be explained with reference to FIG. The emergency call device 100 dials (calls) a special number when a call cause occurs (step S401). That is, a special number selection signal is transmitted to the telephone network 5 . The telephone network 5 that has detected the call to the special number causes the command console 6 to receive the call (step S402). The command desk 6 transmits a response signal to the emergency call device 100 via the telephone network 5 (steps S403, S404). The emergency call device 100 sends the call message to the command console 6 via the telephone network 5 (step S405), and disconnects the line after sending (steps S406 and S407). The emergency call device 100 waits for a reverse message from the command desk 6 for a certain period of time after the line is disconnected.

The command console 6 sends a reverse message to the telephone network 5 (step S408), and the telephone network 5 transmits an IR signal due to the PB dial-in incoming call as an incoming call signal to the emergency call device 100 (step S409). The emergency call device 100 rings the telephone 2 (step S410). The telephone 2 is a dedicated telephone connected to the rear stage of the emergency call device 100 and used to communicate with the command console 6 . Although not shown, a private branch exchange is connected to the rear stage of the emergency call device 100. FIG.

When the telephone 2 responds (steps S411 and S412), an extension designation signal (1-4 digit PB signal) is transmitted from the telephone network 5 to the telephone 2 (step S413). In the PB dial-in incoming call, if the telephone 2 does not disconnect the line within 2 seconds after receiving all the digits of the extension designation signal, the line is disconnected from the telephone network 5 (steps S414, S415, S416). You will not be able to make reverse calls.

The present invention was made to solve such problems, and its object is to provide an emergency call device connected to a telephone line, and a dedicated telephone and a private branch exchange connected to the latter stage of the emergency call device. To enable a reverse signal call against a reverse signal due to a PB dial-in incoming call in an emergency call system.

The present invention provides an emergency call system having an emergency call device connected to a telephone line to which a PB dial-in service is subscribed, and a dedicated telephone and a private branch exchange connected to the post-stage of the emergency call device. IR signal detection means for detecting an IR signal while waiting for a reverse call from the platform, and holding means for holding a set value of response waiting time of the IR signal, wherein the IR signal detected by the IR signal detection means and the length of the response waiting time.

According to the present invention, in an emergency call system having an emergency call device connected to a telephone line, and a dedicated telephone and a private branch exchange connected to the post-stage of the emergency call device, in response to reverse calls due to PB dial-in incoming calls Reverse call is possible.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the emergency notification system which concerns on embodiment of this invention. 1 is a block diagram showing the configuration of an emergency call device according to an embodiment of the present invention; FIG. FIG. 10 is a diagram showing a processing sequence when the telephone line is a line to which the PB dial-in service is not subscribed; FIG. 10 is a diagram showing a first processing sequence when the telephone line is a line subscribed to the PB dial-in service; FIG. 10 is a diagram showing a second processing sequence when the telephone line is a line subscribed to the PB dial-in service; FIG. 10 is a diagram showing a third processing sequence when the telephone line is a line subscribed to the PB dial-in service; and FIG. 11 is a diagram showing an example of a processing sequence of a conventional emergency call system.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
[Emergency call system configuration]
FIG. 1 is a diagram showing the configuration of an emergency notification system according to an embodiment of the present invention.
are doing.

As shown in the figure, the emergency call system according to the embodiment of the present invention comprises an emergency call device 1 and a telephone 2 connected downstream. A private branch exchange 3 accommodating a plurality of extension telephones 4 is also connected to the rear stage of the emergency call device 1 . Also, the outside line side of the emergency call device 1 is connected to the telephone line of the telephone network 5 . The telephone 2 and private branch exchange 3 share a telephone line.

The telephone lines of the telephone network 5 are analog telephone lines or metal IP telephone lines. The command desk 6 is a reception system of the police station, the Japan Coast Guard, or the fire station, and the special numbers, which are the respective telephone numbers, are 110, 118, and 119.

The emergency call device 1 has a function of calling 110, 118, or 119 to make an emergency call. The telephone 2 is a dedicated telephone for communicating with the command console 6 . The extension telephone 4 is a telephone (including a facsimile device) that can be used while the emergency call device 1 is on standby.

[Configuration of emergency call device]
FIG. 2 is a block diagram showing the configuration of the emergency call device according to the embodiment of the invention.
As illustrated, the emergency notification device 1 according to the embodiment of the present invention includes a line control section 11, a notification management section 12, a voice control section 13, and a main control section 14 that controls these sections. A connection with the private branch exchange 3 is omitted because it is unnecessary for the following explanation.

The line control unit 11 is connected to the telephone line of the telephone network 5, and performs connection control with the telephone network 5, detection of various signals (IR signal, extension designation signal, busy tone, etc.), selection signal transmission, and the like. The report management unit 12 sorts the operations shown in Table 1, which will be described later, based on the setting of the emergency call device 1 (whether or not there is a PB dial-in service contract) and the duration of the reverse signal (IR signal). . The voice control unit 13 controls input/output of voice to/from the telephone 2 .

The main control unit 14 is composed of a computer processor, memory, etc., and controls the line control unit 11, the notification management unit 12, and the voice control unit 13 to perform various operations (FIGS. 3 to 6) to be described later. is executed by the emergency call device 1. In this memory, the presence or absence of the above-mentioned PB dial-in service contract, the voice data of the report message to be sent to the command desk 6, the setting information shown in Table 1, which will be described later, and the like are stored.

[Emergency call system operation]
Next, operation of the emergency notification system according to the embodiment of the present invention will be described. The emergency call device 1 of the emergency call system according to the embodiment of the present invention performs incoming call operations shown in Table 1 below according to the setting of whether or not there is a PB dial-in service contract.

In the PB dial-in incoming call, if no response is made to the IR signal from the telephone network within 6 seconds, which is the response waiting time of the telephone network, the IR signal is stopped (hereinafter referred to as no-response timeout). By performing operations based on the settings in this table, the emergency call device 1 can make reverse calls even if the telephone line is a line to which the PB dial-in service is subscribed. Here, α is a fixed or variable setting value, and is set within ±1 second, for example, considering the error of “6 seconds” in the response waiting time of the IR signal transmitted from the telephone network 5 . In addition, the "emergency call device settings (PB dial-in service contract: no/yes)" shown in this table indicates the telephone line to be connected to the emergency call device 1 when the emergency call device 1 is installed. It is set according to whether or not there is a contract for the PB dial-in service.

Hereinafter, description will be made in numerical order in the table.
<Processing sequence in case of setting without contract for PB dial-in service>
FIG. 3 is a diagram showing a processing sequence when the telephone line is a line to which the PB dial-in service is not subscribed.

When an emergency call factor occurs, the emergency call device 1 dials (calls) a special number (step S1). That is, a special number selection signal is transmitted to the telephone network 5 . The telephone network 5 that has detected the call to the special number calls the command console 6 (procedure S2). The command console 6 sends a response signal to the emergency call device 1 via the telephone network 5 (steps S3 and S4). The emergency notification device 1 transmits the notification message to the command console 6 via the telephone network 5 (step S5), and disconnects the line after transmission (steps S6 and S7). The emergency call device 1 waits for a reverse call from the command desk 6 for a certain period of time after the line is disconnected.

The command console 6 sends a reverse message to the telephone network 5 (step S8), and the telephone network 5 transmits an IR signal as an incoming call signal to the emergency call device 1 in a normal procedure (step S9). Since the incoming signal is an IR signal, the emergency call device 1 causes the telephone 2 to ring (step S10).

By off-hooking the telephone 2, a response signal is transmitted to the command console 6 via the emergency call device 1 and the telephone network 5 (steps S11, S12, S13), and a reverse call is made between the telephone 2 and the command console 6. (Step S14). After that, when the reverse message call ends, the line is disconnected from the telephone 2 (steps S15, S16, S17).

Here, steps S8 to S17 are the reverse message call operation. In this way, in the case of a telephone line for which the PB dial-in service contract has not been made, the telephone 2 can respond to the reverse message from the command desk 6 and make a call.

<Processing sequence in case of setting with contract for PB dial-in service>
Next, a processing sequence when there is a contract for PB dial-in service will be described. In the conventional emergency call system described with reference to FIG. 7, when the telephone line connected to the emergency call device is the line to which the PB dial-in service is subscribed, the reverse call cannot be made. On the other hand, in the emergency call system according to the embodiment of the present invention, by executing the processes shown in Nos. 2 to 4 in Table 1, the reverse message call is made possible. Hereinafter, the first to third processing sequences will be described in order.

<<First processing sequence in case of setting with PB dial-in service>>
FIG. 4 is a diagram showing the first processing sequence when the telephone line is a line subscribed to the PB dial-in service.

In this figure, steps S101 to S107 are the same as steps S1 to S7 in FIG. Next, the command console 6 sends a reverse message to the telephone network 5 (step S108), and the telephone network 5 transmits an IR signal as an incoming call signal to the emergency call device 1 (step S109). If the emergency call device 1 continues to detect the IR signal for longer than 6 seconds +α, it determines that the line is on hold (not PB dial incoming call) on the command console 6 side, and rings the telephone 2 (step S110). Steps S111 to S117, which are subsequent steps, are the same as steps S11 to S17 in FIG. Here, steps S108 to S117 are reverse communication operations. In this sequence, the telephone 2 of the emergency call device 1 automatically responds to the IR signal.

<<Second processing sequence in case of setting with contract for PB dial-in service>>
FIG. 5 is a diagram showing the second processing sequence when the telephone line is a line subscribed to the PB dial-in service.

In this figure, steps S201 to S207 are the same as steps S1 to S7 in FIG. Next, the command desk 6 sends a reverse message to the telephone network 5 (step S208), and the telephone network 5 transmits an IR signal as an incoming call signal to the emergency call device 1 (step S209).

Since the emergency call device 1 detects the stop of the IR signal at 6 seconds +α (step S210), it judges that it is a no-response timeout for the reverse call due to the PB dial-in incoming call, and operates the PB dial-in incoming call for the next incoming call. I do. More specifically, the fact that the IR signal stopped at 6 seconds + α means that the IR signal stopped as a result of the emergency call device 1 not responding to the reverse message due to the PB dial-in incoming call after the line hold was released. Then, based on the judgment, the next incoming call (reverse message) from the command table 6 is dealt with.

That is, when the command desk 6 makes a reverse call (step S211) and an IR signal is sent as an incoming call signal from the telephone network 5 by PB dial-in incoming call (step S212), in order to avoid the PB dial-in incoming call, an emergency The reporting device 1 automatically responds (step S213). After receiving all digits of the extension designation signal (PB signal of 1 to 4 digits), the line is disconnected (steps S214 and S215), and then the telephone 2 is caused to ring (step S216). Steps S217 to S223, which are subsequent steps, are the same as steps S11 to S17 in FIG. Here, steps S211 to S223 are reverse communication operations.

<<Third processing sequence when there is a PB dial-in service contract>>
FIG. 6 is a diagram showing the third processing sequence when the telephone line is a line subscribed to the PB dial-in service.

In this figure, steps S301 to S307 are the same as steps S1 to S7 in FIG. Next, the command console 6 sends a reverse message to the telephone network 5 (step S308), and the telephone network 5 transmits an IR signal as an incoming call signal to the emergency call device 1 (step S309).

Since the emergency call device 1 detects the stop of the IR signal in less than 6 seconds +α (step S310), it determines that the reverse call is canceled after the line hold is released. More specifically, the fact that the IR signal stopped in less than 6 seconds + α means that the gyakushin was started after the line hold was released, but the line was disconnected in the middle (less than 6 seconds + α from the start) and the gyakushin was stopped. judge there is.

In this case, since the next gyakushin is expected, the emergency call device 1 waits for the next gyakushin. The operation at the time of the next gyakushin becomes the second processing sequence.

As described above, in the first to third processing sequences, the emergency call device 1 determines the length of the duration of the IR signal detected while waiting for the reverse call, and the response of the preset and held IR signal. The incoming call operations (1) to (3) below are performed according to the relationship with the length of the waiting time (6 seconds+α).
(1) If the duration of the IR signal is longer than the response waiting time of the IR signal, the command desk 6 determines that the line is on hold (not a PB dial-in incoming call) and causes the telephone 2 to ring.
(2) When the duration of the IR signal is equal to the response waiting time of the IR signal, the IR signal was stopped as a result of the emergency call device 1 not responding to the reverse message due to the PB dial-in incoming call after the line hold was released. Then, the emergency call device automatically responds to the reverse call by the next PB dial-in incoming call from the command desk 6, receives the extension designation signal, disconnects the line, and makes the telephone 2 ring. .
(3) If the duration of the IR signal is shorter than the response waiting time of the IR signal, the command desk 6 side started the reverse call after the line hold was released, but the line is cut off in the middle (less than the response waiting time from the start), and the reverse call is made. , and waits for the next gyakushin.

DESCRIPTION OF SYMBOLS 1...Emergency call device 2...Telephone 3...Private branch exchange 4...Extension telephone 5...Telephone network 6...Command desk 11...Line control part 12...Report management part 13...Voice control part 14... Main control unit.

Claims (5)

An emergency call system having an emergency call device connected to a telephone line to which a PB dial-in service is subscribed, and a dedicated telephone and a private branch exchange connected to the rear stage of the emergency call device,
IR signal detection means for detecting an IR signal while waiting for a call back from the command desk;
holding means for holding the set value of the response waiting time of the IR signal;
An emergency call system that performs an incoming call operation according to the relationship between the duration of the IR signal detected by the IR signal detection means and the length of the response waiting time. In the emergency call system according to claim 1,
An emergency call system that automatically responds to an IR signal by ringing a dedicated telephone when the duration is longer than the response waiting time. In the emergency call system according to claim 1 or 2,
An emergency notification system for performing a PB dial-in incoming call operation for the next incoming call when the duration time is the same as the response waiting time. In the emergency call system according to any one of claims 1 to 3,
An emergency notification system that waits for the next gyakushin when the duration is shorter than the response waiting time. In the emergency call system according to any one of claims 1 to 4,
An emergency call system having means for holding setting information on whether or not a contract for a PB dial-in service exists.

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