JP2018050170A - Emergency call system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emergency call system capable of reliably receiving a return call from firefighting agencies even when using IP lines.SOLUTION: An emergency call system 1 includes: an optical gateway device 10 connected to an IP line NW; an emergency call device 20 connected to the optical gateway device 10; and a reception-only telephone 30 connected to the emergency call device 20. When the emergency call device 20 detects a CAR signal, it is determined that a return call has been detected, the reception-only telephone 30 is not rung for a certain period of time after that, and when an IR signal is detected, the receive-only telephone 30 is rung.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an emergency call system.

  Conventionally, an emergency call device used in an emergency such as a fire is known. In the emergency call device, when the caller presses the fire call button, the fire department is notified by automatic voice, and then the fire department sends a call back to the “calling telephone (hereinafter referred to as fire telephone)”. A telephone for fire is taken up and a voice call can be made with the fire engine.

  Here, when the fire dedicated telephone is connected to the PSTN line, a call signal (IR signal) is sent as a call back signal (hereinafter referred to as reverse signal), whereas it is connected to the IP line. In this case, a number display incoming signal (CAR signal) is sent out depending on the setting by the gateway device to be used. A technique in the case of an IP line is disclosed in Patent Document 1, for example.

  However, in the case of the fire dedicated telephone connected to the IP line, if a 16 Hz signal is detected in the state of waiting for the reverse communication after the notification, the reverse communication is performed regardless of the “IR signal / CAR signal”. Judgment is received and the dedicated fire phone is ringed. Then, even if the reverse signal is a CAR signal, the fire dedicated telephone rings, so even if the ringing is not a reverse signal, the caller responds, and the IR signal cannot be ringed thereafter, resulting in a result. As a result, the problem of not being able to receive a rebuttal from the fire department occurs.

JP 2000-138752 A

  The present invention has been made to solve the above-described problems, and provides an emergency call system that can reliably receive a reverse message from a fire engine even when an IP line is used. With the goal.

  In order to solve the above problems, the present invention is grasped by the following aspects. An aspect according to the present invention is an emergency call system, an optical gateway device connected to an IP line, an emergency call device connected to the optical gateway device, and a reception-only telephone connected to the emergency call device When the emergency call device detects a CAR signal, the emergency call device determines that a reverse message has been detected. After that, when the IR signal is detected without ringing the reception dedicated phone for a certain period of time, the reception dedicated phone It is characterized by ringing.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where an IP line is utilized, the emergency call system which can receive the reverse communication from a fire engine reliably can be provided.

It is a block diagram which shows the structure of the emergency call system which concerns on embodiment of this invention. It is a sequence diagram in the case of responding to a primary call with respect to reverse communication. It is a sequence diagram in the case of responding to a secondary call with respect to reverse communication. It is a flowchart which shows the processing flow at the time of reverse communication.

(Configuration of the embodiment)
Hereinafter, an emergency call system 1 according to an embodiment of the present invention (hereinafter simply referred to as an embodiment) will be described in detail with reference to the drawings. In addition, the same number or code | symbol is attached | subjected to the same element through the whole description of embodiment.

  As shown in FIG. 1, the emergency notification system 1 according to the present embodiment includes an optical gateway device 10 connected to the IP line NW, an emergency notification device 20 connected to the optical gateway device 10, and an emergency notification device 20. A fire dedicated telephone 30 (receive dedicated telephone) is provided. The emergency notification device 20 is provided with a fire notification button 21, and when the fire notification button 21 is pressed, between the fire engine FS (command stand) connected to the IP line NW and the emergency notification device 20. Communication is made in case of emergency such as a fire. On the secondary side of the emergency call device 20, the telephone 40 or FAX is connected as an analog connection as an ordinary communication terminal, in addition to the fire dedicated telephone 30.

  As will be described later in detail, when the fire notification button 21 is pressed, the emergency call system 1 is notified of a special number (119) to the fire fighting organization FS, and an automatic voice “fire is fire.” And phone numbers are reported. Then, reverse communication (call back) is performed from the fire engine FS, and the reporter picks up the fire telephone 30 and makes a voice call with the fire engine FS.

  The optical gateway device 10 and the emergency call device 20, and the emergency call device 20 and the telephone 40 or FAX are connected to analog ports, respectively.

  The configuration and function of the emergency call system 1 will be further described using the sequences shown in FIGS.

  FIG. 2 shows a case where a problem occurs when a reverse call (call back) is received from the fire engine FS in response to a fire report from the caller. In the case of FIG. 2, when a reverse communication is received from the fire fighting organization FS via the IP line NW, the optical gateway device 10 sends a primary incoming number display incoming signal (CAR signal) to the emergency call device 20. Send it out. The emergency call device 20 determines that the received signal is a reverse detection and causes the fire dedicated telephone 30 to ring. That is, the fire telephone 30 responds to this primary incoming call.

  Thereafter, the optical gateway device 10 sends the number display data to the fire dedicated telephone 30. Thereafter, when the line is not disconnected from the fire dedicated telephone 30, the optical gateway device 10 disconnects the line after a predetermined time (about 2 seconds), and then the fire dedicated telephone 30 is busy (busy). Further, if the line is not disconnected, the reverse message from the fire engine FS cannot be received. As a result, the fire dedicated telephone 30 cannot respond to the reverse message, and the caller and the fire engine FS cannot make a call.

  On the other hand, the emergency call system 1 according to the present embodiment functions as shown in FIG. In the case of FIG. 3, when a reverse communication is received from the fire fighting organization FS via the IP line NW and arrives at the optical gateway device 10, the optical gateway device 10 sends a primary incoming number display incoming signal (CAR signal) to the emergency call device 20. Send it out. The process up to this point is the same as in the case of FIG.

  However, after that, the emergency call device 20 determines that the incoming signal is a reverse detection, but does not ring the fire dedicated telephone 30. This is because the reverse message waiting time from the fire engine FS is fixed at 10 seconds, and the reverse message is confirmed when the primary incoming number display incoming signal (CAR signal) is detected.

  And since the fire dedicated telephone 30 does not ring, it will not respond to the reverse message. However, if the waiting time is set so that about 6 seconds elapse after the primary call is received, the number display incoming signal (CAR signal) is switched to a ringing signal (IR number) as a secondary incoming call. When the emergency call device 20 detects the calling signal (IR number), the emergency call device 30 rings. The fire telephone 30 responds to this secondary incoming call. Thereby, it is possible to respond to the reverse communication, and the caller and the fire engine FS can talk.

(Operation of the embodiment)
The process flow of the emergency call system 1 during reverse communication will be described using the flowchart shown in FIG.

  First, the emergency call system 1 is set and started (S10). In the event of an emergency such as a fire, the reporter pushes down the fire report button 21 provided in the emergency call device 20 (S11). Then, the automatic voice stored in advance is notified to the fire engine FS for a special number (such as 119) (S12).

  The fire engine FS that has received the report performs reverse communication (call back) to the fire dedicated telephone 30, but the emergency call device 20 that has received the reverse signal receives the number display incoming signal (CAR signal) ) Is determined (S13). Here, there is a difference that the number display incoming signal (CAR signal) is 0.5 second waiting for 0.5 seconds and the calling signal (IR signal) is 1 second calling for 2 seconds. By observing the difference in the calling time, it is determined which signal is the incoming signal.

  If the determination result in S13 is YES, that is, if the incoming signal is a number display incoming signal (CAR signal), the emergency call device 20 does not ring the fire dedicated telephone 30 even if there is an incoming call (S14). If the result of determination in S13 is NO, that is, if the incoming signal is not a number display incoming signal (CAR signal), the emergency call device 20 rings the fire telephone 30 (S16). That is, when the number display is not set, the primary call 30 is ringing as it is because the primary incoming call is a ringing signal (IR signal).

  Next, it is determined whether the incoming number display incoming signal (CAR signal) is a secondary incoming call (S15). In the present embodiment, as described above, the optical gateway device 10 is set so that when the primary incoming call is not answered, the secondary incoming call is received after a predetermined time. If the result of the determination is YES, the emergency call device 20 rings the fire dedicated telephone 30 (S16). If the result of determination in S15 is NO, that is, if the incoming number display incoming signal (CAR signal) is not a secondary incoming call, the determination is repeated.

  If the fire dedicated telephone 30 rings in S16, the reporter picks up the fire dedicated telephone 30 and starts a mutual call with the fire engine FS (S17), and this flow ends and ends (S18).

(Effect of embodiment)
As described above, the emergency call system 1 according to the present embodiment determines that the emergency call device 20 has detected a reverse message when the CAR signal is detected, and does not ring the fire telephone 30 for a certain period of time thereafter. When the IR signal is detected, the fire dedicated telephone 30 is sounded, so that even if the IP line NW is used, it is possible to reliably receive the reverse communication from the fire engine FS.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Emergency call system 10 ... Optical gateway apparatus 20 ... Emergency call apparatus 21 ... Fire notification button 30 ... Fire-only telephone (reception-only telephone)
40 ... This telephone (communication terminal)
NW ... IP line FS ... Fire engine (command stand)

Claims (1)

An emergency call system,
An optical gateway device connected to the IP line;
An emergency call device connected to the optical gateway device;
A reception-only telephone connected to the emergency call device,
When the emergency call device detects a CAR signal, it judges that a reverse message has been detected, and after that, does not ring the reception dedicated telephone for a certain period of time, and if it detects an IR signal, rings the reception dedicated telephone. Emergency call system characterized by.

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