JPS6340441A - Connection circuit for external telephone set fitted to automatic informing device or the like - Google Patents

Abstract

PURPOSE:To protect an urgent information from being interfered by informing an urgent information by cutting off an external telephone, when the priority is required, but enabling the telephone to be used by making information wait when the priority is not required. CONSTITUTION:In case of using the external telephone TEL set during the informing action (for a message not needing a priority) though a contacting point (h) is operating, a contacting point (e) is ON and a contacting point (c) is OFF, therefore, if the telephone TEL is hooked off, a current flows through a current detection circuit T, to stop the current informing action through a contacting point (t). In case of informing with a priority while the telephone set TEL is being used, the current use of the telephone set TEL is detected from the state of the contacting point (t). The contacting points (e) and (c) are turned OFF to forcively cut off the line, then the contacting point (h) is operated to turn to an internal dial circuit side or calling circuit side, etc., and an automatic dialing is executed. Upon response from the opposite, a data, voice message, etc. are transmitted.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is an automatic notification device for crime prevention, automatic dialing when an abnormal input such as a fire is detected, and transmitting the information to the called party through a telephone line. Related to external telephone connection circuits such as.

(Prior art) In this type of automatic reporting device, etc., telephones (external telephones) are often connected in parallel to the telephone line, so an external telephone is used to switch between the automatic reporting device and the external telephone. A connection circuit is provided inside.

FIG. 2 shows a schematic configuration of a conventional automatic notification device 1', where L, L2 are terminals connected to a telephone line, and T
, T2 is a terminal to which an external telephone device is connected, 2' is an incoming call detection circuit, 3' is a current detection circuit, and h is a contact that operates during reporting operation.

Therefore, the operation will be explained in terms of cases as follows.

■External telephone 1'E when no reporting operation is being performed.
When trying to use L → In this case, the contact is on the external telephone device side, the external telephone device is connected to the telephone line, and the external telephone device can be used normally.

■If you try to use an external telephone device while a notification operation is in progress → In this case, the contact is activated and has switched to the internal dialing circuit, etc., so use the external telephone device. I can't.

■When attempting to make a report when the external telephone device is not in use → In this case, the current detection circuit 3' does not detect the call current, so it is determined that the external telephone device is not in use, and the contact is activated. The system then switches to the internal dialing circuit to avoid interference from external telephone equipment, then performs automatic dialing, waits for the other party's response, and then sends data, voice messages, etc.

■If you are trying to make a report while an external telephone device is in use → In this case, how many times has the current been detected? IIIg' detects the communication current, determines that the external telephone device is in use, and waits without making a report.

■When attempting to make a report when an external telephone device is not in use but receives an incoming call → In this case, the incoming call detection circuit 2' determines that an incoming call has occurred, and waits without making a report.

(Problems to be Solved by the Invention) The conventional device operates as described above, but in the case of ■, the external telephone TEI cannot be used even if the report is not urgent. In the case of (2), there was a serious drawback in that even if the report was urgent, such as an emergency call, the report could not be made. In addition, when moving to the next notification destination during the automatic notification operation, the contact is restored and the line is released, but the same situation as described in ■ may occur at that time as well, and the notification operation is obstructed. This was an inconvenience.

Furthermore, since the telephone line is usually connected to the external telephone device through the contacts, there is a drawback that it is not suitable for the specifications of a built-in telephone device.

(Means for Solving the Problems) The present invention has been proposed in view of the above-mentioned points, and its purpose is to improve the importance of reporting when there is a conflict between the use of an external telephone and the reporting operation. To provide a connection circuit for an external telephone such as an automatic reporting device that is suitable for the specifications of a built-in telephone device by giving priority to one of the two depending on the nature of the telephone so as not to interfere with reporting and the use of an external telephone. It is in.

In order to achieve the above object, the present invention provides crime prevention.

Automatic notification devices, etc. that automatically dial when an abnormal input such as a fire is detected and transmit that information to the called party through a telephone line, distinguish between calls that do not need to be prioritized and those that need to be prioritized. When there is a conflict between the use of an external telephone connected in parallel to the telephone line and the reporting operation, if the report requires priority, the external telephone is disconnected and the report is made, and the report does not need to be prioritized. In the case of a report, the gist is to wait for the report and allow the use of an external telephone.

(Example) DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to drawings showing embodiments.

FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention, in which the present invention is applied to an automatic notification device, and only the external telephone connection circuit section is shown.

In FIG. 1, 1 is an automatic notification device, L,.

L2 is a terminal connected to a telephone line, and T, T2 are terminals connected to an external telephone device. Inside the automatic notification device 1, a terminal is turned on and off by raising and lowering the handset of a telephone (not shown) built into the automatic notification device 1.
The dial circuit 2 is connected to a telephone call circuit (not shown) or the like via a hook switch H3 that turns off, and the terminal L2 is a direct dial circuit.

Connected to a telephone circuit, etc. Also, hook switch F
[The movable point and the normally open point of the contact are connected to both ends of S, the movable point and the normally closed point of the contact e are connected between the terminal L1 and the normally closed point of the contact, and the normally open point of the contact The connection point between the closed point and the normally closed point of the contact e is connected to the terminal T via the movable point of the contact C, the normally closed point, and the current detection circuit T, and the terminal T2 is directly connected to the terminal L2. The current detection circuit T is, for example, a relay coil of a relay, and a DC voltage +V is applied to its contact t via a resistor R, and a signal corresponding to the on/off of the contact t is sent to a microcomputer, etc. in the automatic notification device 1. I'm trying to incorporate it into Further, 2 is an incoming call detection circuit, which detects a pulse when a call arrives and notifies the microcomputer in the automatic reporting device 1 to that effect.

The operation of each contact and switch is as follows.

l): Operates while the line is closed during a reporting operation e: Operates during a reporting operation that requires priority C: Operates when dial pulses are being sent, the line is open during a reporting operation that requires priority 2 Operates when the line is forcibly disconnected t: Operates while the line of the external telephone device is closed H5: Operates when the built-in telephone is off-hook.The operations will be explained in terms of cases as follows.

■If you try to use an external telephone device when reporting is not in progress → In this case, the contact point is on the external telephone TEI,
Contact e is on, contact C is on, and the external telephone device is connected to the telephone line and can be used normally as an external telephone device+. Furthermore, when the handset of the built-in telephone is off-hook in this state, the hook switch H5 is turned on, and the internal communication circuit is connected to the telephone line, allowing three-way communication.

■If you try to use the external telephone while a reporting operation (report that requires priority) is in progress → In the case of case B, the contact operates and the internal dial circuit 2
The telephone line has been switched to the telephone circuit, etc., and contact e is also off, making it impossible to use the external telephone device.

■If you try to use the external phone while a report is being made (a report that does not need to be prioritized) → In this case, the contact will operate and the internal terminal circuit 2
It has been switched to the communication circuit, etc., but contact e is on.
Since contact C is on, when the external telephone device is off-hook, current flows to the current detection circuit T, which is transmitted to the microcomputer etc. via contact t, processing such as stopping the notification is performed, and the external telephone device Allows use of telephone equipment.

■When attempting to make a report (a report that requires priority) when the external telephone device is not in use → In this case, it is detected that the external telephone TEI is not in use based on the state of contact t, and the contact Switch the internal dialing circuit 2 to the call circuit, etc., turn off contact e to prevent interference from external telephone equipment, then perform automatic dialing, wait for the other party's response, and then send the data.
Sends voice messages, etc.

■If you try to make a report when the external telephone device is not in use (a report that does not require priority) = 8- → In this case, it is detected that the external telephone device is not in use based on the state of contact t. , operate the contacts to switch the internal dialing circuit 2 to the call circuit, etc., keep contact e on, perform automatic dialing, wait for the other party's response, and then send data, voice messages, etc. In this case, since the external telephone device is connected to the telephone line via contacts Q and C, contact C is turned off during automatic dialing to prevent resonance.

■If you decide to make a report (a report that requires priority) while the external telephone device is in use → In this case, it is detected that the external telephone device is in use based on the state of contact t, but Since this is a report that should be given priority, the line is forcibly disconnected by turning off contacts e and c, the contacts are activated and switched to the internal dialing circuit 2 call circuit, etc., automatic dialing is performed, and the caller waits for the other party to answer. Sends data, voice messages, etc.

■If you try to make a report (a report that does not need to be prioritized) while the external telephone device is in use → In this case, it is detected that the external telephone device is in use based on the state of contact t, and priority is given. Since it is not a report that should be made, the system waits without making a report.

■External telephone set E L is not in use, but when an incoming call is received and a notification is to be made - In this case, the incoming call detection circuit 2 determines that an incoming call is occurring and waits without making a notification.

In addition, although the said Example demonstrated the case where this invention was applied to an automatic reporting device, it is not limited to this.

(Effects of the Invention) As described above, the present invention provides an automatic notification device, etc. that performs automatic dialing when an abnormal input such as crime prevention or fire is detected and transmits the information to the called party through a telephone line. In this system, reports are divided into those that do not need to be prioritized and those that need to be prioritized, and when there is a conflict between the use of an external telephone connected in parallel to the telephone line and the reporting operation, the reports that need to be prioritized are classified into those that do not require priority and those that do. In such cases, the external telephone is disconnected and the report is made, and in the case of a report that does not require priority, the external telephone can be used after waiting for the report. (a) Emergency calls such as emergency calls Reports that require this information will not be obstructed.

(b) For non-emergency calls, it is possible to use an external telephone, so there is no inconvenience.

There are other effects.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram showing an embodiment of the external telephone connection circuit of the present invention, and FIG. 2 is a conventional circuit diagram. TT! : r, External telephone, 1. Automatic notification device, 2. Incoming call detection circuit, T. Current detection circuit, h. . ,c,t. Contact, [(S... hook switch,
L,, L,, T,, T2・One person for terminal

Claims (1)

[Claims] In automatic reporting equipment, etc. that automatically dials when an abnormal input such as a crime prevention or fire is detected and transmits that information to the called party through a telephone line, it is necessary to prioritize reports that do not need to be prioritized. When there is a conflict between the use of an external telephone connected in parallel to the telephone line and the reporting operation, if the report requires priority, the external telephone must be disconnected and the report given priority. An external telephone connection circuit for an automatic reporting device or the like, characterized in that in the case of a report without a notification, the external telephone can be used by waiting for a report.