JPH07307811A - Security telephone system - Google Patents

Abstract

PURPOSE:To quickly and surely conduct emergency notice through an external line by disconnecting the connection of an external line in a busy state (during dialing or talking) upon the detection of occurrence of emergency or releasing the setting of external line call inhibit. CONSTITUTION:When a fire alarm sensor 15a or a gas sensor 16a detects the breakout of a fire or gas leakage, a main control section 8 receives the detecting signal and security telephone slave sets 22a-23b ring an emergency tone. Then the main control section 8 discriminates whether or not both external lines 1, 2 are busy and controls a trunk line circuit when the both are busy to disconnect either or both of the external lines 1, 2 thereby attaining an emergency telephone notice through the external line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security telephone device having a function of detecting and notifying an emergency such as a fire or a gas leak.

[0002]

2. Description of the Related Art In recent homes and the like, there has been used a security telephone device in which a telephone is provided with an alarm device for informing residents and neighboring residents of the occurrence of fires, gas leaks and the like. With this security telephone device, when a fire sensor detects a fire, when a gas sensor detects a gas leak, or when an emergency button is pressed (turned on), an alarm is sent all at once from the emergency bell and security cordless handsets. It is making a sound.

In such a security telephone device, for example, it is common to inform the fire department of a fire by telephone. In this case, if all the outside lines are busy (busy), it is not possible to report an emergency by telephone.
As a means for solving this inconvenience, an example is known in which an emergency can be reported by telephone through an outside line even when all outside lines are being used. For example, in the "emergency external line transmission method" disclosed in Japanese Patent Laid-Open No. 3-209956, private branch exchanges respectively installed in two buildings are connected by a dedicated line. If an emergency occurs in this one building and all the outside lines connected to the private branch exchanges in this building are in use, through an empty outside line connected to the private branch exchanges in the other building, The emergency situation can be transmitted outside.

[0004]

However, in the above-mentioned conventional example, in the example of the publication, only when all the outside lines connected to the private branch exchange installed in one building are in use, they are installed in the other building. It is possible to make an outside line call, and it is not possible to deal with the case where a prohibition on an outside line call that allows only an extension line call is set. This outside line transmission prohibition restriction can be set and released by button input operation, but in an emergency situation when it is disturbed, the operator can reliably perform the input operation (special number input operation) for releasing the outside line transmission prohibition restriction. There is a problem that it is difficult to do.

The present invention has been made under such a background, and an emergency call can be made promptly and surely regardless of whether the telephone is in use or not, regardless of whether or not the outside line transmission is prohibited, in the event of an emergency. The purpose is to provide a security telephone device that can be used.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 can set the prohibition of outside line transmission, as well as the connection of one or a plurality of outside lines and extension lines to be accommodated and the processing of telephone calls, and A security telephone device receiving a detection signal from the detection means when the emergency detection means detects an emergency, wherein the outside line transmission prohibition is set when the detection signal is input from the emergency detection means. Determination means for performing a first determination as to whether or not all of the outside lines to be accommodated are in use, and
If the determining means determines that "external line transmission prohibition is set", the external line transmission prohibition setting is canceled,
If it is judged that "all outside lines are in use", it is equipped with a control means for disconnecting the line connection of at least one outside line to enable the outside line transmission for emergency contact. It has a feature.

According to the second aspect of the present invention, the connection of a plurality of outside lines and extension lines having the representative reception telephone number and the processing of the call can be set, and the outside line transmission prohibition can be set, and the emergency detecting means detects an emergency. A security telephone device receiving a detection signal from the detection means, and when the detection signal is input from the emergency detection means, a first judgment as to whether or not the outside line transmission prohibition is set, and And / or a judgment means for making a second judgment as to whether or not all of the accommodated outside lines are in use, and if the judgment means determines that "outside line transmission prohibition is set", the outside line transmission If the prohibition setting is released and it is determined that "all outside lines are in use", disconnect the line connection of at least one outside line other than the above representative reception phone number and make an outside line for emergency contact. Controllable It is characterized by comprising; and a that control means.

According to a third aspect of the present invention, in the security telephone device according to the first or second aspect, voice synthesis generating means is provided, and when disconnecting the line connection of an external line which is being used, the control means causes a voice call. After the notification of "disconnecting the line connection" from the combination generating means is sent to the line being connected, the control for disconnecting the line connection is performed.

Further, the security telephone device according to a fourth aspect is provided with automatic telephone number sending means for automatically calling an emergency destination with a telephone number set in advance in the configuration according to the first or second aspect, and is connected to a line. The control means activates the automatic telephone number sending means when the setting for disconnecting the outside line or releasing the setting for prohibiting outside line calling is performed, and the control for automatically calling the emergency notification destination by the preset telephone number is configured. is there.

Furthermore, the security telephone device according to claim 5 has at least a fire sensor or a gas sensor as the emergency detection means, and is provided with a voice synthesis generation means, and the fire sensor or the gas sensor detects an emergency, Further, when the judgment means judges that "all outside lines are in use", the control means causes the voice synthesis to generate a synthesized voice corresponding to the emergency detected by the fire sensor or the gas sensor. It is a configuration in which, after sending out from the means to the line being connected and notifying the caller, the line connection is controlled.

[0011]

In the security telephone device according to the first aspect, when an emergency call is to be made in an emergency, if the outside line call prohibition is set, the outside line call prohibition setting is automatically canceled to make an emergency call using the outside line. Get ready to go. Alternatively, when all outside lines are in use, at least one outside line is automatically disconnected so that an emergency call can be made. Therefore, regardless of the use state of the telephone or whether or not the outside line transmission prohibition setting is set, the emergency notification through the outside line can be promptly and reliably performed.

Further, in the security telephone device according to the second aspect, when an emergency call is to be made in an emergency, if the outside line outgoing call prohibition is set, the outside line outgoing call prohibition setting is automatically canceled to make an emergency call on the outside line. Be ready to contact you. Alternatively, when all the outside lines are in use, at least one line connection of the outside lines other than the representative telephone number is automatically cut off so that an emergency call can be made. Therefore,
Accommodating a large number of outside lines, for example, without disconnecting the line connection of the outside reception line of a representative reception phone number of a company or the like, without stopping the reception of the outside line You can avoid the confusion caused by the stoppage.

Further, when the external telephone line connection being used is disconnected, the security telephone device according to the third aspect sends a notice of synthetic voice to the effect that the line is disconnected, to the connected line.
After this, the line is disconnected. Therefore, the reason for disconnecting the line connection of the external line, for example, in order to notify the telephone of an emergency situation of a fire occurrence, is surely notified to the caller that the line connection of the external line is disconnected, and then this interruption is made. It enables quick re-calling between callers.

Further, in the security telephone device according to the fourth aspect, when the connection line for the outside line is disconnected or the setting for prohibiting the outside call is released, the emergency notification destination is automatically called by the preset telephone number. It Therefore, when the situation is distracted in an emergency, the notification can be made promptly and reliably.

Furthermore, the security telephone device according to the fifth aspect detects an emergency, and when it is determined that all outside lines are in use, the detected emergency content, for example, fire occurrence or gas leakage occurrence. Is sent to the connected line as a synthetic voice to notify the caller, and then the line is disconnected. Therefore, the caller is quickly notified of the occurrence of the emergency.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a block diagram showing the electrical configuration of the first embodiment of the security telephone device of the present invention. In FIG.
This example is a security telephone device installed in a two-family house or the like, and is provided with a main device 5 that controls the entire system and accommodates outside lines 1 and 2. The main device 5 is provided with a main control unit 8 for controlling the entire system, a TV intercom interface (I / F) circuit 9, and a sensor relay unit 40 for connecting (accommodating) a sensor such as a fire. There is. Further, in this telephone system, slave units are separately connected to the tenants A and B in the main unit 5. For example, a child machine is arranged in two living parts of a two-family house.

In this configuration example, both tenants A and B have the same child device. The tenant A is connected to the sensor relay unit 40 and outputs a detection signal when detecting a fire, a gas sensor 16a which outputs a detection signal when detecting a gas leak, and a human finger There is provided an emergency button 17a which is pressed at a time and then pressed again to release an emergency. Further, a security control unit 18a is provided which receives a detection and pressing signal through the sensor relay unit 40 and outputs the detection signal and the pressing signal to the main control unit 8.

Further, the tenant A is connected to a TV door phone monitor 20a for displaying a picture of a visitor or the like at one of the entrances of a two-family house and having a conversation with a module connector (plug, jack) not shown. There are provided security telephone subunits 22a and 23a for making an outside call or an extension call under the control of the main unit 5 and a security sound with the facsimile machine 21a. Furthermore, a TV intercom 11a for capturing an image of a visitor or the like at one of the entrances in a two-family house and having a conversation, and an intercom 12a arranged at an entrance outside the entrance, for example, a selfish entrance, are provided. There is.

The tenant B also has the same structure as the tenant A, and has a fire sensor 15b connected (accommodated) to the sensor relay section 40, a gas sensor 16b, and an emergency button 17b.
And a security control unit 18b. Furthermore, a TV door phone monitor 20b for displaying a conversation of a visitor or the like at the other entrance of a two-family house, a facsimile machine 21b connected by a module connector (plug, jack) not shown, and a security telephone. Machines 22b and 23b are provided. Furthermore, a TV door phone 11b for capturing an image of a visitor or the like at the other entrance of the two-family house and having a conversation.
An entrance outside the entrance, for example, a door phone 12b arranged at an arbitrary entrance is provided.

FIG. 2 is a block diagram showing a detailed structure of the main control section 8. In FIG. 2, the main control unit 8 is connected to the outside line 1 to process an incoming and outgoing call.
A station line circuit 42 that is connected to the outside line 2 to process incoming and outgoing calls and an extension circuit 45 that processes signals of the facsimile machine 21a and the security telephone subunits 22a and 23a on the tenant A side are provided. Further, the facsimile machine 21b and the security telephone slave unit 22 on the tenant B side
The extension circuit 46 for processing the signals b and 23b, and the external line 1,
A call path switch 48 that captures various ring tones together with selection switching of 2 and incoming, outgoing and extension connections
And a call path switch 4 by selecting various ringing tone signals from incoming circuits, outgoing circuits and extension lines from each circuit described below.
8 and a signal supply connection section 49 for outputting to 8 are provided.

Further, a security sound signal generation unit 5 for generating and transmitting a security sound signal to the main control unit 8
0, an outside line ringing tone signal generation unit 51 that generates and sends out an outside line ringing tone signal, outside lines 1 and 2 are connected to a public telephone line network of dial pulse lines, and a facsimile machine 21
Tone signal generation unit 5 for converting dial pulse into a dual tone signal and transmitting the dual tone signal when a and 21b and security telephone slave units 22a to 23b are of touch-tone type.
2 and are provided.

Further, an intercom ringtone signal generation section 53 for generating and transmitting an intercom ringtone signal, an intercom control section 60 for controlling activation of the TV intercoms 11a, 11b and the intercoms 12a, 12b, and the telephone system. ROM storing control program, RA for working
A microprocessor (MPU) 64 including an M, an I / O circuit, a clock generator, and the like is provided.
Further, there is also provided a holding sound signal generation unit which generates and sends an outside line holding sound, which is not shown.

FIG. 3 shows security telephone slave units 22a-23.
It is a block diagram which shows the electric schematic structure of b. In FIG. 3, the security telephone handsets 22a to 23b are connected to the main device 5 to perform connection signal processing, and to perform telephone signal (speech processor) 28a that performs amplification of a reception signal and a transmission signal and sidetone processing. And a handset (handset) 28b for conversation between the outside lines 1 and 2 and the extension line through the telephone circuit 28a. Further, a control unit 28c using a microprocessor (MPU), a digital signal processor (DSP), etc., and an L for displaying the setting contents such as an input telephone number and an outside line transmission prohibition restriction on the screen.
The input / output signal is connected between the CD 28d, a keyboard 28e for instructing input of telephone numbers, selection of external lines 1 and 2 and extension numbers and holding of external lines, and the control unit 28c, LCD 28d and keyboard 28d. And an I / O circuit 28f for processing

Next, the operation of the first embodiment will be described. For an outside call using the security telephone device having the configuration shown in FIGS.
The PU 64 identifies it. MPU64 based on this identification
Controls the extension circuits 45 and 46, the communication path switch 48, and the signal supply connection section 49. With this control, the ring tone signal from the outside line ring tone signal generation unit 51 is transmitted to the facsimile machines 21a and 21b of the tenants A and B and the security telephone slave unit 22.
a to 23b.

This call causes ringers (not shown) of the security telephone handsets 22a-23b to ring. Based on this call, the security telephone handsets 22a-2
When one of 3b switches the outside lines 1 and 2 or the off-hook for picking up the receiver is performed, the off-hook signal is sent to the MPU 6 through the extension circuits 45 and 46.
4 identifies. Based on this identification, the MPU 64 controls the office line circuits 41, 42 and the speech path switch 48, and detects the response of one of the outside lines 1 and 2 that has received the call, and connects the line with the telephone exchange network (central office exchange). (Call closing). After that, the call path restoration process in the public switched telephone network is performed based on the call with the destination telephone and the end signal by the on-hook at the end of the call. The facsimile machines 21a and 21b operate similarly.

When making an extension call, the outside lines 1 and 2 are used.
The incoming call response of any of the above is held and the extension call between the tenants A and B is performed. Alternatively, an extension call is made between tenants A and B. In this case, when any of the security telephone subunits 22a to 23b calls an extension by pressing an extension button divided by an extension number (not shown), the security telephone subunit 22a is controlled by the MPU 64 through the extension circuits 45 and 46. 23b and end of extension call.

In the operation of the outside line call and the inside line call, it is possible to set the outside line call prohibition for prohibiting the outside line call. This setting is set from the security telephone handsets 22a to 23b shown in FIG. 1, a predetermined key (special number) in the keyboard 28e shown in FIG. 3 is pressed, and a setting instruction signal by this pressing is sent to the I / O circuit. 28f,
It is sent to the main control unit 8 in the main device 5 shown in FIG. 1 through the control unit 28c and the telephone circuit 28a. In the main controller 8, an outside line transmission prohibition flag indicating setting / cancellation of outside line transmission prohibition is set in a working RAM (not shown) of the MPU 64 shown in FIG. Subsequent external line transmissions from the security telephone sub-units 22a to 23b are identified by looking at the content of the external line prohibition setting flag in the working RAM, and the external lines are transmitted by controlling the station line circuits 41 and 42. Is controlled so that it cannot be performed. In this case, only the extension call can be made. Further, like the case of the setting, the prohibition setting of the outside line call transmission is also performed by pressing a predetermined key (special number), and the data set in the working RAM is also erased.

In the TV doorphone call, the TV doorphone 11
The chime signal from a is transmitted through the doorphone control unit 60 to the M
The PU 64 takes in, and the intercom control unit 60 controls the signal supply connection unit 49, and the chime sounds through the processing of the intercom ringtone signal generation unit 53, the extension circuits 45 and 46, and the intercom control unit 60. Further, the doorphone control unit 60 controls power supply (startup) to the TV doorphone 11a. At the same time, the image pickup signal is sent out to the TV intercom monitor 20a through the TV intercom I / F circuit 9 to be displayed, and a conversation is conducted using a handset (handset). In addition, the doorphone 12a and the TV doorphone monitor 20a
There is a voice-only conversation with the TV.
This is similar to the case of the doorphone 11a. Also, tenant B
TV intercom 11b and intercom 12b in
The operation with the V-door phone monitor 20b is similar to the operation in the tenant A.

Next, the security operation will be described.
FIG. 4 is a flowchart showing the processing procedure of this security operation. Here, only tenant A will be described. The tenant b operates similarly. 1 to 4, when the fire sensor 15a detects a fire or the gas sensor 16a detects a gas leak, this detection signal is sent to the main control unit in the main device 5 through the sensor relay unit 40 and the security control unit 18a. 8 takes in (step SP1
0). This capture is performed by the MPU 64 in the main control unit 8.
For example, monitoring is performed by polling processing or interrupt processing, and the monitoring is performed based on this monitoring.

Next, the MPU 64 sends a control signal for instructing an emergency alert to the security telephone slaves 22a-23b, and the security telephone slaves 22a-23b shown in FIG.
Under the control of the control unit 28c in the handset 28b
Make an emergency sound from the speaker (step SP1)
1). Next, the MPU 64 in the main controller 8 determines whether both the outside lines 1 and 2 are in use (step SP12).
If both outside lines 1 and 2 are in use (Yes), MPU
64 controls the station line circuits 41 and 42 in FIG. 2 to control the disconnection of one or both of the outside lines 1 and 2 (step SP13). Outer lines 1 and 2 at step SP12
If one or both of them are not used (No), the process proceeds to step SP16 to report an emergency, for example, call a fire station to the fire station about a fire using an empty outside line. After step SP13, it is determined by checking the working RAM (not shown) of the MPU 64 whether or not the outside line transmission prohibition is set (step SP14). If this outside line calling prohibition is set (Yes), this outside line calling prohibition is MP
It is released under the control of U64 (step SP15). After this release and if the outside line transmission prohibition is not set in step SP14 (No), a call is made through the outside lines 1 and 2 and an outside line call is made to notify an emergency (step SP16).

Second Embodiment In this second embodiment, when accommodating a large number of outside lines, a telephone number is set so that the line connection is not disconnected in an emergency. For example, when an outside line of the representative telephone number is in use at a company or the like, the outside line of the representative telephone number does not disconnect the line connection in an emergency to prevent confusion by outsiders. . FIG. 5 is a flowchart showing the processing procedure of the second embodiment. 5, it is assumed that a large number of outside lines are accommodated in addition to the outside lines 1 and 2 shown in FIG. 1, and the main device 5 is a private branch exchange. First, when the fire sensor 15a detects a fire or the gas sensor 16a detects a gas leak, the main control unit 8 in the main device 5 takes in the detection signal through the sensor relay unit 40 and the security control unit 18a (step SP2
0). This acquisition control is performed by the MPU 64 in the main control unit 8.
However, for example, it is monitored by polling processing or interrupt processing, and is performed based on this monitoring.

Next, the MPU 64 sends a control signal for instructing an emergency alert to the security telephone slave units 22a-23b, and the security telephone slave units 22a-23b shown in FIG.
Under the control of the control unit 28c in the handset 28b
Make an emergency sound from the speaker (step SP2)
1). Next, it is determined whether or not all the outside lines are in use by the M in the main control unit 8.
The PU 64 makes a determination (step SP22). Next, it is determined whether or not an outside line of a priority telephone number that does not disconnect the line connection in the event of an emergency has been set (step SP2).
3). In step SP23, if the outside line of the priority telephone number is set (Yes), the MPU 64 disconnects the line of the telephone number, for example, one or all outside lines other than the representative telephone number of the company in FIG. This is performed by controlling all the station line circuits (step SP24).

If the outside line of the priority telephone number is not set in step SP24 (No), all or all of the office line circuits of the outside line are controlled to disconnect the line connection of the outside line. (Step SP25). Next, it is determined whether or not the outside line transmission prohibition is set by checking the working RAM (not shown) of the MPU 64 (step SP2).
6). When this outside line calling prohibition is set (Yes
s), this outside line transmission prohibition is released under the control of the MPU 64 (step SP27). After this release and step SP
If outgoing call prohibition is not set in 22 (No)
Makes a call through an outside line to make a call to inform of an emergency (step SP28).

[Third Embodiment] In the third embodiment, in the first and second embodiments,
When an external connection is to be disconnected when an emergency occurs, the line is interrupted immediately before the disconnection to notify the caller of the disconnection. FIG. 6 is a block diagram showing the main configuration of the third embodiment. 6, in this example, a voice synthesis circuit 56 is provided together with the MPU 64 in the configuration shown in FIG. With this configuration, in the flow chart of the first embodiment shown in FIG. 4, immediately before the disconnection of the line connection at step SP13 or steps SP24 and 25 shown in FIG. This line is disconnected in order to make an emergency call. Please call again later. "A synthesized voice is read from the voice synthesis circuit 56 under the control of the MPU64. This voice synthesis signal is transmitted to the local line circuit 4
1 and 42 to notify the callers (calling side and receiving side). After this, the MPU 64 switches the station line 4 shown in FIG.
1, 42 are controlled to disconnect the line connection.

Further, the fire sensor 15a or the gas sensor 1
When the main control unit 8 in the main unit 5 takes in the detection signal from 6a, the step SP13 or FIG. 5 in the flowchart of the first embodiment shown in FIG. Notified immediately before disconnection of the line connection in steps SP24 and 25 shown in, for example, read a synthetic voice "fire has occurred" or "gas leak has occurred" from the voice synthesis circuit 56 under the control of the MPU64. I will This voice synthesis signal is sent to the office line circuits 41 and 42 to notify the callers (originating side and receiving side). After this, the MPU 64 executes control to disconnect the line connection.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and the design can be made within the scope not departing from the gist of the present invention. Modifications are free and are included in the present invention. For example, in the above-described first embodiment (FIG. 4), the case where the outside line is being used is judged first, and then the outside line transmission prohibition setting is made is judged. However, instead of this, it may be possible to first determine whether or not the outside line transmission prohibition setting is made, and then determine whether or not the outside line is being used. Also, if necessary, it only determines whether the outside line is in use,
The determination as to whether or not the outside line transmission prohibition setting is made may be omitted, or vice versa. Further, at the same time as disconnecting the line connection, a preset telephone number, for example, a fire station or a gas company can be automatically called (auto dial).

[0037]

As is apparent from the above description, according to the security telephone device according to the first aspect, when an emergency call is to be made in an emergency, when an outside call is prohibited, an outside call is made. The prohibition setting is automatically released. Alternatively, when all the outside lines are in use, the line connection of at least one outside line is automatically disconnected. Therefore, regardless of how the telephone is used and whether or not the outside line transmission prohibition is set, it is possible to quickly and surely perform the emergency notification through the outside line.

Further, according to the security telephone device of the second aspect, when an emergency call is desired in an emergency and the outside line call prohibition is set, the outside line call prohibition setting is automatically canceled. Alternatively, when all outside lines are in use, at least one line connection of the outside lines other than the representative telephone number is automatically disconnected. Therefore, it is possible to carry out an emergency notification through an outside line that accommodates a large number of outside lines, for example, without disconnecting the line connection of the outside line of the representative reception telephone number of a company or the like and without stopping the telephone reception. You can avoid the confusion caused by the phone stoppage.

According to another aspect of the security telephone device of the present invention, when disconnecting the line connection of the external line in use,
A synthetic voice notification indicating that the line is to be disconnected is sent to the connected line, and the line is disconnected thereafter. Therefore, the fact that the line connection of the outside line is disconnected is surely notified to the caller. This allows quick re-calling between interrupted parties.

Further, according to the security telephone device of the fourth aspect, when the external line is disconnected or the setting for prohibiting the external line is released, the emergency notification destination is automatically issued by the preset telephone number. Since it is called, the notification in case of distress in an emergency can be made quickly and reliably.

Furthermore, according to the security telephone device of the fifth aspect, when an emergency is detected and it is determined that all outside lines are in use, the detected emergency content, for example, fire occurrence or gas. A notification of the occurrence of leakage is sent to the connected line by a synthetic voice to notify the caller, and then the line is disconnected. Therefore, the caller is quickly notified of the occurrence of the emergency.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a first embodiment of a security telephone device according to the present invention.

FIG. 2 is a block diagram showing a detailed configuration of a main control unit in FIG.

3 is a block diagram showing an electrical schematic configuration of a security telephone slave unit in FIG. 1. FIG.

FIG. 4 is a flowchart showing a processing procedure of a security operation in the embodiment.

FIG. 5 is a flowchart showing a processing procedure of a second embodiment.

FIG. 6 is a block diagram showing a main configuration of a third embodiment.

[Explanation of symbols]

8 main control section 8 (judgment means, control means) 15a, 15b fire sensor (emergency detection means) 16a, 16b gas sensor (emergency detection means) 18a, 18b security control section (judgment means,
Control means) 22a to 23b Security telephone cordless handset 41,42 Station line circuit 45,46 Extension circuit 56 Voice synthesis circuit (voice synthesis generation means, automatic telephone number transmission means)

Claims (5)

[Claims] 1. The connection of a single or a plurality of external lines and internal lines to be accommodated and the processing of a call can be set, and an external line transmission prohibition can be set, and when the emergency detection means detects an emergency, the detection signal is supplied from the detection means. A security telephone device for receiving, when the detection signal is input from the emergency detection means, a first determination as to whether or not the outside line transmission prohibition is set,
And / or a judging means for making a second judgment as to whether or not all of the accommodated outside lines are in use, and if the judging means judges that "the outside line transmission prohibition is set", the outside line Cancel the call barring setting,
If it is judged that "all outside lines are in use", it is equipped with a control means for disconnecting the line connection of at least one outside line to enable the outside line transmission for emergency contact. A featured security telephone device. 2. The connection of a plurality of outside lines and extension lines having a representative reception telephone number and the processing of a call can be set, and the outside line transmission prohibition can be set, and when the emergency detecting means detects an emergency, the detection signal of the detecting signal is sent from the detecting means. A security telephone device to be supplied, wherein when the detection signal is input from the emergency detection means, a first determination is made as to whether or not the outside line transmission prohibition is set,
And / or a judging means for making a second judgment as to whether or not all of the accommodated outside lines are in use, and if the judging means judges that "the outside line transmission prohibition is set", the outside line Cancel the call barring setting,
If it is judged that "all external lines are in use", the control means for disconnecting the line connection of at least one external line other than the representative reception telephone number to enable external line transmission for emergency contact. A security telephone device comprising: 3. A voice synthesis generating means is provided, and when disconnecting a line connection of an external line which is being used, the control means connects a notification of "disconnect line connection" from the voice synthesis generating means. The security telephone device according to claim 1 or 2, wherein control is performed to disconnect this line connection after sending out to the inside line. 4. The control is provided when an automatic telephone number transmitting means for automatically calling an emergency notification destination with a preset telephone number is provided to disconnect the line connection or release the setting for prohibiting an outside call. 3. The security telephone apparatus according to claim 1, wherein the means activates the automatic telephone number sending means to perform control to automatically call an emergency notification destination with a preset telephone number. 5. The emergency detecting means includes at least a fire sensor or a gas sensor, and a voice synthesis generating means, the fire sensor or the gas sensor detects an emergency, and the determining means "all external lines When it is determined that it is in use ', the control means sends a synthetic voice having contents corresponding to the emergency detected by the fire sensor or the gas sensor from the voice synthesis generating means to the connected line to make a call. The security telephone device according to claim 1 or 2, wherein control is performed to disconnect the line connection after the person is notified.