JP2000022848A - Line switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the running costs such as the basic tariff of a telephone line by judging whether a call is incoming from a previously registered party or not while utilizing a caller number notice service, and switching the line of a terminal side to be connected in the cases of the preset party and non-set party. SOLUTION: When a call is originated from a general terminal 18 to a general analog terminal 17, the call is incoming from a telephone line 13 to a line switching device 16 and the telephone number of the general terminal 18 is sent. The line switching device 16 collates a telephone number on the side of call origination with a previously registered party's number and when the telephone number is judged as a non-registered number, the call is connected with the general analog terminal 17. Besides, a monitoring device 5 originates a call to a device 1 to be monitored and the line switching device 16, which terminates this call, identifies the telephone number of the monitoring device 5. When it is coincident with the telephone number previously registered in a storage part, the call is connected with the device 1 to be monitored. Thus, communication is enabled with plural terminals while using one telephone line and the basic tariff of the telephone line can be economized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line switching device for switching a terminal connected to a telephone line, and for example, can remotely monitor a monitored device using an existing telephone line. The present invention relates to a line switching device capable of eliminating the need for a telephone line used only.

[0002]

2. Description of the Related Art FIG. 4 is a system configuration diagram showing a relationship between a monitored device and a monitoring device when a conventional monitored device is remotely monitored using a telephone line. In FIG. 4, reference numeral 1 denotes a monitored device, 2 denotes a telephone line interface device for a monitored device that interfaces the monitored device 1 and the telephone line 3, and 3 denotes a monitored device 1 and a monitoring device 5 via a public communication network 6. A telephone line used only to monitor the monitored device 1 between the monitoring device 1 and 4; a monitoring device telephone line interface device for interfacing a monitoring device 5 for performing monitoring control with the telephone line 3; , 6 are public communication networks.

Next, the operation will be described. When the monitored device 1 is remotely monitored by the monitoring device 5, the monitoring device 5 uses the monitoring device telephone line interface device 4 to transmit to the monitored device telephone line interface device 2.
Then, the monitored device telephone line interface device 2 detects the incoming call and responds, confirms the connection with the monitoring device telephone line interface device 4, and then completes the connection between the monitored device 1 and the monitoring device 5. The monitoring device 5 is the monitored device 1
Collect information from

When transmitting information from the monitored device 1 to the monitoring device 5 in an emergency, the monitored device 1 sends a call to the monitoring device telephone line interface device 4 using the monitored device line interface device 2. I do. Then, the monitoring device telephone line interface device 4 detects the incoming call from the monitored device 1 and confirms the connection with the monitored device telephone line interface device 2, and then the connection between the monitoring device 5 and the monitored device 1 is completed. Then, information is transmitted from the monitored device 1 to the monitoring device 5.

[0005]

Since the conventional communication between the monitoring device 5 and the monitored device 1 is performed as described above, a subscriber contract is made for each monitored device 1 to obtain a telephone number. Therefore, if there are a large number of monitored devices 1, it is necessary to make a subscriber contract for the number of monitored devices 1 and obtain a telephone number, and running costs such as a basic telephone line usage fee increase. There were challenges.

[0006] The present invention has been made to solve the above-described problems, and switches the connection destination based on information sent from the caller side, for example, by using a telephone line that has already been laid or that is generally used. Line switching equipment that enables the sharing of telephone lines that are laid down in order to reduce the running costs such as the basic usage charges for telephone lines, eliminating the need for telephone line line contracts that were required for individual terminals. The purpose is to gain.

[0007]

SUMMARY OF THE INVENTION A line switching apparatus according to the present invention uses a caller ID notification service to determine whether an incoming call has been received from a previously registered destination, In this case, there is provided a line switching control means for switching the line on the terminal side to be connected in the case of (1) and in the case of unset.

[0008] A line switching apparatus according to the present invention provides a caller ID identifying means for recognizing a caller number sent by a caller number notification service, and a caller ID identified by the caller number identifying means for a specific call. Caller number determining means for determining whether or not the caller ID is a specific caller number registered in advance in the caller number registering means, and connecting the terminal at the time of an incoming call based on the determination result of the caller number determining means. The line switching control means includes terminal switching means for switching.

A line switching apparatus according to the present invention comprises a terminal accommodating means for accommodating a general analog terminal such as a telephone used by connecting to an analog public line and a terminal such as a monitored device to be remotely monitored, and a specific caller number. When a result of determination that the specific caller number registered in advance in the registering means matches the caller number at the time of the incoming call is obtained by the caller number determining means, the terminal at the time of the incoming call is connected to the monitored device or the like. And a terminal switching means for switching to the terminal.

[0010] A line switching device according to the present invention comprises a call request detecting means for identifying and detecting a call request from a specific terminal, and a terminal switching means for detecting the call request by the call request detecting means. To disconnect other terminals connected to the analog public line, and to provide a specific terminal call request control means for connecting the specific terminal to the analog public line.

[0011] The line switching apparatus according to the present invention is provided with registration means for registering whether to give priority to a call originating from the specific terminal, which is generated when a terminal other than the specific terminal is communicating. It was done.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a system configuration diagram showing a relationship between a monitored device including the line switching device of the first embodiment and a monitoring device, and FIG. 2 is a block diagram showing a configuration of the line switching device of the first embodiment. . The line switching device according to the first embodiment is connected to, for example, an existing telephone line and uses a caller ID notification service of Nippon Telegraph and Telephone Corporation to determine whether or not an incoming call is from a previously registered destination. In accordance with the case of a pre-registered destination and the case of unregistered, the line of the terminal to be connected is switched, and the communication line connecting the monitored device and the monitoring device is changed to an existing telephone line or Running costs, such as basic usage fees, associated with the use of a communication line by making it possible to share with a general telephone line that can be used for other purposes and to eliminate the need to obtain a telephone number used only for monitoring the monitored device. To achieve a reduction.

In FIG. 1, reference numeral 1 denotes a monitored device, 2 denotes a telephone line interface device for a monitored device that interfaces the monitored device 1 with a telephone line 13, 13 denotes a telephone line,
Is a telephone line interface device for a monitoring device which interfaces the telephone line 13 with the monitoring device 5 for performing monitoring control.
Is a monitoring device. Reference numeral 16 denotes a line switching device, 17 denotes a general analog terminal such as a telephone, 18 denotes a general terminal connected to the public communication network 6, and 19 denotes a line switching device maintenance terminal.

In FIG. 2, reference numeral 101 denotes an analog line accommodating trunk (analog public line accommodating means), 102 denotes a general analog terminal accommodating circuit (terminal accommodating means), and 103 denotes an analog terminal accommodating circuit for connection of a monitored device (terminal accommodating means). ),
104 is a switching circuit (line switching control means, terminal switching means), 105 is a caller number identification circuit (caller number identification means), 106 is a control unit (line switching control means, caller number notification correspondence means, caller number) Reference numeral 107 denotes a storage unit (specific caller number registration unit) for registering a destination, etc., and reference numeral 108 denotes a maintenance terminal connection circuit (registration unit).

Next, the operation will be described. First, when a call is made from the general terminal 18 to the general analog terminal 17, a call is received from the telephone line 13 to the line switching device 16, and the telephone number of the general terminal 18 on the calling side is sent. Line switching device 16
Collates the telephone number of the calling side with a pre-registered destination number, and if it is determined to be an unregistered number, connects to the general analog terminal 17 of the normal connection destination. When a call is sent from the monitoring device 5 to the monitored device 1, a call is received from the telephone line 13 to the line switching device 16, and the line switching device 16
Is identified, and the transmitted telephone number is stored in the storage unit 10.
7 is determined to match the dial string of the telephone number registered in advance, and if matched, the connection to the monitored device 1 is established.

Next, the operation of the line switching device 16 of FIG. 2 will be described. First, the telephone number of the monitoring device 5 is registered in the storage unit 107 from the line switching device maintenance terminal 19 in advance. Normally, the switching circuit 104 is set in a state where the analog central office trunk 101 and the general analog terminal accommodation circuit 102 are connected. Analog trunk line accommodation trunk 10
1 receives an incoming call, the caller ID sent from the telephone line 13 is analyzed by a caller ID discriminating circuit 105, and the control unit 10
In step 6, the telephone number is compared with the telephone number registered in the storage unit 107. If they do not match, the switching circuit 104 does not operate, the switching operation is not performed, and the
And the connection with the general analog terminal accommodating circuit 102 is maintained.

On the other hand, if the telephone number matches the telephone number registered in the storage unit 107 in advance, the control unit 106 controls the switching circuit 104 to control the analog office line accommodation trunk 101 and the analog terminal accommodation circuit for connection of the monitored device. Switch to connection with 103. When the communication between the monitoring device 5 and the monitored device 1 is completed and the disconnection of the line is detected, the control unit 106 connects the analog line accommodation trunk 101 and the general analog terminal accommodation circuit 102 which are in the initial state. The switching circuit 104 is restored to the state in which the switch has been set.

As described above, according to the first embodiment, the telephone number of the caller transmitted from the caller through the existing telephone line or the telephone line usable for other purposes. The connection destination is switched according to whether or not the information matches the telephone number information registered in advance. If the information matches, the connection is made with the monitored device 1. If the information does not match, the connection is made with the general analog terminal 17. Therefore, it is possible to share an existing telephone line or a general telephone line that can be used for other purposes, thereby eliminating the need for a dedicated telephone line for monitoring that was required for each monitored device. There is an effect that a line switching device that can reduce running costs such as a basic usage fee associated with the use of a communication line for monitoring the monitoring device 1 can be obtained.

Embodiment 2 The line switching apparatus according to the second embodiment specifies a normally connected line when a call is originated from the terminal side, so that the line can be originated from the terminal. When there is a call request, the line is switched to the non-connection side line to enable a call from the terminal on the non-connection side, and the communication line connecting the monitored device and the monitoring device is changed to an existing telephone line or other communication line. It can be shared with a general telephone line that can also be used for the purpose of (1), thereby realizing a reduction in running costs such as a basic charge associated with the use of a communication line for monitoring the monitored device 1.

FIG. 3 is a block diagram showing the configuration of the line switching apparatus according to the second embodiment. In FIG. 3, the same or corresponding parts as in FIG. Further, the configuration shown in FIG. 1 can be applied to the second embodiment. In FIG. 3, reference numeral 103B denotes a monitored device connection analog terminal accommodation circuit (call request detecting means) having a function of identifying a call request on the monitored device side. Further, the maintenance terminal connection circuit 108 and the control unit 106
Corresponds to the registration means.

Next, the operation will be described. Monitored device 1
When the monitored terminal connection analog terminal accommodating circuit 103B detects a call request from the monitoring device, the control unit 106 recognizes the detection and controls the switching circuit 104 to control the analog office line accommodating trunk 101 and the monitored device connection analog. Terminal accommodation circuit 1
03B is connected. When the control unit 106 detects that the communication between the monitoring device 5 and the monitored device 1 has ended and the line has been disconnected, the control unit 106 controls the switching circuit 104 so that the analog office line accommodation trunk 101 and the general analog terminal accommodation circuit 102 The switching circuit 104 is returned to the first connected state. If the general analog terminal 17 is already in communication, whether the forgoing call is forcibly disconnected to respond to the call on the monitored device 1 side,
Whether to ignore the call request of the monitored device 1 during a call can be registered from the line switching device maintenance terminal 19.

As described above, according to the second embodiment, in response to a call request from the non-connection side line, a call can be made from the non-connection side terminal by switching the line to the non-connection side line. Since the communication line connecting the monitored device and the monitoring device can be shared with an existing telephone line or a general telephone line that can be used for other purposes, the communication line for monitoring the monitored device 1 is used. There is an effect that a line switching device capable of reducing a running cost such as a basic usage fee accompanying use is obtained.

[0023]

As described above, according to the present invention, it is determined whether or not an incoming call has been received from a previously registered destination by using the caller ID notification service. Since the line on the terminal side to be connected is switched between the case where it is not set and the case where it has not been set, the connection destination is switched based on the caller ID information sent from the caller side, for example, the already installed telephone It is possible to communicate with multiple terminals using a line or a single telephone line laid for general use. In such a case, there is no need to use a telephone line contract that was necessary for each terminal Thus, there is an effect that running costs such as a basic charge for telephone lines can be reduced.

According to the present invention, when the caller ID transmitted by the caller ID notification service is recognized by the caller ID identifying means, the caller ID is stored in the specific caller ID registration means in the specific caller ID registration means. The caller number is determined by the caller number determining means, and the terminal switching means is configured to switch the terminal at the time of the incoming call based on the determination result. If the incoming caller ID is a specific caller ID registered in advance, the connection destination can be switched to a specific terminal. For example, one telephone line already laid or one line laid for general use can be used. It is possible to communicate with a plurality of terminals including the specific terminal by using a telephone line, and in such a case, it is not necessary to negotiate a telephone line line contract required for each terminal, and the basic use of the telephone line is eliminated. Fees, etc. There is an effect that can reduce the running cost.

According to the present invention, when the determination result that the specific caller number registered in the specific caller number registration means matches the caller number at the time of the incoming call is obtained by the caller number determination means, Since the terminal switching means is configured to switch the connection destination terminal at the time of the incoming call to a specific terminal such as the monitored device, the caller number transmitted from the caller is registered in advance, for example, the identification of the monitoring device side Caller ID for
The connection destination can be switched to a specific terminal such as a monitored device, and a plurality of terminals including the specific terminal can be switched by using an already laid telephone line or one telephone line laid for general use. In such a case, it is possible to reduce the running cost such as the basic usage fee of the telephone line by obviating the necessity of the line usage contract of the telephone line which was required for each terminal.

According to the present invention, when the call request detecting means identifies and detects a call request from a specific terminal, it controls the terminal switching means to disconnect other terminals connected to the analog public line. And a specific terminal call request control means for connecting the specific terminal to an analog public line is provided, so that there is an effect that communication can be performed with priority given to a call request from a specific terminal. .

According to the present invention, there is provided the registration means for registering whether to give priority to the call originating from the specific terminal, which is generated when a terminal other than the specific terminal is communicating. This has the effect that the priority can be set freely for a call originated at the specific terminal when a terminal other than the specific terminal is communicating.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a relationship between a monitored device including a line switching device according to a first embodiment of the present invention and a hyperopic device;

FIG. 2 is a block diagram illustrating a configuration of a line switching device according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a line switching device according to a second embodiment of the present invention.

FIG. 4 is a system configuration diagram showing a relationship between a monitored device and a monitoring device when a conventional monitored device is remotely monitored using a telephone line.

[Explanation of symbols]

1 monitored device, 16 line switching device, 101 analog office line accommodation trunk (analog public line accommodation means), 1
02 General analog terminal accommodation circuit (terminal accommodation means), 1
03 Analog terminal accommodation circuit for connection of monitored device (terminal accommodation means), 103B Analog terminal accommodation circuit for connection of monitored device (call request detection means), 104 switching circuit (line switching control means, terminal switching means), 105 transmission Caller number identification circuit (caller number identification means), 106 control unit (line switching control means, caller number notification correspondence means, caller number judgment means, specific terminal call request control means, registration means), 107
Storage unit (specific caller number registration means), 108 Maintenance terminal connection circuit (registration means).

Claims (5)

[Claims] 1. A terminal which determines whether or not a call is received from a pre-registered destination by using a caller ID notification service, and connects the terminal to a pre-set destination and to a non-set destination. A line switching device comprising line switching control means for switching lines. 2. An analog public line accommodating means for accommodating an analog public line, a terminal accommodating means for accommodating a terminal used by connecting to the analog public line, a caller ID notification service and an incoming call procedure in the analog public line And a specific caller number registration means for pre-registering a specific caller number, wherein the line switching control means includes a caller transmitted by the caller number notification service. Caller number identification means for recognizing a number; transmission for determining whether or not the caller number recognized by the caller number identification means is the specific caller number registered in the specific caller number registration means in advance Caller number determining means, and terminal switching means for switching the terminal at the time of the incoming call based on the determination result of the caller number determining means. Line switching apparatus according to claim 1, wherein. 3. A terminal accommodating means for accommodating a general analog terminal such as a telephone connected to an analog public line and a terminal such as a monitored device to be remotely monitored, and a terminal switching means for registering a specific caller number. When the result of determination that the specific caller number registered in advance in the means matches the caller number at the time of the incoming call is obtained by the caller number determining means, the terminal at the time of the incoming call is connected to the monitored device or the like. 3. The line switching device according to claim 2, wherein the switching is performed to a specific terminal. 4. A call request detecting means for identifying and detecting a call request from a specific terminal, and when the call request is detected by the call request detecting means,
The apparatus further comprises a specific terminal call request control means for controlling terminal switching means to disconnect other terminals connected to the analog public line and for connecting the specific terminal to the analog public line. 4. The line switching device according to claim 3, wherein: 5. The apparatus according to claim 3, further comprising a registration unit for registering whether to give priority to a call originating from the specific terminal when a terminal other than the specific terminal is communicating. Item 5. The line switching device according to Item 4.