JPH04287465A - Monitor call bypass control system - Google Patents

Abstract

PURPOSE:To bypass information of a monitor subscriber and to collect it to a designat ed specific monitor station in advance with respect to the connection system of a malicious call retrieval connection system from a criminal or the like in the telephone network. CONSTITUTION:The system is provided with a subscriber class discrimination means 5 discriminating whether or not a subscriber B of a called station 2 receiving an incoming call request is a monitor subscriber, supposing that a subscriber A of a caller station 1 is a caller subscriber and a subscriber B of a called station 2 is a monitor subscriber registered for monitor in advance, with an incoming line class discrimination means 6 discriminating whether an incoming line is a general route or a monitor route when the subscriber B is the monitor subscriber, with a bypass route registration table 7 registering in advance a route to be bypassed to the caller station 1 when the subscriber class of the called station 2 is the monitor subscriber and with a talking content monitor means 8 using a monitor device to monitor the talking content to be monitored by the monitor station 3, and an incoming call from the subscriber A to the subscriber B is bypassed forcibly from a general route (1) used normally between the subscribers A, B into the bypass route (2), the call is reached to the subscriber B via the monitor station 3 and the monitor station 3 monitors centralizingly the talking content.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection system for searching for malicious calls from criminals in telephone networks. In recent years, there have been many cases in which telephones have been used in connection with crimes, such as the ability to intercept and record telephone calls from kidnappers, track the location of calls made by criminals, and eavesdrop on incoming calls made to specific surveillance subscribers. There is a growing need for telephone offices and telephones to have the following. In order to address these issues, the telephone network also has connection functions to track criminals. However, as telephone networks become wider in area, there are more and more cases in which a remote originating station is connected to a terminating station via a relay station.

0002

[Prior Art] In the current criminal tracking system, when a subscriber who has registered for monitoring in advance (monitoring subscriber) receives a request for an incoming call,
Since the system collects information at monitoring subscriber reception stations, there is a problem in that monitoring equipment must be installed at all stations. This is because it is necessary to write down the caller's number when connecting a monitoring tape recorder or typewriter for hooking a registered subscriber.

[0003] However, if the monitoring subscriber who monitors wiretapping is a political prisoner, a monitoring device is installed in the detention center to secretly tap incoming calls from general subscribers or outgoing calls from the monitoring subscriber. must be installed. Therefore, monitoring equipment must be installed at every station that accommodates monitoring subscribers, and the number of installed stations becomes enormous, making it necessary to centralize the monitoring stations.

0004

[Problem to be solved by the invention] If monitoring and recording were the only means of monitoring malicious calls, it would have been possible to collect information at the destination station, but in the future it would be possible to combine it with a computer and instantly determine voiceprints. When it becomes necessary to introduce large-scale equipment, it is more cost-effective to install it at a specific small number of stations than to install it at the destination station (that is, at all stations).

[0005] In order to solve the above problem, the present invention collects monitoring calls to a pre-designated specific station (monitoring station) using a detour control method, instead of collecting monitoring subscriber information to a destination station. purpose.

[0006]

[Means for Solving the Problems] A diagram of the principle configuration of the present invention is shown in FIG. In the figure, 1 is the originating station, 2 is the destination station, 3 is the monitoring station, 4 is the relay station, 5 is the subscriber type determination means on the destination side, and 6
7 is a detour route registration table on the originating side, 8 is a call content monitoring means on the monitoring station, 9 is a monitoring request determination means on the terminating side, and 10 is a subscription on the originating side. This shows the person type determination means.

[0007] Subscriber A of originating station 1 is the calling subscriber and terminating station 2
When subscriber B is a monitoring subscriber who has been registered for monitoring in advance, subscriber type determining means 5 for determining whether subscriber B who received an incoming call request at the destination station 2 is a monitoring subscriber; Incoming line type determination means 6 determines whether the incoming line is a general route or a monitoring route when the subscriber is a monitoring subscriber, and a route to be detoured when the subscriber type of the calling station 1 and the destination station 2 is a monitoring subscriber is registered in advance. The monitoring station 3 has a detour route registration table 7 to keep track of, and a call content monitoring means 8 for monitoring the call content to be monitored at the monitoring station 3 with a monitoring device, so that the incoming call from subscriber A to subscriber B is General route usually used between subscriber A and subscriber B■
The system is configured such that the call is forcibly detoured to the detour route (3), the call is received by the subscriber B via the monitoring station 3, and the content of the call is intensively monitored by the monitoring station 3. (Claim 1) When the destination subscriber B is a monitoring subscriber, instead of determining the incoming line type at the destination station 2, the monitoring request determining means 9 provided at the destination station 2
The configuration is configured to determine whether there is a "monitoring request" from. (Claim 2).

When registering the calling subscriber A as a monitoring subscriber, the calling station 1 is provided with a subscriber type determination means 10 configured to determine whether the calling subscriber A is a registered monitoring subscriber. do. (Claim 3)

[0009]

[Operation] The determination means of the present invention will be explained. Subscriber type determination means 5------The destination station 2 side checks whether the subscriber called by the incoming call request is a previously registered monitoring subscriber, and if it is determined to be a monitoring subscriber, it moves to the next monitoring means. , if the subscriber is a general subscriber, normal processing is performed. Incoming line type determination means 6 --- If the called subscriber is a monitoring subscriber, it checks whether the incoming line is a monitoring line or a general line, and if it is a monitoring line, it connects to the called subscriber. , if it is a general line, it will not connect to the called subscriber. Detour route registration table 7
---Detour routes according to subscriber type are registered in memory on the originating station 1 side in advance, so that if the subscriber type is a monitoring subscriber, the detour route can be selected. Call content monitoring means 8 --- A device installed in the monitoring station 3 to monitor the content of calls to the monitoring subscriber.In addition to monitoring and recording, it is also possible to use a device for voiceprint determination by connecting to a computer in the future. Monitoring request determination means 9 determines whether there is a "monitoring request" at the destination station 2, receives the "monitoring request" from the originating station 1 or the monitoring station 3, and connects and releases the call accordingly. Subscriber type determination means 10 --- The calling station 1 side checks whether the calling subscriber is a pre-registered monitoring subscriber, and if it is determined that the calling subscriber is a monitoring subscriber, a detour route is sought and the call is detoured to the monitoring station. , if the subscriber is a general subscriber, normal connection processing is performed.

0010

Embodiment FIG. 2 shows a connection configuration diagram of an embodiment of the present invention. (a) shows Example 1, (b) shows Example 2, and (c) shows Example 3. In the figure, 11 is the originating station A, 12 is the destination station B,
13 is monitoring station C, 14 is relay station D, 15 is originating subscriber A,
Reference numeral 16 indicates called party B, and reference numeral 17 indicates a detour route registration table.

[0011] Processing flowcharts of each embodiment Figs. 3 and 4
, The processing procedure in the connection configuration of each embodiment will be explained with reference to FIG. (Example 1) The processing procedure of the connection configuration of Example 1 of FIG. 2(a) will be explained with reference to the processing flowchart of FIG. 3. (1) Subscriber A makes a call to subscriber B. (2) Upon receiving the call termination request from the originating station 11 to the B subscriber via the relay station 14, the terminating station 12 uses the subscriber type determining means to check whether the B subscriber is a monitoring subscriber. (3) If subscriber B is determined to be a monitoring subscriber, destination 1
The incoming line type is determined by the incoming line type determining means 2. (The incoming line type is either "general" or "monitored" for all incoming lines.)
This information is used to distinguish between calls, and "monitoring" is registered in advance only for routes for monitoring calls, and "general" is registered for other routes. ) (4) When the incoming line type is "general", the destination station 12 interprets that the connection request is not from the route of the monitoring station 13, and the originating station 11
The subscriber type signal of subscriber B (monitoring subscriber) is returned to the subscriber. In this case, incoming calls to subscriber B will not be accepted. (5) The originating station 11 that has received the subscriber type signal (monitoring subscriber) releases the route ■ to the destination station 12 via the relay station 14, and uses the pre-registered detour route registration table 17. A detour route ■ is determined by indexing by subscriber type. (6) The originating station 11 detours the connection route to the monitoring station 13 using the obtained detour route ■. (7) Furthermore, in order to notify the monitoring station 13 that the main call is a call that requires monitoring and needs to be distinguished from general calls, the originating station 11 sends a "monitoring request" signal in addition to the B subscriber number. is transmitted to the monitoring station 3. (8) The monitoring station 13 that received the “monitoring request” signal
The route of the subscriber is determined, and the subscriber number of subscriber B is sent to the determined destination station B as an incoming call request, thereby monitoring the relationship between subscriber A and subscriber B. (9) Terminating station 12, which received the call request to subscriber B, (
Similarly to 2), the subscriber type determining means checks whether subscriber B is a monitoring subscriber. (10) If subscriber B is a monitoring subscriber, the destination station 12 is (3
), the incoming line type is determined by the incoming line type determining means. (11) When the incoming line type is "monitoring", the destination station 12 interprets it as a connection request from the monitoring station detour route (3) and accepts the call to subscriber B. (12) The monitoring station 13 monitors the content of the call between subscriber A and subscriber B using the call content monitoring means. (Embodiment 2) In Embodiment 1, in order to identify whether a detoured call is a monitoring call or not, the monitoring station (station C) must install individual monitoring lines between all other exchanges. This would result in unnecessary installation of monitoring lines. Embodiment 2 is a system that does not require monitoring lines between all other exchanges and allows other stations to be monitored freely. Figure 2 (
The processing procedure of the connection configuration of Example 2 of b) will be explained. (1) 'Subscriber A makes a call to subscriber B. (2) The terminating station 12 that received the call request to subscriber B
Check whether the subscriber is a monitoring subscriber. (3) If subscriber B is a monitoring subscriber, the destination station 12 does not judge the incoming line type as in the case of the above-mentioned principle configuration, but uses the monitoring request judgment means to judge whether there is a "monitoring request". I decided to do so. (A "monitoring request" is a "monitoring request"
A signal meaning ``monitoring request'' is newly defined, and the ``monitoring request'' receiving station connects and releases calls based on this signal. ) (4)'If there is no "monitoring request", the subscriber type number (
(monitored subscriber) and does not accept calls to subscriber B. (5) 'The originating station 11 that has received the subscriber type signal (monitoring subscriber) releases the route ■ to the destination station 12, as in the case of the configuration of the first embodiment, and seeks a detour route ■. (6) 'The originating station 11 detours to the detour route (2) to the monitoring station 13, as in the case of the configuration of the first embodiment. (7)'Furthermore, the originating station 11 transmits the subscriber number of subscriber B and a "monitoring request" signal to the monitoring station 13, as in the case of the configuration of the first embodiment. (8) The monitoring station 13 that received the 'monitoring request' signal
Find the subscriber's route, send the B subscriber number and a "monitoring request" signal to the found route (destination station B) as an incoming call request,
Monitoring between subscriber A and subscriber B is performed. (9) The destination station 12 that received the call request to subscriber B, (
2) Similarly to ', it is checked whether subscriber B is a monitoring subscriber. (10)' If subscriber B is a monitoring subscriber, the destination station 12
Similar to (3)', the presence or absence of a "monitoring request" is determined by the monitoring request determining means. (11)' If it is a "monitoring request", the destination station 12 interprets it as a connection request and allows the call to subscriber B. (12)' At the monitoring station 13, A
The contents of the call between the subscriber and subscriber B are monitored. (Example 3) In the above-mentioned Examples 1 and 2, it is assumed that the receiving subscriber B is the monitoring subscriber, but in this embodiment 3, the calling subscriber A is registered as the monitoring subscriber. is assumed. The processing procedure of the connection configuration of the third embodiment shown in FIG. 2(c) will be explained with reference to the processing flowchart shown in FIG. (1) "Subscriber A makes a call to subscriber B. (2)" In the calling station 11, the subscriber type determining means determines whether the calling subscriber A is a registered monitoring subscriber. (3) "If originating subscriber A is a monitoring subscriber, the originating station 11 seeks a detour route ■ without using the general route ■ normally used between subscriber A and subscriber B. (4 )”The originating station 11 returns to the monitoring station 1 according to the detour route
Detour to 3. (5)"Furthermore, the originating station 11 transmits the subscriber number of subscriber B and a "monitoring request" signal to the monitoring station 13, similarly to the process flow (7) of the first embodiment described above. (6) Upon receiving the “monitoring request” signal, the monitoring station 13 determines the route of subscriber B, and issues an incoming call request to the determined route.
The subscriber A and subscriber B are monitored by transmitting the B subscriber number and a "monitoring request" signal. (7) “The destination station 12 that received the call request to subscriber B
Check whether the subscriber is a called subscriber. (8) If subscriber B is the terminating subscriber, the terminating station 12 uses the monitoring request determining means to determine whether there is a ``monitoring request.'' (9) If it is a "monitoring request," the destination station 12 interprets it as a connection request and allows the call to subscriber B. (10)" The monitoring station 13 monitors the content of the call between the registered subscriber A and the called subscriber B by the call content monitoring means. (Application example) A connection configuration diagram of an application example of the present invention is shown in FIG. 6. shows a case where a detour route is provided for each service. In the figure, 21 is a departure station, 22 is a destination station, 23 is a monitoring station C, 24 is a monitoring station D, 25 is a monitoring station E, 26 is a general route, 27
, 28 and 29 indicate the respective detour routes. Subscriber A
When connecting from the originating station 21 to subscriber B at the destination station 22 via the general route 26, subscriber B has registered to receive different services C, D, and E, such as eavesdropping service, criminal identification service, special service, etc. In this case, detour routes 27, 28, and 29 are provided for each service, and monitoring station C
, D, and E, it is possible to receive a variety of services by establishing centers for each service. or subscriber A
It is also possible to receive a specific malicious call service by stopping at the monitoring station on a detour route without making a call between the subscriber and registered subscriber B.

0012

[Effects of the Invention] Conventionally, malicious call monitoring means was provided at the home of a receiving subscriber who is a subscriber registered for monitoring or at a receiving station, but in the present invention, by concentrating it on a specific monitoring station by a detour route, the number of monitoring devices can be reduced. Especially if the monitoring equipment becomes large-scale in the future, this method in which calls are established via the monitoring station will be very effective in cases where the purpose is to monitor malicious calls.

[Brief explanation of the drawing]

[Figure 1] Principle configuration diagram of the present invention

[Figure 2] Connection configuration diagram of the embodiment

[Figure 3] Processing flowchart of Example 1

[Figure 4]
Processing flowchart of Example 2

[Figure 5] Example 3
Processing flowchart

[Figure 6] Connection configuration diagram of application example

[Explanation of symbols]

1, 11, 21 Originating station 2, 12, 22 Terminating station 3, 13, 23, 24, 25 Monitoring station 4 14, Relay station 5 Subscriber type determination means (destination side) 6 Incoming line type determination means 7, 17 Detour route registration table 8 Call content monitoring means 9 Monitoring request determination means 10 Subscriber type determination means (originating station) 15 Originating subscriber 16 Terminating subscriber 26 General route 27, 28, 29 Detour route

Claims (3)

[Claims] [Claim 1] In a connection system for searching for malicious calls from criminals, etc. in a telephone network, subscriber A of the originating station (1) is the calling subscriber, and subscriber B of the destination station (2) is registered for monitoring in advance. If subscriber B is a monitoring subscriber who has received an incoming call request at the receiving station (2), subscriber type determination means (5) determines whether subscriber B is a monitoring subscriber. In the case of , the incoming line type determination means (6) determines whether the incoming line is a general route or a monitoring route, and the route to be detoured when the subscriber type of the originating station (1) and the destination station (2) is a monitoring subscriber. It has a detour route registration table (7) in which the detour route is registered in advance, and a call content monitoring means (8) for monitoring the call content to be monitored by the monitoring station (3) of the detour route (3) with a monitoring device, An incoming call from subscriber A to subscriber B is forcibly diverted from the general route ■ normally used between subscribers A and B to the detour route ■ and sent to subscriber B via the monitoring station (3). Receive a call and send it to the monitoring station (
3) A supervisory call diversion control method characterized by intensively monitoring call content. [Claim 2] When called subscriber B is a monitoring subscriber, the type of incoming line is not determined at called station (2), but at called station (2).
2. The supervisory call diversion control system according to claim 1, wherein the supervisory request determination means (9) provided at the supervisory station determines whether or not there is a "monitoring request" from the supervisory station (3). [Claim 3] When registering calling subscriber A as a monitoring subscriber, the calling station (1) is provided with subscriber type determination means (10) to determine whether calling subscriber A is a registered monitoring subscriber. 2. The supervisory call diversion control system according to claim 1, further comprising the step of making a determination.