KR19980014156A - How to intercept foreign subscribers from other electronic exchanges - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for controlling a call to a called subscriber, The present invention provides a telephone exchange system in which a telephone exchange between subscribers connected to other stations is possible by installing a telephone exchange for a suburban exchange in an area composed of a plurality of telephone exchanges, A step in which the destination electronic switching center judges whether the called subscriber is a target of intercepting if the calling subscriber hooks off and a calling path is established between the calling subscriber and the called subscriber, The destination electronic exchanger connects the conference call function to the incoming call subscriber, The method comprising the steps of: transmitting a voice signal and call information about call content between a calling subscriber and a call center; releasing the conference call function when the called party's electronic switching center senses a hook-on state of the called subscriber and hook- When a specific subscriber designated as a target for intercepting is received by a subscriber in another area, the contents of the call between the called subscriber and an arbitrary subscriber can be audited at a control station installed in the subscriber side area.

Description

How to intercept foreign subscribers from other electronic exchanges

The present invention relates to a method of intercepting an inter-area subscriber in an electronic exchanger, and more particularly, to a method of intercepting an inter-area inter- The present invention relates to a method for intercepting a subscriber's inter-area inter-regional exchange from a local electronic exchange capable of intercepting the contents of a call between a calling subscriber in another area and a local control station connected to the subscriber.

The prior art will be described with reference to Fig. 1 attached hereto.

The A subscriber and the B subscriber are accommodated in the electronic switching center 2 installed in the telephone office 1. For example, when the A subscriber calls the B subscriber and the A subscriber and the B subscriber perform a telephone conversation, Data corresponding to the call information corresponding to the call initiation time, the incoming call number / the calling number / the call termination time / bill, etc. are detected by the electronic switching center 2 and are connected to the operator terminal 3 connected to the front electronic switching center 2, Or printed on a screen.

Therefore, in the telephone exchange system having the above configuration, the operator of the terminal 3 can check only the call information at the time of telephone conversation between the A subscriber and the B subscriber.

On the other hand, an information agency or a control station installed at a remote place in a former electronic exchange where a special criminal group and an unhealthy subscriber are connected is notified of a crime which may be caused from the specific subscriber (the person to be intercepted) accommodated in the former electronic exchange for the purpose of public interest The user is required to have an eavesdropping function capable of intercepting the contents of a call between the called subscriber and an arbitrary originating subscriber in order to prevent the crime that may be caused by the subscriber by acquiring the information on the information through the contents of the call in advance.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method and apparatus for receiving a specific subscriber (subject to be intercepted) The present invention aims at providing a method of intercepting a subscriber's inter-region in a local electronic exchanger which enables the user to intercept the contents of a call with a local originating subscriber.

According to an embodiment of the present invention for realizing the above-mentioned object, there is provided a telephone exchange system in which a telephone exchange between subscribers connected to other stations is possible by installing a telephone exchange for a local exchange in an area comprising a plurality of electronic exchanges A step in which the calling subscriber calls a called subscriber connected to another station; and a step in which, when the called subscriber hooks-off and a call path is established between the calling subscriber and the called subscriber, When the called subscriber is determined to be an object to be intercepted, the called party's electronic switching center connects a conference call function and transmits a voice signal and call information of the call content between the called subscriber and the calling subscriber to the control center And the destination electronic switching center detects a hook-on state of the called subscriber, Get around the electronic exchange comprising the step of releasing the conference call function is provided with a tapping method of regional service subscribers.

Preferably, the voice signal transmitted from the called party side electronic exchanger is voice-processed at the control station and reproduced through the eavesdropping device or recorded through the recording device. The call information being stored in the storage means or outputted through the printer in the control center.

In addition, preferably, the called party side electronic switching center internally stores data on the intercepted object, and judges the intercepted object based on the data.

According to the present invention having the above-described constitution and the steps, when the control station executes a foreign call, the contents of a call between a called subscriber corresponding to a special criminal group and an abusive subscriber accommodated in an arbitrary former electronic exchanger, It becomes possible to prevent incidents that may arise from the target of interception.

1 is a schematic view for explaining an eavesdropping service in a conventional electronic exchanger,

FIG. 2 is a schematic view for explaining an eavesdropping service in a full electronic exchange in which the present invention is applied;

FIG. 3 is a flowchart for explaining a call connection procedure between other regions,

FIG. 4 is a flowchart illustrating a method for intercepting an inter-area subscriber in an entire electronic exchange according to an exemplary embodiment of the present invention.

Description of the Related Art [0002]

10: control station 1, 11: all electronic exchanger 1,

12: front electronic exchanger 2, 13: front electronic exchanger 3,

14: TOLL exchanger 1, 20: control station 2,

21: electronic exchanger 4, 22: electronic exchanger 5,

23: Electronic exchanger 6, 24: TOLL exchanger 2.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic diagram for explaining a method for intercepting a subscriber in a non-inter-regional area in an electronic switching center according to an embodiment of the present invention.

2, a control station 1 (10) is installed in a network 1 composed of a front electronic exchanger 1 (11), a front electronic exchanger 2 (12) and a front electronic exchanger 3 (13) 1, 2, 3 (11, 12, 13) through the voice line 25a and the information line 25b.

Also, the electronic exchanges 1, 2, 3 (11, 12, 13) are connected to the TOLL exchanger 1 (14) If a connected subscriber desires to make a long-distance call, a route is set so that the long-distance call can be made.

A control station 2 (20) is installed in the network 2 composed of the electronic exchanger 4 (21), the electronic exchanger 5 (22) and the electronic exchanger 6 (23) 21, 22, 23) through the voice line 25a and the information line 25b.

Also, the electronic exchanges 4, 5, and 6 (21, 22, and 23) are connected to the TOLL exchanger 2 (24) When a connected subscriber desires to make a long-distance call, a route is set so that the long-distance call can be made, and if a call is received according to a long-distance call from another TOLL exchange, Can be called.

Here, a plurality of subscribers are respectively connected to the former electronic exchanges 1, 2, 3, 4, 5, 6 (11, 12, 13, 21, 22, 23) And a data recording device such as a magnetic tape is installed in the control stations 1 and 2 (10 and 20), and the electronic exchanges 1, 2, 3, 4, 5 and 6 (11 and 12 , 13, 21, 22, and 23) and data according to call information.

Next, the operation of the present invention will be described in detail with reference to the attached flowcharts shown in Figs. 3 and 4. Fig.

First, a call connection process between other stations will be described in detail with reference to a flowchart shown in FIG.

When a C subscriber connected to the former electronic exchange 2 (12) wishes to talk with an arbitrary subscriber and hooks off the corresponding telephone to make a call (step 30), the former electronic exchange 2 (12) (Step 32), and determines whether the call for the incoming call is a local call (step 34).

As a result of the number translation, if the call for the incoming call number is a home call (YES in step 34), the former electronic exchange 2 (12) causes the subscriber corresponding to the incoming call number to be called. Accordingly, when the called subscriber responds to the call and becomes in the hook-off state, the call path between the C subscriber and any incoming subscriber in the home country is set so that the C subscriber and the called subscriber can perform a normal telephone conversation (Step 36).

However, if the C subscriber calls the D subscriber connected to the other station and the call for the incoming call number is determined as the other call in step 34 (NO in step 34), the former electronic exchange 2 (12) (Step 38). The TOLL exchanger 1 (14) provided for the C subscriber transmits the translated call number based on the digit signal input from the C subscriber (step 38).

The TOLL exchanger 1 (14) transmits the station number information data stored in the TOLL exchange 1 (14) based on the reception number transmitted from the former electronic exchange 2 (12) (Step 40). Then, the identified area, that is, the D subscriber who is the called subscriber, is connected to the area where the former electronic exchange is connected, for example, the TOLL exchange 2 (24) And then sets a path for the call from the C subscriber (step 42).

The TOLL exchange 2 (24) having received the reception number from the TOLL exchanger 1 (14), based on the station number information data stored therein, (Step 44), the former electronic exchanger 5 (22) judges whether or not the subscriber included in the incoming call number is included in the incoming electronic mail, The D subscriber is checked on the basis of the number of the attempted call, and then the D subscriber is called so that the calling party of the D subscriber can know the calling state (step 46). If the D subscriber hooks-off in response to a call, a call path is established on the same path so that the C subscriber and the D subscriber can perform a normal call.

Next, referring to the flowchart shown in FIG. 4, a method of providing a subscriber's intercepting service in a non-inter-subscribed area in the entire electronic exchange according to an exemplary embodiment of the present invention will be described in detail.

3, the call path between the C subscriber and the D subscriber is established and the D subscriber is received (step 50). Then, the former electronic exchanger 5 (22) (Step 52), the D subscriber responds to the call from the C subscriber and detects that the hooked-off state of the corresponding telephone is detected by the electronic switching center 5 (22) (YES in step 52) Based on the data to be intercepted stored in the exchange 4, the subscriber 4 judges whether the incoming D subscriber is a designated subscriber (step 54).

As a result of the determination, if the D subscriber is a general subscriber who is not designated as a target for intercept (NO in step 54), the former electronic switching center 5 (22) enables the C subscriber and the D subscriber to perform normal communication. Then, when the hook-on state of the D subscriber is detected (YES in step 58), the former electronic exchanger 5 (22) monitors the hooked-up state of the D subscriber (step 58) It is determined that the call between the D subscribers is completed and the mobile terminal returns to the initial state.

However, if it is detected in step 54 that the D subscriber is designated as an object to be intercepted (YES in step 54), the former electronic exchange 5 (22) At the same time as the CMX (Comference Mixer) function is connected (step 60), the C subscriber and the D subscriber perform a predetermined call exchange function to perform a normal call (step 62).

Here, the voice signal according to the contents of communication between the C subscriber and the D subscriber is transmitted to the control station 2 (20) through the voice line 25a by the CMX function connected in the step 60 (step 64) In the control station 2 (20), based on the control of the operator of the control station 2 (20), the audio signal is regenerated and outputted through the eavesdropping device or the audio signal is recorded in the recording device.

Then, data on call information, calling number / incoming call number / call start time / call termination time, etc. according to the communication between the C subscriber and the D subscriber is transmitted to the control station 2 (20) via the information line 25b (Step 66), the control station 2 (20) causes the corresponding call information data to be recorded on a storage means, for example, a magnetic tape or output through a printer, based on the control of the operator of the control station 2 (20).

Accordingly, the operator of the control station 2 (22) can perform the auditing function between the C subscribers and the D subscribers through the voice signal reproduced and output by the eavesdropping device, and the C subscribers It is possible to acquire call information according to the call between the D subscribers.

On the other hand, while performing steps 62-66, the former electronic exchanger 5 (22) monitors whether the D subscriber as the called subscriber is in the hook-on state (step 68). At this time, the D subscriber is in the middle of the call, (NO at step 68), the former electronic exchanger 5 (22) continues to perform the function of tapping the call between the C subscriber and the D subscriber at step 62. [

However, if the hook-on state of the D subscriber is detected in step 68 (YES in step 68), the former electronic exchange 5 (22) releases the CMX function connected in step 60, And returns to the initial state.

As described above, according to the eavesdropping service method of the subscriber in the other area in the former electronic switching center according to the embodiment of the present invention, when a specific subscriber designated as the eavesdropping object composed of the special crime group or the abusive subscriber is received by the subscriber in the other area The contents of the communication between the subject of the interception and the arbitrary originating subscriber are intercepted at a government public institution or a control station such as a police station installed in the receiving subscriber area to prevent the crime that may be caused by the special criminal group or the unauthorized subscriber.

Claims (4)

A telephone exchange system in which a telephone exchange between subscribers connected to other stations is possible by installing a telephone exchange for a telephone exchange in a region composed of a plurality of telephone exchanges, The calling subscriber calling the called subscriber connected to the other station; When the called subscriber hooks-off and a call path is established between the calling subscriber and the called subscriber, judging whether or not the called subscriber is to be intercepted, When the called subscriber is judged to be a target of intercepting, the called party's electronic switching center connects a conference call function and transmits a voice signal and call information of the call content between the called subscriber and the calling subscriber to the control center; Wherein the destination electronic switching center detects a hook-on state of the called subscriber and releases the conference call function when hooked on. The method as claimed in claim 1, further comprising the step of: the voice signal transmitted from the destination-side electronic exchanger is voice-processed at the control station and reproduced through an eavesdropping device or recorded through a recording device How to intercept subscribers' interception services in other regions. The method as claimed in claim 1, further comprising the step of storing the call information transmitted from the destination-side electronic switching center in a storage unit or outputting the call information through a printer. How to intercept the service. The method as claimed in claim 1, wherein the destination-side electronic switching center internally stores data on an object to be intercepted, and judges an object to be intercepted based on the data.