KR100222738B1 - Method for limiting toll call in an electronic switching system - Google Patents

Abstract

According to the present invention, an extension subscriber suitable for providing a variety of CENTRIX extension subscriber services by using a code restriction method for CENTRAL OFFICE trunk outgoing call during operation of the Centrix function of an electronic switchgear. The present invention relates to a method for restricting other station numbers in an electronic exchange. In the conventional technology, when an extension subscriber is unanswered in an exchange equipped with a Centrix function, the CIS-exchange exchange does not provide automatic call transfer service to the guide. Although the service function is limited, there is a drawback of controlling the extension subscriber as a guide and not providing high quality service to the extension subscriber. However, the present invention can be used as a method of overcoming the limitations of the subscriber service provided by the national exchange. CO subscribers in the Ricks group extension Various code control methods can be implemented for each Centrix group by efficiently operating and managing the list of other station numbers available for outgoing call. In addition, by applying a code control table for each subscriber / class in any centric group, the above-mentioned drawbacks can be improved by classifying subscriber classes more finely and accommodating various user requirements.

Description

How to restrict other station number in electronic exchange

The present invention relates to a method of limiting other station numbers in an electronic switchgear, and more particularly, a method of restricting codes when a station subscriber uses a CENTRAL OFFICE (hereinafter, abbreviated to CO) trunk call during operation of the Centrix function of the DTS-1100A electronic switchgear. The present invention relates to a method for restricting a foreign country's number in an electronic exchange that provides a variety of Centrix extension subscriber services.

For example, the DTS-1100A exchange is a small-capacity exchange that is used for the city, local / tendem, and centrics of the public switched telephone network (PSTN), and ultimately the ISDN. It has been developed to develop into a flexible exchange in various network types such as intelligent network (IN).

In addition, the DTS-1100A switch system combines existing services such as voice, Centrix, ISDN (2B + D, 30B + D), and common line signaling (CCS NO.7) and services under commercialization into one system. All have been developed to play a major role in an acceptable total information network.

In the related art, when an extension subscriber is unanswered in a switch having a Centrix function, the function of serving at the information desk is limited due to the failure of the automatic call transfer service to the guide at the switch of the Centrix function. There is a flaw in controlling and providing quality service to the subscriber.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, the extension of the central subscriber to the CENTRAL OFFICE (hereinafter abbreviated as CO) during the operation of the Centrix function of the electronic switching center using a code restriction method for trunk outgoing call. The purpose of the present invention is to provide a variety of Rx extension subscriber services, and to provide a method for subdividing call restriction services according to classification by subscriber / group.

In order to achieve the above object, the present invention, the subscriber station according to the class and the local station code restriction operation unit that stores the information of the station subscriber, and each of the signal receiving equipment for detecting the digital information by processing the MFC signal digital signal Digit reception processing unit for scanning digits periodically to detect digits, call processing unit performing functions related to call processing, and outgoing route occupancy unit for controlling signals outgoing to large stations through relay lines The other station number limiting method in an electronic switch system comprising a relay line call control unit is configured to perform a long distance input when an input requesting registration / deletion for a long distance other station code of an arbitrary centric group is input through a digit receiving processing unit. The station code restriction operation detects the corresponding centric group data, and the corresponding service. If the Agency requires proper provides cent Riggs group management register the number of the subscriber with respect to the long-distance other station code cent Riggs group on table / delete other stations station limits around the electronic switch, characterized in that which consists of the steps of method.

1 is a block diagram of an all-electronic exchanger suitable for limiting other station numbers in accordance with the present invention;

2 is a flowchart illustrating the steps of registering / deleting a class 3 extension subscriber as a tollcall subscriber according to the present invention;

3 is a flowchart illustrating the steps of registering / deleting a CO trunk outgoing station number code of a class 3 extension subscriber in an electronic switch according to the present invention;

Figure 4 is a flow chart illustrating the steps of outgoing CO trunks of Class 3 extension subscribers at the electronic switchboard in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

100: input and output device 102: outside time code number limitation operation unit

106: digit reception processing unit 108: system operation / maintenance unit

110: call processing unit 112: foreign country number translation unit

114: subscriber call control unit 116: incoming subscriber occupation unit

118: outgoing route route occupant 120: relay line call control unit

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

First, referring to FIG. 1, a block diagram of an electronic switch is suitable for restricting other station numbers. The input / output device 100 is a device for controlling all inputs and outputs of a system, and provides a backup of changed data and a communication channel between an operator and the system. And a cartridge tape driver and a floppy disk driver, the operator is configured to be suitable for inputting and outputting information of the electronic switchboard.

Out-of-country number code restriction operation unit 102 performs subscriber management and other special services according to the grade, and for reference, an example of the subscriber grade used in the DTS-1100A electronic switchgear, the highest grade of Inter Call Class (hereinafter referred to as Class 1), which allows the selective use of international calls. In addition, Toll Call (hereinafter referred to as 2nd class), which allows the use of long distance phones selectively, Urban / Local Call (hereinafter referred to as 3rd class) only using local calls, use of some numbers of local calls, and work For example, each subscriber is divided into five classes, banning the use of 700 paid services (hereinafter referred to as class 4), and finally prohibiting outgoing reception (hereinafter referred to as class 5). .

Out-of-country number code restriction operation unit 102 is a block that stores the information of the station subscriber and performs subscriber management and other special services according to the class, and has higher reliability in general exchanges such as DTS-1100A than ordinary private exchanges. It is possible to receive effective service of the call history.

The digit receiving processor 106 detects a digit by periodically scanning each channel of a signal receiving device that detects digit information by digitally processing a multi-frequency code signaling system (MFC) signal. In the case of the dial pulse, the digit is detected by periodically scanning the subscriber line and counting the number of breaks of the dial pulse.

The digit receiving processor 106 analyzes the received digits to obtain information such as the type of call and the expected total number of digits, and further analyzes the remaining digits to obtain a called subscriber.

The system operation / maintenance unit 108 is responsible for system maintenance, maintenance, network management, billing, statistics, test, and database management.

The call processing unit 110 performs various functions related to call processing, and includes various blocks such as a subscriber call control unit 114, an incoming subscriber occupancy unit 116, an outgoing route occupancy unit 118, and a relay line call control unit 120. It contains them.

The long-distance foreign country number translation unit 112 receives the number received by the digit receiving processor 106 and determines the grade of the terminal that has sent the outgoing signal. The other station number is inquired by the local station code restriction operation unit 102, and the received message is transmitted to the subscriber call control unit 114.

The subscriber call control unit 114 connects the called subscriber terminal with the incoming call line based on the digit information on the signal received from the calling subscriber, and sends an intermittent call signal to the called telephone. A relay route occupancy unit 118 receives the signal from 116 and connects the relay line call, and detects, occupies and assigns an empty relay line to the subscriber.

The relay line call control unit 120 functions to control a signal from the outgoing route occupancy unit 118 to the power station through the relay line.

Referring to FIG. 2, the steps in the electronic switching system for registering / deleting a Class 3 extension subscriber as a participant to which the toll is partly available are described. An input for requesting registration / deletion is input to the call processing unit 110 through the digit reception processing unit 106 (step 210).

The call processing unit 110 receives the input requesting the registration / deletion of the long distance foreign country code of the CENTRICS group, translates the input digits from the long distance foreign country number translation unit 112, and controls the long distance other country code. 102 causes the search for corresponding centric group data (step 220).

As a result of the search in step 220, the number of the subscriber who requested the service exists, and if the request command is valid, the subscriber's number is registered / deleted in the Centrix group management table in the Centrix group management table and the execution is terminated. (Step 230).

Referring to FIG. 3, the steps of registering / deleting a CO outgoing station number code of a Class 3 extension subscriber in an electronic switchgear, requesting registration / deletion for a CO outgoing station number code of an arbitrary Centrix group. The command is input through the digit reception processing unit 106 (step 310).

The call processing unit 110 causes the long distance other station code restriction operation unit 102 to search the corresponding CO outgoing other station code table (step 320).

In step 320, the corresponding Centrix group CO outgoing station number code table is searched (102), and the number of the subscriber who requested the service is present in the other country station code table, and if the request instruction is valid, the extension in the CO outgoing station number code table The subscriber's number is registered / deleted and execution ends (step 330).

Referring to FIG. 4, the step of CO outgoing a third-class extension subscriber in an electronic switchgear is performed by the digit reception receiver 106 for a call requested by a third-party extension subscriber of an arbitrary centric group. Receive from

The call processing unit 110 receives the outgoing service request of the third-class extension subscriber from the digit reception unit (1) and requests a number translation to the inter-regional number code translation unit 112 in the call processing unit 110 (step 410).

Upon receiving the request for translating the interstate station number, the interstate station number translation unit 112 receives the digit, translates the number, and determines whether it is a CO trunk outgoing request (step 420).

If the call processing unit 110 searches the other station code code table and does not request CO trunk outgoing request, the call processing unit 110 notifies the extension subscriber who has requested the service to stop service and terminates the call (step 430).

As a result of translating the foreign station code table, the call processing unit 110 performs the normal outgoing occupancy request and call request function when the extension subscriber requesting the service is a CO trunk outgoing request allowed by the Centrix group. Connect with an external exchange via the step (440).

As described above, the present invention can be used as a method of overcoming the limitations of the subscriber service provided by the national exchange by using the electronic switchboard, and the station subscribers of the Centrix group can be used in the case of CO trunk outgoing calls. By efficiently managing and managing lists, various code control methods can be implemented for each group of centrics. In addition, by applying the code control table for each subscriber / class in any centric group, it will be helpful to categorize the subscriber class in more detail to accommodate various user requirements.

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

Claims (3)

Scanning each channel of the inter-country station code restriction operation unit 102, which stores subscriber management and extension subscriber information according to the class, and the signal reception equipment that detects digit information by processing MFC signals digitally ( Digit receiving processing unit 106 for scanning and detecting digits, call processing unit 110 for performing a function related to call processing, and outgoing route occupancy unit 118 for a signal going out to a large power station through a relay line. The station number limiting method of another station in the electronic switchboard, characterized in that the relay line control unit 120 is controlled, When an input requesting registration / deletion for a long distance other station code of an arbitrary centric group is input through the digit receiving processor 106, the long distance other station code restriction operation unit 102 searches for the centric group data. step; And registering / deleting the subscriber's number in the Centrix Group's long-distance other country code in the Centrix group management table if the request for the service is valid. Scanning each channel of the inter-country station code restriction operation unit 102, which stores subscriber management and extension subscriber information according to the class, and the signal reception equipment that detects digit information by processing MFC signals digitally ( Digit receiving processing unit 106 for scanning and detecting digits, call processing unit 110 for performing a function related to call processing, and outgoing route occupancy unit 118 for a signal going out to a large power station through a relay line. The station number limiting method of another station in the electronic switchboard, characterized in that the relay line control unit 120 is controlled, If a command for requesting registration / deletion is input to a CO originating station number code of any Centrix group, searching for a corresponding CO originating station number code table; In the electronic switchboard, the number of the subscriber requesting service exists in the corresponding station code table of the other station, and if the request command is valid, the subscriber station number is registered / deleted in the CO outgoing station code table. How to limit other station number. Scanning each channel of the inter-country station code restriction operation unit 102, which stores subscriber management and extension subscriber information according to the class, and the signal reception equipment that detects digit information by processing MFC signals digitally ( Digit receiving processing unit 106 for scanning and detecting digits, call processing unit 110 for performing a function related to call processing, and outgoing route occupancy unit 118 for a signal going out to a large power station through a relay line. The station number limiting method of another station in the electronic switchboard, characterized in that the relay line control unit 120 is controlled, The call processing unit 110 receives the outgoing service request of the third-class extension subscriber from the digit reception processor (), receives the number translation request from the inter-regional number code translation unit 112 in the call processing unit 110, translates the number, and transmits the CO trunk. A judging step of judging whether an outgoing call request is made; If it is determined in the determination step that the request is not a CO trunk outgoing call, notifying the extension subscriber requesting the service that the service is not available and prohibiting the call from proceeding; If the CO trunk outgoing request is determined in the judgment step, the normal station occupancy request and the call request function perform a step of connecting to an external exchange through the CO trunk, wherein the other station number limiting method in the electronic switchgear .

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