KR19990005359A - Advanced External Call Restriction Service Method of Private Exchange - Google Patents

Abstract

The present invention relates to an advanced external call restriction service method of a private exchange, and after registering the external call restriction service with a private exchange, translates a dial pulse signal for an external call among dial pulse signals corresponding to a called subscriber, and occupies a trunk. Therefore, since the next digit number for a specific region is translated, and the result is not the last digit of the external code restriction number, the digit number corresponding to the next external code restriction number, the area code of the specific region, is transmitted. Because the service is prohibited from the outgoing call processing from the calling subscriber to the called party corresponding to the external call restriction number, not only the call in a specific area can be restricted but also the call can be limited to the area corresponding to the station code of the specific area. There is an effect that the call can be restricted.

Description

Advanced External Call Restriction Service Method of Private Exchange

The present invention relates to a private eXchange, and more particularly, to an advanced outgoing call restriction service method of a private exchange that enables outgoing calls to specific station numbers.

In general, since the service for the external call restriction of the private exchange is fixed with a four-digit code, only the area code can be registered to restrict the external call.

In one embodiment according to the external call restriction, when Seoul is 2 and Suwon is an area code of 331, the area code 331 of Suwon is registered in the Barring Table in the private exchange to limit only calls sent to Suwon. Call Restriction This function restricts the subscriber to send only to the source through translation.

Conventionally, the external call restriction service method of the private exchange used a method of inputting an external call restriction code to the private exchange, which is a man machine communication in an input output processor (hereinafter referred to as IOP). External Call Restriction Service was registered by Subscriber Data Handling (hereinafter abbreviated as SDH) in the electronic switchboard using Communication (hereinafter abbreviated as MMC).

After registering the external call restriction service in SDH, the calling subscriber who owns the terminal dials the called party to access the call. After dialing the area code for the external call, the user dials the local area code and phone number. An external call connection will be attempted.

However, since the number of digits of the code for registering the external call restriction service is four digits, the external call restriction is limited only to the area corresponding to the area code, and there is a problem in that the external call restriction is not possible up to a specific station number corresponding to the area code.

The present invention has been made to solve such a problem, the object of the present invention is to provide a scalable external call restriction service by extending from a 4-digit code to an 8-digit code for external call restriction, and corresponds to a specific region as well as a specific region. It is to provide an advanced external call restriction service of a private exchange to limit the call to a specific station number.

The present invention for achieving this object relates to an advanced external call restriction service method of a private exchange, the step of registering the external call restriction service with a private exchange, and if the external call restriction service is registered, transmitted from the terminal of the calling subscriber Receiving a dial pulse signal corresponding to a called subscriber having a station number of a specific local area, detecting the dial pulse signal, translating the number of dial pulse signals for the external call, and the private exchange corresponds to the external call. Occupying the trunk, and translating a digit number for a specific region of dial pulse signals transmitted from the calling subscriber's terminal, and determining whether the number translation result is the last digit of the external call restriction number; Because it is not the last digit of the outer code restriction number in the step, the next outer code restriction number Receiving a local area number, translating the number and translating the number, and the result of the number translation are the last digit number corresponding to the local area number. The external call processing of the step is prohibited.

1 is a block diagram of an advanced external call restriction service method of a private exchange according to the present invention;

2 is a detailed flowchart of the present invention for an advanced external call restriction service method of a private exchange.

* Explanation of symbols for main parts of the drawings

10: LCS 20: PLS

30: TLS 40: SNS

Hereinafter, the objects and features of the present invention will be described in more detail with reference to the accompanying drawings so that the objects and features of the present invention can be more clearly understood.

1 is a block diagram of an advanced external call restriction service method of a private exchange according to the present invention, a line control subsystem (hereinafter referred to as LCS) 10, and a private line subsystem (Private). Line Subsystem (hereinafter abbreviated as PLS) 20, Trunk Line Subsystem (hereinafter abbreviated as TLS) 30, and Switching Number Translation Subsystem (hereinafter abbreviated as SLS) D) 40).

The terminal owned by the calling subscriber is a telephone of any subscriber, which is connected to the private exchange, and in particular, is connected to the LCS 20 in the line processor, which is a subprocessor, to the dialing key input of the terminal to dial the called subscriber. The analog pulse signal is applied and transmitted to the LCS 20 so that the call can be connected.

The LCS 10 is included in a line processor, detects a hook off / hook on signal, detects a hook off signal, and then converts the corresponding digit pulse signal into a main processor. It is a lower processor to transmit to the PLS 20 in the (Main Processor).

The main processor includes a PLS 20, a TLS 30, and an SNS 40, and performs relay call processing with a terminal connected to the LCS 10 in a line processor, and transmits various data transmitted from the terminal. It is an upper processor that performs maintenance functions for state management.

Among them, the PLS 20 is a private line subsystem block, which is connected to the LCS 10 belonging to the line processor to perform local call control, outgoing call control and incoming call control with the terminal, and generate charging information. And collect statistical data and transmit it to the TLS (30).

The TLS 30 includes a trunk call control, a trunk line data matching unit, a route controller, and a route data matching unit transmitted from a terminal. It performs local call control with telephone number, outgoing call control and incoming call control process according to advanced external call restriction.

Here, the local call control is a series of call control procedures in which a calling party using a terminal calls a called party of its own country. In this order, the call proceeds in the order of recovery.

And outgoing call control is a series of call control processes in which an outgoing subscriber using a terminal calls a called party of another station, and incoming call control is a series of calls in which a subscriber of another station calls a called party of its own station through its own incoming line. Call control process.

The SNS 40 is received from the PLS 20 to process the telephone number transmitted according to the relay call processing, and internally translates a number translation (NTR), a time division switch (Time Switch) and Telephony Device Control and Subscriber Data Handling (hereinafter abbreviated as SDH), and the station number of a specific area according to the advanced external call restriction service of the private exchange transmitted from the terminal. Send the phone number information for the NTR to translate.

The NTR in the SNS 40 is a number translation block, which analyzes telephone number information on a station number of a specific region according to an external call restriction transmitted from a terminal, and performs a function of identifying a use and a called location, and a device of a line or a relay line. From the number and dial digit information, the final destination is determined by the subscriber line or the trunk line by the extension number translation and the called number translation, and the function of confirming the purpose and destination of the extension number information is again checked. Notify the result.

In addition, the SDH in the SNS 40 is a subscriber data matching unit, which generates, changes, and cancels code information for an advanced external call restriction service transmitted from an input / output processor (hereinafter referred to as IOP), which is not shown. After receiving the input to perform the processing, the PLS 20 is notified of the result.

The advanced external call restriction service method of the private exchange according to the present invention configured as described above will be described in more detail with reference to the flowchart shown in FIG.

In a two-day embodiment, when the calling subscriber is Seoul, and the called subscriber is Suwon, the number for occupying the external call is 9 on the private exchange, and the phone number of the called subscriber for calling to a specific area is Suwon 331. For example, the specific station number in the Suwon area is described in the situation where a service code for call restriction can be input up to 8 digits, such as 1254.

It uses Man Marchine Communication (hereinafter abbreviated as MMC) connected to IOP to register advanced external call restriction service in private exchange, and advances to SDH in SNS 40 using software program. The specified external call restriction service.

When the advanced external call restriction service is registered in the SDH in the SNS 40, the calling subscriber hooks / offs the handset of the terminal, and then uses the terminal's dial key to control the area of the external call restriction through the LCS 10. In addition, it dials the called party with the station number of the specific area.

Enter dialing order 9, 0, 3, 3, 1, 1, 2, 5, 4, X, X, X, X.

The LCS 10 detects the dialing pulse signal to the called subscriber with the station number of the specific area and transmits it to the PLS 20 in the main processor.

The PLS 20 transmits a number translation request to the NTR in the SNS 40 to translate the station number according to the dialing pulse signal according to the external code 9 among the hook off signal and the dialing pulse signal transmitted from the terminal.

If the result of translating the outer code 9 of the dialing pulse signal from the NTR in the SNS 40 is the external call (202), and if the determination result is the external call, it transmits to the TLS 30 and responds to trunk occupancy and trunk occupation. To the PLS 20 again (204).

If the result of translating the station code of the specific area is not an external call, the internal call is processed and the call is blocked.

After occupying the trunk through the TLS 30, the PLS 10 receives the next digit number 0 according to the external call restriction from the terminal.

Since the digit number is input, the PLS 10 determines whether the external call restriction service is registered (206). If the external call restriction service is registered, the PLS 10 transmits the number translation request to the NTR in the SNS 40. (208) )

If the external call restriction service is not registered in the decision 206, the general external call is processed and the call is blocked.

It is determined that the result of translating the number 0 from the NTR in the SNS 40 is the last digit of the outer code restriction number (209). ) Is the order of receiving 205 digit numbers.

The next numbers 3, 3, 1, 1, 2, and 5 are sequentially translated, but since it is not the last digit number due to the outer code restriction, the loop is continuously rotated, and the last digit number 4 is received. Since the translated result is the last digit number, it is determined once again whether to limit the call. (211)

If the call is restricted at the decision step 211, external call processing from the calling subscriber in Seoul to the called subscriber of 0331-1254-XXXX is prohibited. (213)

In the determination step 211, the call is not limited, and general external call processing is performed.

In conclusion, after registering an advanced external call restriction service in a private exchange using the MMC, it is possible to restrict the call number corresponding to the station number of the specific region as well as the specific region according to the registered external call restriction service.

As described above, the present invention as described above registers a special code for the advanced external call restriction service, so that not only the call of a specific area can be limited but also the area corresponding to the station number of a specific area, This has the effect of limiting calls.

Claims (1)

In the external call restriction service method of the private exchange having a terminal and originating / receiving subscriber, registering the external call restriction service with the private exchange, if the external call restriction service is registered, from the terminal of the originating subscriber. Receiving a dial pulse signal corresponding to the called subscriber having a transmitted station number of a specific region, detecting the dial pulse signal, and translating the dial pulse signal for the external call by number; Occupying a trunk corresponding to a call, translating a digit number for a specific region among dial pulse signals transmitted from the calling subscriber's terminal, and determining whether the result of translating the number is the last digit of the external call restriction number Is not the last digit of the outer code restriction number in the determining step. Receiving a station number of a specific area that is a negative external call restriction number, translating the number, and since the number translation result is the last digit number corresponding to the station number of the specific area, the originating subscriber according to the external call restriction service A method for advanced external call restriction service of a private exchange comprising a step of prohibiting external call processing to a called subscriber corresponding to an external call restriction number.