KR100469742B1 - How to set a dedicated CO line using the DIADI function in a private exchange system - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to a method for setting a dedicated CO line using a DIADIA function in a private exchange system.

I. The technical problem to be solved by the invention

The purpose of the present invention is to provide a method for setting a dedicated CO line using a DIADIA function in a private exchange system.

All. Summary of Solution of the Invention

In the private switching system, if one extension is set as a design extension and the extension number is dialed directly, the call is held through the design extension, and a dial tone for dialing is sent to the caller. Form a currency path.

la. Important uses of the invention

In the private exchange system, the Diady function makes it easy to use a dedicated CO line.

Description

How to set up a dedicated CO line using the DIADI function in a private exchange system

The present invention relates to a method for setting a dedicated trunk line in a private exchange system, and more particularly, to a method for setting a dedicated trunk line in a design using a media function.

In the private exchange system, the Direct Inward Dialing (DID) function is a function that allows a CO line subscriber to dial a telephone number directly to a subscriber corresponding to an extension number directly from a CO line without passing through a relay station. Say. In the private exchange system, Direct Inward System Access (DISA) function is an external system use function, which uses a function provided by the system by inputting a specific DISA number from the outside of the system.

In the conventional private switching system, the DID function and the DISA function operate as separate functions. That is, if the designated exchange number is provided, the local exchange that provides the DID function connects the DTMF path to the DTMF receiver inside the private exchange so that the private exchange recognizes the next input number. It recognizes incoming number from the trunk line and informs the central processing unit, and the central processing unit notifies the incoming call by giving ring signal to the designated station. In addition, the DISA function is a function provided by a private exchange. When you want to make a long-distance or overseas call from outside, you can add a telephone fee to the system where the private exchange is installed and make a call to the outside. to be. In case of using the DISA function in the conventional private exchange system, when the trunk line in the private exchange used by the user is set to the DISA state, all calls received by the trunk line receive the preset user's extension number and password. Allow to catch CO line and allow dialing. Then, the caller can make a call by inputting an external telephone number to call. In this case, however, the user making an external call must know the extension and password that he or she uses to use the DISA function. Therefore, if the extension subscriber does not know his or her extension number or knows the extension number, the DISA cannot be used externally. In addition, it is necessary to know the CO line number system in the private exchange system to be used to catch a CO line in the system and to dial an external telephone number to be called. At this time, when the CO line number inputted for the call is busy, there is a need to repeat the above operation.

Accordingly, an object of the present invention is to provide a method of performing a DISA function by setting one DISA extension without having to process a DISA function to be used by a user by having a DID function in a private exchange system.

Another object of the present invention is to provide a method of performing a DISA function without inputting an extension number and password used by the private exchange system.

Still another object of the present invention is to provide a method of not performing repetitive dialing since only an extension number set to DISA in a private exchange system is busy, by holding an empty trunk line inside the system.

In order to achieve the above object, the present invention sets a single DISA extension in a private exchange system having a DID function, and when the extension number set as the DISA is inputted, an external telephone number is input from an external caller by grabbing a blank trunk line. It characterized in that to form. In addition, the present invention in the private exchange system having a DID function, if the extension providing the DISA function is not busy, and the external CO line number inputted by the caller is busy, the empty CO line is stored until the external CO line number is stored and connected. Dialing the stored CO line number to form a call path.

Hereinafter, a detailed description according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the embodiments of the present invention described below, detailed descriptions thereof will be omitted when there are conventional known functions and methods in connection with the present invention. In addition, the terms described in the embodiments of the present invention described below may vary according to the situation or intention of the practitioner, and should be recognized based on the general contents of the present specification.

1 is a view showing a schematic configuration of a private switching system according to the present invention, the central processing unit 100, memory 110, switching circuit 120, trunk line circuit 130, subscriber circuit 140, ring generator 150, tone generator 160 and DTMF receiver 170 And DTMF generator 180, repeater 190, voice storage 191 and single frequency detector 200.

A schematic operation of the private exchange system according to the present invention will be described with reference to FIG. The central processing unit 100 processes a set program to control a call switch, and controls various services and operations according to the present invention. The memory 110 includes a control program and initial service data for performing calls and various functions. In addition, the memory 110 stores the telephone number of the calling party during the execution of the control program according to the present invention. The switching circuit 120 switches various tone and voice data, connections between stations, and connections of trunk lines under the control of the CPU 100. The trunk line circuit 130 is controlled by the central processing unit 100 and forms a trunk line loop by scouring the trunk line. The subscriber circuit 140 performs an interface between a plurality of subscriber telephones and the switching device under the control of the central processing unit 100. The ring generator 150 outputs a ring signal to the subscriber circuit 140. The tone generator 160 transmits a tone signal to a trunk line or an internal station when the trunk line is caesared. The DTMF receiver 170 analyzes a DTMF (Dual Tone Multi Frequency) signal input through the subscriber circuit 140 and the trunk line circuit, that is, a complex frequency signal, and transmits the result to the CPU 100. The DTMF generator 180 outputs a DTMF signal to the switching circuit 130 under the control of the CPU 100. The relay station 190 processes a voice message or a voice guide message input and output through the trunk line circuit 130 and the subscriber circuit 140, and stores the voice message and the voice guide message in the voice storage unit 191. In addition, in the relay station 190, the present invention is also implemented in that a device having a voice mailbox function is generally used in addition to the private exchange system. The single frequency detector 200 detects and analyzes a single frequency signal input through the subscriber circuit 140 and the trunk line circuit 130 and transmits the result to the CPU 100.

2 is a diagram illustrating a process for designating a DISA user group in a private exchange system according to an embodiment of the present invention.

A method of designating a DISA user group in a private exchange system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In operation 210, the CPU 100 enters the DISA setting mode, and in operation 220, the CPU 20 determines whether the DISA is in the extension mode. If the DISA is in the extension mode, in step 230, the user designates a DID extension number to be designated as the DISA. In operation 240, the user determines whether to designate a DISA user group. In the case of designating a DISA user group, the CPU 100 designates a trunk line group to be sent. Meanwhile, when the DISA is not in the extension mode, the CPU 100 sets the general DISA mode in step 260.

3 is a diagram illustrating a DISA dedicated trunk line operation process using a DID function set through the same process as shown in FIG. 2 in a private exchange system according to an embodiment of the present invention.

1 to 3, a DISA dedicated trunk line setting method using a DID function in a private switching system according to an embodiment of the present invention will be described. In step 310, the CPU 100 determines whether the call received by the DID is an extension set to DISA. If the call received by the DID is an extension set to DISA, the CPU 100 determines whether there is an empty trunk line among the designated user groups in the process as shown in FIG. If there is an empty trunk line among the designated user groups, the central processing unit 100 catches the empty trunk line through the trunk line circuit 130 and sends a dial tone generated by the tone generator 160 to the caller through the switching circuit 120 and the trunk line circuit 130. give. In step 340, the central processing unit 100 recognizes the telephone number input from the DID trunk line, transmits it to the caught trunk line, and stores the recognized telephone number in the memory 110. In step 350, the central processing unit 100 detects the tone signal coming through the trunk line circuit 130 with the single frequency detector 200 to determine whether the incoming call is busy. When the incoming call is busy, the central processing unit 100 disconnects the busy line through the CO line 130, catches a new CO line again, resends the phone number stored in the memory 110, and repeats step 350. Perform. On the other hand, when the incoming call is not busy, in step 370, the central processing unit 100 connects the mutual communication paths through the trunk line circuit 130.

As described above, in the present invention, when used in the DID extension mode in a private exchange system, an external caller may make a desired call immediately by inputting an external telephone number to be called. In addition, the present invention can use the DISA function only by knowing the extension number set in the DISA mode without inputting the extension number and password used by the private exchange system and catching the CO line for external transmission.

1 is a block diagram of a private exchange system according to the present invention;

2 is a diagram illustrating a process for designing a user group according to an embodiment of the present invention.

3 is a diagram illustrating a process for setting a dedicated CO line using a DIADI function according to an exemplary embodiment of the present invention.

Claims (5)

In a method for setting a DISA dedicated trunk line in a private switching system having a DID function, When a predetermined extension is set to the DISA extension and the extension number set to the DISA is input, an empty telephone line is taken to receive an external telephone number from an external caller and form a call path between the external caller and the inputted external telephone number. How to set a dedicated trunk line characterized in that. The method of claim 1, And setting a DISA user group when setting the DISA of the extension. The method of claim 2, When the DISA user group is designated, a method for setting a dedicated trunk line, wherein the trunk line group to be transmitted is designated. In a method for setting a DISA dedicated trunk line in a private switching system having a DID function, A first step of determining whether the incoming call with the DID is an extension set to DISA; A second step of determining whether an empty trunk line is selected among a designated user group when the call received by the DID is an extension set to DISA; A third process of holding the empty trunk line and sending a dial tone to a caller when there is an empty trunk line among the designated user groups; A fourth process of recognizing a telephone number input from the caller and transmitting the recognized telephone number through the captured trunk line; And a fifth process of forming a call path between the caller and the subscriber of the telephone number when the call received through the trunk line is not busy. The method of claim 4, wherein And storing the telephone number recognized in the fourth step, disconnecting and re-taking the trunk line when the incoming call is busy, and retransmitting the stored telephone number.

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