KR100547800B1 - How to change the number of digits in the private exchange system - Google Patents

Abstract

end. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a private switching system, and more particularly to a telephone number digit.

I. The technical problem that the invention is trying to solve

An object of the present invention is to provide a method for the control unit of the private exchange system to change the number of the telephone number when receiving the key input data of the user.

All. Summary of the Solution of the Invention

Designate or delete all stored data including initial station, trunk line, station group, and station group port data stored in RAM as initial value, and change the number of digits converted by preset rule to the phone number area of each port in the RAM. Enter your phone number.

la. Important uses of the invention

The user can change the number of digits in the private exchange system by entering the corresponding key.

Description

How to change the number of digits in a private exchange system

The present invention relates to a private switching system, and more particularly to a telephone number digit.

In general, an extension subscriber circuit provided in a private exchange has a plurality of ports. The multiple ports of the extension subscriber circuit (hereinafter referred to as "extension ports") are each connected with a plurality of extension telephones. In addition, each extension port has a corresponding telephone number. And the trunk line circuit provided in the private exchange has a plurality of ports. A plurality of ports of the trunk line circuit (hereinafter referred to as "trunk line ports") are each connected to a local exchange. In addition, each CO line has a corresponding telephone number. The private exchange groups a portion of ports among the extension ports and assigns them to a group (hereinafter referred to as an "extension group"), and provides a group service when a call arrives at a phone number representing the ports. In addition, the private exchange grouping some of the ports of the trunk line port to designate a group (hereinafter referred to as the "trunk line group"), and provides a group service to the phone number representing the some of the ports. As described above, the private exchange stores a telephone number corresponding to each extension port and trunk line port. The private exchange also stores the representative number of each station group and CO line group.

However, the telephone number and each representative number corresponding to each port stored in the conventional private exchange were fixed to three digits. For example, 300 lines can be designated using 2xx, 3xx, and 5xx numbers in the area of the telephone number corresponding to the extension port. In addition, 100 lines can be designated by using 8xx numbers in the telephone number area corresponding to the trunk line port. And 100 lines can be used by using 4xx number in the representative number area of extension group. In addition, 100 lines can be used by using 9xx numbers in the representative number area of the CO line group. If the line capacity of the private switching system in operation is small, a problem does not occur even if the user uses a three-digit telephone number. However, when the private switching system operated has a large line capacity, it is inconvenient for the user to use a three-digit telephone number. That is, when allocating an extension number to an extension subscriber phone, only 100 2xx number fields were used, and thus the phone number could not be uniformly assigned.

In the case where the line capacity of the private switching system exceeds the port that can be designated by a three-digit telephone number, or for the uniform telephone number assignment, a hardware dependent telephone is conventionally used by using a dip switch provided in an extension subscriber card. A method of changing the number of digits in the number was used.

However, the method of using the dip switch is inconvenient because it must deal directly with the extension card and the CO line card.

Accordingly, an object of the present invention is to provide a method in which a control unit of a private exchange system changes the number of digits of a telephone number when receiving key input data of a user.

In order to achieve the above object, the present invention provides a method for changing the number of digits in a private exchange, comprising: a first process of checking whether key input data of a user changes the number of digits in the telephone; If not, if the second process for performing the function, and the case of changing the number of digits of the telephone number, all the stored data, including the data stored for each station, trunk line, station group and trunk line group port in the RAM of the private exchange. It is characterized by consisting of a third step of specifying or deleting the initial value and the fourth step of inputting the phone number of the digits converted by the predetermined rule to the phone number area of each port in the RAM.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 shows a structure 100 of a private exchange in accordance with the present invention.

The switching circuit 114 switches various tones and voice data under the control of the controller 111. The internal subscriber circuit 115 supplies a call current to a telephone (not shown) under the control of the control unit 111 and simultaneously interfaces a signal between the telephone and the switching circuit 114. The subscriber extension circuit 115 also has a plurality of extension ports, which are connected to the telephones of the subscribers. The ring generator 116 generates a corresponding ring signal according to the type of call generated under the control of the controller 111 and supplies it to the subscriber subscriber circuit 115. The trunk line circuit 117 forms a trunk line call loop under the control of the controller 111 to form a trunk line call loop, and interfaces a signal between the trunk line and the switching circuit 114. In addition, the trunk line circuit 117 is provided with a plurality of trunk line ports and interfaces a signal between a local exchange (not shown) and the switching circuit 114. The tone generator 118 generates various tone signals under the control of the controller 111 and outputs them to the switching circuit 114. The dual tone multi-frequency receiver (DTMF) receiver 119 analyzes the DTMF signal input from the switching circuit 114, converts the DTMF signal into digital data, and outputs the digital data to the controller 111. At this time, the DTMF signal output from the switching circuit 114 becomes a telephone number where a trunk line subscriber or an extension subscriber is generated. The DTMF generator 120 converts the digital data output from the control unit 111 into a DTMF signal and outputs the DTMF signal to the switching circuit 114. At this time, the DTMF signal output from the DTMF generator 120 becomes the telephone number of the trunk line subscriber generated when the trunk line is called from the extension side. The control unit 111 controls the overall switching of the private switching system to control the call switching and provide various services to the subscriber. The ROM 112 stores basic call processing, various functions, and a program and initial service data of the control unit 111 for performing the operation of the present invention. The RAM 113 temporarily stores data generated during program execution under the control of the controller 111. In particular, the RAM 113 stores various data stored for each extension port, trunk line port, extension group, and trunk line group according to the present invention. Data stored for each extension port includes a telephone number, a subscriber name, group information, a service grade, call forwarding and receiving data, billing data, and extension reservation data. The data stored for each trunk line port includes a telephone number, a trunk line service grade, and signaling method information data. Data stored for each extension group may include time data and next port data. When a call is received by a representative number of a certain station group, the control unit 111 calls one of the group members held by a predetermined order for a predetermined time, and the time data is used to calculate the time. The data used for In addition, according to the predetermined order, the control unit 111 then calls the number of the group member, the next port data stores the port number. The data stored for each CO line group is data according to a method of designating a number of a group member in the CO line group when an extension subscriber calls outside through a CO line group.

2 is a flowchart illustrating a method of changing the number of digits of a telephone number by a controller of a private exchange according to an embodiment of the present invention. A description with reference to FIG. 1 is as follows.

In step 210, the controller 111 checks whether the user's key input data is a key input for changing the number of digits of the telephone number. If the key input data does not change the number of digits of the telephone number, the controller 111 performs the control operation of step 260 to stop the operation. If the key input data is to change the number of digits of the telephone number, in step 220, the controller 111 checks whether the key input data of the user is normally input. If the key input data is not a normal input, the controller 111 performs a control operation of step 260 to stop the operation. If the key input data is a normal input, the controller 111 determines whether the user inputs a confirmation key in step 230. If the user does not input the confirmation key, the control unit 111 performs the control operation of step 260 to stop the operation. When the user inputs the confirmation key, in step 240, the controller 111 assigns or deletes all stored data as initial values, including data for each extension, trunk line, extension group, and trunk line group port stored in the RAM 113. . In step 250, the control unit 111 inputs a phone number of digits converted by a preset rule into a phone number area of each port in the RAM. For example, according to the preset rule, the three digit extension numbers 201 and 202 may be the four digit extension numbers 2001 and 2002, respectively.

1 and 2, if the key input data of the user changes the number of digits of the telephone number from three digits to four digits, the control unit 111 stores each of the extension, trunk line, extension group, and trunk line group stored in the RAM 113. In addition to the three-digit telephone number corresponding to the port of the station, CO line, station group and CO line group data specified by the initial value or deleted. This is because some of the data stored for each port stores the three-digit telephone number before the telephone number is changed. Private exchanges offer various kinds of functionality. For example, if the extension subscriber sets the call forwarding function to his or her phone and inputs a predetermined three digit phone number before the number of the phone number is changed, the address subscriber of the extension subscriber port stored in the RAM 113 may be selected. The call transfer destination data area is replaced with the data value of the three-digit telephone number. Therefore, when changing the number of the telephone number from three to four digits, the control unit 111 should change not only the telephone number for each port, but also other data according to various kinds of functions of the private exchange to the four digit telephone number.

As described above, the present invention allows the user to change the number of digits of the private exchange system by inputting a corresponding key, which does not require direct handling of the extension subscriber card and the trunk line card.

1 is a block diagram of a private exchange in accordance with the present invention;

2 is a flowchart illustrating a method of changing a telephone number digit by a control unit of a private exchange according to an embodiment of the present invention.

Claims (1)

In the method of changing the number of digits in the private exchange, A first step of checking whether the key input data of the user is input for changing the number of digits of the telephone number; A second process of designating or deleting all stored data as initial values, including data stored for each station, trunk line, extension group, and trunk line group port, in the RAM of the private exchange when the input is for changing the number of digits of the telephone number; , And a third step of inputting a phone number of digits converted by a predetermined rule into a phone number area of each port in the RAM.