KR100506204B1 - Forced Auto Response Switching Method in 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 forced automatic response switching method in a private exchange system.

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

It is to provide a forced automatic answer switching method for forcing the corresponding station to respond to a call to which the other station is switched when the call is switched to another station in the private exchange system.

All. Summary of Solution of the Invention

Forced auto-answer in a private exchange system having a first station that attempts to make a call to a predetermined number, a second station that corresponds to the number that the first station attempts to make a call, and a third station that is switched by the second station. In the switching method, when the first station and the second station are in a call, the second station tries to switch to the third station, and if the third station is in a ring state, the second station is a forced auto answer signal. And generates a connection between the first and third extension lines.

la. Important uses of the invention

Used for call switching in the private exchange system.

Description

Forced Auto Response Switching Method in Private Exchange System

The present invention relates to a call switching method in a private exchange system, and more particularly, to a method for forcibly making an external station automatically answer when a call is switched.

In general, in the existing private exchange system, when a call path is formed by calling from any first extension to any second extension, the first extension makes a call with the second extension. However, if the second extension user is not the caller desired by the user of the first extension, the second extension user switches the call to any third extension to which the first extension user wants. In the method for switching to the third extension, first, when the second extension user inputs a switching key to switch to the third extension, the first extension becomes a hold state. When the second extension user dials the third extension, if the third extension is idle, the user hears the ring tone through the handset, and if the second extension is busy, the busy tone is heard. At this time, the operation state of the first station is changed according to the operation of the second station.

In the first operation, when the third station is in the idle state and the second station is hooked on immediately after switching, the first station releases the standby state and forms a call path with the third station to initiate a call. 3 If the station is busy, it will be Camp-On.

Secondly, if the second extension user keeps hooking off after switching, the first extension is in a standby state and a ring is generated from the second extension to the third extension. Or a busy tone is generated when the third extension station is busy. When the third extension hooks off in this state, the call between the second extension and the third extension is made, and the call between the first extension and the third extension that is held only when the second extension is hooked on is made.

As described above, the user of the second extension must wait until the third extension is hooked off to switch the call paths of the first extension and the second extension to the call paths of the first extension and the third extension. Even if the second extension is hooked on (camp on), if the third extension does not respond, the second extension is recalled to the second extension, which causes trouble for the second extension user.

Accordingly, an object of the present invention is to provide a forced auto-answer switching method in a private exchange system in which an extension user who wants to switch a call forcibly automatically responds to a call switching target station.

In order to achieve the object of the present invention, the present invention provides a first extension that attempts to dial a predetermined number, a second extension that corresponds to a number that the first extension attempts to dial, and a second switch that is switched by the second extension. In a forced automatic answer switching method in a private exchange system having three stations, the second station attempts to transfer the call to the third station when the first station and the second station are in a call, and the third station is ringed. In the state, the second station generates a forced auto answer signal, thereby connecting the first and third stations with a call path.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different 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 is a block diagram of a private switch system to which the present invention is applied.

Referring to FIG. 1, the central processing unit 10 processes a predetermined set of programs to control call switches and to control various services and operations according to the present invention. The memory 20 includes a program and a volatile data processing area. The memory 20 includes a plurality of buffers, and is used as a work memory of the CPU 10, and controls to perform calls and various functions. It consists of a ROM which stores program and initial service data. The switching unit 30 switches various tone and voice data, connections between stations, connections of trunk lines, etc. under the control of the CPU 10. The subscriber subscriber unit 80 performs the interface between the subscriber's general telephones 81, 83, ..., 85 and the devices connected by a plurality of extensions. In the following description, the subscriber extension telephone 81 is referred to as a first extension 81, the subscriber extension telephone 83 as a second extension 83, and the subscriber extension telephone 85 is referred to as a third extension 85. The trunk line connecting unit 90 is connected to an external trunk line to implement a currency in the exchange period with the external trunk line. The key phone subscriber connection unit 100 interfaces between a plurality of key phone telephones and the device. At this time, the key phone includes a predetermined display unit so that the subscriber can know the overall operating state of the system and the input telephone number. The tone generator 40 is controlled by the central processing unit 100, and scissor trunk lines to form trunk lines loops. In addition, an incoming signal received through the trunk line is interfaced. The ring generator 50 outputs a ring signal of a square wave form to the general subscriber connection unit 80. The DTMF generating unit 60 analyzes the DTMF signal generated from the subscriber of the general subscriber access unit 80. On the other hand, the DTMF transmitter 70 outputs the DTMF signal to the switching unit 30 under the control of the central processing unit 10.

2 is a flowchart illustrating a forced automatic response switching method in a private exchange according to an embodiment of the present invention.

Hereinafter, referring to FIGS. 1 and 2, the dialed extension is switched between the first extension 81 and the extension dialed from the first extension 81 at the second extension 83 and the second extension 83. The extension station will be described in detail as a method for making a forced automatic response in the private exchange by considering the extension as the third extension 85.

First, when the DTMF signal is generated from the first extension 81 to the second extension 83 and the call is attempted, the central processing unit 10 performs the first extension 81 at the DTMF generator 60 in step 201. Detects the DTMF signal generated from the control unit, and controls the switching unit 30 to switch to the second extension 83 which is the corresponding extension to form a call path, and when the second extension 83 hooks off, the call is started. . When the call is initiated, the CPU 10 checks whether a switching signal is input from the second extension 83 in step 203. At this time, if the subscriber of the second extension 83 is not the person who the subscriber of the first extension 81 wants, the user of the second extension 83 is a third person who can receive a call from the subscriber of the first extension 81. When the call switching key for call switching to the extension 85 is inputted, the call switching signal corresponding to the call switching key is output from the second extension 83 to the CPU 10. The CPU 10 holds the first extension 81 by controlling the switching unit 30 by receiving the call transfer signal in step 205. When the call switching signal is input and the first extension 81 is held, the CPU 10 checks whether the third extension 85 number is input from the second extension 83 in step 207. When the third extension 85 number is input in step 207, the central processing unit 10 proceeds to step 208 to control the switching unit 30 to connect the second extension 83 and the third extension 85. Form a currency path. When the second extension 83 and the third extension 85 are connected to form a call path, the CPU 10 proceeds to step 209 to determine whether the third extension 85 is busy. As a result of the determination, if the third extension 85 is busy, the forced automatic response switching process is terminated. However, if the third extension 85 is not busy, the central processing unit 10 controls the tone generator 40 to generate a ring tone in step 210 to give the ringback tone to the second extension 83. The ring tone signal is output to the extension 85. When the ring tone occurs in step 210, the central processing unit 100 proceeds to step 211 to check whether the third internal hook is off. When the third extension 85 is hooked off, the central processing unit 10 proceeds to step 213. Proceeds with the call of the second extension 83 and the third extension 85. When the call of the second extension 83 and the second extension 83 starts, the central processing unit 10 proceeds to step 215. It is checked whether the second extension 83 is hooked in. If the second extension 83 is not hooked on, the central processing unit 10 performs the second extension 83 and the third extension 85 in step 215. However, if the second extension 83 is hooked on, the central processing unit 10 proceeds to step 217 to make a call through the communication path between the first extension 81 and the third extension 85. Initiate.

On the other hand, if the third extension 85 is not hooked off in step 211, the CPU 10 proceeds to step 219 to check whether the forced auto-answer signal is input from the second extension 83. When the forced automatic response signal is input in step 219, the CPU 10 checks whether the second extension 83 is hooked on in step 221. However, if the forced automatic response signal is not input, the CPU 10 proceeds to step 227 to execute the general function and ends. If the second extension 83 is not hooked on, the central processing unit 10 returns to step 211 to check again if the third extension 85 is hooked off, and if the second extension 83 is on, step 233. The control unit 30 controls the switching unit 30 to connect the call paths of the first extension 81 and the third extension 85 to output a ring tone signal to the third extension 85. After transmitting the ringtone signal to the third extension 85 in step 223, the CPU 10 checks whether the third extension 85 is hooked off in step 225. At this time, when the third extension 85 is hook-hooked, the flow proceeds to step 217 to form a communication path between the first line and the third extension 85 to start a call. However, if no communication path is formed, the CPU 10 continues to transmit the ring tone signal to the third extension 85 in step 223.

As described above, the present invention saves the trouble of waiting for the second extension to respond by forcing the second extension to switch automatically by automatically answering the call of the first extension to the third extension. 3 There is an advantage that you can immediately know that the extension user is absent.

1 is a block diagram of a private switch system to which the present invention is applied.

2 is a flowchart illustrating a forced automatic response switching method in a private exchange to which the present invention is applied.

Claims (3)

Forced auto-answer in a private exchange system having a first station that attempts to make a call to a predetermined number, a second station that corresponds to the number that the first station attempts to make a call, and a third station that is switched by the second station. In the switching method, When the first extension and the second extension are in a call, the second extension attempts to switch to the third extension, and when the third extension is in a ring state, the second extension generates a forced auto answer signal. According to claim 1, characterized in that for connecting the communication path of the first extension and the third extension. Forced auto-answer in a private exchange system having a first station that attempts to make a call to a predetermined number, a second station that corresponds to the number that the first station attempts to make a call, and a third station that is switched by the second station. In the switching method, A first process of checking whether a switching signal is input when the first extension line and the second extension line are formed and a call is initiated; A second step of checking whether the switching signal is input and whether a number of a third extension is input from the second extension; A third process of attempting to switch to the third extension when the number of the third extension is input and checking whether the third extension is in a ring state; A fourth process of checking whether a forced auto answer signal is input from the second station when the third station is in a ring state; A fifth process of inputting the forced automatic answer signal in the ring state of the third extension and connecting the first and third extension lines to determine if a call route is formed when the second extension is hooked on; and, And a sixth process of initiating a call when the third extension is hooked off and forming a call in the check of the call route, and continuously transmitting a ring tone to the third extension if not formed. . The method of claim 2, A seventh process of forming a call path between the second extension and the third extension when the third extension is hooked off in the third step; Checking whether the second extension is hooked on, and if hooked on, hooking up the call paths of the first extension and the third extension to initiate a call.

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