KR19990056119A - How to request a call from a subscriber in a private exchange system - Google Patents

Abstract

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

Method of requesting a call to subscriber in call in private exchange system.

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

The present invention provides a method of determining a priority of a call by transmitting a call request signal to a terminal of a busy subscriber in a private exchange system.

All. Summary of the Solution of the Invention

In a private switching system, if a predetermined extension subscriber enters an extension number and wants to talk to another extension subscriber in a call, pressing a call request button sends a tone corresponding to the call request to a terminal of the extension subscriber in the call for a predetermined time; The LED indicating the call request attached to the terminal of the calling extension subscriber is turned on.

la. Important uses of the invention

In the private switching system, an LED indicating a call request tone and a call request is turned on from the private station to the calling station so that the subscriber of the station in the call can determine the priority of the call.

Description

How to request a call to a subscriber on call in a private exchange system

The present invention relates to a method for requesting a call in a private exchange system, and more particularly, to a method for requesting a call to an extension subscriber in a call.

In the conventional private exchange system, when a calling extension subscriber requests a call, if the calling extension subscriber applies for a call waiting function, the calling extension subscriber applies a signal requesting a call. The busy extension subscriber then ignores it or accepts the call in response to the call request. As described above, in the conventional private exchange system, when a call is requested to an extension subscriber in a call, the subscriber requesting the call can confirm if the call extension ends the current call and does not talk to the subscriber requesting the call. none. In addition, in the conventional private exchange system, even if there is an urgent call request to a busy extension subscriber, the busy extension subscriber does not know it and thus ignores the call request. In addition, even when an extension subscriber who is a secretary who performs a executive / secretary function in a conventional private exchange system calls an extension subscriber who is a secretary, if the assistant extension subscriber is busy, there is a problem of waiting for the call to end.

Accordingly, an object of the present invention is to provide a method for making a call request to an extension subscriber in a call in a private exchange system.

Another object of the present invention is to provide a method for transmitting a tone informing a call request to an extension subscriber in a call in a private exchange system.

It is still another object of the present invention to provide a method of turning on an LED to indicate a call request to a busy extension subscriber in a private exchange system.

It is still another object of the present invention to provide a method for requesting a call to an extension subscriber in a call in a private switching system to determine call priority.

In order to achieve the above object, the present invention, when a predetermined extension subscriber enters an extension number and wants to talk with another extension subscriber in a call, presses a call request button, the call is made to the terminal of the extension subscriber during the call for a predetermined time. It is characterized by transmitting a tone corresponding to the request. In addition, the present invention, when a predetermined extension subscriber enters an extension number in the private exchange system and wants to talk to another extension subscriber in a call, pressing a call request button, the extension subscriber in the call for a predetermined time to the terminal of the extension subscriber in the call. Characterized in that the LED indicating the call request attached to the terminal of the on.

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

2 is a diagram illustrating a process of requesting a call to an extension subscriber in a call in a private exchange system according to an embodiment of the present invention.

3 is a diagram illustrating a process of requesting a call to an extension subscriber in a call in a private exchange system according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, 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 switching system to which the present invention is applied, wherein the control unit 100, the memory 101, the trunk line connecting unit 102, the switching unit 103, the DTMF receiving unit 104, the DTMF transmitting unit 105, the subscriber connecting unit 106, the ring generating unit 107, and the tone generation It consists of a unit 108, an extension subscriber's telephones 111 to 11n, a control terminal 120 and a timer 130.

Referring to Figure 1 describes the overall operation of the private exchange system to which the present invention is applied. The control unit 100 performs the overall control operation of the private exchange system. The memory 101 stores a program for the control operation of the control unit 100 according to an embodiment of the present invention, and stores data generated under the control of the control unit 100. The trunk line connecting unit 102 transmits a signal transmitted from the exchanger connected through the trunk line to the switching unit 103 under the control of the control unit 100. The switching unit 103 switches the communication path under the control of the control unit 100. The DTMF receiving unit 104 is connected to the control unit 100 and the switching unit 103, converts the DTMF (Dual Tone Multi-Frequency) signal output from the switching unit 130 to digital data and outputs it to the control unit 100. When the DTMF transmitter 105 is connected to the controller 100 and the switching unit 103, the DTMF transmitter 105 outputs the DTMF signal from the controller 100 to the switching unit 103. The subscriber access unit 106 transmits the signal transmitted from the switching unit 110 to the connected telephones 111 to 11n and the signal transmitted from the connected telephones 111 to 11n to the switching unit 103 under the control of the control unit 100. The ring generating unit 107 generates a ring signal when a call request is made from a specific telephone of the trunk line connecting unit 102 or the subscriber connecting unit 106 under the control of the control unit 100, and transmits the ring signal to the telephones 111 to 11n connected through the subscriber connecting unit 106. The tone generating unit 108 generates various tone signals under the control of the control unit 100 and transmits the various tone signals to the switching unit 103. The telephones 111 to 11n are terminals of extension subscribers, and are provided with function buttons for call requests and LEDs for indicating call requests. In addition, the telephones 111 to 11n according to the embodiment of the present invention transmit a tone signal corresponding to the call request by the call request of the counterpart when the call is in progress. The control terminal 120 controls the private exchange system as a whole through the control unit 100. The timer 130 is a clock chip IC and generates current time data and outputs the same to the controller 100.

2 illustrates a process of requesting a call to an extension subscriber in a call in a private exchange system according to an embodiment of the present invention.

A method of requesting a call to an extension subscriber in a call in a private exchange system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In a specific embodiment of the present invention, when the extension subscriber 111 is in a call with a trunk line subscriber or another extension subscriber, another extension subscriber 112 calls for a call to the extension subscriber 111 in a call. In step 210, the control unit 100 receives a phone number of the extension subscriber 111 to call from the extension subscriber 112 through the subscriber access unit 106. In step 220, the control unit 100 determines whether the extension subscriber 111 corresponding to the extension number input in step 210 is in a call through the subscriber access unit 106. When the extension subscriber 111 of the input extension number is busy, the controller 100 determines whether a call request button is input from the extension subscriber 112 through the subscriber access unit 106 in step 230. When the call request button is input, in step 240, the control unit 100 controls the tone generator 108 to generate a tone signal corresponding to the call request, and according to the call request to the telephone of the extension subscriber 111 in the call through the subscriber access unit 106. The tone signal is transmitted. In step 250, the controller 100 determines whether a predetermined time has elapsed after transmitting the tone signal through the timer 130. If the predetermined time has not elapsed, the control unit 100 continuously transmits the tone signal in response to the call request to the telephone of the extension subscriber 111 in the call through the subscriber access unit 106. On the other hand, when the predetermined time has elapsed, in step 260, the controller 100 releases the tone signal to the telephone of the extension subscriber 111 in the call.

3 illustrates a process of notifying a call request to a telephone of an extension subscriber in a call in a private exchange system according to another embodiment of the present invention.

A method of requesting a call to an extension subscriber in a call in a private exchange system according to another embodiment of the present invention will be described with reference to FIGS. 1 and 3. In a specific embodiment of the present invention, when the extension subscriber 111 is in a call with a trunk line subscriber or another extension subscriber, another extension subscriber 112 calls for a call to the extension subscriber 111 in a call. In step 310, the control unit 100 receives the telephone number of the extension subscriber 111 to call from the extension subscriber 112 through the subscriber access unit 106. In step 320, the controller 100 determines whether the extension subscriber 111 corresponding to the extension number input in step 210 is in a call through the subscriber access unit 106. If the extension subscriber 111 of the input extension number is busy, the control unit 100 determines whether a call request button is input from the extension subscriber 112 through the subscriber access unit 106 in step 330. When the call request button is input, in step 340, the control unit 100 turns on the LED for notifying the call request to the telephone of the extension subscriber 111 in the call through the subscriber access unit 106. In step 350, the controller 100 determines whether a predetermined time has elapsed after turning on the LED through the timer 130. If the predetermined time has not elapsed, the controller 100 continuously turns on the LED for notifying the call request to the telephone of the extension subscriber 111 in the call through the subscriber access unit 106. On the other hand, when the predetermined time has elapsed, in step 360, the controller 100 turns off the LED corresponding to the call request to the telephone of the extension subscriber 111 in the call through the subscriber access unit 106.

As described above, the present invention has an advantage in that the private subscriber can quickly know the call request by transmitting a tone signal according to the call request to the extension subscriber in the private exchange system. In addition, the present invention can determine the priority of the call by turning on the LED corresponding to the subscriber making a call request to the extension subscriber in the call in the private exchange system. Therefore, in the present invention, in performing the executive / secretary function in the private exchange system, the call request can be confirmed from the executive even when the secretary is busy.

Claims (7)

Claims [1] A method of requesting a call to a subscriber in a call in a private switching system having an extension terminal having a call request button. When a predetermined telephone number is input, determining whether the extension subscriber of the input telephone number is busy; A second step of determining whether the call request button for the extension subscriber in the call is input according to the determination result of the first step; And if it is determined that the call request button is input in the second process, transmitting a tone signal corresponding to the call request to the terminal of the in-call extension subscriber. The method of claim 1, And transmitting the tone signal corresponding to the call request for a predetermined time and releasing the transmission of the tone signal. Claims [1] A method for requesting a call to a subscriber in a call in a private switching system having an extension terminal having a call request button and an LED indicating a call request. When a predetermined telephone number is input, determining whether the extension subscriber of the input telephone number is busy; A second step of determining whether the call request button for the extension subscriber in the call is input according to the determination result of the first step; If it is determined that the call request button is input in the second process, the call request method, characterized in that the third step of turning on the LED for notifying the call request to the terminal of the extension subscriber in the call. The method of claim 3, And turning off the LED when a predetermined time elapses after turning on the LED for notifying the call request. Claims [1] A method for requesting a call to a subscriber in a call in a private switching system having an extension terminal having a call request button and an LED indicating a call request. When a predetermined telephone number is input, determining whether the extension subscriber of the input telephone number is busy; A second step of determining whether the call request button for the extension subscriber in the call is input according to the determination result of the first step; A third step of transmitting a tone signal corresponding to the call request to the terminal of the extension subscriber in the call, when it is determined that the call request button is input in the second step; If it is determined that the call request button is input in the second step, the call request method, characterized in that the fourth step of turning on the LED for notifying the call request to the terminal of the extension subscriber in the call. The method of claim 5, wherein in the third process, And transmitting the tone signal corresponding to the call request for a predetermined time and releasing the transmission of the tone signal. The method of claim 6, wherein in the fourth process, And turning off the LED when a predetermined time elapses after turning on the LED for notifying the call request.