KR19990053785A - How to check if the incoming call rejection function is registered in the private exchange system - Google Patents

Abstract

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

How to check the rejection function in a private exchange system.

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

When setting up the rejection function in the private exchange system, it provides a way to confirm the fact to the user.

All. Summary of the Solution of the Invention

When the subscriber terminal of the private exchange system is off-hook, it is checked whether the incoming call rejection function and the ringing tone generated in response to the incoming call rejection function are registered. It characterized in that output to the subscriber terminal.

la. Important uses of the invention

It is possible to check whether the incoming call rejection function is set in the subscriber terminal having no display unit subscribed to the private exchange system.

Description

How to check if the incoming call rejection function is registered in the private exchange system

The present invention relates to a method of confirming a call rejection function in a private exchange system, and more particularly, to a method of confirming the fact to a user through a dial tone when setting a call rejection function in a private exchange system.

Typically, the Do Not Disturb function in a private exchange system is a function that allows a subscriber to reject a call that is received by the subscriber, so that the ring is not sent but only the outgoing call is received. This is a function of transmitting a busy tone or an error tone to the calling party without receiving a call when the incoming call rejection function (DND) is registered in the subscriber station of the private switching system.

On the other hand, in the case of a digital subscriber station equipped with a display device such as an LCD, if the incoming call rejection function is registered, the registered fact is displayed on the LCD, and the user indicates that his or her terminal is registered in the call rejection function. Able to know.

However, in the case of a subscriber station in which the display means is not implemented, that is, not provided with a display device such as an LCD, the user cannot know whether or not his terminal has registered the call rejection function. This is because the user does not know whether or not the call rejection function is set, and if the call rejection function is forgotten in a registered state, a problem occurs such as not knowing why the call is not received to the user. It may be mistaken for the failure of the product to have the reliability.

Accordingly, it is an object of the present invention to provide a method for confirming whether or not a call rejection function is registered by transmitting to a user whether a call rejection function is registered in a private exchange system.

In order to achieve the above object, the present invention, if the subscriber terminal of the private exchange system off-hook, and confirms that the incoming call rejection function and the ring tone generated in response to the incoming call rejection function is registered, the incoming call rejection function is registered If it is determined that there is, it proposes a method for outputting the fact to the subscriber terminal using the dial tone.

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

2 is a flowchart illustrating a method of confirming whether a call rejection function is registered according to an embodiment of the present invention;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, in the following description of the present invention, when it is determined that detailed descriptions of related well-known functions or constructions may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted, and generally customary in constructing the present invention. Components and functions used as such will be omitted. The terms to be described below are terms defined in consideration of functions in the present invention, and may be changed according to the intention or custom of the user or chip designer, and the definitions should be made based on the contents throughout the present specification.

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

Referring to FIG. 1, the central processing unit 100 processes a preset program to control a call switch and to control various services and operations according to the present invention. The RAM 110 includes a program and a volatile data processing area, and is composed of a plurality of various buffers and used as a working memory of the CPU 100. The ROM 120 includes a control program for performing call and call waiting functions. The switching circuit 130 switches various tone and voice data, connections between stations, and connections of trunk lines under the control of the CPU 100. The general subscriber circuit 140 performs interfacing between a general telephone and a device of a plurality of subscribers. The ring generator 150 outputs a ring signal in the form of a square wave to the general subscriber circuit 140. The key phone subscriber circuit 160 performs an interface between a plurality of key phone telephones and a 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 170 is controlled by the central processing unit 100, and scissor the trunk line to form a trunk line loop. In addition, an incoming signal received through the trunk line is interfaced. The DTMF receiver 190 analyzes the DTMF signal generated from the subscriber of the general subscriber circuit 140. Meanwhile, the DTMF transmitter 200 outputs the DTMF signal to the switching circuit 130 under the control of the CPU 100. The clock circuit 105 provides a clock function to the CPU 100, and has a timer function for counting a predetermined time. In the ROM 120, a dial tone generated in response to a call rejection function according to the present invention described below and a basic dial tone generated by default are set and registered.

2 is a flowchart illustrating a method of confirming registration of a call rejection function according to an embodiment of the present invention.

Before describing FIG. 2, in order to implement the present invention, the private exchange system shown in FIG. 1 should be a private exchange system in which an incoming call rejection function is performed.

See, Figure 2 above. In step 210, it is determined whether the subscriber station is off-hook. That is, it detects whether the user uses the subscriber station to make a call. If it is determined in step 210 that the subscriber station is off-hook, it is determined in step 212 whether the incoming call rejection function is registered in the subscriber station. If it is determined in step 212 that the incoming call rejection function is registered in the subscriber station, it is determined in step 214 whether a dial tone generated corresponding to the incoming call rejection function is registered. The dial tone corresponding to the call rejection function is set and registered in the ROM 120, which may be selected and stored by a manufacturer or a user of a private exchange system. If it is determined in step 214 that the dial tone corresponding to the call rejection function is registered, the dial tone registered in step 216 is generated to the subscriber station. The generated dial tone is generated through the receiver of the subscriber terminal or when the speakerphone function is implemented. At this time, the user hears the generated dial tone and can know that the call rejection function is set in his terminal. On the other hand, if the call rejection function is not registered in step 212 or if the dial tone generated in response to the call rejection function is not registered in step 214, the call exchange function is set by default in the private exchange system in step 213. Generate a dial tone. That is, the type of the dial tone transmitted to the user varies depending on whether the incoming call rejection function is registered. Therefore, the user can know whether to register the incoming call rejection function even if the user hears the dial tone. In step 216 or step 213, the dialing operation is performed by the user in step 218. If the dialing operation is a telephone number input, a call is made. If the dialing operation is an input for canceling a call rejection function, the registered call rejection function is released. Step 220 indicates that the corresponding function is performed by this dialing.

Meanwhile, in the above-described embodiment of the present invention, only the dial tone is expressed. However, according to the function state of the private exchange system, the dial tone may be generated by selecting from various dial tones. You can also generate a voice prompt at. For example, a message such as 'Currency rejection is currently registered'.

The present invention as described above has the advantage that it is possible to know whether or not the incoming call rejection function is set even in the subscriber station does not have a display device in the private exchange system.

Thus, the user is provided with the service of a private exchange system which is more convenient.

Claims (3)

In the method of confirming whether or not to register the incoming call rejection function in the private exchange system, When a predetermined subscriber station subscribed to the private exchange system is off-hook, it is checked whether a ring tone generated through the subscriber station is registered in response to the call rejection function and the call rejection function, and the call rejection is performed on the subscriber station. And if it is determined that the function is registered, generating the dial tone to the subscriber station. The method of claim 1, If it is confirmed that the dial tone generated through the subscriber terminal in response to the call rejection function and the call rejection function is not registered, the subscriber station generates a basic dial tone which is basically registered in the private exchange system. How to check whether the incoming call rejection function is registered in the private exchange system. In the method of confirming whether or not to register the incoming call rejection function in the private exchange system that the voice guidance message generation operation is performed, When the predetermined subscriber station subscribed to the private exchange system is off-hook, it is checked whether the voice guidance message generated through the subscriber station is registered in response to the call rejection function and the call rejection function, And if it is determined that the incoming rejection function is registered, generating the voice guidance message to the subscriber station.