KR100584353B1 - Call notification method using caller ID code - Google Patents

Abstract

The present invention relates to a method for notifying an incoming call to an extension subscriber in a private exchange. When the caller identification information is received together with a call over a trunk line, the present invention provides a ring service to a digital key phone terminal and provides a caller telephone number according to the caller identification information. For example, if the call is terminated before the response corresponding to the ring service is made, the call notification method is implemented using the caller identification code that continuously provides the caller's telephone number until the confirmation from the digital key phone terminal after confirmation of the ring service.

Description

Call notification method using caller ID code

The present invention relates to a method for notifying an incoming call to a subscriber in a private exchange, and more particularly, a method for notifying that an incoming call has been received by using a received caller identification code.

In general, a private exchange system refers to a small exchange switching a communication terminal according to a plurality of trunk lines and a plurality of extension subscribers in the same building or the same company. For example, a key phone system and a private branch exchange (PBX). Exchange) and Private Branch Automatic Exchange (PABX).

These private exchanges are trying to implement by various methods to provide the subscribers with information to identify the caller, a typical example is a method of informing the subscribers the caller's telephone number using the caller identification code.

That is, when a call is generated by the originator, the local exchange configures information on the subscriber who has made the call as a caller ID code (hereinafter referred to as "CID") and transmits it to the called party during the idle period of the ring signal. The called party means a private exchange when using a private exchange, and may be a general subscriber terminal when not using a private exchange. The called party receiving the CID analyzes the received CID and provides the analyzed caller's telephone number to the subscriber station so that the user can detect the caller's telephone number.

However, in the conventional case, the caller's telephone number is serviced to the called subscriber only while the ringer is maintained by the caller, and when the caller ends the call attempt, the service providing the caller's telephone number is terminated together. As a result, the user of the extension terminal that was called after the caller finished the call attempt could not know from whom the call was received.

Accordingly, an object of the present invention for solving the above problems is to provide a method for notifying that there is an incoming call even after the caller's call attempt is terminated.

Another object of the present invention is to provide a method for displaying a caller's telephone number indicating that there is an incoming call even after the caller's call attempt ends by using a caller identification code provided by the caller's call attempt.

According to the present invention for achieving the above object, when a call is received with the caller identification information, a ring service and a caller telephone number included in the caller identification information are provided to the corresponding terminal, and a response corresponding to the ring service is provided. If the caller gives up the call before this occurs, the caller's phone number is continuously provided until the caller stops the ring service and the caller's phone number is provided until the caller confirms the call. Incoming call notification method using the caller ID code is implemented.

More preferably, when the confirmation by the terminal is a call request of the caller's phone number, the caller ID code is implemented to automatically dial the caller's phone number.

Hereinafter, described in detail with reference to the accompanying drawings according to an embodiment of the present invention.

First, the configuration of a private exchange according to an embodiment of the present invention includes a CID detection unit 122 for detecting a caller identification code (CID) received through a trunk line as shown in FIG. 1.

Referring to the configuration of the private exchange for applying the present invention with reference to FIG. 1, the control unit 110 performs the overall control for each configuration in performing an operation for servicing the various functions provided by the private exchange. In particular, the present invention analyzes the CID provided through the trunk line and performs control to provide the caller's telephone number to the corresponding subscriber. In addition, the control unit 110 performs a control for providing a caller's telephone number until confirmation of the corresponding extension subscriber even when the caller's end of call attempt is detected.

The switching unit 114 switches between various components configuring the private exchange under the control of the control unit 110. In particular, in the present invention, even if the caller's call attempt is terminated under the control of the controller 110, switching to the extension subscriber is provided so that the caller's telephone number is continuously provided.

The memory unit 112 records and stores various kinds of data generated from the control program and the private exchange required for the control unit 110 to perform the control.

The ring generating unit 124 generates a ring signal corresponding to an incoming call under the control of the control unit 110, and the ring generating unit 124 passes through the switching unit 114 to a subscriber such as an extension subscriber, a key phone telephone, or a digital key phone telephone. Is provided.

The DTMF receiver 126 analyzes a dual tone multi frequency signal (hereinafter, referred to as a "DTMF signal") applied through the switching unit 114 and provides the same to the controller 110.

The DTMF transmitter 128 generates a desired DTMF signal under the control of the controller 110 and outputs the desired DTMF signal to the switching unit 114.

The general subscriber circuit 116 performs a function of interfacing the general subscriber among the switching unit 114 and the extension subscriber under the control of the controller 110.

The trunk line circuit 118 is composed of a general trunk line circuit and a DID interface unit to perform a function of interfacing the general trunk line and the DID trunk line with the switching unit 114 under the control of the controller 110.

The key subscriber subscriber circuit 120 performs a function of interfacing the key subscriber among the switching unit 114 and the extension subscriber under the control of the controller 110. The key subscriber is connected to the key subscriber subscriber circuit 120 through a voice line of one line and a control line of one line, and can be classified into an analog key phone and a digital key phone according to a signal processing method. In particular, the present invention is to provide a caller's telephone number under the control of the control unit 110 only for the digital key phone.

The CID detector 122 detects a CID provided with a ring signal from a local exchange (not shown) and provides the detected information to the controller 110. An example of receiving the CID received with the incoming ring through the trunk line from the local exchange is shown in FIG. 3.

The control flow performed by the controller 110 to notify the call using the CID in the private exchange according to an embodiment of the present invention is illustrated in FIG. 2.

Referring to Figure 2 briefly look at the incoming call notification process using the CID, when the CID is received with the call over the trunk line provides a ring service to the digital key phone terminal and at the same time provides the caller phone number according to the CID, the ring service If the call is terminated before a response corresponding to the call is terminated, the ring service is terminated and the caller's telephone number is continuously provided until confirmation is received from the digital key phone terminal.

Hereinafter, an operation according to an exemplary embodiment of the present invention will be described in detail with reference to the above configuration.

First, the operation according to the present invention to be described in detail below is an example applied to a digital key phone, the detailed description is not the same, but when the display window for displaying the caller's telephone number of the key phone terminal having a control line is the same It will be obvious that this is applicable.

First, the control unit 110 that manages the overall processing of the private exchange monitors whether there is a call in step 210. The call reception corresponds to an incoming call through a CO line capable of transmitting CID, and in this case, the detection of the incoming call may be received through the CO line 118 to notify the controller 110 that the call is received.

If the control unit 110 detects the incoming call in step 210, it performs a process of analyzing the incoming call in step 212. The incoming call is analyzed by the CID detector 122. The CID detector 122 determines whether the incoming call received through the trunk line circuit 118 includes the CID.

If the detection of the CID is detected by the determination of the CID detector 122, the controller 110 determines this in step 214 and then proceeds to step 216. Otherwise, if the CID detection cannot be detected in step 214, the control proceeds to step 240 where normal control performed when the CID is not used is performed.

However, if the control unit 110 detects the reception of the CID and proceeds to step 216, the control unit 110 analyzes the caller switching number included in the CID and stores it in the internal buffer. When the storing by the analysis of the caller's telephone number is completed, the controller 110 proceeds to step 218 to start a ring service for calling the corresponding subscriber called by the caller. The ring service refers to an operation in which the controller 110 controls the switching unit 114 to connect the ring generator 124 continuously generating a ring signal to a corresponding subscriber.

If the ring service is made, the control unit 110 proceeds to step 220 and checks whether the extension terminal currently providing the ring service is a digital key phone terminal capable of receiving the service according to the present invention. If it is determined by the inspection that the extension terminal currently being provided with the ring service is a digital key-phone terminal, the flow proceeds to step 222;

In step 228, the controller 110 monitors whether the corresponding extension terminal responds to the ring service, and if a response is made, proceeds to step 230 to perform a voice call service.

However, if it is determined that the digital key phone terminal proceeds to step 222, the controller 110 provides the caller phone number stored in the internal buffer to the corresponding digital key phone terminal. The caller's telephone number is transmitted through the control line connected to the corresponding digital key-phone terminal by requesting the control unit 110 to the key-phone subscriber circuit 120.

During continuous transmission of the caller's telephone call, the controller 110 monitors whether the corresponding digital key phone terminal responds in response to the ring service in step 224, and in step 226, whether the caller who attempts the call gives up the call attempt. Watch. The call abandonment means that the call is blocked because the caller releases the handset.

If a response is made by the corresponding digital key phone terminal in step 224, the controller 110 proceeds to step 230 to service a normal voice call. However, if the caller gives up the call attempt before the response is made, the controller 110 proceeds to step 232 to terminate the ring service. Termination of the ring service may be performed by the controller 110 controlling the switching unit 114 to block the ring generator 124 from the corresponding digital key phone terminal.

On the other hand, even if the call attempt is terminated, the controller 110 continuously provides the caller's telephone number to the corresponding digital key phone terminal until confirmation from the digital key phone terminal. The process accordingly is disclosed in steps 234 to 238.

In step 234, the control unit 110 continuously provides the caller phone number stored in the internal buffer so that the caller phone number is continuously displayed on the display window of the corresponding digital key phone terminal. While the caller's telephone number is being displayed, the controller 110 checks whether the verification of the caller's telephone number is made by the digital key phone terminal (236). Confirmation of the caller's phone number indicates that the user has confirmed that there is an incoming call from the displayed caller's phone number.

If it is determined in step 236 that the caller's telephone number has been confirmed, the control unit 110 proceeds to step 238 and blocks the provision of the caller's telephone number which has been continuously provided.

If the confirmation procedure detected in step 236 corresponds to a request for calling the caller's phone number displayed, the controller 110 controls the DTMF transmitter 128 according to the caller's phone number stored therein to call the caller. .

The function of displaying the above-mentioned caller's telephone number can be selected as an option in the digital key-phone terminal, and a table for storing and managing the caller's telephone number to be serviced corresponding to each digital key-phone terminal should be provided.

As described above, the present invention can provide the user with a more convenient service by informing the user of the caller's telephone number even when the caller gives up the call.

1 is a view showing the configuration of a private exchange according to an embodiment of the present invention.

2 is a diagram illustrating a control flow for call notification using a caller ID code in a private exchange according to an embodiment of the present invention.

3 is a diagram showing an example of receiving a caller identification code received with an incoming ring;

Claims (4)

In the private exchange, even if the caller gives up the call, the caller identification code is used to notify that there is an incoming call. Providing a ring service and a caller's telephone number included in the caller's identification information to the corresponding terminal when a call is received with the caller's identification information, If the caller abandons the call before the response corresponding to the ring service occurs, continuously stopping the ring service and continuously providing the caller's telephone number until confirmation by the corresponding terminal is made; When the confirmation by the terminal is made, the call notification method using the caller identification code characterized in that the process of stopping the provision of the caller phone number. The method of claim 1, And when the confirmation by the corresponding terminal is a call request of the provided caller's telephone number, calling the caller's telephone number. In the private exchange, even if the caller gives up the call, the caller identification code is used to notify that there is an incoming call. When the incoming call is detected through the CO line, the process of analyzing whether the caller ID information is included, Storing the caller's telephone number included in the caller identification information in response to the called digital key phone terminal if the caller identification information is included; Providing the stored caller's telephone number with a ring service to the called digital key-phone terminal after the storing is completed, and checking whether the incoming call is abandoned before a response corresponding to the ring service; Continually providing the caller's telephone number to the digital key-phone terminal after stopping the ring service if the incoming call is abandoned before a response corresponding to the ring service occurs; Checking whether the caller's telephone number is confirmed through the digital key phone terminal while the caller's telephone number is provided; When the confirmation is made, the call notification method using the caller identification code characterized in that the process of stopping the provision of the caller phone number. The method of claim 3, And when the confirmation by the digital key phone terminal is a call request of the caller's telephone number, calling the caller's telephone number.