KR100247030B1 - Method for announcing a caller information in digital communication network - Google Patents

Abstract

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

The present invention relates to a method of guiding a called party's information to a called party in a digital communication network.

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

Even when the absent subscriber is called, the information of the calling subscriber is informed to the absent subscriber.

All. Summary of Solution of the Invention

According to the present invention, a method of guiding caller information in a digital communication network supporting a calling party subscriber information display (CLIP) service includes information of a subscriber calling the absent subscriber included in the call setup information to which a call is received to the absent subscriber. Storing the call with the call time, notifying the outside that the call is received by turning on the light emitting diode (LED), and when the absent subscriber requests the caller information in response to the lighting of the LED, the stored call is stored. And displaying the subscriber's information and the call time at the same time.

la. Important uses of the invention

Communication terminal accommodated in digital communication network.

Description

Caller Information Guidance in Digital Communication Network

The present invention relates to a method of guiding information of a calling party to a called party in a digital communication network, and more particularly, to a method of guiding information of a calling party received in an absence of a called party.

Typical forms of networks were analog networks. However, with the development of technology, Integrated Services Digital Network (ISDN), Asynchroonous Transfer Mode (ATM), Global System for Mobile communication (GSM), Digital European Cordless Telephone (DECT), and Personal Personal Computer (PCS) Digital communication networks such as Communication Services have been developed and used. Such digital communication networks provide various services unlike analog communication networks.

For example, a digital communication network has an additional service called "Calling Line Identification Presentation" (CLIP), which is ringed by an incoming call when the incoming call is received or the called party responds. It refers to a service that displays the information (address) of the calling party subscriber on the liquid crystal display (LCD) of the called party communication terminal. Accordingly, the called party subscriber has the convenience of knowing who the calling party subscriber is when the call comes in.

However, since the CLIP service is performed only when there is an incoming call, the information of the calling party is displayed on the called party's communication terminal. Therefore, when the called party is absent, the service is meaningless. Therefore, there is a problem that it is not possible to check whether a call is received from the outside when the called party subscriber returns from the office.

Accordingly, an object of the present invention is to provide a method for guiding information of a subscriber calling a missed subscriber in a digital communication network.

Another object of the present invention is to provide a method of storing and displaying information of a subscriber calling a missed subscriber in a digital communication network.

It is another object of the present invention to provide a method for automatically setting up a call using information of a subscriber calling a missed subscriber in a digital communication network.

The present invention for achieving these objectives proposes a method for guiding caller information in a digital communication network supporting a Calling Party Information Display (CLIP) service, which is included in the call setup information when a call is received to an absent subscriber. Storing the information of the subscriber who called the absent subscriber with the call time, notifying the outside that the call has been received by turning on a light emitting diode (LED), and responding to the lighting of the LED by the absent subscriber When the information is requested, the stored call subscriber information and the call time are simultaneously displayed.

According to the present invention, a caller information guide method in a digital communication network supporting a calling party subscriber information display (CLIP) service includes information on a subscriber who has called the absent subscriber included in call setup information when a call is received to a missing subscriber. Caller information storage process to store along with the call time, the call notification process to inform the outside by lighting the light-emitting diode (LED) that the call was received, and in response to the lighting of the LED, the absent subscriber provides caller information guidance On request, a display process of simultaneously displaying the information of the call subscriber and the call time and a call setup process of setting up a call by using the information of the call subscriber selected during the display process.

In this way, even when a call is received in the absence of the present invention, when the absent subscriber returns and requests the caller information guidance, the present invention can confirm who the call came from and at which time the caller can be automatically called.

1 is a diagram showing the configuration of an integrated telecommunications network switch to which the present invention is applied.

2 is a diagram showing the configuration of an incoming call information table according to the present invention;

3 is a flowchart illustrating a process of storing incoming call information according to the present invention.

4 is a diagram illustrating a processing flow of reproducing incoming call information according to the present invention.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description of the present invention, when 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 will be outlined. In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary 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.

First of all, the present invention can be applied to digital communication networks such as ISDN exchange, ATM, GSM, DECT, PCS and the like. However, in the specific embodiment of the present invention, as shown in Figure 1 will be described a caller information guidance method applied to a digital telephone housed in an ISDN switch.

Referring to FIG. 1, an ISDN exchange to which the present invention is applied includes at least a Central Processing Unit (CPU) 104 that inputs or applies signaling data from a digital telephone (key phone or digital phone) 106,108. The digital telephones 106 and 108 are composed of a handset A, a liquid crystal display (LCD) B, and a plurality of function buttons C, and constitute an extension of an ISDN exchange. Here, the plurality of function buttons C are provided with function buttons for operation according to the present invention. For example, a key for requesting caller information, a selection key used to select caller information other than the caller information currently displayed when there is a plurality of caller information, and the caller information being displayed are automatically dialed. A call setup request key is provided. Here, the caller information guide key is provided with a light emitting diode (LED), which illuminates when a call is made to an absent subscriber, indicating that the call has been made, and the absent subscriber returns to press the key. In this case, the caller information request is transmitted to the CPU 104. The memory 102 is controlled by the CPU 104, stores system programs for various operations of the ISDN exchange, and stores data processed during various operations. In the case of the present invention, the incoming call information table as shown in FIG. 2 is constructed in the memory 102, and a program according to the processing flow as shown in FIGS. 3 and 4 is stored.

The subscriber access unit 110 applies the signaling data from the CPU 104 to the digital telephones 106 and 108 and provides the signaling data from the digital telephones 106 and 108 to the CPU 104. The switching circuit 120 is controlled by the CPU 104 to form a communication path between the stations, between the stations and the trunk line. The tone generator 112 is controlled by the CPU 104 and supplies the tone to the communication path formed by the switching circuit 120. The dual tone multi frequency (DTMF) generator 114 generates a DTMF signal corresponding to the dial digit. The digital trunk line connecting unit 116 interfaces between the digital trunk line L1 and the switching circuit 120, and the analog trunk line connecting unit 118 interfaces between the analog trunk line L2 and the switching circuit 120. The digital trunk line L1 and the analog trunk line L2 are connected to a national exchange (C.O .: Central Office), respectively.

2 is a diagram showing the configuration of an incoming call information table according to the present invention, in which information related to an incoming call when the subscriber is absent-caller information (address of the calling terminal) and a call reception time is stored.

Caller information guide operation according to the present invention can be largely divided into two operations. The first operation is to store the caller information on the incoming call when the subscriber is absent according to the processing flow as shown in FIG. Such caller information can be stored in the call setup information (SET_UP) message received from the ISDN exchange to the digital terminal, the called terminal, including the calling party subscriber information "Calling Party Number IE (Information Element)". Because. In the second operation, when the subscriber returns from the absence, the subscriber confirms that a call is made while he is away from the LED installed on the caller information request key on the digital telephone 106, and responds when the key is pressed. This is a guide to previously stored caller information.

It is now assumed in FIG. 1 that the subscriber of the digital telephone 106 is absent and there is an incoming call through the digital trunk line connecting section 116 to the absent digital telephone 106. At this time, the information necessary for call setup is transmitted from the network to the digital telephone 106. The call setup information includes channel information necessary for communication, information such as bearer capability and address of the called terminal, and if the network supports a Calling Line Identification Presentation service, the calling terminal Address information is also included. The CPU 104 of FIG. 1 checks if there is an incoming call in step 301 of FIG. 3, and then checks whether an address (phone number) of the calling terminal is included in the call setup message in step 302. If the originating terminal address is not included in the call establishment message, the CPU 104 establishes a call according to a normal flow in step 303.

On the other hand, when it is confirmed that the call setup message includes the address of the calling party terminal, the CPU 104 displays the address of the calling party and the time when the call is received in step 304 in the incoming call information table shown in FIG. Save it. After performing step 304, in step 305, the CPU 104 transmits a response message for the call setup information received by the called terminal 106 to the network side. At this time, the response message includes channel information necessary for call setup. After transmitting the response message, the CPU 104 detects whether the subscriber of the called terminal 106 is off-hook. If it is detected in step 306 that the subscriber of the terminating terminal 106 is off-hook, that is, if it is detected that the subscriber has responded to the incoming signal, the CPU transmits a call connection message in step 311 and the LCD (B) of the terminating terminal 106. After the stored calling party address is displayed on the screen, the calling party address and the incoming time are cleared in step 313. In step 314 after step 313, a call operation is performed according to a normal flow.

If it is detected in step 306 that the subscriber of the called terminal 106 is not off-hook, that is, it is detected that the subscriber is absent, the CPU 104 determines the elapse of the preset time in step 307 and then releases the call release from the network in step 308. Receive the dismissal message indicating. In step 309, the CPU 104 checks the Cause Information Element in the received call cancellation message to determine whether the current subscriber is not off-hook due to the absence of the called subscriber or the network or the terminal. Determine whether or not. If the cause information element is "No Answer" in the received call cancellation message, it indicates that the called subscriber is absent, and if it is not "No Answer", it corresponds to an abnormality of a network or an abnormality of a terminal. If it is determined in step 309 that the cause information element is "No Answer", the CPU 104 transmits a call release completion message in step 310. However, if it is determined in step 309 that the cause information element is not "No Answer", the CPU 104 proceeds to step 313 to clear the calling party address and the incoming time stored in the incoming call information table, and in step 314 according to the normal flow. Perform the action.

The operation of storing caller information as shown in FIG. 3 is summarized as an operation of storing an address and an incoming time of an originating terminal when a call is received to an absent subscriber. Since the address and the incoming time of the calling terminal, which are the information of the incoming caller, are stored in this way, the missed subscriber can come back and confirm. At this time, the fact that the call is received and the caller information is stored can be confirmed because the LED installed in the caller information guide key provided in the function button unit C on the digital telephone 106 is turned on.

If the subscriber of the digital telephone 106 who was away returns from the absence, the subscriber can confirm that the call is made from the LED lighted on the caller information guide key. Accordingly, when the subscriber presses the caller information guidance request key, the CPU 104 determines that there is an incoming call information guidance request from the subscriber in step 401 of FIG. After that, the CPU 104 reads the information of the calling party address and the incoming time stored in the incoming call information table of the memory 102 in step 402 and displays it on the LCD B of the digital telephone 106. When the subscriber presses a key for call setup request, the CPU 104 dials the address of the calling party displayed on the LCD B using the DTMF generator 114 in step 406. That is, the CPU 104 transmits a call setup message to the caller who has arrived while in step 406. After the call setup message is transmitted, the call operation is performed according to the normal flow in step 407.

On the other hand, if the subscriber is absent, there may be several people calling the absent subscriber, in which case it is necessary to check the information of other callers. When the subscriber requests another call information information according to this need, the CPU 104 checks this in step 404 and in response to this, the CPU 104 increases the information storage area of the call information table in step 405 to another caller address and call timing. To be displayed. In the caller information display operation, only one caller information may be displayed on the LCD B of the digital telephone 106 in the size of the LCD B, and several caller information may be displayed. During this display, if the subscriber presses a selection key on the function button unit C to request another call information guidance, the information of the next caller is displayed. The operation of transmitting the call setup message using the selected caller information is performed in the same manner as the operation 406 described above.

The incoming call information guiding operation as shown in FIG. 4 is performed and displayed when the subscriber who returns from the member presses the caller information guiding request key, and is displayed when the subscriber requests call setting during such display. The address is dialed automatically. Therefore, the absent subscriber can check his / her missed call, and can make a call with the caller who has previously called by requesting a call during the check.

As described above, the present invention has an advantage in that, when a call is received during an absence, when an absent subscriber comes back and requests a caller information guidance, at what time and from whom the call came. In addition, if the caller information is selected during the caller information, there is an advantage that the caller can be automatically called.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. For example, in the specific embodiment of the present invention, the caller information guidance method according to the present invention is described as being applied to the ISDN exchange, but the present invention can be applied to digital communication networks such as ATM, GSM, DECT, PCS, etc. in addition to the ISDN exchange. It should be noted. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

Claims (12)

Claims [1] A method for guiding caller information in a digital communication network supporting a calling party information display (CLIP) service. Storing the information of the subscriber who called the absentee included in the call setup information together with the call time when the call is received to the absent subscriber; The process of informing the outside by lighting the light emitting diode (LED) that the call has been received; And displaying the stored call subscriber information and the call time simultaneously when the absent subscriber requests guidance of the caller information in response to the lighting of the LED. The method of claim 1, wherein the call subscriber information is a phone number of a calling terminal. The caller information guidance method according to claim 1, wherein the caller information guidance request is made by the absent subscriber entering a preset key provided with the LED. In the caller information guidance method in a digital communication network supporting a caller information display (CLIP) service, A caller information storing process of storing the information of the subscriber calling the absent subscriber included in the call setup information together with the call time when the call is received to the absent subscriber; A call notification process that notifies the outside by turning on a light emitting diode (LED) that a call has been received; A display process of simultaneously displaying the call subscriber information and the call time when the absent subscriber requests the caller information guidance in response to the lighting of the LED; And a call setup process for setting up a call by using the information of the selected call subscriber during the display process. 5. The caller information guiding method according to claim 4, wherein the call subscriber information is a telephone number of a calling terminal. 6. The caller information guiding method according to claim 5, wherein the call establishment process sets up the call by automatically dialing the telephone number of the selected caller terminal during the display of the callee information using the duplex tone frequency generator. . Claims [1] A method for guiding caller information in a digital communication network supporting a calling party information display (CLIP) service. Confirming the address of the calling terminal from the call setup information in response to the predetermined incoming call, and storing the confirmed calling address and the incoming time of the calling terminal; The process of informing the outside by lighting the light emitting diode (LED) that the call has been received; Detecting whether the called party is off-hook in response to the lighting of the LED; If the called party is off-hook, displaying the calling party terminal address on the called terminal and clearing the stored calling party terminal address; If the called party is not off-hook, displaying the calling party terminal address and the called time on the called party terminal in response to a caller information request of the called party. Caller Information Guide. 8. The caller information guiding method according to claim 7, wherein the calling party terminal address is a phone number of the calling party terminal. The caller information guiding method according to claim 7, wherein the caller information guiding request is made by the called party's subscriber inputting a preset key provided with the LED. Claims [1] A method for storing caller information in a digital communication network supporting a call party subscriber information display (CLIP) service. A storing process of confirming an address of a calling terminal from call setting information in response to a predetermined incoming call and storing the confirmed calling address and an incoming time of the calling terminal; A call notification process that notifies the outside by turning on a light emitting diode (LED) that a call has been received; A detecting step of detecting whether the called party is off-hook in response to the incoming call; A first clearing process of displaying the calling party terminal address on the called party terminal and clearing the stored calling party terminal address and the called time when the called party is off-hook; A determination process of determining a cause of the off-hook of the called party if the called-party subscriber does not off-hook; A call release process of releasing the incoming call when the cause of not being called off by the called party is caused by the absence of the called party; And the second clearing step of clearing the originating terminal address and the originating time when the cause of not being off-hooked by the called party is caused by an error of the communication network or the called terminal. . 11. The method of claim 10, wherein when the called party does not off-hook, after receiving a call release message from the communication network after a preset time has elapsed, the cause information element in the call release message is checked and the called party subscriber is turned off. And determining that the cause of no hooking is caused by the absence of the called party subscriber or by the communication network or the called terminal. 12. The method of claim 10 or 11, wherein the calling party terminal address is a telephone number of the calling party terminal.

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