KR19980015789A - Call request control device and method thereof - Google Patents

Abstract

The present invention relates to a call request control apparatus and a method thereof, and more particularly, to a digital DBS receiver (10); A telephone 20; RSMS 30; And a public network (40), comprising: an erroneous call request detector (100) for detecting an erroneous call request in the digital DBS receiver (10); And a display and automatic correction unit (200) for notifying the telephone user of the incorrect call request and automatically correcting the wrong call request in the telephone (20). The call request control method in the above- A step (S10) of terminating a call request control process when there is a voice signal after determining that there is a voice signal in the line; (S20) of determining that the non-voice time has exceeded the reference time if there is no voice signal and then terminating the call request control process if the non-voice time has not exceeded the reference time; If the digital DBS receiver 10 does not exceed the reference time, generating and transmitting a paging signal (S30); (S40) warning the telephone user that the call receiving the call signal is a wrong call request; Determining whether there is an input of the telephone user of the alert, and terminating the call request control process if there is an input (S50); And a step S60 of automatically short-circuiting the false call request when the telephone user does not have an input. According to the present invention described above, the information can be exchanged even when a wrong call is requested, Thereby facilitating viewing of the program.

Description

Call request control device and method thereof

The present invention relates to a call request control apparatus and a method thereof, and more particularly to a call request control apparatus and a method thereof, and more particularly to a call request control apparatus and method, The present invention relates to a call request control apparatus and method for enabling information exchange even when an incorrect call is requested by automatically detecting and displaying a call request (HOOK-OFF).

Generally, a digital DBS is a broadcasting system in which a broadcasting signal is retransmitted through a satellite repeater for the purpose of direct reception in a general household. With the recent development of the technology, direct reception is possible by installing a small antenna and a receiving apparatus, .

The reason why the above-mentioned digital DBS is widely spotlighted in the world is that it is advantageous in data error correction technology and compression technology, and it is advantageous in that it can perform uniform and high quality broadcasting over a wide area with a small output compared with terrestrial broadcasting. Korea will also launch digital DBS from 1996 using Mugunghwa satellite.

1 is a block diagram schematically illustrating the configuration of the digital DBS system described above. The digital DBS system includes a service provider 1, a satellite transponder 2, a subscriber 3, switched telephone network (PSTN).

The service provider side 1 comprises a transmission system 11 (Encoder Transmitter) for transforming, compressing and multiplexing television signals into transport stream packets, channel-coding the signals, and transmitting the signals to a satellite in a frequency band of 14 GHz And a resource subscriber management system (hereinafter referred to as RSMS) 12 for collecting usage information of the subscriber and controlling the subscriber access to the program.

The satellite transponder 2 receives the transport stream from the transmission system 11, amplifies it, and retransmits it to the 12 GHz frequency band.

The subscriber side 3 includes a low noise block-down converter (LNB) 31 for dropping the 12 GHz band transport stream relayed from the satellite transponder 2 to an intermediate frequency signal of 1 GHz band and removing noise, A digital DBS receiver 32 for decoding a signal from the LNB 31 and a television 33 for outputting a signal from the digital DBS receiver 32, that is, a digital DBS .

The public network 4 is used for pay-view information exchange between the RSMS 12 and the digital DBS receiver 32. Here, the public network 4 is a public communication network that is used up to now to communicate with a telephone or other communication equipment.

2 is a block diagram illustrating a conventional call request control apparatus in the digital DBS receiver. 2 includes a microcomputer 21, a smart card 22, a modem 23, a line detection unit 24, a switching unit 25, a bidirectional communication unit 26, a voice signal detection unit 27, a counter 28, a display unit 29, and a keypad 30, and is connected to the public network 40.

In the digital DBS receiver 20, a conventional erroneous call request detection device is connected to the RSMS 60 via the public network 40 and to the communication device 80 via a telephone line.

Here, the microcomputer 21 controls the entire system, and the smart card 22 grants permission to decrypt the encrypted data so that only the subscriber having the reception right can receive the data, If the subscriber subscribes, stores and provides information about the subscriber.

The line detector 24 detects a call request from the telephone line and outputs a detection signal to the microcomputer. The switching unit 25 switches the use authority of the telephone line to a telephone call Or to exchange information.

The bidirectional communication unit 26 allows the communication on the telephone line determined by the switching unit 25 to be performed in a bidirectional manner and the voice signal detecting unit 27 is capable of detecting whether or not there is a voice signal on the telephone line in the call And outputs a voice detection signal.

The counter 28 counts the time at the same time as the operation of the voice signal detector 27 and outputs a predetermined signal to the microcomputer when the voice detection signal is inputted within a predetermined time.

When the control signal of the microcomputer according to the output signal of the counter 28 is input, the display unit 29 informs the user of a call request of an erroneous telephone call.

When the digital DBS viewer determines that the digital DBS viewer has viewed the contents displayed on the display unit 29 and then it is a call request for a normal call as a result of looking at the telephone, the initialization of the counter 28 and the display And inputting information for deleting the contents.

The public network 40 is a communication path between the faulty call request detecting device of the digital DBS receiver 20 and the RSMS 60. Since the public network 40 is basically a telephone communication path, The priority of the telephone line is always given to the telephone in case of emergency such as when the telephone is urgent.

In addition, the RSMS 60 controls and monitors subscriber access to the program and collects and stores usage information from the subscriber receiving side unit. Since the communication device 80 is commonly connected to a conventional wrong call request detecting device and a telephone line, a representative example of the communication device 80 is a telephone. For convenience of explanation, the communication device 80 is represented by a telephone 80 I will explain.

The operation of the conventional call request control device in the digital DBS receiver configured as above will be described with reference to FIG.

3 is a flowchart illustrating a conventional call request control method in a digital DBS receiver. 3, a conventional call request control method will be described on the assumption that a digital DBS viewer has requested a call to the telephone line as a result of examining the telephone line for information exchange regarding pay-per-view.

That is, when a call request is made on the telephone line, the line detecting unit 24 detects the call request and outputs a detection signal to the microcomputer 21. [ The microcomputer 21 receives the detection signal and outputs a control signal to the switching unit 25, the bidirectional communication unit 26, the voice signal detection unit 27, and the counter 28 to start operation simultaneously.

Accordingly, the switching unit 25 receiving the control signal grants the right to use the public network 40 to the communication device 80, and the two-way communication unit 26 performs a two-way communication on the telephone line. After all, information exchange can not be done.

In the first step S1, the voice signal detector 27 determines whether there is a voice signal in the telephone line with the call request, and if there is a voice signal as a result of the determination, the call request control process is terminated.

If it is determined in the second step S2 that there is no voice signal on the telephone line as a result of the determination in the first step S1, it is determined whether or not the time when the voice signal is absent exceeds the reference time R, As a result, if the reference time is not exceeded, the call request control process is terminated.

As a result of the determination in the second step S2 in the third step S3, when the time when the voice signal is absent exceeds the reference time, the digital DBS viewer is notified that the call request is erroneous.

That is, the counter 28 counts the time at the same time when the control signal is input from the microcomputer 21, and if the voice detection signal is not continuously inputted within the reference time, the counter 28 outputs a high signal to the microcomputer 21 And outputs a low signal to the microcomputer 21 when the voice detection signal is inputted within a predetermined time.

The microcomputer 21 receiving the low signal from the counter 28 does not output the control signal for driving the display unit 29 so that the display unit 29 does not operate. That is, a viewer who wants to exchange information becomes aware that the call request of the telephone is for a normal call, and therefore can not exchange information until the end of the call.

On the other hand, the microcomputer 21 receiving the high signal from the counter 29 outputs a control signal for instructing the driving of the display unit 29, and accordingly, the display unit 29 displays, The user is informed of the warning.

For example, the telephone receiver is now misplaced using the On-Screen Display (OSD) device of the digital DBS receiver 20. Check your phone, if you are on a normal call, enter XXXX. If the handset is misplaced, please put the handset right away.

If a wrong call request is not generated as a result of the determination after the viewer who has learned the warning in the fourth step S4 looks at the telephone 80 and determines whether a wrong call request has occurred, Lt; / RTI >

That is, when the user does not make a wrong call request, the user inputs information for initializing the counter 28 and stopping the operation of the display unit 29 through the keypad 30, Exchange of information regarding the viewing of the digital DBS paid program with the RSMS 60 can not be achieved, and the telephone conversation continues.

As a result of the determination in the fourth step S4 in the fifth step S5, if a wrong call request is generated, the viewer directly calls the call of the telephone 80. Eventually, information exchange becomes possible.

However, in the conventional call request control apparatus and method of the digital DBS receiver, the digital DBS viewer must directly listen to the telephone receiver in order to make a final judgment of an erroneous call request. In addition, There was an inconvenience that DBS viewers had to do.

Accordingly, it is an object of the present invention to provide convenience to a digital DBS viewer by eliminating the inconvenience as described above. When an attempt is made to exchange information on pay-per-view of a digital DBS through a telephone line, And automatically detects and displays the detected call request when it occurs, and a method thereof.

In order to accomplish the above object, a call request control apparatus includes a digital DBS receiver for exchanging information about paid viewing of a digital DBS with a service provider; A telephone sharing the telephone line with the digital DBS receiver; An RSMS for controlling and monitoring subscriber access to the program and collecting and storing usage information from the digital DBS receiver; And a public network as a communication path connecting the digital DBS receiver and the RSMS, the integrated system comprising: an erroneous call request detector for detecting an erroneous call request in the digital DBS receiver; And a display and automatic correcting unit for informing the telephone user of the erroneous call request from the telephone and correcting it automatically.

In the call request control method of the present invention configured as described above, when a digital DBS viewer examines a telephone line for exchanging information related to paid viewing, when a call request is made to the telephone line, A first step of terminating a call request control process when there is a voice signal as a result of the determination; If it is determined that the time when the voice signal does not exist exceeds the reference time in the case where there is no voice signal on the telephone line as a result of the determination in the first step, A second step of terminating the process; If it is determined in the second step that the time when no voice signal is present does not exceed the reference time, the digital DBS receiver generates a paging signal to forward the paging signal to the telephone Step 3; A fourth step of informing a telephone user of the telephone that the call signal is received that the call request is an erroneous call request; If the input of the telephone user is found as a result of the determination, it is determined whether there is an input indicating that the wrong call request is a call request for a normal call, step; And a sixth step of automatically shorting the call request to the wrong call request when the telephone user does not receive the input, as a result of the determination in the fifth step.

According to the present invention as described above, when a digital DBS paying viewer views a telephone line to exchange information on paid viewing, it is convenient to detect and display the wrong call request and correct it automatically when a wrong call request is made, It is possible to exchange information even in the case of a wrong call request, thereby facilitating viewing of a digital DBS pay program.

1 is a block diagram schematically showing a configuration of a digital DBS (Direct Broadcasting Service) system,

2 is a block diagram illustrating a conventional call request control apparatus in a digital DBS receiver,

3 is a flowchart showing a conventional call request control method in a digital DBS receiver,

4 is a block diagram illustrating a call request control apparatus according to the present invention.

5 is a flowchart illustrating a call request control method according to the present invention.

Description of the Related Art [0002]

10: Digital DBS receiver 100: Invalid call request detector

105: Microcomputer 110: Modem

115: smart card 120: line detector

125: first switching unit 130: first bidirectional communication unit

135: audio signal detection unit 140: counter

145: call signal generating unit 150: first conversion / inverse conversion unit

20: telephone 200: display and automatic correction unit

205: second conversion / inverse transformation unit 210:

215: display unit 220: keypad

225: second switching unit 230: second bidirectional communication unit

235: Voice signal input / output unit 30: Public network

40: Resource and subscriber management system T: Tip line

R: Ring line

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

4 is a block diagram illustrating a call request control apparatus according to the present invention. The call request control apparatus of the present invention shown in FIG. 4 includes a digital DBS receiver 10 for exchanging information about paid viewing of a digital DBS with a service provider; A telephone 20 sharing a telephone line with the digital DBS receiver 10; An RSMS 30 for controlling and monitoring subscriber access to the program and collecting and storing usage information from the digital DBS receiver 10; And a public network (40) as a communication path connecting the digital DBS receiver (10) and the RSMS (30), characterized in that the digital DBS receiver (10) A detection unit 100; And a display and automatic correction unit (200) for notifying the telephone user of the wrong call request at the telephone (2) and correcting it automatically.

The digital DBS receiver 10 includes the erroneous call request detector 100, the microcomputer 105, the modem 110 and the smart card 115, And a voice signal input / output unit 235. The voice signal input /

Here, the erroneous call request detection unit 100 includes a line detection unit 120; A first switching unit 125; A first bidirectional communication unit 130; A voice signal detection unit 135; A counter 140; A call signal generator 145; And a first conversion / inverse transformation unit 150.

Also, the display and automatic correction unit 200 includes a second conversion / inverse transformation unit 205; A microcomputer 210; A display unit 215; A keypad 220; A second switching unit 225; And a second bidirectional communication unit 230.

Meanwhile, the microcomputer 105 controls the entire digital DBS receiver 10, and the modem 110 can exchange information necessary for pay-per-view programs using the public network 40.

The smart card 115 gives permission to decrypt the encrypted data so that only the subscriber having the reception right can receive the data, and stores and provides the information on the fee-based viewing.

The line detector 120 detects a call request on the telephone line for information exchange and outputs a call request detection signal to the microcomputer 105.

The first switching unit 125 determines whether to give the telephone use authority of the telephone line to the telephone 20 according to the control signal of the microcomputer 105 based on the call request detection signal or a digital DBS receiver 10 ) To determine whether to give it.

The first bidirectional communication unit 130 allows the communication on the telephone line determined by the switching unit 125 to be smoothly performed in both directions and the voice signal detection unit 135 detects voice signals .

The counter 140 starts counting the time at the same time as the operation of the voice signal detector 135 and outputs a predetermined signal to the microcomputer 105 when the voice detection signal is not input within a predetermined time.

The call signal generating unit 145 generates a paging signal according to a control signal output from the microcomputer 105 when the counter 140 receives an input signal. The paging signal is a kind of control signal for allowing the telephone 20 to warn a wrong call request.

The first conversion / inverse transformation unit 150 converts the paging signal into a predetermined form for transmission to the telephone 20, or inversely converts an input signal from the telephone 20.

The second conversion / inverse transformation unit 205 of the telephone 20 receives and converts the converted call signal from the first conversion / inverse transformation unit 150, or converts the signal from the telephone 20 And outputs it to the first conversion / inverse transformation unit 150.

The microcomputer 210 controls the entire system of the telephone set 20. When the control signal output from the microcomputer 215 is inputted in response to the input of the inverted call signal, the display unit 215 displays an invalid call request Is displayed.

The keypad 220 is a response input means for inputting a response signal for notifying a telephone user of a warning and informing the user of a normal call.

The second switching unit 225 determines whether to give the use right of the telephone line to the telephone according to the response signal.

The second bidirectional communication unit 230 allows the conversation on the telephone line determined by the second switching unit 225 to be smoothly performed in both directions, and the voice signal input / output unit 235 outputs voice signals to / A representative example of which is a telephone receiver.

Here, the first and second bidirectional communication units 130 and 230 form a pair of two-wire type telephone lines and form one transmission medium. Therefore, the first and second bidirectional communication units 130 and 230 can not provide only one-way communication.

Methods for implementing bidirectional communication in the 2-wire line include a frequency division control method, a time division direction control method, and a hybrid trans direction division method.

In this case, since the frequency division control method allocates frequency bands different in rising and falling and separates and extracts the received 1W received signal by the modulation and demodulation using different frequencies and filters, the influence of signal crosstalk is small, There is a problem that the frequency is wider than the frequency (signal speed) by two times and the cost is high.

In the time division direction control method, the time is divided into two time zones in a so-called half-duplex manner and each time zone is used as a transmission line dedicated for ascending and descending. Since the signal is shortened to a time longer than half, It should be more than 2 times and delay occurs by the waiting time until signal transmission.

On the other hand, the hybrid trans direction division scheme completely eliminates a transmission signal to a reception port by using a hybrid transform and completely removes a reception signal to a transmission port, so that the signal speed is half the level of the two schemes, In practice, the hybrid trans direction segmentation method is the most widely used.

The operation and effect of the present invention will now be described with reference to FIGS. 1, 4 and 5.

The digital DBS receiver 10 selects and demodulates a coded channel desired by a viewer and demultiplexes the transport stream of the decoded channel to extract only audio / video data desired by the viewer.

The extracted audio / video data is decrypted, decrypted, and output to a television.

As shown in the following Table 1, the transport stream of the channel-decoded channel is composed of a program service stream, a data service stream, and an RSMS stream, and the RSMS stream is input to the smart card 115.

Channel decoded transport stream encryption viewers Contents of stream After channel decoding Program service stream ○ Legitimate viewers One video signal Input by transport stream demultiplexer Up to four audio signals Caption data Data service stream ○ Legitimate viewers Different types of data Input by transport stream demultiplexer RSMS data stream × All viewers Credential Management Message Input with smart card Entitlement Control Message Input with smart card Receiver command message Input with smart card

Here, the RSMS data input to the smart card 115 includes an Entitlement Management Message (EMM), an Entitlement Control Message (ECM), and a receiver command message (Receiver Command Message: hereinafter referred to as RCM).

The EMM provides digital DBS programs only to a subscriber equipped with a legitimate smart card 115, the ECM has the information necessary to recover the encrypted original signal, and the RCM is used for a specific receiver subscribed to the digital DBS Command.

The digital DBS program guide service informing the kind of the digital DBS program and the providing time is mainly provided as a subtitle during the viewing. Among the digital DBS program guide services, there is an information service for watching paid programs.

The paid program viewing refers to a viewing method using a pay per view fee scheme in which a subscriber only sees a program he / she wants to see and he / she only pays a fee corresponding to the program, and if he / she wants to watch a paid program, Should apply to the RSMS 30 for paid programs.

Accordingly, the RSMS 30 inputs information required to view a pay program to the subscriber's smart card 115.

If the fact that the viewer intends to watch the pay program is recorded in the smart card, the RCM commands a usage upload request and the digital DBS receiver 10 records the record usage of the smart card 135 And if the used amount exceeds 90%, the subscriber usage amount information stored in the smart card 135 should be sent to the RSMS 30.

Conventionally, the use of the telephone line connected to the public network 40 is always given to the telephone call for the above-mentioned information exchange, so that even when an incorrect call request occurs, the information between the DBS digital receiver 10 and the RSMS 30 The present invention can not only exchange information when the call is a normal telephone call request but also automatically correct the information when a call request of a wrong telephone is requested to exchange information. FIG. 5 is a flowchart illustrating a call request control method according to an embodiment of the present invention. Referring to FIG. 5, the call request control method of FIG. 5 is a method in which a digital DBS viewer views a telephone line It is assumed that there is a call request on the telephone line.

That is, if there is a call request, the line detector 120 detects it and outputs a detection signal to the microcomputer 105. The microcomputer 105 receives the detection signal from the line detector 120. The microcomputer 105 controls the switching unit 125, the bidirectional communication unit 130, the voice signal detector 135, .

In the first step S10, it is determined whether there is a voice signal in the telephone line having the call request, and if there is a voice signal as a result of the determination, the call request control process is terminated.

As a result of the determination in the first step (S10) in the second step (S20), if there is no voice signal on the telephone line, it is determined whether or not the time without voice signal exceeds the reference time, If the time has not been exceeded, the call request control process is terminated.

If it is determined in the third step S30 that the absence of the voice signal does not exceed the reference time as a result of the determination in the second step S20, the digital DBS receiver performs a call And transmits the signal to the telephone.

That is, the counter 165 counts the time at the same time when the control signal is input from the microcomputer 130, and outputs a high signal to the microcomputer 105, And outputs a low signal to the microcomputer 105 when the voice detection signal is inputted within a predetermined time.

Since the microcomputer 105 receiving the low signal from the counter 140 does not output the control signal for instructing the driving of the paging signal generating unit 145, the paging signal generating unit 145 does not operate . A viewer who wants to exchange information becomes aware that the call request of the telephone is for a normal call, so that it is not possible to exchange information until the end of the call.

On the other hand, the microcomputer 105 receiving the high signal from the counter 140 outputs a control signal for instructing driving of the call signal generating unit 145, and accordingly, the call signal generating unit 145 generates a call signal . Then, the call signal is converted into a predetermined form by the conversion / reverse unit 150, and then output to the telephone set 200.

In the fourth step S40, the phone that receives the paging signal warns the telephone user that the call request is an erroneous call request.

That is, the changed calling signal is input to the converting / inverting unit 205 of the telephone set 200 and then inversely converted and then input to the microcomputer. The control signal output from the microcomputer 215 according to the input of the inverse- Upon input to the display unit 215, a content for warning a wrong call request is displayed to the telephone user.

For example, the telephone receiver is now misplaced. Check your phone and if you are on a normal call, use the keypad to enter XXXX.

If it is determined in step S50 that there is an input indicating that the input of the telephone user, that is, the wrong call request is a call request for a normal call, in the fifth step S50, The request control process is terminated.

That is, when the telephone user inputs a response signal such as XXXX, the response signal is input to the microcomputer 210. [ The response signal output from the microcomputer 210 is output to the digital DBS receiver 10 to initialize the counter 140 and stop the operation of the call signal generator 145, And the RSMS 40 can not be exchanged, and the telephone conversation continues.

If it is determined in the fifth step S50 in the sixth step S60 that there is no input of a telephone user, the telephone automatically makes a call drop of the erroneous call request.

That is, when the user does not input XXXX, the microcomputer 210 controls the switching unit 225 to change the call request state of the telephone to the HOOK-ON state, To the receiver (10).

Thus, the digital DBS receiver 10 controls the first switching unit to exchange information.

As described above, when a paying viewer of a digital DBS watches a telephone line to exchange information about paid viewing, if a wrong call request is detected, it is convenient to detect and display it and automatically correct it, It is advantageous to facilitate the viewing of digital DBS paid programs by enabling information exchange.

Claims (4)

A digital DBS receiver (10) for exchanging information about paid viewing of the digital DBS with the service provider; A telephone 20 sharing a telephone line with the digital DBS receiver 10; An RSMS 30 for controlling and monitoring subscriber access to the program and collecting and storing usage information from the digital DBS receiver 10; And a public network (40) as a communication path connecting the digital DBS receiver (10) and the RSMS (30), characterized in that the digital DBS receiver (10) A detection unit 100; And a display and automatic correction unit (200) for informing the telephone user of the incorrect call request from the telephone (20) and automatically correcting the wrong call request. The method of claim 1, wherein the false call request detector (100) comprises: a line detector (120) detecting a call request on a telephone line connected to the public network (40) and outputting a call request detection signal; A first switching unit (125) for determining whether to grant the use authority of the telephone line to the telephone (20) or the digital DBS receiver (10) for information exchange by the call request detection signal; A first bidirectional communication unit (130) for making communication on the telephone line determined by the first switching unit (125) smooth in both directions; A voice signal detector 135 for outputting a voice detection signal according to whether a voice signal is present on the telephone line; A counter 140 for counting a time at the same time as the operation of the voice signal detector 135 and outputting a predetermined signal according to whether or not the voice detection signal is input within a predetermined time; A call signal generator 145 for generating a call signal according to an input signal from the counter 140; And a first conversion / inverse transformation unit (150) for converting the call signal into a predetermined form for transmission to the telephone set (20) and further inversely converting a signal from the telephone set (20) Call request control device. The digital DBS receiver (10) according to claim 1, wherein the display and automatic correction unit (200) comprises a second conversion / inverse transformation unit (31) for inversely transforming an input signal from the digital DBS receiver (10) 205; A microcomputer 215 for controlling the entire telephone system; A display unit 215 for displaying contents warning a wrong call request to the telephone user according to an input signal from the second conversion / inverse transformation unit 205; A keypad (220) for inputting a response signal indicating that the telephone user is proceeding a normal call with the warning contents; A second switching unit (225) for switching a call request to a call arc according to the response signal; And a second bidirectional communication unit (230) for making the conversation on the telephone line determined by the second switching unit (225) smooth in both directions. When a digital DBS viewer examines a telephone line for exchanging information concerning pay-per-view, it is determined whether there is a voice signal in the telephone line in which the call is requested when there is a call request in the telephone line, A first step (S10) of terminating the call request control process when there is a voice signal; If it is determined that the time when the voice signal is absent does not exceed the reference time in the absence of the voice signal on the telephone line as a result of the determination in the first step S10, A second step S20 of terminating the call request control process; If it is determined in the second step S20 that the absence of the voice signal does not exceed the reference time, the digital DBS receiver generates a paging signal so as to warn a wrong call request from the telephone, (S30); A fourth step (S40) of alerting the telephone user who receives the paging signal that the call request is an erroneous call request; If the input of the telephone user is found as a result of the determination, it is determined whether there is an input indicating that the wrong call request is a call request for a normal call, Step S50; And a sixth step (S60) of automatically short-circuiting the wrong call request if the telephone user does not input a result of the determination in the fifth step (S50) Way.