KR20090091443A

KR20090091443A - Spam calls prevention system and method thereof

Info

Publication number: KR20090091443A
Application number: KR1020080016702A
Authority: KR
Inventors: 박승준; 이종혁
Original assignee: 박승준; 이종혁
Priority date: 2008-02-25
Filing date: 2008-02-25
Publication date: 2009-08-28

Abstract

Disclosed are a system and method for preventing a spam call, which can perform a spam call filtering process to prevent a spam call or a spam text message. To this end, the present invention provides a system and method for preventing spam calls, including a comparator, a filter, and a controller for controlling the comparator and the filter. By using the system and method for preventing spam calls according to the present invention, it is possible to simultaneously prevent spam calls by telemarketers as well as one-ring spam calls of the automatic telephone call system through a question-and-answer spam call filtering process. In addition, it provides a system for preventing spam calls that can prevent the second victim to occur in advance by managing the filtered spam phone number separately provided to the public.

Description

Spam call prevention system and its method {SPAM CALLS PREVENTION SYSTEM AND METHOD THEREOF}

The present invention relates to a system and method for preventing spam calls. More particularly, the present invention relates to a system for preventing spam calls, in which a filtering process is performed on a caller to effectively determine a one-ring spam call or a text message through a telemarketer or a mechanical system. And to a method thereof.

The communication field is rapidly developing due to the growth of information technology. As a result, communication terminals such as landlines, mobile phones, PDAs, and the like are widely used, and various information is currently being exchanged between individuals.

However, while there is an advantage that can exchange various information with each other through a communication terminal, the spam that is randomly sent a character for advertisement or promotion to a large number of communication terminal holders by using the reverse.

In general, spam is sent through a landline, computer, communication terminal, or Automatic Calling System (ACS) .In general, only the return phone number of the terminal to be answered after the bell rings once or twice It is classified into one-ring call that is left behind and broken, and voice call including recorded voice contents. In addition, the telemarketers randomly call the communication terminal holder to provide promotional information.

The communication terminal holders are not only troubled with their work, but are also under a lot of stress.

Efforts have been made to prevent spam calls from advertising circles or telemarketers in advance.

For example, Korean Unexamined Patent Publication No. 10-2007-0063974 (published June 20, 2007) discloses a method of blocking a one-ring spam call in a mobile phone.

It counts the time from receiving the universal page message to notify that the call has been received from the base station until receiving the call termination message to inform that the call termination is completed, and compares it with the first threshold time that is set in advance. The present invention relates to a spam call blocking method for determining whether a spam call is based on a result. However, this is simply to determine whether the spam according to the incoming time of the missed call by the one-ring, only the one-ring spam calls can be filtered, there is a problem that can not be filtered when the threshold time is longer, and also to the telemarketer There is a problem that the incoming spam calls are placed in a defenseless state.

In addition, Korean Patent Publication No. 10-2007-0020829 (published February 22, 2007) discloses a "telemarketing blocking terminal, system and method".

It includes a switching server for controlling the telemarketing blocking service when a call is received to the customer's telephone number; Guide sound storage unit for storing the warning voice not to answer the marketing call; A white list storage unit for storing a list of phone numbers to be called without blocking the corresponding customer; And if the outgoing call number is in the white list under the control of the switching server, the call is immediately connected. If the outgoing call number is not in the white list, the caller transmits a warning sound of the guide sound storage unit and calls from the caller's telephone. The present invention relates to a telemarketing blocking system comprising a service server for connecting a call to a receiver's telephone when a signal to be connected is received.

However, this technology is designed to block spam calls in advance by sending a warning voice to a caller (for example, a telemarketer) that calls a phone number that is not stored in the customer's white list. If you try to connect to the call with the receiver ignored, there is a problem that the customer has no choice but to be exposed to the telemarketer's spam call unprotected. Even if the telemarketer and the customer's call time are stored as a report, even if the phone number is stored as a report, if the customer tries to call the customer again with another phone number, the customer will be exposed to the spam call unprotected. .

In addition, Korean Patent Application Publication No. 10-2007-0100993 (published October 16, 2007) discloses a "spam detection apparatus and its detection method".

This includes: i) whether a call arrival / fail signal of a voice call is received for a predetermined reference time (about 3 to 4 seconds); Has the same answering terminal identification information, each voice call is received for 5 to 10 minutes, and iii) a spam call is made based on a certain criterion, such as when the recognized voice content includes a word for spam voice call judgment. It relates to a device for detecting. However, this technology also has the advantage of preventing in advance the wonling spam calls through the mechanical system, but there is a problem that the receiver is unprotected for spam calls by telemarketers.

As such, the conventional spam call blocking technology can block the spam call through the machine system to some extent, but there is a problem that the spam call through the person, that is, the spam call through the telemarketer, is still defenseless. There is an urgent need for an anti-spam technology that can prevent and block not only one ring spam calls by the system but also spam calls by telemarketers.

Accordingly, a first object of the present invention is to provide a system for preventing spam calls by performing a spam call filtering process to prevent advertising spam calls by telemarketers as well as one-ring spam calls of an automatic telephone call system. .

It is a second object of the present invention to provide a method for preventing the above-mentioned spam call by using a method of performing a question-and-answer spam call filtering process.

In order to achieve the first object of the present invention described above, the present invention includes a comparison unit for comparing whether the caller's transmission telephone number and the phone number stored in the receiver's telephone number database; A filtering unit which performs filtering to determine whether the transmission telephone number is a spam telephone when the comparison result does not match; And a control unit for connecting the transmission phone that matches the comparison result of the comparison unit and the transmission phone that is determined to be not the spam phone to the receiver, to the recipient.

In addition, in order to achieve the second object of the present invention, the present invention comprises the steps of comparing the sender's transmission telephone telephone number with the telephone number stored in the receiver's telephone number database; Filtering to determine whether the transmission telephone number is a spam telephone when the comparison result does not match; And connecting the transmission call that matches the comparison result of the comparison unit and the transmission call that is determined to be not the spam call to the receiver to the recipient.

By using the system and method for preventing spam calls according to the present invention, it is possible to simultaneously prevent spam calls by telemarketers as well as one-ring spam calls of an automatic telephone call system through a question-and-answer spam call filtering process.

In addition, it provides a system for preventing spam calls that can prevent the second victim to occur in advance by managing the filtered spam telephone number separately and providing it to the public.

In addition, by enabling the download of the telephone number stored in the telephone number database to the communication terminal of the receiver, it is possible to eliminate the inconvenience of re-entering the telephone numbers of acquaintances due to the loss of the communication terminal.

Furthermore, the current mobile phone billing system is to be billed only to the caller, but in the future, the billing scheme is considered for not only the caller but also the receiver. When the billing system is changed to be billed to the receiver, the receiver selectively selects an incoming call. The desire to receive will be greater. Accordingly, the present invention is expected to satisfy this need.

In addition to the mobile telecom services market centered on SKT, KTF, and LGT, which are mobile network operators (MNO), MVNO (Mobile Virtual Network Operator) will be allowed.

In addition, the recently discussed two-way tariff system should be settled once a month between the mobile network operator and the virtual mobile network operator when entering the mobile telecommunication service market.

It is inevitable that the settlement of incoming and outgoing charges made by mobile network operators will change from simple structure to complex structure with settlement between mobile network operators, virtual mobile network operators, and mobile network operators.

In the background of the implementation of the two-way communication plan in the United States and Canada, the receiver and the receiver charge the charges between the calling network and the receiving network. The interactive billing system will be implemented in earnest with the permission of the virtual mobile network operator.

However, if the two-way billing system is implemented, the unwanted spam calls and the rates of elementary, middle and high school students or the elderly may be higher than the current one-way rate plan.

Accordingly, the present invention relates to a system and a method for preventing a telephone call, which can block an unwanted call in advance through a telephone number database of a receiver, a receiver rejection database, and a filtering process.

Hereinafter, a system and method for preventing spam calls according to an embodiment of the present invention with reference to the drawings in detail.

1 is a schematic flowchart illustrating a system and method for preventing spam calls according to an embodiment of the present invention.

Referring to FIG. 1, first, a receiver 200 receiving a caller's call, a caller 100 sending a call to the receiver 200, and whether the caller receives a call from the caller 100 and calls it a spam call. After determining the, the anti-spam system 300 to connect to the receiver 200 or to transmit the caller information (for example, call number, receiving time, etc.) of the caller 100 to the receiver 200 in a text message; This can be.

The sender 100 includes an automatic telephone calling system, a telemarketer, and a communication terminal of a general person who have acquaintances with the receiver 200 for sending a spam call to the receiver 200.

The call origination of the caller 100 may include a text message as well as a voice call.

The receiver 200 is a communication terminal including a mobile phone, a PDA, etc. capable of receiving a call from the caller 100. In addition, it may be a computer capable of making Internet calls.

Hereinafter, each component will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic block diagram illustrating a system for preventing spam calls according to an embodiment of the present invention.

2, the anti-spam system 300 according to the present embodiment includes a comparator 320, a filter 330, and a controller 350, and optionally, a receiver 310 and a memory 340. ) May be further included.

The receiver 310 receives a call transmitted from the caller 100. Such a receiving unit may be installed in the terminal when the system according to the present invention is embedded in the terminal in a program form, or when the anti-spam system according to the present invention is implemented as a separate system outside the terminal, the receiver may be installed in an external system. Can be.

At the same time as receiving the transmission telephone call from the caller 100 receives the caller information (phone number, reception time) of the caller 100. In addition, the receiving unit 310 may receive a text message in addition to the caller 100.

The comparison unit 320 compares whether the telephone number of the caller 100 transmitted to the receiver 310 matches the telephone number of the receiver 200 stored in the receiver 200 telephone number database DB. This is a process of primarily determining whether the caller 100's phone is an acquaintance's phone or an advertisement spam call stored in the phone number database of the receiver 100.

The filtering unit 330 performs a filtering process to determine whether the telephone number of the caller 100 transmitted through the receiving unit 310 is a spam call. This is a process of secondly determining whether the call is a spam call when it is determined that the call is not the call of an acquaintance stored in the telephone number database of the receiver 100 through the comparison unit 320.

In more detail, the filtering process of the filtering unit 330 is performed when the phone number of the caller 100 does not match the phone number stored in the phone number database of the receiver 200 as a result of the comparison of the comparison unit 320. To perform. This is to determine whether the caller is required for the receiver 200 or the spam phone among the phone numbers of the caller 100 that does not match the phone number stored in the receiver 200 telephone number database.

If, in the case of a one-ring spam or two-ring spam call through the automatic telephone call system (ACS) that is cut off before the filtering process of the filtering unit 330 starts, the filtering unit 330 If it matches the phone number stored in the phone number database of the receiver 200 according to the comparison result through the comparison unit 320 under the control of the control unit to be described later without the filtering process, the received information (phone number, The reception time is transmitted to the receiver 200, and if it does not match, the receiver (notifying the fact that a spam call including the reception information (phone number, reception time) of the caller 100 has been placed under the control of a controller to be described later). 200 may be transmitted through a message or the like.

For example, the message transmitted to the receiver 200 may transmit the received information of the sender 100 to the receiver 200 by setting the subject of the message to 'spam'. In addition, it is irrelevant to use any phrase (for example, an emoticon, etc.) in the subject or message content as long as the receiver 200 can recognize that a spam call has been received. In addition, the message may be sent to the spam letter.

The filtering process is preferably a question and answer that can be answered by the caller 100 in letters or numbers. For example, the caller 100 may be asked to enter a specific number or letter. This may include the name of the receiver 200, the name of the sender 100, a simple calculation result (additional and subtractive). In addition, any question-and-answer type that can be input by an input means such as a keypad or the like of a communication terminal of a sender such as letters or numbers may be used.

If a telephone is randomly sent by a system such as ACS, for example, a simple question, "what is 1 + 3?" Will not be able to answer it, and it will also give extremely limited information about the recipient (e.g. For example, a telemarketer that only has a phone number will not be able to enter the appropriate answer even for a simple question, "Enter the first two letters of the recipient's name." As such, if the question is not answered properly, it is treated as a spam call or a text message.

The question and answer expression may allow the receiver 200 to set arbitrarily. This question and answer is to be sent to the sender 100 in the form of automatic announcements.

In more detail, if the telephone number of the caller 100 does not correspond to the telephone number database of the receiver 200 through the comparison unit 320, the filtering unit 330 performs the filtering process. Accordingly, when the filtering unit 330 transmits the question-and-answer question set to the caller 100, the caller 100 transmits the answer to the question through the communication terminal of the caller 100. After determining whether the transmitted answer is the correct answer, the control unit described later is transmitted to the receiver 200 by telephone connection or a message according to the result.

The memory unit 340, which may be optionally included, includes a first memory unit 341 storing the telephone number database of the receiver 200 to be compared with the telephone number of the caller 100 in the comparison unit 320. Include.

In addition, the memory unit 340 may further include a third memory unit 343 for storing a caller's telephone number and a reception time determined as a spam call through the filtering process of the filtering unit 330.

The telephone number database of the receiver 200 stored in the first memory unit 341 of the memory unit 340 may be updated by the receiver 200 at any time. In addition, when the receiver loses the terminal in which the existing telephone number database is stored, the telephone number database of the first memory unit 341 may be downloaded to the communication terminal of the receiver 200.

In addition, the memory unit 340 may further include a second memory unit 342 that stores a receiver's unsubscribed phone number database of the receiver that the receiver wants to reject. This is primarily to compare whether the first memory unit 341 matches or not, and if there is a match, secondly to compare whether the receiver wants to reject the reception.

In more detail, even if it matches the telephone number database of the receiver stored in the first memory unit 341, the receiver may be a telephone number that the receiver is reluctant to receive. The caller's phone that matches the first memory unit 341 is stored in the second memory unit 342 after storing the unsubscribed phone number database in the second memory unit 342 in order to filter whether or not the received caller's phone number is a phone number that is not intended to be received. The reason is to compare the numbers with the second memory unit 342 in a secondary manner so that the receiver receives only the desired call.

In addition, the receiver's rejected phone number database stored in the second memory unit 342 of the memory unit 340 may be updated by the receiver 200 at any time.

And the anti-spam system according to the present embodiment includes a control unit 350.

The controller 350 controls the receiver 310, the comparator 320, the filter 330, and the memory 340 to be interlocked with each other.

In more detail, the control unit 350 transmits the phone number of the caller 100 transmitted to the receiver 310 to the comparison unit 320, and the phone number and receiver (received) of the received caller 100. The phone number stored in the phone number database of 200 is controlled to be compared by the comparison unit 320. The control unit 350 transmits the call of the caller 100 to the callee 200 when the caller 100 of the caller 100 matches the call number stored in the caller database of the caller 100. Connect

If the comparison result of the comparison unit 320, if the phone number of the caller 100 does not match the phone number stored in the phone number database of the receiver 200, the caller 100 by controlling the filtering unit 330 It is possible to determine whether or not the telephone number is a spam call.

When the phone number of the caller 100 is determined to be a spam call through the filtering process of the filtering unit 330, the caller 100 receives the caller 100 without connecting the call to the receiver 200 under the control of the control unit 350. Information (calling number, reception time) may be stored in the third memory unit 343 of the memory unit 340. In addition, the reception information of the caller 100 stored in the third memory unit 343 may be transmitted to the receiver 200 as a message. The message transmission may be a general message indicating a calling number or the like, or may be transmitted as a text message.

In addition, the controller 350 controls the receiver 200 to update the telephone number database of the receiver 200 stored in the first memory 341 at any time. In addition, the telephone number database of the receiver 200 stored in the first memory unit 341 may be controlled to be transmitted to the communication terminal of the receiver 200.

The telephone number data transmission between the memory unit 340 and the communication terminal of the receiver 200 may use a general data cable.

In addition, the control unit 350 controls the comparison unit 320 to compare whether the first received caller's telephone number matches the recipient's telephone number database stored in the first memory unit 341. If there is a match, it is possible to compare whether or not a match with the unsubscribed telephone number database of the recipient who wants to reject the reception stored in the second memory unit 342 is secondary.

If the caller's telephone number received through the comparison unit 320 under the control of the control unit 350 does not match the rejection telephone number database stored in the second memory unit 342, the caller 100 telephone number is dialed. You can control the connection and block callers' calls if they match.

When the control unit 350 receives the text message from the sender 100 in the receiving unit 200 at all times, the control unit 350 does not perform the filtering process of the filtering unit 330 and receives the comparison result through the comparing unit 320 to the receiver 200. Send it as a message.

In more detail, when a text message is received from the caller 200, the control unit 350 transmits the text message telephone number of the caller 200 received through the comparison unit 320 and the first memory unit 341. The telephone number database of the stored receiver 200 is matched. As a result, when the text message telephone number of the caller 100 matches the phone number stored in the telephone number database of the receiver 200, the text message of the caller 100 is transmitted to the receiver 200. If it does not match, the text message of the sender 100 is transmitted to the spam letter of the receiver 200.

If the text message telephone number of the sender matches the first memory unit 341 as a result of the comparison of the comparison unit 320, the control unit 350 rejects the receiver number database of the receiver. The comparison with the second memory unit 342 stored therein may be secondly compared and controlled. As a result, when the text message telephone number of the sender 100 matches the second memory unit 342, the text message of the sender 100 is transmitted to the spam text box of the receiver 200. If not, the text message of the sender 100 is transmitted to the receiver 200.

The system for preventing spam calls of the present invention is transmitted through a process together with transmission at the time of transmission (call connection or rejection and transmission as a message) to the receiver through the comparison unit 320 or the filtering unit 330. May be labeled to be differentiated using a phrase or a shape so that the receiver can easily recognize it. For example, emoticons.

In more detail, in the case where the sender's telephone number received by the control unit 350 is transmitted to the receiver through the first memory unit 341, the first memory unit 341 and the second memory unit ( It may be marked differently (emoticons) depending on whether the data is transmitted through the 342 and the first memory 341 and the filtering unit 330. The notation method may be any notation method as long as it is a notation method capable of recognizing which process the receiver has received.

The system for preventing spam calls of the present invention transmits the caller's phone number determined as a spam call to the receiver 200 through the comparison unit 320 or the filtering unit 330 under the control of the control unit 350. According to the selection, the phone number of the caller who received the spam call is sent to the spam call management unit (for example, an agency collecting information about the spam call such as the Korea Information Security Agency (KISA)). You can also send a notification. As the spam phone numbers collected as described above are transmitted to the mobile communication service provider (MNO), they can be used to build a common spam list among mobile communication service providers.

And the present invention provides a method for preventing spam calls using a system for preventing spam calls. Hereinafter, descriptions of parts common to those of the above-described anti-spam system will be omitted or abbreviated.

3 is a schematic flowchart illustrating a spam telephone prevention method according to an embodiment of the present invention.

Referring to Fig. 3, comparing the sender's forwarding telephone telephone number with the telephone number stored in the receiver's telephone number database (S3); If the comparison result of the comparison step (S3) does not match the caller's phone number stored in the receiver's phone number database performs a filtering process to the caller to determine whether the caller's phone number is a spam call Step S4; And controlling the steps to be linked to each other so as to control the caller's call to be connected to the caller when the caller's phone number matches the phone number stored in the caller's phone number database (S6).

In addition, storing the telephone number database of the receiver (S1); The method may further include receiving an incoming call from the caller (S2).

Referring to FIG. 3, the method for preventing spam calls according to an embodiment of the present invention includes storing a caller's telephone number and a reception time when determining as a spam call through a filtering process for the sender (S4). ) May be further included.

Referring to FIG. 3, the method for preventing spam calls using the system for preventing spam calls according to an embodiment of the present invention receives the sender received information upon determining as a spam call through performing a filtering process to the sender (S4). The method may further include a step S7 of controlling to transmit the message to the user.

The filtering step (S4) is preferably a question and answer that the caller can answer with letters or numbers that can be input to their communication terminal.

Spam call prevention method according to an embodiment of the present invention may further comprise the step of allowing the receiver to set the question and answer in the performing the filtering step (S4).

The method for preventing spam calls according to an embodiment of the present invention may further include storing a receiver's unsubscribed telephone number database of a receiver that the receiver wants to reject.

And comparing the caller's telephone number with the receiver's unsubscribed telephone number database if the caller's telephone number received in the comparison step (S3) matches the receiver's telephone number database. It may include.

The method for preventing spam calls according to an embodiment of the present invention further includes the step of storing the receiver's telephone number database (S1) and the receiver frequently updating the database of storing the receiver's rejected telephone number database. can do.

The method may further include downloading the database of the step S1 of storing the receiver's telephone number database to the receiver's communication terminal.

4 is a schematic flowchart for explaining a method for preventing spam calls according to another embodiment of the present invention.

Referring to Figure 4, the prevention method according to an embodiment of the present invention compares the received caller's text message phone number and the phone number stored in the recipient's telephone number database and the recipient's rejected telephone number database (S40).

Then, the steps S10 to S40 are controlled to be linked to each other so that the sender's text message telephone number does not match the receiver's telephone number database or the receiver's telephone number database and the receiver's rejected telephone number database. If it matches, the sender's text message is sent to the recipient's spam mailbox (S50) and if the recipient's phone number database matches the recipient's unsubscribed phone number database, the sender's text message is sent to the recipient. It includes a step (S60).

Also optionally, storing the receiver's telephone number database (S10); Storing the unsubscribed telephone number database of the receiver (S20); The method may further include receiving a text message from the sender (S30).

Another embodiment of the present invention shows a case where a text message is received, not a telephone, and when a text message is received, the filtering process is omitted and the sender's text message is connected to the receiver according to the result of the comparison step. Or send it to spam.

5 is a flowchart showing in detail to explain a method for preventing spam calls according to an embodiment of the present invention.

As described above, the flow of the method for preventing spam calls according to an embodiment of the present invention is as follows.

Referring to FIG. 4, first, while a receiver's telephone number database is updated by a receiver, a call received from a caller is received (S100). The received caller's telephone number is compared with a previously stored receiver's telephone number database (S200).

If the comparison result is "Yes", the telephone is directly connected to the receiver (S300). If the comparison result is "No", the filtering process is performed to determine whether the caller's telephone is a spam telephone (S400). (The filtering process transmits a preset question and answer to the sender as described above.)

After comparing (S500) whether the caller's answer to the question through the filtering process matches the correct answer, if the comparison result is "Yes", the call is directly connected to the receiver (S300), and the comparison result is "No" If the incoming call is considered a spam call and ends the call received from the sender (S600). After terminating the outgoing call determined as the spam call, the receiving information of the caller is stored (S700).

The received information of the stored sender is transmitted to the receiver as a text (S800).

While the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

1 is a schematic flowchart for explaining a system and a method for preventing a spam call according to an embodiment of the present invention.

Figure 2 is a schematic block diagram illustrating a spam call prevention system according to an embodiment of the present invention.

3 is a schematic flowchart illustrating a prevention method using an anti-spam system according to an embodiment of the present invention.

Figure 4 is a schematic flowchart illustrating a prevention method using a spam call prevention system according to another embodiment of the present invention.

Figure 5 is a flow chart shown in detail to explain the prevention method using a spam call prevention system according to an embodiment of the present invention.

Brief description of the main parts of the drawing

310: receiver 320: comparator

330: filtering unit 340: memory unit

350: control unit

Claims

A comparison unit for comparing whether the sender's transmission telephone number matches a telephone number stored in the receiver's telephone number database;

A filtering unit which performs filtering to determine whether the transmission telephone number is a spam telephone when the comparison result does not match; And

And a control unit which connects the transmission phone that matches the comparison result of the comparison unit and the transmission phone that is determined to be not the spam phone to the recipient.

The system of claim 1, wherein the filtering is performed in a question-and-answer manner.

The system of claim 2, wherein the question and answer of the question and answer type is set by the receiver.

The method of claim 1, wherein the control unit

And a matching transmission telephone and a transmission telephone determined to be not spam as a result of the filtering according to the comparison result of the comparing unit, to the receiver in a manner that can be distinguished by the receiver.

The method of claim 1, wherein the control unit

And a transmission telephone that does not match according to the comparison result of the comparison unit and the transmission telephone determined to be spam as a result of the filtering is transmitted to the spam telephone management unit.

The method of claim 1, wherein the control unit

The spam call prevention system, characterized in that for transmitting a spam call reception information including the phone number and the reception time of the transmission call is determined by the filtering unit to the recipient as a text or voice message.

The method of claim 1,

A receiving unit for receiving the transmission telephone; And

A first memory unit in which the telephone number database of the receiver compared in the comparison unit is stored, a second memory unit in which a reception telephone number database in which the receiver intends to reject reception among telephone numbers stored in the first memory unit is stored, and the And a memory unit having a third memory unit for storing spam call reception information including a phone number and a reception time of the caller identified as a spam call through the filtering unit.

The method of claim 7, wherein the comparison unit

After comparing whether the sender's forwarding telephone number matches the recipient's telephone number database stored in the first memory unit, and then the sender's forwarding telephone number determined to be matched of the recipient stored in the second memory unit; Further compare the phone number in the unsubscribed phone number database,

The control unit

And if the telephone number of the rejected telephone number database stored in the second memory unit and the sender's transmission telephone number do not match, connecting the caller's telephone to the receiver.

The method of claim 7, wherein

The telephone number database of the first memory unit and the second memory unit is stored by the receiver, and the telephone number database stored in the first memory unit is downloaded to the terminal of the receiver.

A comparison unit comparing the sender's transmission text message phone number with a phone number stored in the receiver's phone number database;

Receiving of a receiver to which the recipient wants to reject the reception among the first memory unit storing the telephone number database of the receiver to be compared with the text message telephone number of the caller in the comparison unit, and the telephone number of the receiver stored in the first memory unit A memory section having a second memory section for storing a rejected telephone number database; And

And a control unit for transmitting a text message of the caller to the receiver when the caller's text message telephone number matches the phone number of the first memory unit and does not match the telephone number of the second memory unit.

Comparing the sender's forwarding telephone number with a telephone number stored in the receiver's telephone number database;

A filtering step of performing filtering to determine whether the transmission telephone number is a spam telephone when the comparison result does not match; And

And connecting the transmission call that matches the comparison result of the comparison unit and the transmission call that is determined to be not the spam call to the recipient.

The method of claim 11,

The filtering method is characterized in that the anti-spam phone call is performed in a question and answer.

The method of claim 12,

The question and answer is a method for preventing spam calls, characterized in that set by the recipient.

The method of claim 11,

And comparing the caller's telephone number with the receiver's unsubscribed telephone number database if the caller's telephone number received matches the receiver's telephone number database. How to prevent spam calls.

The method of claim 11,

Storing spam call reception information including a caller's telephone number and a reception time, and transmitting the spam call reception information to the receiver as a voice or text message when it is determined that the call is spam. How to prevent spam calls.

A comparison step of comparing the sender's transmission text message telephone number with a telephone number stored in the receiver's telephone number database;

And sending the sender's text message to the recipient if the sender's text message phone number matches the phone number stored in the recipient's phone number database and does not match the recipient's unsubscribed phone number database. How to prevent phone calls.