KR101015022B1 - call processing method and phone for preventing a spam call - Google Patents

Abstract

A call processing method and a telephone for blocking spam calls are disclosed. The method includes measuring, by the network device receiving a call setup signal requesting call setup with a called terminal, a duration of an incoming call; And providing, by the network device, information on the calling telephone number of the call setup signal and information corresponding to the duration to the user of the called terminal. Therefore, there is an effect that can protect the user from damage caused by various phishing or unnecessary phone calls.

Description

Call processing method and phone for preventing a spam call}

TECHNICAL FIELD The present invention relates to spam call blocking, and more particularly, but not exclusively, to a call processing method and a telephone for blocking spam calls.

Due to the rapid spread of the Internet, the development of Internet-related technologies, and demands from users for various services, the Internet Protocol (IP) network is dramatically developing in terms of performance and services. As a result, demand for more diverse services continues to emerge in the market.

One of the requirements, voice transmission using the IP network has become a big role of the IP network along with data transmission, and accordingly, the demand for various voice transmission functions is increasing.

One such technology that has emerged due to the above-mentioned demands and the development of IP technology is the voice over IP (Voice over IP) telephone. The VoIP is a technology that converts voice data into an Internet protocol data packet and transmits and receives between a transmitter and a receiver, thereby enabling a user's telephone conversation. The voice data packet is transmitted and received between users through the Internet. Therefore, the telephone system can take advantage of the Internet.

For example, such a VoIP technology has the advantage that several people can use the network at the same time, there is an advantage that the scalability is superior to the existing telephone. In addition, there is an advantage that the charge is cheaper than the existing phone.

However, in the case of the VoIP as described above, there is a problem in that it is difficult to block spam calls as in the conventional telephone system.

In addition, a method for effectively coping with spam calls in wired and mobile communication networks is also required.

The present invention is to solve the above problems, an object of the present invention is to provide a call processing method and phone for blocking spam calls.

In order to achieve the above technical problem, an aspect of the present invention provides a network device comprising: measuring a duration of an incoming call by a network device receiving a call setup signal requesting call setup with a called terminal; And initiating an operation of transmitting the call setup signal to the called terminal when the duration is longer than a predetermined period.

Another aspect of the present invention to achieve the above technical problem is the step of displaying the number of ringing according to the incoming call and the outgoing telephone number of the incoming call; Requesting spam determination information for the outgoing telephone number to a server according to a request of the user who viewed the displayed result; And receiving spam determination information from the server and providing the spam determination information to the receiver.

Another aspect of the present invention to achieve the above technical problem is a display unit for displaying the number of rings and the outgoing telephone number of the incoming call according to the incoming call; And a sending / receiving unit for requesting spam determination information for the outgoing telephone number to the server and receiving spam determination information from the server according to a request of the user who has viewed the displayed result.

Another aspect of the present invention to achieve the above technical problem is the step of measuring the duration of the incoming call by the network device receiving the call setup signal requesting the call setup with the called terminal; And providing, by the network device, information on an outgoing telephone number of the call setup signal and information corresponding to the duration to a user of the called terminal.

Another aspect of the present invention to achieve the above technical problem is the step of measuring the duration of the incoming call by the network device receiving the call setup signal requesting the call setup with the called terminal; If the duration is less than a preset threshold, registering, by the network device, a mapping relationship between an outgoing telephone number and an incoming telephone number of the call setup signal through a spam registration server to a first database; Requesting a user of the called terminal to access a spam registration server through an access terminal to register a selected entry among the entries of the first database to a second database; Registering, by the spam registration server, the registration requested entry with the second database; And if the network device or another network device is requested to set up a call matching the entry of the second database, blocking the matched call setup.

Another aspect of the present invention to achieve the above technical problem is the step of measuring the duration of the incoming call by the network device receiving the call setup signal requesting the call setup with the called terminal; Updating, by the network device, a first database in which a frequency of occurrence of each outgoing telephone number is stored through the spam registration server if the duration is less than a first threshold value; Registering, by the spam registration server, an outgoing telephone number having an occurrence frequency greater than a preset second threshold among outgoing telephone numbers stored in a first database in a second database; And if the network device or another network device is requested to set up a call matching the entry of the second database, blocking the matched call setup.

Another aspect of the present invention to achieve the above technical problem is a network device receiving a call setup signal for requesting a call setup with the called terminal determines whether or not the receiving terminal can receive; If the called terminal is in a receivable state, the exchange attempting to establish a call with the called terminal; And when the called terminal is in a non-receivable state, when the network device receives a call setup cancel signal requesting cancellation of the call setup, information on an outgoing telephone number of the call setup signal and a duration of an incoming call. It provides a call processing method comprising the step of providing the corresponding information to the called terminal.

Another aspect of the present invention to achieve the above technical problem is the step of receiving information corresponding to the duration of the unreceived call and information on the outgoing telephone number of the unreceived call; And displaying the duration or the number of ringing times corresponding to the duration together with the calling telephone number.

Another aspect of the present invention to achieve the above technical problem comprises the steps of measuring the duration of the incoming call; Converting the duration into the number of rings; And displaying the number of rings and the calling telephone number of the incoming call.

Another aspect of the present invention to achieve the above technical problem is a receiver for receiving information corresponding to the duration of the unreceived call and information on the outgoing telephone number of the unreceived call; And a display unit for displaying the duration or the number of rings corresponding to the duration together with the calling telephone number.

Another aspect of the present invention to achieve the above technical problem is the conversion unit for measuring the duration of the incoming call, converting the measured duration into the number of rings; And a display unit for displaying the number of rings and an outgoing telephone number of the incoming call.

Another aspect of the present invention to achieve the above technical problem is a measuring unit for measuring the duration of the incoming call; And a delay unit for delaying an operation for notifying the user of the arrival of the incoming call by a predetermined time.

Embodiments of the present invention presented above may have an effect including the following advantages. However, all the embodiments of the present invention are not meant to include them all, and thus the scope of the present invention should not be understood as being limited thereto.

It is effective in blocking spam calls in advance or informing the user of spam information. Therefore, there is an effect that can protect the user from damage caused by various phishing or unnecessary phone calls. In addition, it is effective to obtain accurate information by using a spam pattern and a database. In addition, there is an effect that can increase the probability of blocking spam calls or provide accurate information to the user.

In addition, without adding the functionality of the existing phone, the user can confirm whether or not a spam missed call.

In addition, it can provide information on whether or not a spam missed call in a user-friendly manner.

In addition, since the exchange can block the spam-related call connection without a separate registration operation by the user, there is a user convenience.

In addition, since the subject of ring counting is adaptively determined according to whether the telephone can be received, the ringing time or the number of ringing can be estimated regardless of the state of the telephone.

Since descriptions of embodiments of the present invention are merely illustrated for structural to functional descriptions of the present invention, the scope of the present invention should not be construed as limited by the embodiments described in the present invention. That is, the embodiments of the present invention may be variously modified and may have various forms, and thus, it should be understood to include equivalents that may realize the technical idea of the present invention.

On the other hand, the meaning of the terms described in the present invention will be understood as follows.

Terms such as "first" and "second" are intended to distinguish one component from another component, and the scope of the present invention should not be limited by these terms. For example, the first component may be named a second component, and similarly, the second component may also be named a first component.

The term “and / or” should be understood to include all combinations that can be presented from one or more related items. For example, "first item, second item, and / or third item" means "at least one or more of the first item, second item, and third item", and means first, second, or third item. A combination of all items that can be presented from two or more of the first, second and third items as well as the third item.

When a component is referred to as being "connected" to another component, it should be understood that there may be other components in between, although it may be directly connected to the other component. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

Singular expressions described herein are to be understood to include plural expressions unless the context clearly indicates otherwise, and the terms "comprise" or "having" include elements, features, numbers, steps, operations, and elements described. It is to be understood that the present invention is intended to designate that there is a part or a combination thereof, and does not exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts or combinations thereof. .

Each step described in the present invention may occur out of the stated order unless the context clearly dictates the specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall be interpreted as having ideal or overly formal meanings unless expressly defined in this application. Can't be.

Hereinafter, the present invention will be described with reference to the drawings.

VoIP is a technology for sending and receiving voice over the Internet, a packet transmission network. The VoIP network may be divided into three types, hardware, software, and protocol. Examples of the hardware include an IP phone, a VoX gateway, and a MCU (Multipoint Control Unit). Examples of the software include a soft IP phone, a dialer, and the like that implement various application services performed using an existing analog telephone network. There is this.

The protocol ensures standardized communication between the various components of the VoIP network. Examples of the VoIP protocol include H.323, Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP), and Megaco / H.248.

The SIP identifies and locates terminals that wish to communicate on a packet network including the Internet, and an application layer signaling protocol that specifies a procedure for creating, deleting, or changing a multimedia communication session between them. to be. The SIP is designed as an IP-based client / server structure for easy network maintenance and management, and has excellent compatibility, scalability, and flexibility. The SIP may be included as a component of all Internet terminals, application services, and all network equipment to perform services such as call setup, call management, and application service requests.

1 is a diagram schematically showing an Internet voice packet telephone system using SIP according to an embodiment of the present invention. The system can be broadly divided into a user agent (UA) part and a server part, and include a UA (100, 140), a proxy / redirect server (110), a location server (120), and a registrar (130).

UA (100, 140) refers to each peer of the SIP session. The UA may be divided into a user agent client (UAC) 100 and a user agent server (UAS) 140. The UAC 100 is a client (that is, a user terminal requesting a telephone connection) attempting a SIP request, and the UAS 140 is a server that receives and responds to a SIP invitation (ie, a counterpart of the telephone connection). User terminal). The IP phone can operate with UAC or UAS.

The server portion includes a Proxy / Redirect server 110, a Location server 120, and a Registrar 130. The proxy server receives the connection request message from the UA and forwards it to the SIP server in the network. The SIP server may be another proxy server or UAS. In addition, the proxy server provides functions such as authentication, authorization, access control, routing, and billing. Redirect server provides information about the server that UA needs to access. That is, the Redirect server does not directly transmit the connection request message received from the UA to another UA or proxy server, but the UA or proxy server that they should resend the connection request message to the corresponding UA or proxy server that has sent the connection request message. It tells the address of.

Location server 120 provides address (location) information to Proxy server or Redirect server. The Location server 120 uses a database of Registrar server 130 to provide an address. The registrar server 130 registers information on the current location of the UAC, and stores address information about each UA in a database. In SIP, all users are identified by their SIP address in the form of e-mail. The registrar server 130 stores and manages the user's location information (IP address) for each SIP address along with the priority information for a specified time, and provides the requested user information for the request of the authenticated user through the authentication process. give. The registrar server 130 may be configured separately or may be configured as an auxiliary system of the location server 120.

Each of the servers may be implemented in a server in the same region, or may be implemented in separate servers. 1 is an example of implementing a proxy server and a redirect server in one server.

The UAC 100 may request the UAS 140 access to the Proxy / Redirect server 110 using the SIP protocol to make a call with the UAS 140. The proxy / redirect server 110 relays the connection between the UAS 140 and the UAC 100 using the UAS 140 address information obtained from the registrar server 130 and the location server 120. When a connection is established between the UAC 100 and the UAS 140, a voice data packet may be transmitted and received through a Real-time Transport Protocol (RTP). The UAS 140 may store location information (IP address) in the registrar server 130.

2 is a diagram schematically illustrating a call setup process of an Internet voice packet telephone system using SIP according to an embodiment of the present invention. In FIG. 2, caller 200 refers to the UAC side, and callee 240 refers to the UAS side. For convenience of explanation, the SIP server unit is divided into a first proxy server 210, a location / redirect server 220, and a second proxy server 230.

The caller 200 transmits a SIP invite message to the first proxy server 210 in a domain to which the caller 200 establishes a call with the callee 240. The first proxy server 210 transmits an invite message from the caller 200 to the location / redirect server 220, and the location / redirect server 220 transmits address information to which the callee 240 belongs to the first proxy. Send to server 210. In FIG. 2, the Location / Redirect server 220 transmits the changed address information on the callee 240 in the 302 (Moved Temporarily) message in response to the invite message from the first proxy server 210.

The first proxy server 210 transmits an acknowledgment (ACK) message indicating that the 302 message has been received to the Location / Redirect server 220. The first proxy server 210 transmits an invite message to the second proxy server 230 in the domain to which the callee 240 belongs by using the address information.

The second proxy server 230 transmits an invite message from the first proxy server 210 to the location / redirect server 220, and the location / redirect server 220 receives callee 240 address information in the domain. Is transmitted to the second proxy server 230. In FIG. 2, the Location / Redirect server 220 transmits changed address information in the domain of the callee 240 in a 302 (Moved Temporarily) message in response to an invite message from the second proxy server 230. In FIG. 2, although the first proxy server 210 and the second proxy server 230 request a location / redirect server for requesting address information, the first proxy server 210 and the second proxy server 230 are illustrated. May request address information from a separate Location / Redirect server belonging to each domain.

The second proxy server 230 transmits an acknowledgment (ACK) message indicating that the 302 message has been received to the Location / Redirect server 220. The second proxy server 230 transmits an invite message to the callee 240 using the address information. In response to the received invite message, the callee 240 transmits a 180 (Ringing) message (a response message indicating that a message has been received by the final UAS) to the caller 200 in reverse.

After the call setup is completed, when the callee 240 user receives, the callee 240 transmits a 200 (OK) message (a message indicating that the message has been accepted by the end user) to the caller 200. Upon receiving the 200 message, the caller 200 transmits an acknowledgment (ACK) message indicating that the 200 message has been received to the callee 240.

After the call setup is complete, caller 200 and callee 240 may transmit and receive voice data packets using RTP.

When the call is terminated between the caller 200 and the callee 240, the callee 240 transmits an end message (BYE) to the caller 200, and the caller 200 sends a 200 (OK) message to the callee (200). ) To end the telephone connection between the caller (200) and callee (240).

3 is a diagram schematically illustrating spam diagnosis information according to an embodiment of the present invention.

In the VoIP system as described above, caller information and callee information are included in a SIP message to transmit and receive a message. Therefore, the receiver can be exposed to various spams using the information. Examples of the spam include text spam, advertisement spam, and one ring spam. The one-ring spam causes the receiver to ring the receiver once or twice, i.e., the ring rings for a time short enough to make no call connection with the receiver, and leaves the sender information at the receiver of the receiver, thereby allowing the receiver to It's spam leading people to call you.

As a result of such spam, a user may be harmed by various phishing and advertisements, and thus, a method for preventing such spam is needed. Hereinafter will be described a system that can prevent damage from such spam by using SIP messages, spam diagnosis information.

The SIP server may collect and store the information as shown in FIG. 3 to diagnose whether the caller's phone is a spam phone. In the SIP server, caller information (eg, caller's phone number and caller's IP address) and receiver information (eg, receiver's phone number and receiver's IP address) included in the SIP message can be known. The SIP server determines whether a spam call is made using the information and the spam call list information. Examples of the spam call list include a spam phone number list and a spam phone address list.

The spam phone number list is a database listing outgoing phone numbers that are likely to be spam. The list may be made through a general user's report, request to reject, etc. For example, only the telephone number reported more than a certain number of times may be added to the spam telephone number list by using the reported telephone number and the number of reports. Alternatively, the phone number reported to the spam phone number and the number of reports may be stored together to be put on the spam phone number list and used for diagnosis.

The spam phone address list is a database listing outgoing phone IP addresses that are likely to be spam. The list may be created by monitoring the caller's behavior at the SIP server. For example, if a host is found that attempts to make more than a certain number of calls for a certain time, the host's IP address may be added to the list of spam phone addresses.

The number of rings indicates the number of times the caller has ringed at the receiver of the receiver before the call is connected via RTP with the receiver. The SIP server may be used as a data for determining the spam call by monitoring the number of rings.

For example, when there is a call connection request from the caller, the SIP server monitors the number of rings of the called party for the connection request from the caller. When the number of rings is less than a certain number of times, the SIP server may determine whether the outgoing call is a spam call using the caller information, the spam phone number list, and the spam phone address list information. Alternatively, the SIP server may inform the receiver of the caller information and the spam call determination information for determining whether the caller's phone is a spam call. The number of rings may be set differently according to an embodiment. In the following embodiments, it is assumed that the number of rings is set twice or less for the convenience of description.

As an example to prevent damage caused by the spam, a method of blocking a spam call from the receiver may be used in advance. When the SIP server determines whether it is a spam call using the number of rings and spam call list information, the SIP server may prevent the receiver from ringing the receiver so that missed call records remain in the receiver of the receiver.

For example, in the call setup process of the SIP, if the SIP server delays a message to the receiver's receiver for two ringing periods and requests a telephone connection to ring the ring three or more times, the receiver sends the message to the receiver's receiver. Send a call connection message.

If the bell rings less than two times and the call connection request is interrupted, the SIP server determines whether the caller's call is a spam call using the spam call list information. For example, when the caller's phone number is in the spam phone number list or the sender's IP address is in the spam phone address list, it may be determined that the caller is a spam phone. Alternatively, it may be determined that the call is spam only when both the caller's phone number and the IP address are in the spam call list. This may vary depending on implementation. If it is determined that the caller's call is a spam call, the SIP message is not transmitted to the receiver's receiver so that the missed call record does not remain. However, if the determination result is not a spam call, the SIP message is transmitted to the receiver's receiver so that the missed call record remains.

As another example of preventing the damage caused by the spam, a method of providing information about an outgoing call to a receiver may be used. The user can determine whether the received call is a spam call using the information.

For example, the number of rings of the message from the SIP server to the receiver of the receiver during the call setup process of the SIP is monitored. If, during the call setup process, the bell rings two times or less and the call connection request is interrupted, the SIP server may provide information about the outgoing call to the receiver. The information on the outgoing call may include an outgoing call number, a number listed in a list of spam phone numbers, an IP address listed in a list of spam phone addresses, and the like. In addition to the information on the outgoing call may be provided further comprising ringing information. Information on the outgoing call may be transmitted to the receiver of the user through a SIP message or provided to the user in the form of a short message service (SMS). The user can directly determine whether the missed call that is ringed twice or less is a spam call using the above information.

As another example for preventing the damage caused by the spam, a method of requesting information about a missed call may be used. The user can use the information to determine whether the missed call is a spam call.

For example, the receiver's receiver monitors the number of rings due to SIP message reception. If the called party is recorded as a missed call without connecting the call, the receiver displays the number of rings with the missed call indication. If the receiver inputs a command for requesting information about the missed call, the receiver may transmit a message requesting information about the missed call to a SIP server. When the information request message is received, the SIP server transmits information about an outgoing call to the receiver. The information on the outgoing call may include an outgoing call number, an IP address, whether it is a number listed in a spam phone number list, whether it is an IP address listed in a spam phone address list, and the like. Information on the outgoing call may be transmitted to the receiver of the user through a SIP message or provided to the user in the form of an SMS. The user can directly determine whether the missed call is a spam call using the above information. Alternatively, the SIP server may determine whether it is a spam call and provide only the determination result to the user. The determination method may be a determination method such as the case where the telephone number is in the spam telephone number list, the IP address is in the spam telephone address list, or both the telephone number and the IP address are in the spam telephone list as described above. have.

4 is a diagram schematically showing a configuration of a spam call blocking system according to an embodiment of the present invention. The system includes a spam number database 400, a spam number controller 410, a spam database 420, a spam determination controller 430, a spam host database 440, a spam host controller 450, a call transaction. A unit 460 and a message transmitter 470 is included. The system may be implemented in a SIP server layer. For example, the system may be implemented in the proxy server of the receiver side, or may be implemented in a separate server as a secondary server of the SIP server. Alternatively, the system may be implemented in an access point (AP) connecting a receiver and a network, or may be implemented in a VoIP gateway on a network. According to an implementation example, the system may be implemented in various network components capable of monitoring SIP sessions between callers and callees.

The spam number database 400 stores a database of spam phone numbers for spam phone numbers. The spam phone number list information may be used to determine whether the outgoing phone number is a spam call or may be transmitted to the user to determine whether the user has a spam call. The spam number controller 410 controls data input and output of the spam number database 400. The spam number controller 410 may transmit and store a phone number reported by a user to the spam number database 400, or read data stored in the spam number database 400 and transmit it to another place.

The spam host database 440 stores and stores a list of spam phone addresses for the spam host's IP address. The spam call address list information may be used to determine whether the IP address of the outgoing call is a spam call or may be sent to the user to determine whether the user has a spam call. The spam host controller 450 controls data input and output of the spam host database 440. The spam host controller 450 monitors the behavior of the originating host, and when the host is determined to be a spam call originating host, stores the IP address of the host in the spam host database 440 and controls data input and output.

The spam determination controller 430 monitors the number of rings, and determines whether the outgoing call is a spam call by using the data stored in the spam number database 400 and the data stored in the spam host database 440. The determination result may be provided to the user, or the determination information may be provided to the user. Alternatively, the user may provide outgoing call information such as whether the phone number is in the spam phone number list or the IP address in the spam phone address list when the ringing is less than a predetermined number of times or as a request from the user. .

The spam database 420 may database and store a phone number and an IP address of a host previously determined as a spam call by the spam determination controller 430. The spam database 420 may or may not be used depending on implementation. When the spam database 420 is used, the spam determination controller 430 determines whether a spam call is made using a phone number and address information stored in the spam database 420, and then the spam database 420. If not registered in the), it is possible to determine whether or not a spam call using the phone number, address information, and the like stored in the spam number database 400, spam host database 440. When the spam database 420 is not used, the spam determination controller 430 uses the telephone number and address information stored in the spam number database 400 and the spam host database 440 to determine whether a spam call is made. Judge.

In addition, the spam database 420 may not be used even when the spam determination controller 430 does not determine whether a spam call is made and transmits the spam call determination information to the user.

The call transaction unit 460 is used to block in advance the transmission of the outgoing message to the receiver when the outgoing call is a spam call. In the case of a system that does not use a function to block spam calls in advance, the call transaction unit 460 may not be used. The call transaction unit 460 delays a message going from the SIP server to the receiver of the receiver during the call establishment process of the SIP for two rings. During the delay time, the call transaction unit 460 transmits a ringing message to the outgoing call.

When the outgoing call requests a telephone connection so that the bell rings three times or more, the call transaction unit 460 controls to transmit a call connection message to the receiver of the receiver. However, when the bell rings twice or less and the call connection request is stopped, and the spam determination unit 430 determines that the call is a spam call using the spam call list information, the call transaction unit 460 receives the receiver. Control not to send SIP messages so that missed call records remain. If it is determined that the spam determination controller 430 is not a spam call, the call transaction unit 460 transmits a SIP message so that the missed call record remains in the receiver of the receiver.

5 is a diagram schematically showing an operation of a call transaction unit according to an embodiment of the present invention. FIG. 5 is a diagram schematically illustrating an invite message and a ringing message in the call setup process of FIG. 2.

The call transaction unit 460 delays an invitation message from a SIP server (eg, a proxy server) to a receiver during two ringing periods during the call setup process of the SIP, and rings 180 times during the delay time. Create a message and send it to the caller (①). If it is determined that the caller's phone is a spam call, the call transaction unit 460 does not transmit the invite message to the receiver. The spam call determination is as described above.

If it is determined that the caller's phone is not a spam call, the call transaction unit 460 causes the sender's invite message to be transmitted to the receiver of the receiver. When the invite message is received, the receiver transmits a 180 (ringing) message to the caller (②).

The message transmitter 470 is used to transmit information on the outgoing call to the receiver of the receiver. In the case of a system that does not use a function of transmitting information about an outgoing call to the receiver, the message transmitter 470 may not be used. The message transmitter 470 may transmit outgoing call information, for example, whether a spam call list is included, outgoing call number information, and outgoing call address information, to the receiver of the user under the control of the spam determination controller 430.

6 is a flowchart schematically illustrating a process of transmitting spam call determination information to a receiver according to an embodiment of the present invention. 6 is an example of providing information on a spam call determination to a receiver of a receiver.

As an example of providing information on the determination of spam call, there is a method of monitoring the ringing at the server and providing the spam call determination information to the receiver. If there is a call connection request, the SIP server monitors the number of rings during the call setup process using the SIP message (S600). The monitoring result is compared with the set number of times (S610), when the bell rings and drops below a predetermined number of times, search for the determination information as to whether the outgoing call requesting the call connection is a spam call (S620) and the retrieved determination information as a receiver. Provided to (S630). For example, the SIP server provides the receiver with information about whether the outgoing call is spam or not with the information about the outgoing call so that the user can determine whether the outgoing call is a spam call.

When the monitoring result is compared with the set number of times (S610), when the number of rings rings more than a predetermined number of times, it is possible to display only the missed call message on the receiver of the receiver without providing the determination information to the user (S640). .

7 is a flowchart schematically illustrating a process of transmitting information to a recipient who has requested spam call determination information according to an embodiment of the present invention. 7 is an example of requesting information on a spam call determination at a receiver of a receiver.

Another example of providing information on spam call determination is a method of requesting a server for spam call determination information by monitoring a ringing at a receiver. If there is a call connection request, the receiver of the receiver monitors the number of rings during the call setup process (S700). As a result of the monitoring, when the bell rings and drops below a predetermined number of times, the receiver displays the number of times the bell rings on the screen (S710). Information about the number of times the bell is ringed may be displayed along with information about the missed call.

If the user requests spam determination information for the missed call, the receiver may request the information from the SIP server side. When the user requests spam determination information for the missed call (S720), the receiver requests the information from the SIP server (S730). The SIP server searches for determination information on whether the outgoing call is a spam call, and provides the retrieved determination information to the receiver (S740). For example, the SIP server provides the receiver with information on determining whether the outgoing call is spam or not so that the user can determine whether the outgoing call is a spam call.

If the user does not request spam determination information for the missed call (S720), the receiver does not request the information on the server side, and may perform another process desired by the user.

8 is a flowchart schematically illustrating a process of blocking a spam call as an embodiment according to the present invention.

As an example of blocking spam calls, there is a method of blocking a message sent to a receiver by determining whether a spam call is made by a server. If there is a call connection request, the SIP server monitors the number of rings during the call setup process using the SIP message (S800). The SIP server delays the transmission of the SIP message for call establishment to the receiver while the bell is ringed a predetermined number of times. The monitoring result is compared with the set number of times (S810), when the bell rings and drops below a predetermined number of times, search for determination information on whether an outgoing call requesting a call connection is a spam call (S820). For example, the determination information may include spam call list information. When the bell is ringed for a predetermined number of times by comparing the monitoring result with the set number of times (S810), the receiver sends a SIP message for call setup to the receiver. If the receiver does not receive it is displayed as a missed call in the receiver (S850).

If it is determined as a spam call using the retrieved determination information (S830), the SIP server blocks the SIP message transmitted to the receiver of the receiver (S840). If the outgoing call is not determined to be a spam call (S830), the SIP server transmits the SIP message to the receiver of the receiver to be displayed as a missed call on the receiver (S850).

In the present specification, after receiving a call setup signal from an Internet telephone server or various telephones or various destination side exchanges, the time until the call setup cancellation signal corresponding thereto is received is referred to as a duration of the incoming call for convenience. If the duration of an incoming call is less than a certain period (a period that can be pre-determined as a statistical value of the duration of an incoming call corresponding to a missed missed call, for example 3 seconds), the incoming call corresponds to a missed missed call. Can be determined to be a call.

9 shows an exemplary telephone network for explaining the embodiments of the present invention described below.

Referring to FIG. 9, mobile stations (MSs) 900 and 910 such as mobile communication telephones are provided with a telephone service through a public land mobile network (PLMN), and wired telephones such as a general telephone or a wired / wireless telephone set are used. 920 and 930 are provided with telephone service through a public switched telephone network (PSTN).

Referring to FIG. 9, the PLMN includes a home location register (HLR) 980, visitor location registers (VLRs) 955 and 975, and a mobile switching center. MSCs 955, 975, Gateway MSC 985, Base Station Controllers BSC 945, 965 and Base Station Transceiver In the following, BTSs 940, 950, 960, and 970 are included. MSC and VLR may be implemented as separate network devices that are physically spaced apart, but in FIG. 9, MSC / VLR is represented for simplicity.

The BSCs 945, 965, also referred to simply as the control station, and the BSTs, 940, 950, 960, 970, also called the base station, form the base station subsystem (BSS). For example, in FIG. 9, the MS 900 belongs to the jurisdiction of the first BSS (the leftmost BSS in FIG. 9) and receives telephone service. More specifically, the MS 900 communicates with the BST 940 in a wireless access manner. The BSC 945 controls the first base station 940 and the second base station 950 so that MSs in the first BSS (eg, the MS corresponding to reference numeral 900) can perform normal communication.

The MSC 955 has jurisdiction over the first BSS and the second BSS (the second left BSS in FIG. 9), so that the corresponding BSCs (eg, reference numerals of FIG. 9) that control the wireless connection through the first and second BSSs are controlled. Exchange various signals with BSC corresponding to 945).

The HLR 980 manages location information indicating which MSCs 955 and 975 are in the jurisdiction of the MSs 900 and 910, and the VLR is the MSs 900 and 910 among the BSSs that the MSC is responsible for. Manage location information about which BSS belongs to. On the other hand, the VLR can manage not only this location information, but also subscriber information including information necessary for determining call constraints and status information (explicit power-off, etc.) of the MSs 900 and 910. Those who are engaged can fully understand.

The MSCs 955 and 975 have their own VLRs 955 and 975, and perform an exchange function to exchange various data with each other so that normal telephone service is performed in the PLMN. The GMSC 985 has a gateway function for signal compatibility with another network (eg, PSTN) as well as the above-described exchange function.

Referring to FIG. 9, the PSTN includes Service Switching Points (SSPs) 922 and 928 called end stations and Signaling Transfer Points (926 and 928) referred to as relay exchanges. SSPs 922 and 928 are located at the end of the PSTN and provide telephone service to connected landline telephones 920 and 930 or a private exchange (not shown). The STPs 924 and 926 relay a call related signal between the calling SSP (eg, SSP corresponding to reference number 922) and the called SSP (eg, SSP corresponding to reference numeral 928).

Meanwhile, although FIG. 9 illustrates a small number of MSC / VLR, SSP, STP, and BSS for convenience of description, FIG. 9 is a simplified telephone network for explaining the concept of the present invention. It is not limited to structure.

A call setup process and a call setup release / cancellation process between wired telephones 920 and 930 will be described with reference to FIG. 9.

When the caller picks up the handset of his landline telephone (hereinafter called calling party phone) 920, the SSP (hereinafter called calling party SSP) in which off-hook signal governs calling party phone 920 from calling party phone 920 ( 922, and the calling side SSP 922 sends a dial tone signal to the calling telephone 920 in response.

Then, when the caller inputs the called party's landline telephone (hereinafter referred to as the telephone number of the called telephone 930 (hereinafter referred to as the called telephone number)) to the calling telephone 920, a signal containing the entered called telephone number (for example, , The digit signal transmitted in the DTMF component) is transmitted to the originating SSP 922.

In response, the originating SSP 922 transmits an IAM (Initial Address Message), and the transmitted IAM transmits an SSP (hereinafter referred to as “SSP”) which manages the called party's telephone 930 through the relay of the STPs 924 and 926. Side SSP) 928. The IAM is a signal for requesting call setup and includes an outgoing telephone number and an incoming telephone number necessary for call setup.

After receiving the IAM, the called party SSP 928 determines whether ringing is possible at the called party phone 930 (for example, whether the call is in a busy state or disconnected state), and then sets up the setup message. It transmits to the telephone 930. The called party's phone 930 transmits an Alerting message indicating that the setup message was successfully received in response. At this time, the ringing is started at the called telephone 930.

The destination SSP 928 that receives the alerting message transmits an address complete message (ACM). The transmitted ACM is delivered to the originating SSP 922 via the relay of the STPs 924 and 926. This ACM is a message for notifying the calling party SSP 922 that the called party's phone 930 has received all the information necessary for call setup.

The originating SSP 922, which has received the ACM, transmits a ringback tone signal to the calling telephone 920 so that the calling telephone 920 hears the ringing back tone.

On the other hand, when the user (hereinafter referred to as the called party) of the called party's telephone 930 who has heard the ringing, picks up the handset, an off-hook signal is transmitted from the called party's telephone 930 to the called party's SSP 922.

In response, the destination SSP 922 transmits an Answer Message (ANM), which is transmitted to the originating SSP 922 via the relaying of the STPs 924 and 926. The ANM is a message for notifying the calling SSP 922 that the called party response has been made, and is also used for the charging start message.

In response to the received ANM, the calling party SSP 922 transmits a connect signal to the calling party phone 920. As a result, the call connection is successful, and then a call is made between the calling telephone 920 and the called telephone 930.

If the caller releases the handset during the call, an on-hook message is sent from the calling telephone 920 to the calling SSP 922. In response, the originating SSP 922 transmits a call setup release message (hereinafter referred to as REL). The STPs 926 and 928 relay this REL to the called party SSP 928, but disconnect the line in charge of it and transmit a call release completion message (hereinafter referred to as RLC) to the other side. The called party SSP 928 receiving the REL disconnects the line connection with the called party telephone 930 and transmits the RLC to the STP 926.

On the other hand, in the case of missed calls, the call processing process is performed as follows. Before the called party makes an incoming response (the operation of hearing the ringing and picking up the receiver), a signal for canceling the call setup request (call setup cancel signal) is transmitted to the called party SSP 922, and accordingly the called party SSP 922 is received. Stops the call setup operation. Here, the call setup release signal in this specification is a signal for requesting to disconnect the already established call, and the call setup cancel signal is classified as a signal not to perform the requested call setup for convenience, and the above-described REL is also referred to as a call setup cancellation signal. Can be used.

In particular, spam missed calls (calls that minimize the ring time so that the call establishment request is canceled before the called party answers the ring and leave a call record, which leads the follower's subsequent calls) are called SSPs. In 928, a method for reducing the difference between the reception time of the call setup signal (the call setup request, IAM) as the reception time of the call setup cancellation signal is used.

A call setup process and a call setup release / cancellation process between the MSs 900 and 910 will be described with reference to FIG. 9.

When the caller inputs the telephone number (hereinafter referred to as the called telephone number) of the called party's MS (hereinafter referred to as MS) 910 to his MS (hereinafter referred to as MS) 900, the calling party MS 900 is referred to. The call setup signal for requesting call setup is transmitted. This call setup signal is transmitted through the BTS 940 and the BTC 945 to the MSC (hereinafter referred to as calling MSC) 955 in charge of the BSS of the calling MS 900. This call setup signal includes the calling telephone number and the called telephone number.

The calling party MSC 955 queries the subscriber information in the calling party VLR 955 to determine the call restriction condition of the calling party (eg, whether it is an illegal subscriber, whether it is a non-paying subscriber, whether a calling prohibit subscriber, etc.).

If it is determined that the call restriction condition is not satisfied, the calling MSC 955 grasps the MSC (hereinafter referred to as the called MSC) 975 that controls the called MS 910 through the HLR 980. More specifically, the originating MSC 955 queries the HLR 980 which MSC jurisdiction the destination MS 910 is in, and receives a roaming number (MSRN: Mobile Subscriber Roaming Network) from the HLR 980. The called MSC 975 is known based on this roaming number.

The calling MSC 955 forwards the call setup signal to the identified called MSC 975.

The called party MSC 975 receiving the call setup signal is provided with the subscriber information including the information necessary for the determination of the aforementioned call restriction condition and the location information of the called party MS 910 from the called party VLR 975. Call restriction conditions (eg, illegal subscribers, late subscribers, outgoing subscribers, etc.) are determined.

If it is determined that the call restriction condition is not satisfied, the called party MSC 910 transmits a paging request signal to the BSC 965 corresponding to the received location information, that is, the location area code.

The BSC 965, which has received this, transmits a paging signal through all BSTs 960 and 970 which are in charge of it.

The destination MS 910 detects that a paging signal including its telephone number is received and transmits a response, that is, a paging response signal.

Upon receiving the paging response signal, the BST 970 informs the called party's MSC 965 of the called party's paging response through the BSC 965.

The destination MSC 975 notified of the paging response controls the BSC 965 and the BTS 970 so that ringing occurs at the destination MS 910. When the called party hears the ringing and takes a response action through a terminal operation (eg, a call button input), a call is made between the calling MS 900 and the called MS 910.

If a caller requests termination of a call through a terminal operation (e.g., a call termination button input) during a call, a signal (call release signal) for canceling call setup through the BST 945 and BSC 945 is transmitted to the calling MSC ( 955). In response, the originating MSC 955 transmits a call release signal, which is transmitted to the called MSC 975. In the process of transmitting the call setup release signal, call setup of the corresponding transmission path is released, and the called party MSC 975 notifies the called party MS 910 through the BSC 965 and the BST 970. .

In the case of PLMN, missed calls are made on a similar principle as in the case of PSTN. Before the called party answers an incoming call (operation such as hearing a ringing and entering a call button, etc.), a signal for canceling a call establishment request (call setup cancellation signal) is transmitted to the called party MSC 975, and accordingly the called party MSC ( 975 stops the call setup operation.

A call setup process and a call setup release / cancellation process between the wireline telephone 920 and the MS 910 will be described with reference to FIG. 9.

As described above, the originating SSP 922 transmits an IAM (Initial Address Message), and the transmitted IAM is transmitted to the GMSC 985 through the relay of the STP 924.

The GMSC 985, which has received the IAM, grasps the jurisdiction of the MS (ie, the destination MS) 910 having the called phone number included in the IAM through the HLR 985. In other words, the GMSC 985 finds the destination MSC 975.

GMSC 985 then transmits a signal for requesting call setup (call setup signal), and the call setup signal thus transmitted is delivered to destination MSC 975.

Since the subsequent operation is the same as the corresponding operation of the call setup process and call setup release / cancellation process between the MS (900, 910), the description thereof will be omitted. That is, the GMSC 985 performs an operation of making the call-related signal compatible between the PLMN and the PSTN, but the basic principle is the same as described above.

10 is a flowchart illustrating a call processing method according to an embodiment of the present invention.

In the embodiment of Fig. 10, the called terminal is a mobile communication telephone (e.g., MS corresponding to reference numeral 900 or 910 of Fig. 9), a landline telephone having a text message receiving function (e.g., reference numeral 920 or Wired telephone corresponding to 930), and is used as a concept including an internet telephone. Accordingly, the called party network device may be a switch of a mobile communication network (for example, an MSC corresponding to reference number 955 or 975 of FIG. 9), a switch of a wired telephone network (for example, an SSP corresponding to reference number 922 or 928 of FIG. 9), And an internet telephony server. In addition, in the embodiment of FIG. 10, the calling terminal is a mobile communication phone (eg, MS corresponding to reference numeral 900 or 910 of FIG. 9) and a landline telephone (eg, wireline telephone corresponding to reference numeral 920 or 930 of FIG. 9). ), And Internet telephones.

In step S1000, the called party network device that receives the call setup signal corresponding to the missed missed call receives the call setup cancel signal before the call setup is still made.

In step S1010, the called-side network device measures the duration of the incoming call, that is, the time difference between the reception time of the call setup signal and the reception time of the call setup cancellation signal. According to an embodiment, the called network device estimates a ringing time at the called terminal based on the duration. The interval according to predetermined signaling (e.g., transmission of a paging request signal, transmission of a paging signal, etc.) between the reception time of the call setup signal at the called network device and the start of ringing at the called terminal is determined. exist. In addition, there is an interval in accordance with a predetermined signaling (for example, in the case of mobile communication, disconnect signal transmission) between the reception time of the call setup cancellation signal at the called network device and the termination of the ringing at the called terminal. Using the above-described average value of intervals (preset in the called party's network device) and the call setup signal reception time and the call setup cancellation signal reception time, the called network device can estimate the ringing time by the above-described method. . In addition, since the ringing time may correspond to the number of ringing in advance, the number of ringing may also be estimated using this correspondence.

In step S1020, the called party network device provides the user of the called terminal with information on the calling telephone number of the call setup signal and information corresponding to the duration. Here, the information corresponding to the duration includes the duration itself or the estimated number of rings. Preferably, if the duration is less than a preset threshold, the called party network device is informed about the call origination number of the call setup signal and the duration through a Short Message Service Center (SMSC). The SMS message including the corresponding information is transmitted to the called terminal. Here, one embodiment of the preset threshold is a time determined according to the average number of rings of a spam missed call, for example, one ringing time (for example, 4 seconds).

Here, the message according to an embodiment includes an outgoing telephone number and the duration of the call setup signal. According to another embodiment, the message includes an outgoing telephone number of the call setup signal and the estimated number of rings. The estimated number of rings may be obtained based on preset relationship information (the relationship between the number of rings and the number of rings) and the estimated ring times in step S1010.

In step S1030, the user of the called terminal determines whether to register the outgoing phone number as a spam phone number based on at least one of an outgoing phone number, a duration, and the number of rings in the received message. Then, if it is determined that registration is made with the spam telephone number, the user of the called terminal requests registration of the mapping relationship between the calling telephone number and the called terminal's telephone number to the spam registration server through the access terminal. Here, the access terminal is a terminal capable of connecting to the spam registration server (for example, a web connection), and examples thereof include a personal computer (PC) and the called terminal. Meanwhile, according to another exemplary embodiment, there may be a method of registering the outgoing telephone number on a blocking list within a called terminal.

In step S1040, the spam registration server stores the mapping request received registration registration in the spam database.

The spam database is utilized as follows. If the exchanges belonging to the telephone network are requested to set up a call matching the entry of the spam database, the matching call setup is blocked.

On the other hand, although the short message service center, the access terminal, the spam registration server, and the spam database are not shown in FIG. 9, the short message service center transmits a text message at the request of the called party's network device and registers the spam at the request of the access terminal. If the server is able to add or update entries in the spam database, and the destination network device can query the spam database for spam call blocking, the embodiment of FIG. 10 is applicable to those skilled in the art. have.

11 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

In the embodiment of FIG. 11, the called terminal and the calling terminal correspond to a mobile communication terminal (eg, MS corresponding to reference numeral 900 or 910 in FIG. 9) and a wired telephone (eg, reference numeral 920 or 930 in FIG. 9). Wired telephone), and an internet telephone. Accordingly, the called party network device may be a switch of a mobile communication network (for example, an MSC corresponding to reference number 955 or 975 of FIG. 9), a switch of a wired telephone network (for example, an SSP corresponding to reference number 922 or 928 of FIG. 9), And an internet telephony server.

In operation S1100, the called party network device that receives the call setup signal corresponding to the missed missed call receives the call setup cancel signal before the call setup is still made.

In step S1110, the called-side network device measures the duration of the incoming call, that is, the time difference between the reception time of the call setup signal and the reception time of the call setup cancellation signal. According to an embodiment, the called network device estimates the number of rings at the called terminal based on the duration. The estimation method for the number of rings is as described with reference to FIG.

In step S1120, if the duration is less than a preset threshold, according to an embodiment, the called party network device determines a mapping relationship between the outgoing telephone number and the called telephone number of the call setup signal through the spam registration server and the candidate spam database. Register at According to another embodiment, the called network device binds the above-described mapping relationship and the estimated ringing time (or estimated ringing times) and registers the candidate spam database.

The estimation method and the preset threshold for the number of rings are as described in FIG. 10.

In step S1130, after the user of the called terminal accesses the spam registration server through the access terminal, if it is determined that the mapping relationship corresponding to the telephone number in the candidate spam database is registered and registered as the spam telephone number, spam Request the registration server to register the corresponding entry in the candidate spam database into the spam database. Here, the access terminal is as described in FIG.

In step S1140, the spam registration server registers the entry requested to be registered in the spam database.

Utilization of the spam database is as described in FIG.

On the other hand, although the access terminal, the spam registration server, the candidate spam database, and the spam database are not shown in FIG. 9, the spam registration server adds an entry of the candidate spam database in response to a request from the destination network device, Accordingly, if the spam registration server reflects the entry of the candidate spam database in the spam database and the destination network device can query the spam database for blocking the spam call, the embodiment of FIG. 11 is applicable. If you grow up, you can fully understand.

12 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

In the embodiment of Fig. 12, the called terminal and the calling terminal correspond to a mobile communication terminal (e.g., MS corresponding to reference numeral 900 or 910 in Fig. 9), a wired telephone (e.g., reference numeral 920 or 930 in Fig. 9). Wired telephone), and an internet telephone. Accordingly, the called party network device may be a switch of a mobile communication network (for example, an MSC corresponding to reference number 955 or 975 of FIG. 9), a switch of a wired telephone network (for example, an SSP corresponding to reference number 922 or 928 of FIG. 9), And an internet telephony server.

In operation S1200, the called party network device that receives the call setup signal corresponding to the missed missed call receives the call setup cancel signal before the call setup is still made.

In step S1210, the called-side network device measures the duration of the incoming call, that is, the time difference between the reception time of the call setup signal and the reception time of the call setup cancellation signal. According to an embodiment, the called network device estimates the number of rings at the called terminal based on the duration. The estimation method for the number of rings is as described with reference to FIG.

In step S1220, if the duration is less than the first threshold value, the called party network device updates the candidate spam database in which the frequency of occurrence of each outgoing telephone number is stored through the spam registration server. For example, the spam registration server increases the frequency of occurrence corresponding to the calling telephone number of the call establishment signal among the entries in the candidate spam database by one. Here, the preset first threshold is described in the same manner as the preset threshold in FIG. 10.

In operation S1230, the spam registration server registers an entry in the spam database in which occurrence frequency is greater than a second predetermined threshold. Here, as an example of the preset second threshold value, 10,000 times etc. are mentioned. This is because spammers generate many spammy missed calls using the same outgoing phone number.

The spam database is utilized as described in FIG.

On the other hand, although the spam registration server, candidate spam database, and spam database are not shown in FIG. 9, the spam registration server adds an entry of the candidate spam database at the request of the called party's network device, and the spam registration server adds an entry of the candidate spam database. If the entry is reflected in the spam database, and the destination network device can query the spam database for spam call blocking, the embodiment of FIG. 12 is applicable to those skilled in the art.

13 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

In the embodiment of Fig. 13, the called terminal can estimate the ringing time or the number of ringing times, display the outgoing telephone number and the estimated time or number, and have a text message receiving function (e.g., , MS corresponding to reference numeral 900 or 910 of FIG. 9, a landline telephone (eg, a wireline telephone corresponding to reference numeral 920 or 930 of FIG. 9), and an internet telephone. Accordingly, the called party network device may be a switch of a mobile communication network (for example, an MSC corresponding to reference number 955 or 975 of FIG. 9), a switch of a wired telephone network (for example, an SSP corresponding to reference number 922 or 928 of FIG. 9), And an internet telephony server.

In step S1300, when the called network device receives a call setup signal requesting call setup with the called terminal, it is determined whether the called terminal is in a reception state.

Here, the method of determining whether or not the state can be received according to an embodiment of the present invention is as follows.

The called party network device capable of monitoring that the called party terminal (MS, landline phone, Internet phone) is busy is determined to be incapable of receiving if the called party terminal is busy.

When the called terminal MS makes an explicit power off (for example, by pressing the power off button on the telephone) to request a temporary stop of the mobile communication service, this information is recorded in the VLR, so that the called network device is connected to the VLR. It is determined that the called terminal having an explicit power off is in an unreceivable state.

When the called terminal MS is in an implicit power off (eg, forced battery outage) state or in a shadow area (eg, the called terminal is located in the tunnel), when the called network device transmits a paging signal, Since the side terminal cannot transmit the paging response signal, the called network device determines that the called terminal is in an unreceivable state if the expected paging response signal is not received.

When the called terminal is in a reception state (S1300), the called network device attempts to establish a call with the called terminal (S1310).

Thereafter, when the call setup fails due to the user's non-response, the called terminal according to an embodiment measures the duration of the incoming call, and if the duration is smaller than a preset threshold, the corresponding information is stored. The call screen of the failed call setup is displayed on the screen together (S1320). Here, the information corresponding to the duration includes at least one of the duration itself, the ringing time, the vibration time, and the number of ringing times.

Here, the estimation of the number of rings is as described with reference to FIG.

According to another exemplary embodiment, a called terminal corresponds to the main telephone among a set of wired and wireless telephones including a main telephone connected to a receiver network device and a cordless telephone connected to the main telephone. The main body telephone controls the wireless telephone so that information corresponding to the duration can be displayed on the screen of the wireless telephone together with the outgoing telephone number of the failed call setup (S1320).

When the called terminal is in a non-receiving state (S1300), when the called network device receives a call setup cancel signal requesting cancellation of the call setup, information about the calling telephone number of the call setup signal and the duration of the incoming call are continued. Information corresponding to time is provided to the called terminal (S1330). According to an embodiment, the called network device estimates the number of rings at the called terminal based on the duration. Here, the information corresponding to the duration includes the duration itself or the estimated number of rings. Preferably, if the duration is less than a preset threshold, the called party network device sends an SMS message including information on the calling telephone number of the call setup signal and information corresponding to the duration of the incoming call through a short service center. Send to the called terminal. Here, the message is as described in FIG.

In operation S1340, the user of the called terminal determines whether to register with a spam telephone number based on the information included in the received message or displayed information, and if it is determined that the user registers with the spam telephone number, spam through the access terminal. The registration server requests a registration relationship between the calling telephone number and the telephone number of the called terminal. Here, the access terminal is as described in FIG.

In operation S1350, the spam registration server stores the mapping request for registration in the spam database. Utilization of the spam database is as described in FIG.

On the other hand, although the short message service center, the access terminal, the spam registration server, and the spam database are not shown in FIG. 9, the short message service center transmits a text message at the request of the called party network device, If the spam registration server adds or updates an entry in the spam database, and the destination network device can query the spam database for spam call blocking, the embodiment of FIG. 13 is applicable to those skilled in the art. I can understand.

14 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

In the embodiment of Fig. 14, the called terminal is a mobile communication terminal (e.g., MS corresponding to 900 or 910 in Fig. 9), a landline telephone (e.g., a landline telephone corresponding to 920 or 930 in Fig. 9). It is used as a concept that includes, and an internet phone. Accordingly, the called party network device may be a switch of a mobile communication network (for example, an MSC corresponding to reference number 955 or 975 of FIG. 9), a switch of a wired telephone network (for example, an SSP corresponding to reference number 922 or 928 of FIG. 9), And an internet telephony server.

In step S1400, the receiving network device receives the call setup signal requesting the call setup with the called terminal terminal measures the duration of the incoming call. Preferably, the called party network device starts the operation of transmitting the call setup signal to the called party terminal only when the duration is longer than a predetermined period. Here, an example of the predetermined period may be a predetermined value as a statistical duration for generating one-ring spam.

In step S1410, when the duration time is less than the preset threshold, the network device searches for spam determination information for the outgoing telephone number of the call setup signal. In one example, the called party network device checks whether the outgoing telephone number is in a spam database in which a spam telephone number or a spam IP address is registered. In this case, the spam determination information includes information regarding whether the outgoing telephone number or outgoing IP address of the incoming call is included in the spam database.

In step S1420, the called party network device provides the retrieved spam determination information to the user of the called party terminal. Here, examples of the providing method may include a method using a SIP message or a method using an SMS message, but is not limited thereto.

15 is a block diagram showing the configuration of a telephone according to an embodiment of the present invention.

Referring to FIG. 15, the phone according to the present embodiment includes a transceiver 1500, a controller 1510, a user interface 1520, a spam candidate list 1530, and a spam list 1540.

The transceiver 1500 performs a transmit / receive operation according to a general phone function. Examples of the operation include a text message transmit / receive process and a call-related signal transmit / receive process.

The user interface 1520 is a module that is responsible for interfacing with a user, and examples thereof include an LCD screen, a keypad, a button, a speaker, a microphone, and the like.

The controller 1510 is in charge of controlling the entire phone.

The spam candidate list 1530 and the spam list 1540 are stores capable of storing data, which will be described later, and may be implemented as a memory.

Referring to FIG. 14, the control unit 1510 includes a conversion unit 1512, a spam candidate registration unit 1514, a spam registration unit 1516, and a delay unit 1518, and the user interface 1520 includes a display unit ( 1522, an input unit 1524, and a vibration / ringing unit 1526.

The conversion unit 1512 converts the ringing time or vibration time according to the missed call into the number of ringing times. In one example, the conversion unit 1512 measures the duration of the incoming call, and converts the measured duration into the number of rings. In this case, the controller 1510 controls the display unit 1522 to display information including the converted number of rings and the outgoing telephone number of the missed call on the phone screen. Preferably, the above-described conversion operation and display operation are performed only when the incoming call becomes a missed call.

Meanwhile, in the embodiment of FIG. 13, information corresponding to the duration of an unreceived call and information about an outgoing call number of the unreceived call may be received by the transceiver 1500 in step S1330. In this case, the controller 1510 controls the display unit 1522 to display information corresponding to the duration of the unreceived call and information about the outgoing telephone number of the unreceived call on the phone screen.

The user of the telephone having viewed the displayed information may input a spam registration request or a spam determination information request through the input unit 1524. Here, examples of spam registration requests include a request to register to the spam list 1540 provided in the phone itself and a request to register to a spam database managed by the above-described spam registration server.

In the case of the former spam registration request, the spam registration unit 1516 registers the outgoing telephone number of the missed call in the spam list 1540. In the case of the latter spam registration request, the transmission / reception unit 1524 transmits the corresponding outgoing telephone number to the spam registration server to be registered in the spam database.

When the spam determination information request is input, the transceiver 1500 requests spam determination information for the displayed outgoing telephone number from the spam registration server and receives the requested spam determination information. Here, the spam determination information includes information about whether the corresponding outgoing telephone number is included in the spam database.

The spam candidate registration unit 1514 registers the outgoing call number of the missed call to the spam candidate list 1530 together with the number of calls received from the outgoing call number when the number of rings is less than or equal to the first predetermined number of rings. The spam registrar 1516 registers an outgoing telephone number having a number of incoming calls greater than or equal to a second predetermined number among the outgoing telephone numbers stored in the spam candidate list 1530 in the spam list 1540. Here, as an example of the first predetermined number of times, the number of rings for the missed missed call is an example of the number of rings. The second predetermined number of times is that not all phones (call or call setup signals) that have generated a short vibration / ring time may not be spam-like missed calls, and in order to prepare for this case, the same outgoing call may be generated while generating a short vibration / ring time. Only for calls with phone numbers, corresponding outgoing phone numbers will be registered in the spam list 1540.

Thus, the user's careful decision (analyze the displayed phone number and / or the number of rings and register that outgoing phone number in the spam list) or the automatic careful decision of the phone itself (the phone is first and second predetermined) The outgoing call number is registered in the spam list 1540 through the outgoing call number having a condition satisfying the predetermined number of times in the spam list.

On the other hand, in spite of the above-described prudent decision, a case where a phone number not corresponding to a spam missed call is registered in the spam list 1540 may occur. In order to prepare for such a case, the present embodiment further includes a delay unit 1518 as shown in FIG. 14.

The delay unit 1518 delays an operation of informing the user whether the incoming call arrives by controlling the vibration / ringing unit 1526 for a predetermined time. Here, the operation of notifying the user includes an operation of generating a ringing operation and an operation of generating vibration. According to an embodiment, the delay unit 1518 starts an operation of notifying the user of the arrival of the incoming call as soon as the duration of the incoming call exceeds a preset threshold, and the duration of the incoming call does not exceed the preset threshold. Otherwise, the vibration / ringing generator 1526 is controlled to not notify the user of the arrival of the incoming call. According to another embodiment, the delay unit 1518 performs the above-described delay operation only on the call received from the outgoing telephone number registered in the spam list 1540.

The invention can also be embodied as computer readable code on a computer readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

The inventors of the present invention have been described with reference to the embodiments shown in the drawings for clarity, but this is merely exemplary, and those skilled in the art may various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

Embodiments of the present invention presented above may have an effect including the following advantages. However, all the embodiments of the present invention are not meant to include them all, and thus the scope of the present invention should not be understood as being limited thereto.

It is effective in blocking spam calls in advance or informing the user of spam information. Therefore, there is an effect that can protect the user from damage caused by various phishing or unnecessary phone calls. In addition, it is effective to obtain accurate information by using a spam pattern and a database. In addition, there is an effect that can increase the probability of blocking spam calls or provide accurate information to the user.

In addition, without adding the functionality of the existing phone, the user can confirm whether or not a spam missed call.

In addition, it can provide information on whether or not a spam missed call in a user-friendly manner.

In addition, since the exchange can block the spam-related call connection without a separate registration operation by the user, there is a user convenience.

In addition, since the subject of ring counting is adaptively determined according to whether the telephone can be received, the ringing time or the number of ringing can be estimated regardless of the state of the telephone.

1 is a diagram schematically showing an Internet voice packet telephone system using SIP according to an embodiment of the present invention.

2 is a diagram schematically illustrating a call setup process of an Internet voice packet telephone system using SIP according to an embodiment of the present invention.

3 is a diagram schematically illustrating spam diagnosis information according to an embodiment of the present invention.

4 is a diagram schematically showing a configuration of a spam call blocking system according to an embodiment of the present invention.

5 is a diagram schematically showing an operation of a call transaction unit according to an embodiment of the present invention.

6 is a flowchart schematically illustrating a process of transmitting spam call determination information to a receiver according to an embodiment of the present invention.

7 is a flowchart schematically illustrating a process of transmitting information to a recipient who has requested spam call determination information according to an embodiment of the present invention.

8 is a flowchart schematically illustrating a process of blocking a spam call as an embodiment according to the present invention.

9 shows an exemplary telephone network for explaining the embodiments of the present invention described below.

10 is a flowchart illustrating a call processing method according to an embodiment of the present invention.

11 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

12 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

13 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

14 is a flowchart illustrating a call processing method according to another embodiment of the present invention.

15 is a block diagram showing the configuration of a telephone according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

400: spam number database 410: spam number control unit

420: spam database 430: spam judgment control unit

440: spam host database 450: spam host control unit

460: call transaction unit 470: message transmission unit

Claims (13)

Measuring a duration of an incoming call by a network device receiving a call establishment signal requesting call establishment with a called terminal; Delaying the call setup signal to the called terminal by the network device until the duration becomes a preset threshold; And If the call setup request is interrupted before the duration becomes the preset threshold, the network device sends information on the calling telephone number of the call setup signal and information corresponding to the duration of the called terminal. And providing the user to the call processing method. The method of claim 1, The called terminal includes an internet telephone, And said network device comprises an internet telephony server. The method of claim 1, The called terminal includes a mobile communication telephone and a landline telephone, And said network device comprises a switch. delete The method of claim 1, wherein the providing step, And providing, by the network device, a message including the information on the calling telephone number of the call setup signal and the information corresponding to the duration to the called terminal through a short service center. Way. The method of claim 1, Estimating the number of rings at the called terminal corresponding to the duration; And the information corresponding to the duration includes the estimated number of rings. The method of claim 1, wherein the preset threshold is Call processing method characterized in that the time is determined according to the average number of rings of the spam missed call. The method of claim 1, wherein the preset threshold is And a duration of an incoming call that generates one ringing time. The method of claim 1, The user of the called terminal receiving the information on the calling telephone number and the information corresponding to the duration, the mapping relationship between the calling telephone number and the telephone number of the called terminal is sent to the spam registration server through the access terminal. Requesting registration; Storing, by the spam registration server, the mapping relationship in which the registration request has been requested in a spam database; And If the network device or another network device is requested to set up a call matched with an entry in the spam database, blocking the matched call setup. 10. The method of claim 9, And the access terminal is the called terminal. Measuring a duration of an incoming call by a network device receiving a call establishment signal requesting call establishment with a called terminal; Delaying the call setup signal to the called terminal by the network device until the duration becomes a preset threshold; And If the call setup request is interrupted before the duration becomes the preset threshold, the network device sends a mapping relationship between the calling telephone number and the called telephone number of the call setup signal to the first database through the spam registration server. Registering; Requesting a user of the called terminal to access a spam registration server through an access terminal to register a selected entry among the entries of the first database to a second database; Registering, by the spam registration server, the registration requested entry with the second database; Blocking the matched call setup when the network device or another network device is requested to set up a call matched with an entry in the second database. The method of claim 11, wherein registering with the first database comprises: Estimating the number of rings at the called terminal corresponding to the duration, binding the mapping relationship and the estimated number of rings, and registering them in the first database. . Measuring a duration of an incoming call by a network device receiving a call establishment signal requesting call establishment with a called terminal; Delaying the call setup signal to the called terminal by the network device until the duration becomes a preset threshold; And And transmitting the call setup signal to the called terminal when the duration exceeds the preset threshold.

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