KR100385860B1 - Caller Identification Method Using Public CA In The PC-To-Phone Environment - Google Patents

Abstract

The present invention relates to a method of identifying a caller in a telephone call, the method of identifying a caller in a telephone call through an internet network between a calling party PC certified by a certification authority and a recipient telephone having a CID function. A first step of making a call request to a called telephone at the call; In response to the call request, the gateway checking the sender's certificate through an authentication authority connected to the Internet network, and performing the caller authentication through the exchange of encrypted data with the caller; A third step of, when caller authentication is performed, the gateway converts the caller identification information extracted from the certificate into a CID and transmits the same to the receiver; And a fourth step of displaying the transmitted CID data on the display means. The calling party's identification information is displayed when the recipient telephone makes a call from the PC to the telephone having a CID function. By being transmitted to the receiver and displayed or stored, the caller's information is stored in the telephone even when the receiver is absent, and the selective reception of the telephone violence can be made.

Description

Caller Identification Method Using Public CA In The PC-To-Phone Environment}

The present invention relates to a caller identification method, and more particularly, to a caller identification method using an accredited certification authority in a PC-to-phone environment. The present invention relates to a method for preparing for phone violence by allowing a user to check an incoming call or to selectively receive a call.

If you are using a regular phone, it is not possible to identify the caller before making a direct call. However, with the development of communication devices, the installation of telephones with an answering machine or an answering machine is increasing in offices or homes. Also, a display device is attached so that the caller's telephone number is displayed to identify the caller. Telephones are being developed and commercialized.

Korean Patent Registration No. 10-0247067 (Invention: "Method of Receiving Selecting Incoming Message Using Caller Identification Information in Device with Automatic Response Function"), which Samsung Electronics is the patent holder, has a telephone number for receiving incoming message selection. Registering the received message and detecting caller identification information carried on the idle period of the ring signal when the ring signal is detected and set to the incoming message selection reception mode; Disclosed is a method for blocking unwanted incoming message in advance by sending an outgoing message to a calling party when receiving is possible and receiving and recording an incoming message.

However, according to the popularization of the Internet, various communication means using the Internet network have been developed and developed. As one of them, there is a telephone service using the Internet network, which is commonly referred to as an 'Internet phone'.

In general, Internet phone services can be used free of charge compared to general telephones, so they are likely to be used for phone violence such as prank calls and pornographic calls. In addition, since the service provider does not go through the authentication process for the user information to be entered at the time of registration, it is difficult to track the user who performed the phone violence in case of false input.

The present invention is a case where a user registered with an accredited certification authority makes a phone call using an Internet phone with a CID (Caller ID) function so as to effectively cope with the telephone violence using the Internet phone generated in the above-described prior art. It is an object of the present invention to provide a caller identification method capable of identifying a caller so that a receiver can selectively receive a call.

1 is a configuration diagram of a PC-to-phone network to which a caller identification method using an authorized certification authority according to an embodiment of the present invention is applied;

2 is a flowchart illustrating a phone call process in a PC-to-phone environment according to an embodiment of the present invention;

3 is a flowchart illustrating a caller identification process in a caller identification method using an accredited certification authority according to an embodiment of the present invention.

According to a method for identifying a caller in a telephone call through an internet network between a caller PC certified by a certification authority for achieving the above object and a receiver phone having a CID function, a call request is made from the caller PC to the receiver telephone. Stage 1; In response to the call request, the gateway checking the sender's certificate through an authentication authority connected to the Internet network, and performing the caller authentication through the exchange of encrypted data with the caller; A third step of, when caller authentication is performed, the gateway converts the caller identification information extracted from the certificate into a CID and transmits the same to the receiver; And a fourth step of displaying the transmitted CID data on the display means.

The features and further advantages of the present invention will become more apparent from the following detailed description of the invention. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention enables the receiver to selectively receive a call by identifying the identity of the Internet phone caller by using an accredited certification authority and displaying it on the receiver's phone, thereby easily coping with phone violence such as a prank call and an obscene call.

1 is a diagram illustrating a network for a caller identification method using a certification authority. As shown in the drawing, a general network configuration includes a caller 101, a receiver 102, a gatekeeper 103, a gateway 104, It consists of a certification body (105).

The caller 101 is a PC system registered with the gatekeeper 103 and calling a general telephone using an Internet phone, and a certificate issued from an authorized certification authority is already installed in the computer. The receiver 102 has a CID function as a telephone to receive an incoming call.

The gatekeeper 103 performs a function of changing a registered user ID into a transmission address, a user registration function, a call permission function, a bandwidth change function, a state maintenance function, and the gateway 104. It plays a role in delivering data flow between networks.

The accredited certification authority 105 is a system that performs certificate management such as issuance and revocation of a user's certificate.It is not an institution that is operated privately. Is appropriate.

2 is a diagram illustrating a process of making a phone call from a PC through the Internet to a general telephone according to a preferred embodiment of the present invention.

The caller 101 registers the user with the gatekeeper 103 (step 201) and makes a call permission request (step 202). If the gatekeeper 103 permits the call, a call is made to the desired telephone number (step 203), and the gatekeeper 103 calls the gateway 104 associated with the telephone number that the caller 101 has called ( Step 204). The called gateway 104 and the sender 101 send and receive control messages to each other. The control message exchange is appropriately subjected to encryption, which will be described later with reference to FIG. 3.

Next, when the gateway 104 answers the call to the receiver 102 (step 206), the voice of the caller 101 is converted into real-time protocol data and transmitted to the gateway 104 (step 207). 104 converts this to a voice signal and transmits it to the receiver 102 (step 208). On the contrary, the voice of the receiver 102 transmitted to the gateway 104 is converted into real-time protocol data and transmitted to the caller 101 to make a call between the caller 101 and the receiver 102.

3 is a flowchart illustrating a method for enabling caller identification using an authorized certification authority in a PC-to-phone environment according to an embodiment of the present invention. This process follows "step 205" in FIG.

When the sender 101 transmits its ID and certificate to the gateway 104 (step 301), the gateway 104 checks the validity period of the certificate and whether the certificate is included in the certificate revocation list, and so on. Is validated (step 302).

The gateway 104 generates a random number (step 303), then extracts the public key of the sender 101 from the certificate, encrypts the random number (step 304), and sends it to the sender 101 (step 305). .

Caller 101 decrypts the encrypted random number sent from gateway 104 with its private key (step 306) and sends it back to gateway 104 (step 307).

The gateway 104 compares the random number generated by itself with the random number transmitted from the caller 101 (step 308), and if it is not the same, stops and ends the call. If the two random numbers are the same, the gateway 104 converts the identification information of the caller 101 into CID data (step 309).

The gateway 101 attempts to dial the recipient 102 (step 310) and sends the converted CID data to the receiver 102 (step 311). The telephone of the receiver 102 displays the received CID data on the display means, for example, the LCD window (step 312).

When the receiver 102 answers the caller's information transmitted as described above, a call is made between the receiver 102 and the caller 101 (step 314), and finally ends by hanging up the phone (step 315).

Optionally, if the receiver 102 does not respond, store caller identification information on the recipient telephone and terminate (step 316).

Through the caller identification process according to the present invention, when making a call from a PC to a phone with a CDI function using the Internet network, the caller's identification information is transmitted to the receiver for display or storage, so that the caller may be absent even when the caller is absent. Not only is the information stored on the phone, it is also possible to selectively receive calls for phone violence.

Claims (2)

A method of identifying a caller in a telephone call through an internet network between a caller PC and a caller's phone having a CID function, which are certified by a certification authority, A first step of making a call request from the calling party PC to a called telephone; In response to the call request, the gateway checking the sender's certificate through an authentication authority connected to the Internet network, and performing the caller authentication through the exchange of encrypted data with the caller; A third step of, when caller authentication is performed, the gateway converts the caller identification information extracted from the certificate into a CID and transmits the same to the receiver; And And the receiver telephone comprises a fourth step of displaying the transmitted CID data on the display means. The method of claim 1, And if the receiver telephone does not answer, storing the transmitted CID data in a storage means built in the receiver telephone.