KR100316312B1 - An Internet Phone Telecommunication System by using Personal Internet Telephone Server - Google Patents

Abstract

According to the present invention, a computer of one client and the other telephone are connected to the Internet and the PSTN through a personal Internet telephone server which is easily personally established and performs a gateway function without an internet telephone server commercially established by an Internet telephone service provider. The present invention relates to an internet telephone call system using a personal Internet telephone server of a PC-to-Phone type, which enables a telephone call to be made through a voice input / output device (110) (210) for voice input / output of a caller; An Internet connection unit 120 or 220 configured as a communication device capable of accessing the Internet 300; GUI processing unit (130) 230 for implementing a user interface of the Internet telephone; Call processing modules 141 and 241 for establishing and controlling a communication line for Internet telephony, and voice data transmission modules 142 and 242 for processing the voice data of the caller to be transmitted to the receiver for data transmission. Connection unit 140 and 240 including a voice data receiving module 143 and 243 for recovering and outputting data transmitted from the transmitting voice data transmitting module to original voice data; Internet telephony means including the central processing unit 150, 250 for controlling and managing the respective parts, each consisting of InterDev client 100 and InterDev server 200, the Internet telephone of the InterDev server 200 The PSTN interworking unit 260 for interworking the Internet 300 and the PSTN 400, and the PSTN interworking system for interworking the Internet 300 and the PSTN 400 at the request of the connecting agent 240 are included in the call means. PSTN interlocking control unit 270 to control the unit 260 is characterized in that the telephone call between the InterDev client 100 and the telephone 500 connected to the PSTN interlocking unit 260 of the InterDev server 200 is characterized in that the call. .

Description

An Internet Phone Telecommunication System by Using Personal Internet Telephone Server

The present invention relates to an internet telephony call system in which a telephone call is made through the Internet. In detail, the present invention relates to an internet telephony system that is easily personally established without performing a gateway function by an internet telephony service provider. The present invention relates to an Internet telephony system using a PC-to-Phone personal Internet telephony server that allows a computer of one client and another telephone to make a telephone call via the Internet and a PSTN through a personal Internet telephony server.

In recent years, an internet phone that can make a phone call at a low price using the Internet has been developed and utilized. Internet phones are largely divided into PC-to-PC, which is a telephone call through a computer and a computer, PC-to-Phone, which is a computer and a telephone, and Phone-to-Phone, which is a telephone and a telephone. Internet telephones can lower call costs than telephones using public switched telephone networks (PSTN) because they use the public Internet, which uses packet transmission, compared to public telephone networks that use line transmission. The packet transmission method used in the public Internet does not use a specific line exclusively like the circuit transmission method. Instead, the data to be transmitted is divided into several packets and placed on the transmission line so that the packets reach the destination through the fastest path. As a method, a transmission line is mixed with packets sent by multiple users, which allows a plurality of users to share a circuit at the same time, thereby providing a service at a lower price than a circuit transmission method having a monopoly.

In the case of the PC-to-Phone, the Internet has a gateway function for controlling voice data transmission by interworking the Internet, which is the communication line of the PC, and the PSTN, which is the communication line of the phone. A telephone server is required, which is typically produced by an internet telephony service provider and provided to clients wishing to make an internet telephony call.

However, since the Internet telephone server provided by the Internet telephone service provider controls not only a small number of telephone calls but also a large number of telephone calls simultaneously, the more clients using the Internet telephone server, the more delayed and lost voice data is used. There was a problem that the degree of increase is inevitably increased, and since the Internet phone server is provided for commercial purposes, clients have to pay for the use of the Internet phone server.

In order to solve the above problems, a telephone communication system using the Internet of Korean Patent Registration No. 10-0250930 (registration date 2000.01.07) has been proposed, which is an Internet telephone server provided by a conventional Internet telephone service provider. Internet phone call is made through a personally established 1-channel gateway without going through the system.The input and output terminals of the sound card and PC phone card are connected to each other through a mono cable and data transmission between the remote phones By constructing the gateway to control through the Internet phone and the Internet phone, the Internet phone gateway of the PC-to-Phone concept is implemented. The registered patent solves the above-mentioned problem to some extent by providing a client to make an internet phone call by personally establishing a gateway without going through an internet phone server provided by an internet phone service provider.

However, the above-described patent is complicated by the configuration of the sound card and the PC phone card to be connected by a mono cable equipped with a sound pressure booster and a sound source filter in order to establish a gateway for interworking the Internet and the PSTN. Since it operates in an environment in which a web server such as an Orelley company's website or CSM's Alibaba is installed, there is a problem in that the web server must be installed in order to install the remote phone.

In addition, since the gateway is used as a small office and home 1-channel gateway, the gateway itself needs to be equipped with an Internet telephony means to enable PC-to-PC Internet telephony.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a personal Internet telephone server that performs a one-channel gateway function that is established without requiring the installation of a conventional web server in an existing computer. The present invention provides an internet telephony system for making a telephone call between a computer of one client and another telephone.

It is still another object of the present invention to provide a personal Internet telephony server having a gateway function for interworking the Internet and a PSTN according to the above object, and performing a PC-to-PC telephone call directly with a client computer.

1 is a block diagram of an Internet telephony call system of the InterDev client-to-Phone method according to an embodiment of the present invention;

2 is a block diagram illustrating an InterDev client in an InterDev client-to-phone method according to an embodiment of the present invention;

3 is a block diagram illustrating an InterDev server in an InterDev client-to-phone method according to an embodiment of the present invention;

4 is a flowchart illustrating a telephone call setup process in an InterDev client-to-phone method according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: InterDev client 110, 210: voice input and output device

120, 220: Internet access unit 130, 230: GUI processing unit

140, 240: connection agent 141, 241: call processing module

142, 242: voice data transmission module 143, 243: voice data reception module

150, 250: central processing unit 200: InterDev server

260: PSTN interlocking part 270: PSTN interlocking control

300: Internet 400: PSTN

500: phone

In order to achieve the above object, the Internet telephone call system using the personal Internet telephone server of the present invention comprises: a voice input / output device for voice input / output of a caller; An internet connection unit comprising a communication device capable of accessing the Internet; A GUI processor which implements a user interface of the Internet telephone; A call processing module for establishing and controlling a communication line for an internet telephone call, a voice data transmission module for processing the voice data of the caller to be transmitted to the receiver and transmitting the data to the receiver, and a voice data transmission module transmitted from the transmitter. A connecting agent comprising a voice data receiving module for restoring and outputting data to original voice data; InterDev client and InterDev server each provided with an Internet telephony means including a central processing unit for controlling and managing the respective parts, the Internet telephony means of the InterDev server includes a PSTN interworking unit for interworking the Internet and the PSTN, The PSTN interlocking control unit controls the PSTN interlocking unit so that the Internet and the PSTN can be interlocked at the request of the connecting agent. do.

The InterDev client and the InterDev (Internet Connected Device) of the InterDev server collectively refer to devices capable of internet communication such as a personal computer (PC), a personal digital assistant (PDA), and an internet home appliance. In an embodiment of the invention is implemented via a PC.

In addition, the InterDev client and the InterDev server having the above-described configuration may directly proceed with a PC-to-PC Internet telephone call.

The InterDev server with the above configuration does not require the installation of a separate web server such as Aureli's website or CSM's Alibaba in order to realize an internet telephone call, but is implemented using a program technology such as JAVA. The voice channel between the InterDev client and the InterDev server was applied through the Realtime Transfer Protocol (RTP) processing technology using the program technology such as Java, and the connection method and call processing between the Internet and the PSTN for the gateway function. The method is implemented using program technology such as Java and modem control technology.

Hereinafter, an embodiment of an internet telephony call system using a personal internet telephony server of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION An embodiment of an InterDev client-to-phone Internet telephony system in which an InterDev client and a telephone make a telephone call via an InterDev server according to an Internet telephony method, and directly between an InterDev client and an InterDev server. The following description will be divided into an embodiment of an Internet telephony system of an InterDev client-to-InterDev server method in which a call is made.

[InterDev Client-to-Phone Embodiment]

In the InterDev client-to-phone Internet telephony system, when the InterDev client requests the InterDev server to make a telephone call with the telephone, the InterDev server establishes a communication line between the InterDev client and the telephone. .

FIG. 1 illustrates an InterDev client-to-phone Internet telephony system in which an Internet telephony call is made between an InterDev client and a telephone via an InterDev server according to an embodiment of the present invention. FIG. 2 is a schematic diagram of an InterDev client. Fig. 3 is a block diagram showing the configuration, and Fig. 3 is a block diagram showing the schematic configuration of the InterDev server.

As shown in FIG. 1, the InterDev client-to-phone type internet telephony system includes an InterDev client 100 requesting a InterDev server 200 to make a phone call with the telephone 500 through the Internet 300. InterDev server 200 and the InterDev server 200 connected to the PSTN 400 to establish and control a telephone call between the InterDev client 100 and the telephone 500 according to the request of the InterDev client 100. The telephone 500 is configured.

The InterDev client 100 for an Internet telephony call is implemented as a computer having a network function for connecting to the Internet 300 and an Internet telephony means for performing a telephone call on the Internet. As described above, the InterDev client 100 implements a voice input / output device 110 through which voices between callers are input and output, an Internet connection unit 120 for establishing a communication line for accessing the Internet, and a user interface of an Internet telephone. It includes a GUI processing unit 130, a connection agent 140 for controlling the transmission and reception of voice data so as to perform an Internet telephone call, and a central processing unit 150 for controlling and managing the above-mentioned parts.

The voice input / output device 110 includes a microphone 111 which is a voice input device for inputting a voice of a caller to be converted into a voice data signal, and a speaker which is a voice output device for outputting voice of the other caller who performs a phone call ( 112, the Internet access unit 120 is a communication device that allows the InterDev client 100 to be connected to the Internet 300 to perform an Internet telephony call, such as a LAN or a modem. It can be easily implemented through.

The GUI processor 130 provides a user interface of a graphical environment through a computer output device (monitor) so that the client can request, proceed, and terminate a telephone call, and the client provides a computer input device (keyboard or mouse, etc.). It plays a role of performing related functions to handle the caller's requirements (eg, call request, volume control, call termination). Although not shown in the drawing, the GUI processing unit 130 is connected to the computer input / output device through the central processing unit 150.

The connection agent 140 is implemented as software for controlling data transmission and reception between the InterDev client 100 and the InterDev server 200 through the Internet 300, the connection agent 140 is a telephone call A call processing module 141 for establishing and controlling a communication line with a desired counterpart, and a voice data transmitting module 142 for processing the voice data input through the voice input device to be suitable for internet transmission and transmitting the data to the receiver. And a voice data receiving module 143 for recovering the data transmitted from the transmitting side to the original voice data and outputting the original voice data to the voice receiving apparatus.

The call processing module 141 connects a communication line to a transmitting side and a receiving side to control an Internet telephone call. The functions provided through the call processing module 141 include an automatic dialing function, a call setting, and It performs call connection function, call termination function and call status monitoring function. When the voice data of the caller is input through the voice input device, the voice data transmitting module 142 compresses and packetizes the voice data and transmits the packet to the receiving voice data receiving module, and the voice data receiving module 143 receives the voice data. It restores the compressed data packet, decompresses it, restores the original voice data, and transmits it to the audio output device.

The connection agent 140 according to an embodiment of the present invention is implemented through a real-time transfer protocol processing technology using Java technology, so that a voice channel is allocated between an InterDev client and an InterDev server, thereby real-time Internet telephony. Is provided to enable.

In addition to the above-described configuration of the InterDev client 100, the InterDev server 200 may interwork with the PSTN 400 and the PSTN 400 for interworking the PSTN 400 and the Internet 300. A PSTN interworking controller 270 is further configured to control the unit 260 to establish and control a communication line between the InterDev client 100 and the telephone 500.

As shown in FIG. 3, the InterDev server 200 for Internet telephony calls includes a voice input / output device 210 through which voice is input and output, and an Internet connection unit 220 for establishing an Internet communication line so as to be connected to the Internet 300. ), A GUI processor 230 for implementing a user interface of the Internet telephone, a connection agent 240 for controlling transmission and reception of voice data so as to perform an internet telephone call, a PSTN 400 and the Internet ( The PSTN interworking unit 260 for interworking 300 and the PSTN interworking unit 260 are controlled at the request of the connecting agency 240 to establish and control a call line between the InterDev client 100 and the telephone 500. And a central processing unit 250 for controlling and managing the respective units.

The voice input / output device 210 is an apparatus in which the InterDev server 200 is provided for direct communication with the InterDev client 100. The voice input / output device 210 is applied to the InterDev client-to-InterDev server embodiment described below.

The PSTN interworking unit 260 interworks with the Internet 300 and the PSTN 400 so that the InterDev client and the general telephone 500 can conduct a telephone call, and the packet between the InterDev client 100 and the InterDev server 200. InterDev client 100 by converting voice data transmitted in the form into data suitable for PSTN transmission to the phone 500 or vice versa by converting the PSTN transmission data into data transmitted in the Internet. ) And a telephone call between the telephone 500 and the mobile phone 500. However, in the exemplary embodiment of the present invention, a haze modem or a voice modem is implemented, but this may be performed by other devices capable of performing the same function. For example, the hardware may be implemented on a computer board to perform the above functions, or may be implemented through a general modem. In addition, depending on the type of modem, full-duplex, which is a characteristic of telephony, may not be performed, and only half-duplex may be supported. In this case, the modem may be calibrated for voice. The PSTN interworking unit 260 may be connected to the voice input / output device 210 provided in the InterDev server 200 through a voice corrector to implement full duplex communication. That is, a PSTN interworking unit capable of full-duplex communication by connecting a voice corrector having a function of correcting voice, such as removing noise and removing echoes, between the voice input and output device 210 such as a sound card and a modem ( 260) can be configured.

The PSTN interworking controller 270 controls the PSTN interworking unit 260 at the request of the connecting agent 240 to establish an Internet communication line established between the InterDev client 100 and the InterDev server 200. 400 is connected to the communication line serves to control the phone call between the InterDev client 100 and the phone 500. The PSTN interworking controller 270 according to an embodiment of the present invention uses a voice modem of the PSTN interworking unit 260 described above to perform a program such as Java for network connection and call processing between the Internet 300 and the PSTN 400. Technology and modem control technology are applied. In addition, the PSTN interworking controller 270 monitors the state of the set call and outputs it to the GUI environment on the caller's screen when there is a state change of the call.

The connection agent 240 establishes a communication line with the InterDev client 100 via the Internet 300, and transmits and controls voice data through the Internet 300 between the InterDev client 100 and the InterDev server 200. It is implemented by software with real time transmission protocol processing technology. The connection agent 240 sets up and controls a communication line between the InterDev client 100 and the InterDev server 200, which desires a telephone call, similarly to the connection agent 140 of the InterDev client 100 and the PSTN interworking controller. A call processing module 241 for requesting a PSTN connection to the 270, a voice data transmission module 242 for processing the data to be suitable for internet transmission, and transmitting the data to the InterDev client 100, and an InterDev client 100 And a voice data receiving module 243 for recovering and outputting data transmitted from the original voice data. However, unlike the connection agent 140 of the InterDev client 100, the connection agent 240 inputs the voice data to the PSTN 400 from the telephone 500 of the other caller connected to the communication line instead of the microphone 211. PSTN interlocking unit 260 and PSTN interlocking control unit 270 via the PSTN interlocking control unit 270 and the PSTN interlocking control unit 270 and the PSTN interlocking unit 260 instead of the speaker 212 via the PSTN ( Outputs to the handset of the telephone 500 via 400.

That is, the call processing module 241 of the connection agent 240 establishes an internet communication line between the InterDev client 100 and the InterDev server 200, and then establishes a communication line with the telephone 500 in the PSTN interworking controller 270. When the communication line is connected between the InterDev client 100 and the telephone 500 through the PSTN interworking unit 260, the voice data transmission module 242 receives voice data from the telephone 500 and receives the InterDev client. The voice data receiving module 243 performs a function of outputting the voice data received from the InterDev client 100 to the telephone 500, between the InterDev client 100 and the telephone 500. The phone call is in progress.

In addition to the above-described transmission and reception control of voice data, various other functions are implemented in software and added to the connection agent 140 and 240 of the InterDev client 100 and the InterDev server 200. For example, an Internet telephone call method by transmitting and receiving a voice file filed on May 26, 2000, filed with a Korean patent (Application No. 10-2000-0028679) by the present applicant may be added as an additional function to the present invention. . The internet phone call method by transmitting and receiving the previously filed voice file is a voice caller's voice when the voice of the other party's voice is not clearly recognized due to a poor transmission rate of voice data via the Internet during an internet phone call. By providing a method of recording, storing, transmitting, and playing the received voice file, accurate communication between callers is provided continuously. Accordingly, the call quality monitoring unit for monitoring the voice data rate, the call mode switching unit for switching the call mode, and the file for the phone call to be stored and transmitted after storing the voice file for the Internet telephone call method by transmitting and receiving the voice file. The transmission call unit is implemented in software and applied to the connection agent unit 140 and 240 in addition.

In addition, the connection agent 140, 240 may include a call security module that prevents illegal eavesdropping by encrypting and transmitting voice data when security is required for the contents of the Internet telephone call. The encryption of the voice data and the restoration of the encrypted voice data according to the call security module may be provided by a general encryption technique, and the encryption of the voice data may be set at the beginning of a call or under the control of both parties during a call. May be required or terminated.

In addition, the connection agent 140, 240 may include a call recording module for storing the contents of the phone call under the control of the caller, InterDev a telephone information database for storing information on the Internet phone call Built separately in the internal memory or external memory of the client or InterDev server, and stores the call records such as call start time, call end time, and number of calls according to the internet phone call, and records the contents of the call. It can be easily understood by those of ordinary skill in the art that it can be reproduced by control.

Next, a telephone call process between the InterDev client 100 and the telephone 500 via the InterDev server 200 in the InterDev client-to-phone method having the above configuration will be described in detail with reference to FIG. 4. 4 is a view illustrating a process in which a telephone call is made by the InterDev client 100 and the telephone 500 via the InterDev server 200, and the InterDev client is described before describing the telephone call process according to an embodiment of the present invention. The 100 and the InterDev server 200 are provided with the above-described Internet telephony means and are connected to the Internet 300, and the address information (IP address or domain address) of the InterDev server 200 which is desired to make a telephone call. It starts with what the caller of the InterDev client 100 knows.

According to the present invention, the process of making an Internet telephone call is performed in the first step, in step S100, the InterDev client 100 accesses the InterDev server 200 through the Internet 300 to establish an Internet connection between the InterDev client 100 and the InterDev server 200. After setting the communication line via the 300, in step S110, if the telephone number of the telephone 500 desired for the telephone call is input to the GUI screen provided on the monitor through the GUI processing unit 130, the inputted number is entered. The phone number is transmitted to the connection agent 240 of the InterDev server 200 in step S120.

When the telephone request is received from the InterDev client 100, the connection agent 240 of the InterDev server 200 displays the dialing state according to the telephone call application on the GUI screen in step S130, and actually in step S140. In order to establish a communication line between the InterDev server 200 and the phone 500, the PSTN interworking controller 270 requests to establish a communication line with the phone 500. When the PSTN interlocking control unit 270 calls the corresponding telephone number via the PSTN 400 through the PSTN interlocking unit 260 according to the dialing request of the connecting agent 240 in step S150, the phone number called in the step S160 The phone 500 corresponding to the answer.

If the communication line is established via the PSTN 400 by the phone 500 and the PSTN interworking unit 260, which are called in step S170 through all the above processes, the connected communication line is a step S180, step S190, step S200, By connecting to the InterDev client 100 through step S210, a communication line for a telephone call is established between the InterDev client 100 and the telephone 500. In this case, voice data is transmitted and received through the connected communication line, thereby interdev client 100 ) And a telephone call between the phone 500 is performed.

The voice data according to the telephone call is transmitted through the Internet 300 between the InterDev client 100 and the InterDev server 200 and through the PSTN 400 between the InterDev server 200 and the telephone 500. That is, the voice data input through the voice input device of the InterDev client 100 is converted into compressed and packetized digital data through the voice data transmission module 142, and is then converted into digital data through the Internet 300. The voice data receiving module 243 of the InterDev server 200 restores the received data to the original voice data, and then the PSTN interworking controller 270 and the PSTN interworking unit 260 are transmitted to the voice data receiving module 243. ) Is converted into analog data suitable for PSTN transmission and transmitted to the handset of the telephone 500. In addition, the voice data input through the handset of the telephone 500 is transmitted to the InterDev server 200 via the PSTN 400, and the PSTN interworking unit 260 and the PSTN interworking control unit 270 of the InterDev server 200 are transmitted. And the voice data transmission module 242 is converted to the data of the form suitable for the Internet transmission is transmitted to the InterDev client 100 is to proceed the Internet phone call.

In the above-mentioned phone call process, when the call between the two callers is completed, the call is terminated through the call connection termination process of the InterDev client 100.

[InterDev Client-to-InterDev Server Embodiment]

As described above, in the InterDev client-to-phone type internet telephony system, the telephone call between the InterDev client 100 and the telephone 500 is performed through the InterDev server 200. In another embodiment of the present invention, the InterDev client-to-InterDev server type internet telephony system directly makes an internet telephony call between the aforementioned InterDev client 100 and the InterDev server 200.

The system configuration for the InterDev client 100 and the InterDev server 200 to directly conduct an internet phone call is configured in the same manner as the InterDev client-to-phone system. That is, the above-described InterDev client-to-Phone system is applied to the InterDev client-to-InterDev server system as it is, and the Internet telephone call proceeds. However, in the InterDev client-to-InterDev server method, the InterDev client 100 and the InterDev server Since the telephone call of the 200 proceeds directly through the Internet 300, the PSTN interworking controller 270 and the PSTN interworking unit 260 of the InterDev server 200 for interworking the PSTN 400, which is the communication line of the telephone 500, are connected. ) Does not apply to this InterDev client-to-InterDev server system.

In addition, the call processing module 241 of the connection agent 240 provided in the InterDev server 200 establishes a communication line with the InterDev client 100 through the Internet 300, and the voice data transmission module 242 The voice data is received from the voice input device 211, not the phone 500, and transmitted to the InterDev client 100, and the voice data receiving module 243 transmits the voice data received from the InterDev client 100 to the voice output device ( 212) to control the telephone call between the InterDev client 100 and the InterDev server 200.

Hereinafter, an internet phone call process between the InterDev client 100 and the InterDev server 200 having the above configuration will be described in detail. Prior to describing the present invention, the InterDev client 100 and the InterDev server 200 are provided with the above-described Internet telephony means and are connected to the Internet 300, and the InterDev server 200 wishes to make a telephone call. The address information (IP address or domain address) starts from what the caller of the InterDev client 100 knows.

First, when the InterDev client 100 accesses the Internet 300 and requests the Internet telephone call from the InterDev server 200, the InterDev server 200 receiving the request for the telephone call is the call processing module 241 of the connection agent. By performing call connection processing through the communication line between the InterDev client 100 and the InterDev server 200 is established.

When the communication line is established through the call processing module 241, the caller of the InterDev client 100 and the InterDev server 200 transmits voice data of the voice input / output device 110, 210 and the connection agent 140, 240. Performs a telephone call under the control of the receiving module 142, 143, 242, 243, and terminates the call connection through the call processing module 141, 241 when the call between each other ends. Is terminated.

Similar to the InterDev client-to-phone method and the InterDev client-to-InterDev server method as described above, the phone-to-phone method can be used to make an internet phone call between the phone and the phone using the InterDev server 200. . In the phone-to-phone method, an InterDev server 200 connected to both phones is provided, respectively, and voice data is transmitted and received through the PSTN 400 between the phone and the InterDev server, and the InterDev server and the other phone connected to one phone are connected. Internet data communication is performed by transmitting and receiving voice data through the Internet 300 between the InterDev servers.

As described above, a telephone call may be made on the Internet through the InterDev client 100 and the InterDev server 200. The InterDev server 200 is a voice input / output device 210, a GUI processor 230, a connection agent 240 to a device having a network function, such as a general personal computer or PDA, Internet home appliances equipped with a communication function, Just having the PSTN interlocking control unit 270 and the PSTN interlocking unit 260 can be simply configured and can be usefully used for general personal users. In addition, the InterDev client 100 and the InterDev server 200 are not configured separately, but are configured in the same way as the InterDev server 200 to request a telephone call to the InterDev client 100, and to receive a telephone call to the InterDev server ( 200) can be operated.

As described above, an Internet telephony call system using a personal Internet telephony server according to the present invention is easily personally constructed using a network device such as an existing computer without passing through an internet telephony server provided by an internet telephony service provider. It is possible to make a telephone call between the computer of one client and the other telephone through a personal Internet telephone server that performs a gateway function, thereby eliminating the trouble of connecting to the Internet telephone server, and using the Internet telephone server. There is no need to pay for the Internet phone call at an affordable price is effective.

In addition, the personal Internet phone server is not used to connect to a large number of users, but is used by a small number of individuals, so there is little traffic, so the delay and loss of voice data according to the Internet phone call are good. .

Claims (5)

In the Internet telephone call system that makes a telephone call via the Internet, Voice input / output devices 110 and 210 for voice input and output of a caller; An Internet connection unit 120 or 220 configured as a communication device capable of accessing the Internet 300; GUI processing unit (130) 230 for implementing a user interface of the Internet telephone; Call processing modules 141 and 241 for establishing and controlling a communication line for Internet telephony, and voice data transmission modules 142 and 242 for processing the voice data of the caller to be transmitted to the receiver for data transmission. Connection unit 140 and 240 including a voice data receiving module 143 and 243 for recovering and outputting data transmitted from the transmitting voice data transmitting module to original voice data; It consists of the InterDev client 100 and the InterDev server 200, each provided with the Internet telephony means including a central processing unit 150, 250 for controlling and managing the above-mentioned parts, The Internet telephony means of the InterDev server 200 includes a PSTN interworking unit 260 for interworking the Internet 300 and the PSTN 400, and the Internet 300 and the PSTN (at the request of the connecting agent 240). A phone 500 connected to the PSTN interlocking unit 260 of the InterDev client 100 and the InterDev server 200 includes a PSTN interlocking control unit 270 that controls the PSTN interlocking unit 260 so that the 400 can interwork. Internet phone call system using a personal Internet phone server, characterized in that the call is made with. The personal Internet telephony server according to claim 1, wherein the PSTN interworking unit 260 comprises any one of a modem and a voice modem for mutual conversion between the Internet and the transmission data format of the PSTN 400. Internet telephony system using. The method of claim 1, wherein the connection agent 140, 240 stores the voice data to be transferred to a file when the voice quality of the telephone cannot be clearly recognized by the other party during the internet telephone call. Internet telephony system using a personal Internet telephony server, characterized in that the file transmission call module for continuous Internet telephony call proceeds by outputting the transmitted and received voice file. The method of claim 1, wherein the connection agent 140, 240 encrypts the voice data in case of a telephone call requiring security, and transmits the encrypted voice data to the counterpart through the voice data transmission module 142,242. 143) (243) Internet phone call system using a personal Internet phone server, characterized in that it includes a call security module for decoding and outputting the encrypted voice data received. The Internet telephone call system using a personal Internet telephone server according to claim 2, wherein the modem or voice modem of the PSTN interworking unit 260 is connected to the voice input / output device 210 through a voice corrector for correcting voice. .