KR20050006935A - Telephone conversating system using a prepay card and method for telephone conversating thereof - Google Patents

Abstract

PURPOSE: A phone call system and method using a pre-paid card are provided to allow users who are not much familiar with a computer to use an Internet phone at a low cost, especially when using an oversea call. CONSTITUTION: A pre-paid card charged with a certain amount of money is issued(S201). When a client requests a call, authentication is performed on the client(S202). When the client is successfully authenticated, a speech path is connected between a terminal of the authenticated client and a terminal of the other party(S203). A rate corresponding to the amount of traffic is calculated and charged(S204).

Description

Phone call system and phone call using prepaid card {TELEPHONE CONVERSATING SYSTEM USING A PREPAY CARD AND METHOD FOR TELEPHONE CONVERSATING THEREOF}

The present invention relates to a telephone call system and method, and in particular, through the issuance of a prepaid card recorded with a personal password, the telephone call is freely available through an ordinary telephone and a mobile communication terminal connected to a public telephone network as well as an internet telephone connected to an internet network with only one prepaid card. The present invention relates to a telephone call system and a telephone call method using a prepaid card.

The Internet, symbolized by the World Wide Web (WWW), has recently come into the spotlight, but the Internet has already promoted a new paradigm shift in human life in social, economic, and political terms, and life without the Internet is hard to imagine. The reality is that it is now recognized as part of life.

In addition, the development of information and communication technology, which is summarized by the word digital revolution, is causing a great change in the way of human life. The spread of personal computers and the explosive development of the Internet are based on the knowledge and information of e-commerce and e-business. It is bringing innovative changes to human life, such as changes in business, the vitalization of the cyber world through information sharing, and the role of new media to replace the press and broadcasting.

The use of the Internet is rapidly spreading with the development of computer communication technology and the increase of computer distribution, and the widespread use of the high-speed communication network. Various online commercialization through the internet is being activated without any restrictions.

In other words, due to the development of digital communication technology and the activation of the Internet, various goods and services that did not exist in the past are appearing in the virtual space called the Internet. As a result, the types and forms of services, such as payment of online expenses, are becoming very diverse. For example, the Internet telephony business which has recently been in the spotlight.

Internet phone calls are made between the calling subscriber and the called party by using the Internet network rather than the existing PSTN network. The service type is mainly called Phone-to-Phone, PC-to-PC, and PC-to-Phone. Among them, the PC-to-PC method allows a PC to be connected to a network through the Internet network, and the Phone-to-Phone method allows a calling subscriber and a receiving subscriber to connect to the Internet network using a general telephone. After connecting, you can talk to each other.

Lastly, the PC-to-Phone method is to visit the website of the ISP company, download the program, install it on the user's computer, enter the called party's phone number, press the call button, and then connect to a regular phone. .

Meanwhile, it is well known that a prepaid card filled with a predetermined amount of money is used to make a call using a general telephone or a mobile phone. This is a method of changing the balance of the prepaid card as much as the call volume after authenticating the prepaid card using the card number described in the prepaid card, and is used when making a call using a public telephone network such as a general telephone or a mobile phone.

In addition, a prepaid card can be used for an internet phone call using an Internet network, which is obtained by purchasing a prepaid card issued by a company that provides the Internet phone service, and accessing the server of the service company. There is a method of calling after authentication is completed.

However, when using a prepaid card as described above, the user has to be inconvenient to purchase a prepaid card for the Internet call and a prepaid card for the general telephone and mobile phone call separately.

In other words, since one prepaid card cannot use an internet call or a public telephone using a public telephone network in common, it is inconvenient to purchase and use a prepaid card for an internet phone and a prepaid card for a regular phone respectively. there was.

In addition, the Internet phone is not only troublesome for the user to purchase a headset, but also has a problem in that the procedure is complicated for users who are not familiar with the computer, and when the computer is turned off, the Internet phone cannot be used. There is a problem that the charge is expensive for international calls.

The present invention has been made to solve the above problems, a telephone call system and telephone call using a prepaid card that can be freely used in general telephones and mobile communication terminals, as well as Internet-only telephone with only one prepaid card with a personal password recorded The purpose is to provide a method.

1 is a block diagram of a telephone call system using a prepaid card according to a first embodiment of the present invention

2 is a flowchart illustrating a phone call method using a prepaid card according to a first embodiment of the present invention.

FIG. 3 is a flowchart for explaining FIG. 2 in more detail.

4 is a block diagram of a telephone call system using a prepaid card according to a second embodiment of the present invention.

5 is a flowchart illustrating a phone call method using a prepaid card according to a second embodiment of the present invention.

6 is a flowchart illustrating another example of a telephone call method using a prepaid card according to a second embodiment of the present invention.

7 is a configuration diagram of a telephone call system using a prepaid card according to a third embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

11: Internet Network 13: Public Telephone Network (PSTN)

100: client terminal 200: Internet phone operation server

200a: Gatekeeper 200b: Gateway

200c: authentication server 200d: billing server

200e: database 600: telephone room

700: public telephone terminal 703: manager terminal

800: general subscriber terminal

The telephone communication system using the prepaid card of the present invention for achieving the above object is a client terminal including a general subscriber Internet phone, an Internet public telephone, a general subscriber general telephone and a mobile communication terminal connected to the Internet network and public telephone network. An authentication server for authenticating a client using a personal password generated when issuing a prepaid card to a client according to a call request, and the client terminal when the client terminal and the counterpart terminal to which the client wants to talk are connected to the Internet network. A gatekeeper for connecting a call between the other terminal and a counterpart terminal, and when the client terminal and the counterpart terminal to which the client wants to talk are connected to each other in a heterogeneous network, the gatekeeper connects a call between the client terminal and the counterpart terminal. gay A billing server that calculates a fee in accordance with a tway, a call amount between the client terminal and the counterpart terminal, and changes the amount information of the prepaid card issued to the client in accordance with the settled fee, and a prepaid card issued to the client. Card number, personal password required for client authentication, characterized in that it comprises a database including the registered amount information.

On the other hand, the client authentication for the telephone call using a client terminal including the subscriber's Internet telephone and Internet public telephone connected to the Internet network and the public subscriber telephone and public telephone connected to the public telephone network in the telephone call system using the prepaid card Activating the issued prepaid card after issuing a prepaid card recorded with a personal password necessary for the client; authenticating the client using the personal password according to the client's call request; Requesting input of a telephone number of a terminal, checking balance information of a prepaid card issued to the client to confirm whether a callable amount is charged, and making a call between the client terminal and the counterpart terminal. connect Is a step, and wherein confirm the end of the call whether or not the client, and then settle the charges comprising the step of performing charging by subtracting the settlement amount from the balance of the prepaid card issued to the client.

In addition, the telephone call method according to another embodiment of the present invention includes the steps of confirming the identification information of the client terminal corresponding to the telephone call request through a plurality of client terminals installed in the telephone room connected to the Internet network and public telephone network; Requesting the client terminal to input a phone number of the other party's terminal, connecting a call between the client terminal and the other party's terminal, checking whether or not the client's call is terminated, and paying the fee Characterized in that it comprises the step of transmitting the calculated billing information to the administrator terminal installed in.

Hereinafter, a telephone call system and a telephone call method using a prepaid card of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a telephone call system using a prepaid card according to a first embodiment of the present invention.

As shown in FIG. 1, a telephone call system using a prepaid card according to a first embodiment of the present invention includes a plurality of client terminals 100 connected to an Internet network 11 and a public telephone network 13, and the Internet. Calls between client terminals 100 connected to the network 11 and the public telephone network 13 and connected to the Internet network 11 and between client terminals 100 connected to a heterogeneous network (Internet network-public telephone network). (I) is configured to include an Internet telephone operation server 200 to enable a call between the client terminal 100 by connecting.

Here, the client terminal 100 is an Internet telephone dedicated telephone (hereinafter referred to as an "Internet telephone") connected to the Internet network 11, and is connected to the public telephone network and the Internet public telephone and the public telephone network (PSTN). Includes connected general subscriber phones and mobile communication terminals.

The Internet phone operation server 200 is a gatekeeper (200a) for controlling the call connection between the client terminal 100 is connected to the Internet network 11 and the control of the gatekeeper (200a) Authentication to send a variety of announcements to the client terminal 100 and to perform a call conversion function between heterogeneous networks, and to authenticate the client by using a personal identification number (PIN). The server 200c, a billing server 200d for billing a fee corresponding to a call volume, and billing the settled bill, the prepaid card issuing information, that is, the card number, amount information of the issued prepaid card, and an individual required for client authentication. The password is configured to include a registered database 200e.

Here, the gatekeeper 200a controls a call connection between the client terminals 100 connected to the Internet network 11, and also calls between the client terminals 100 connected to the heterogeneous network. Control the gateway 200b that performs the conversion function.

The gateway 200b performs a call conversion function for connecting a call path between heterogeneous networks (internet phones and general telephones) under the control of the gatekeeper 200a. For reference, among the client terminals 100, the Internet phone has a gateway function for converting a voice signal into an IP signal and transmitting the voice signal to the Internet network 11 or converting an IP signal input through the Internet network 11 into a voice signal. It is. Therefore, in the call between the Internet phones, the gatekeeper 200a transfers the IP signal input from the calling Internet phone to the called Internet phone through the Internet network 11 as it is, and thus, the called Internet phone sends the IP signal. By converting into a voice signal, a call is made between Internet phones.

However, since a general telephone or mobile communication terminal connected to the public telephone network 13 is not equipped with a gateway function, a call conversion between the public telephone network 13 and the internet network 11 is required for a call with an Internet phone. The call conversion is handled by the gateway 200b in the Internet telephone operation server 200 of the present invention. That is, the gateway 200b converts the voice signal input from the calling general telephone or the mobile communication terminal through the public telephone network 13 into an IP signal and transmits the voice signal to the called Internet phone through the Internet network 11. By converting the IP signal output from the called party's Internet phone into a voice signal and transmitting it to the calling party's general telephone or mobile communication terminal through the public telephone network 13, the general telephone and mobile communication terminal connected to the public telephone network 13 and the Internet network A call is made with the Internet phone connected to (11).

For reference, when the calling party is an Internet phone and the called party is a general telephone and a mobile communication terminal, it is obvious that a call is made between the calling party and the called terminal through call conversion of the gateway 100d.

On the other hand, when the client wants to talk to the Internet phone by using the general telephone or the mobile communication terminal, a connection to the Internet phone operation server 200 of the present invention is made by pressing a specific identification number.

In addition, the gateway 200b sends various announcements for client authentication and connection to the client terminal 100 so that the client can make a call through authentication using a personal password under the control of the gatekeeper 200a. send.

For example, when a client wishes to make a call using an Internet phone, an on-hook signal of the Internet phone is detected by the gatekeeper 200a, and the gatekeeper 200a is connected to the gateway ( 200b) notifies the internet phone that there is a call request, and requests a message for requesting the gateway 200b to enter a personal password for client authentication and input of a called party's country code, area code, telephone number, etc. Guide announcements, etc. to be transmitted to the client terminal 100.

Meanwhile, the authentication server 200c authenticates the client by using a personal password (PIN) generated when issuing the prepaid card in response to a call request from the client terminal 100. That is, by authenticating the client by comparing the personal password input from the client terminal 100 with the registered information of the database 200e, the call is controlled so that only the authenticated client can make a call, and the billing server ( In 200d), the authentication result information is provided to the charging server 200d so that charging corresponding to the call amount can be made.

The billing server 200d, when an authenticated client makes a call using an Internet phone or makes a call using a general telephone or a mobile communication terminal, sets a fee in accordance with the amount of the call and charges by the settled fee. Change the amount information on the prepaid card.

The telephone call system using the prepaid card of the present invention configured as described above is an internet phone through a call conversion between the internet network 11 and the public telephone network 13 as well as a call between the Internet phones connected to the Internet network 11. By using the personal password generated when issuing the prepaid card, and authenticating and charging the fee according to the call volume of the client, The client can use the prepaid card's personal password to make an Internet phone call at a low call rate using an ordinary phone or a mobile communication terminal as well as an Internet phone.

Hereinafter will be described a phone call method using a phone call system using a prepaid card according to the first embodiment of the present invention configured as described above.

FIG. 2 is a flowchart illustrating a telephone call method according to the telephone call system using the prepaid card of the first embodiment of the present invention.

First, the call between the Internet phone according to the present invention is a step of issuing a prepaid card filled with a predetermined amount (S201), a client authentication step (S202) for authenticating the client according to the client's call request, and to the authenticated client Only the step (S203) of connecting the call path between the client terminal and the counterpart subscriber terminal period, and the step (S204) of calculating the charge corresponding to the call amount.

Here, in the prepaid card issuing step (S201), when the payment for the amount of money is completed online in response to the purchase request for the prepaid card of the client, the prepaid card provided to the client while simultaneously providing the prepaid card filled with the corresponding amount to the client. It includes the step of activating the Internet telephone operating server (200).

That is, the Internet phone operation server 200 has prepaid card issuance information, such as the card number of the prepaid card issued to the client, a personal password (PIN) for the client authentication, the amount information, and when the prepaid card is issued to the client By activating the issued prepaid card to the authentication server 200c and the billing server 200d, Internet telephone calls using the prepaid card can be made possible.

On the other hand, the client authentication step (S202), the communication path between the client terminal and the counterpart terminal (S203) and the charge settlement and billing step (S204) will be described with reference to FIG.

That is, as shown in Figure 3, in response to the call request from the client terminal 100, the step of authenticating the client through the client's own personal password (PIN), the gatekeeper of the Internet telephone operating server 200 If an on-hook signal of the client terminal 100 (in this case, the Internet phone) is detected (S301), 200a considers that the current client wants to use an Internet phone, and returns to the gateway 200b. Notify it. Accordingly, the gateway 200b transmits a message to the client terminal 100 to input a personal password generated when issuing the prepaid card for client authentication (S302).

When the personal password is input from the client terminal 100 in response to the personal password input request of the gateway 200b, the gatekeeper 200a transfers the personal password input from the client terminal 100 to the authentication server 200c. After this, the authentication server 200c compares the client's personal password received from the gatekeeper 200a with the personal password registered in the database to authenticate the client (S303), and as a result, the gatekeeper 200a. ), The client authentication is completed.

Thereafter, the gatekeeper 200a controls the gateway 200b so that client authentication is completed, so that a message for inputting a destination country code, area code, and phone number to be called is transmitted to the client terminal 100. (S304) Since the client authentication has failed, a message for re-entering the personal password is transmitted to the client terminal 100 (S305). At this time, when the client authentication fails to request re-entry of the personal password, it is preferable to repeat for a predetermined number of times.

Subsequently, when the called party country code, area code, and phone number are sequentially input from the client terminal 100 (S306), the gatekeeper 200a transmits it to the billing server 200d. Accordingly, the billing server 200d checks the prepaid card balance information of the client to determine whether the client can make a call with the desired country at the current amount (S307), and determines whether the call is possible or not through the gatekeeper 200a. To be informed.

Accordingly, when the balance currently charged in the prepaid card of the client is sufficient to make a call, the gatekeeper 200a finds the telephone number of the called terminal desired by the client to call and the client terminal 100 and the called side. A call is connected between terminals (here, Internet phones) (S308). For reference, when it is determined whether the call is possible, if a small amount is charged for the client to make a call with the desired country, the gateway 200b displays a message indicating that the call is not possible at the current amount. 100) (S309).

As such, when a call is connected between the client terminal 100 and the called terminal, the call is made from there (S310). The gatekeeper 200a calls between the client terminal 100 and the called subscriber terminal. By detecting the end (S311), if the end of the call is detected tells the billing server (200d) that the call is over.

Accordingly, the billing server 200d sets a fee corresponding to the call amount, and then performs billing by changing the amount information of the client prepaid card (S312).

The above description has been made in the case where the client terminal 100 and the called terminal are Internet phones connected to the Internet network 11, but in the following case, the client terminal 100 is a general telephone connected to the public telephone network 13; A call with a called terminal, which is an Internet phone, will be described.

The communication method between the client terminal, which is a general telephone, and the called party's terminal, which is an Internet phone, is not significantly different from the communication method between the Internet phones described above. However, in a call between Internet phones, the Internet phone itself is equipped with a gateway function for converting a voice signal into an IP signal or converting an IP signal into a voice signal, while a voice signal output from the general phone between the general telephone and the Internet phone. Is converted into an IP signal and output to the Internet network, and the call path is connected by a gateway that converts an IP signal input through the Internet network into a voice signal and delivers it to a general telephone connected to a public telephone network.

In addition, when the client terminal 100 is an Internet phone, the client is connected to the Internet telephone operation server 200 of the present invention at the moment of picking up the handset, but when the client terminal 100 is a general telephone or a mobile communication terminal, In order to access the Internet phone operation server 200, a specific identification number must be selected.

This will be described in more detail as follows.

As shown in FIG. 2, a call between a general telephone and an internet phone is also largely issued, at step S201 of issuing a prepaid card filled with a predetermined amount, and a client authenticating the client in response to a call request from the client terminal 200. The authentication step (S202), the step of connecting the call path between the client terminal 200 and the Internet terminal as the called terminal only for the authenticated client (S203), and the charges corresponding to the call volume (S204) First, in order to make a client call with an Internet phone which is a called party subscriber terminal connected to the Internet network 11 using a general telephone connected to a public telephone network (PSTN), the Internet telephone operation of the present invention Connection to the server 200 should be made.

Therefore, when a specific identification number for accessing the Internet telephone operation server of the present invention is selected in the client terminal (here, a general telephone), the selected specific identification number is transmitted to the server of the KT, and the server of the KT. In the identification number and confirms the identification number of the Internet telephone operating server of the present invention, the call is connected between the client terminal and the Internet telephone operating server 200 of the present invention.

Once the connection is established between the client terminal 100 connected to the public telephone network 13 and the Internet telephone operation server 200 of the present invention, the gatekeeper 200a has a call request from the client terminal 100. Notify the gateway 200b.

Accordingly, the gateway 200b transmits a message for inputting a personal password (PIN) required for client authentication to the client terminal 100 through the public telephone network 13.

When the personal password is input from the client terminal 100 in response to the personal password input request of the gateway 200b, the gatekeeper 200a transfers the personal password input from the client terminal 100 to the authentication server 200c. In this case, the authentication server 200c checks whether the personal password of the client received from the gatekeeper 200a matches the personal password registered in the database, authenticates the client, and then outputs the result to the gatekeeper 200a. To be informed.

Since the gatekeeper 200a controls the gateway 200b and the client authentication is completed, the gatekeeper 200a receives a message for inputting the called party country code, area code, and phone number through the public telephone network 13. 100), or because the client authentication failed, a message to re-enter the personal password is transmitted to the client terminal (100). At this time, it is preferable to repeat for a predetermined number of times when the client authentication fails to request re-entry of the personal password.

Subsequently, when the destination country code, area code, and phone number are sequentially input from the client terminal 100 in response to a request for inputting the country code, area code, and phone number of the gateway 200b, the gatekeeper ( 200a) transmits it to the charging server 200d. Accordingly, the billing server 200d checks the prepaid card balance information of the client, determines whether the client can make a call with the desired country at the current amount, and transmits the result to the gatekeeper 200a. .

At this time, as a result of determining whether the call is possible, if the amount enough to make a call is charged, the gatekeeper 200a finds the called party's telephone number input from the client terminal 100 and the called party's subscriber terminal and the client terminal. Connect arcs between (100). For reference, as a result of determining whether the call is possible, if a small amount is charged for the client to make a call with the desired country, the gateway 200b displays a message indicating that the call is not possible with the current balance. 100).

As such, when a call is connected between the client terminal 100 and the called terminal, the call is made from there. The gatekeeper 200a detects whether the call is terminated between the client terminal 100 and the called terminal. When the end of the call is detected, the charging server 200d notifies that the call is terminated.

Accordingly, the billing server 200d calculates a fee corresponding to the call amount and then performs billing by changing the amount information of the client prepaid card. For reference, when a call is made between the client terminal 100 and the called terminal, the gateway 200b converts a voice signal of the client input from the client terminal 200 into an IP signal and converts it into an Internet network 11. The client terminal 100, which is a general telephone, is transmitted to the called terminal through a call, and the IP signal input from the called terminal is converted into a voice signal and transmitted to the client terminal 100 through the public telephone network 13. ) And the caller's terminal, which is an Internet phone, are available.

Although the above embodiment has been described using an international call as an example, the domestic call is made in the same process. However, in the case of the domestic call, it is obvious that the process of selecting the called country code is omitted.

In the above description, the telephone call system and the telephone call method using the prepaid card according to the first embodiment of the present invention have been described, but in the following, even if a prepaid card or a prepaid card is not used in a telephone room equipped with several public telephones; A telephone call system and a telephone call method according to a second embodiment in which a telephone call can be made will be described.

That is, FIG. 4 shows a plurality of public telephone terminals 700, a public telephone telephone network (PSTN) 13 and the Internet installed in the telephone room 600 and connected to the Internet network 11 according to the second embodiment of the present invention. A plurality of general subscriber terminals 800 connected to the network 11 and a call for a call between the public telephone terminal 700 and the general subscriber terminal 800 are controlled, and the fee is settled according to the call volume. An administrator terminal for receiving and displaying billing information of each public telephone terminal 700 installed in the telephone room 600 from the internet telephone operation server 200 and installed in the telephone room 600. 703 is configured.

Here, the Internet telephone operation server 200 is composed of a gatekeeper 200a, a gateway 200b, an authentication server 200c, a billing server 200d and a database 200e as in the above-described embodiment, the telephone room Identification information of each public telephone terminal 700 installed in the 600 is registered in the gatekeeper 200a. Therefore, the billing server 200d may settle the fee of each public telephone terminal 700 based on the identification information, and provide the settled fee to the manager terminal 703, so that the client does not have a prepaid card. In addition, it is possible to make an internet phone call using the public telephone terminal 700.

On the other hand, the public telephone terminal 700 preferably includes an Internet-only telephone (Internet phone) connected to the Internet network 11 and a general public telephone connected to a public telephone network (PSTN) network. Therefore, when the payphone terminal 700 is an Internet phone, the client is directly connected to the Internet phone operation server 100 of the present invention when the client picks up the handset. However, when the payphone terminal 700 is a general public phone, the Internet is connected. In order to access the telephone operation server 100, a specific identification number should be selected.

When the public telephone terminal 700 is an Internet phone and the general subscriber terminal 800 is an Internet phone, the gatekeeper 100a makes a call by connecting a call between two Internet phones, but the public telephone terminal When 700 is a general public telephone and the general subscriber station 800 is an Internet phone, or the public telephone terminal 700 is an Internet phone and the general subscriber station 800 is a general phone, the gatekeeper ( Under the control of 200a, the gateway 200b converts a voice signal into an IP signal and provides it to an Internet phone, and converts the voice signal into a public telephone (or public payphone) by transmitting the IP signal to a public telephone. A call is made between them.

According to the second embodiment of the present invention as well as the client having a prepaid card as well as the client without a prepaid card can be seen that the Internet phone call using the public telephone terminal 700 installed in the telephone room. In this case, when the prepaid card is used, billing may be made by subtracting a fee corresponding to the call amount from the Internet telephone operation server 200 from the amount charged in the prepaid card, but when there is no prepaid card, the manager terminal ( The fee corresponding to the currency indicated in 703 is paid in cash. For reference, the second embodiment as described above may be more effectively used in foreigner dense areas.

Using the prepaid card according to the second embodiment of the present invention as described above will be divided into a case of calling with a public telephone terminal and a case without a prepaid card.

5 is a flowchart illustrating a phone call method according to a second embodiment of the present invention, in which a call is made to a public telephone terminal using a prepaid card.

As shown in FIG. 5, in response to a call request from a specific public telephone terminal 700 among a plurality of public telephone terminals 700 installed in a telephone room, the gatekeeper 100a requests a telephone call 700. ) Is identified (S501), and the identification information is transmitted to the gateway 200b. At this time, the public telephone terminal 700 is connected to the Internet network 11 is a public telephone dedicated to the Internet that is directly connected to the Internet telephone operation server 200 of the present invention when the client receives the handset.

The gateway 200b receiving the identification information of the public telephone terminal 700 from the gatekeeper 200a requests the input of the personal password to the corresponding public telephone terminal 700 (S502).

When the personal password is input from the public telephone terminal 700 in response to the request for inputting the personal password of the gateway 200b, the gatekeeper 200a checks the personal password input from the public telephone terminal 700 at the authentication server ( 200c), and the authentication server 200c performs client authentication against the personal password registered in the database 200e (S503).

When the client authentication is completed, the gatekeeper 200a controls the gateway 200b so that client authentication is completed. Thus, a message for inputting a destination country code, an area code, and a phone number to which a call is to be made is received from the public telephone terminal ( 700, or because the client authentication failed (S504), a message to re-enter the personal password is transmitted to the public telephone terminal 700 (S505). At this time, when the client authentication fails to request re-entry of the personal password, it is preferable to repeat for a predetermined number of times.

Subsequently, when the country code, the area code, and the phone number of the called party are sequentially input from the public telephone terminal 700 (S506), the gatekeeper 200a transmits it to the billing server 200d. Accordingly, the billing server 200d checks the prepaid card balance information of the client to determine whether the client can make a call with the desired country at the current amount (S507), and determines whether or not the call is possible by the gatekeeper 200a. Notify by.

Accordingly, when the balance remaining on the prepaid card of the client is sufficient to make a call, the gatekeeper 200a finds the telephone number of the counterpart to which the client wants to talk, and the public telephone terminal 700 and the general subscriber terminal of the counterpart. Connect the call (800) between (800) (S508). For reference, as a result of determining whether the call is possible, when a small amount is charged for the client to make a call with the desired country, the gatekeeper 200a controls the gateway 200b to make a call at the current amount. The message that it is impossible to be transmitted to the public telephone terminal 700 (S509).

Subsequently, a call path is connected between the public telephone terminal 700 and the general subscriber terminal 800 of the called party through call control of the gatekeeper 200a (S510). The gatekeeper 200a checks whether the call is terminated between the public telephone terminal 700 and the called party's general subscriber terminal 800 (S511), and if the call is ended, the call is sent to the billing server 200 d. Notify that it is finished.

Accordingly, the billing server 200d sets a fee corresponding to the call amount and then performs billing by changing the amount information of the client prepaid card (S512).

The above description is a case where a client with a prepaid card makes a call using a public telephone terminal installed in a telephone room. Hereinafter, a case where a client without a prepaid card makes a call using a public telephone terminal will be described.

That is, as shown in Figure 6, if there is no prepaid card to identify the public telephone terminal 700 largely corresponding to the call request of the public telephone terminal (S801) and to the public telephone terminal 700 Requesting input of a called country code, area code, and telephone number (S802), and connecting a call between the public telephone terminal 700 and the called general subscriber terminal 800 (S803); Detecting whether the call is ended (S804), and when the call is ended, calculating the fee according to the call amount (S805), and transmitting the billing information to the manager terminal 703 (S806). .

This will be described in more detail as follows.

Among the plurality of public telephone terminals 700 installed in the telephone room, the gatekeeper 200a identifies the public telephone terminal 700 (in this case, the Internet phone) that requested the call in response to a call request from a specific public telephone terminal 700. Afterwards, the identification information is transmitted to the gateway 200b. Thus, the gateway 200b requests the terrestrial country code, the area code, and the telephone number to be input to the public telephone terminal 700 so that the destination country code, the area code, and the subscriber's phone number are received from the public phone terminal 700. When input, a call is connected between the public telephone terminal 700 and the called party general subscriber terminal 800 under the control of the gatekeeper 200a, and a call is made. In this case, the gatekeeper 200a When the off-hook signal of the public telephone terminal 700 is detected, the call is determined to be terminated and the billing server 200d notifies that the call is terminated.

Accordingly, the billing server 200d calculates a fee corresponding to the call amount according to a call rate system for each country, and then transmits billing information to the manager terminal 703. In this case, the client may pay in cash the amount displayed on the manager terminal 703.

On the other hand, Figure 7 is a configuration diagram of a telephone call system according to a third embodiment of the present invention, the overall configuration is not significantly different from the second embodiment described above. However, the second embodiment is a form in which a plurality of public telephone terminals are installed in a telephone room, and the third embodiment of the present invention is that the plurality of public telephone terminals are installed at different locations in position, similar to a general public telephone.

Therefore, since the telephone call method according to the third embodiment is the same as the above-described second embodiment, a description thereof will be omitted below.

As described above, since the telephone call system and the telephone call method using the prepaid card of the present invention use the Internet phone separately from the computer, users who do not know the computer can easily use the Internet phone, in particular, using the Internet phone. In the case of international calls, call charges are effective.

In addition, using only a prepaid card with a personal password required for client authentication, Internet telephones (including Internet public telephones) connected to the Internet network, as well as general telephones or mobile communication terminals connected to the public telephone network, are restricted in use. Free calls are possible, and if you install an internet payphone in a telephone room, even people without a prepaid card can make domestic and international calls with low call charges.

Claims (5)

By using a personal password generated when issuing a prepaid card to a client when requesting a call from a client terminal including an Internet telephone, an internet public telephone, an ordinary subscriber general telephone and a mobile communication terminal connected to the Internet network and a public telephone network An authentication server for authenticating the client; A gatekeeper for connecting a call between the client terminal and the counterpart terminal when the client terminal and the counterpart terminal to which the client desires to talk are connected to the Internet network; A gateway for connecting a call between the client terminal and the counterpart terminal when the client terminal and the counterpart terminal to which the client desires to talk are connected to each other in a heterogeneous network; A billing server configured to set a fee corresponding to the amount of calls between the client terminal and the counterpart terminal and to change the amount information of the prepaid card issued to the client in accordance with the settled fee; And a database in which the card number of the prepaid card issued to the client, the personal password required for client authentication, and the amount information are registered. The method of claim 1, wherein the prepaid card is A personal password for charging a certain amount of money and authenticating the client to make a phone call using an Internet telephone and Internet public telephone connected to the Internet network and a general telephone and mobile communication terminal connected to the public telephone network. Phone communication system using a prepaid card, characterized in that recorded. The terminal of claim 1, wherein the Internet payphone is installed in a telephone room, and the telephone room manager terminal is configured to receive and display billing information corresponding to the call volume for each Internet payphone from the billing server through the Internet network. Phone call system using a prepaid card, characterized in that the. Clients prepaid cards with personal passwords required for client authentication for telephone calls using a client terminal including a subscriber's Internet telephone and Internet public telephone connected to the Internet network, and a general telephone and public telephone connected to the public telephone network. Activating the issued prepaid card after issuing to the card; Authenticating a client using the personal password according to the client's call request; Requesting the client terminal to input a phone number of a counterpart terminal; Checking balance information of a prepaid card issued to the client to determine whether a currency amount is filled; Connecting a call between the client terminal and the counterpart terminal; And checking the end of the call of the client to settle the charge and deducting the settled amount from the balance of the prepaid card issued to the client to perform the billing. Way. Confirming identification information of a corresponding client terminal in response to a telephone call request through a plurality of client terminals installed in a telephone room connected to the Internet network and a public telephone network; Requesting the client terminal to input a phone number of a counterpart terminal; Connecting a call between the client terminal and the counterpart terminal; Checking the end of the call of the client to settle the charge and transmitting the settled fare information to an administrator terminal installed in the telephone room.