KR100536911B1 - System and method for servicing internet phone - Google Patents

Abstract

After the script defined by the user is stored in the server, the supplementary service providing system of the Internet telephone that can provide various script-based supplementary services to the users who use the Internet telephone is connected to the Internet telephone service system and added according to the call connection. After setting up the script for the service, the client terminal group to send and the script sent by the client terminal group are stored in the database. It includes a server and a CPL server that provides an additional service corresponding to the script fetched from the registration server when the call connection from the client terminal.

Description

System and method for providing Internet telephony service {SYSTEM AND METHOD FOR SERVICING INTERNET PHONE}

The present invention relates to an internet telephony service, and more particularly, to an internet telephony service providing system and method capable of providing various additional services.

With the development of internet solutions, the number of users accessing the web has exploded, and various solutions for making phone calls from the web have been proposed. Currently, solutions for making phone calls on the Internet are exploding in popularity, and the technology for phone calls is disclosed in Korean Patent Publication No. 10-1999-073134, and the technology for Internet phones is described in US Patent No. 5,862,339. have.

The current Internet telephony service is mainly provided for voice calls. As the Internet telephony is activated, users require more various supplementary services, but there is no system for supporting such supplementary services.

Recently, the IETF RFC2824 standard has developed a call processing language, which is a kind of script to support the additional functions of Internet telephony services. These call processing language scripts support users to operate additional servers by describing additional services. Through this, calls passing through the network provide various additional services according to the script defined by the user.

However, until now, Internet phone service companies have not provided additional services. Therefore, there is an urgent need to develop a solution for supporting Internet telephony additional services.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the related art. An additional service providing system and method are provided.

In order to achieve the above object, the present invention, in the Internet telephone service system for providing a telephone call service over the Internet, access to the Internet telephone service system to set a script describing the operation method of the additional service according to the call connection And storing the client terminal group to be transmitted and the script transmitted by the client terminal group in a database, and retrieving the scripts set by the client terminal requesting the call connection from the database when a call connection request is made from an arbitrary client terminal. It includes a registration server, and a CPL server for performing the additional service operation by analyzing the script extracted from the registration server.

In addition, the present invention provides a method for providing an additional service according to the call connection using an Internet telephone service system providing a call connection service between the client, the client terminal using the script input window operating method of the additional service Generating a script describing a script, receiving a script generated by the client terminal by a CPL server, registering the script in a database, and requesting a call connection from any sender to a receiver. Retrieving a script set by the transceiver from the database using the transceiver information to be connected to the call; and providing a supplementary service corresponding to the retrieved script by the CPL server when a call is connected between the transceiver; do.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a system for providing an additional service using an internet telephone according to the present invention, and FIG. 2 is a block diagram illustrating an internal function of a client terminal receiving an internet telephone service according to the present invention.

Referring to FIG. 1, an additional service providing system includes a plurality of client terminal groups (100/1 to 100 / n; 100) and a terminal group 100 connected to an Internet telephone service system through a communication network 150 to use an Internet telephone service. Internet telephone service system 200 that provides various additional services in call connection as well as Internet telephone service. In particular, the Internet telephony service system 200 is composed of a Call Processing Language (CPL) server 210 and a registration server 220 to provide various additional services according to the present invention.

The terminal group 100 has a built-in Internet telephony application for registering an Internet telephony service and an additional service, and the Internet telephony application provides an additional service in addition to providing a SIP url or a telephone number of a receiver. It provides a setting window where you can enter or set a script. Using the input window and the setting window, a call with an arbitrary Internet phone service client is attempted or a script for additional service is set.

The CPL server 210 transmits a script defined by the terminal group 100 to the registration server 220, and transmits a script defined by a transceiver to be connected to a call when an arbitrary terminal 100/1 requests a call connection. 220). In addition, the CPL server 210 executes an additional service corresponding to the script when connecting a call between the transmitter and the receiver after interpreting the script defined by the transceiver.

The registration server 220 stores the script transmitted from the terminal group 100 in the database 230, and withdraws the script stored in the database 230 according to the script request of the CPL server 210 to the CPL server 210. to provide.

Functions of the installed Internet telephony service program for the terminal group 100 to receive the Internet telephony service include, as shown in FIG. 2, a call setup interface 101, an address registration manager 102, a codec processor 103, Script setting interface 104, XML function unit 105, script registration management unit 106, user agent 107, authentication function 108, SDP stack 108, SIP stack 110 and transceiver 111 It includes.

The call setup interface 101 provides an input window through which any client can enter a Session Initiation Protocol (SIP) uniform resource locator (SIP) or a telephone number needed to use an Internet telephony service. Provide a user interface for registering location information.

When the client wants to register its current location information, the address registration manager 102 requests a registration to the Internet telephone service system 200 using its information (for example, an IP set in the terminal), or the Internet telephone service. It provides the client with the ability to retrieve or delete location information stored in the database 230 of the system 200.

The codec processing unit 103 converts a voice signal into a data packet and transmits the voice signal to the counterpart when the client starts a voice call after setting up a call through the Internet telephone.

The script setting interface 104 provides a setting window for the client to input or set a script for setting an additional service that the client wants to be provided with when the call is connected with the other party.

The XML function unit 105 checks whether the script written by the client through the script setting interface 104 conforms to a predetermined grammar.

The script registration management unit 106 requests a client to register a script set through the script setting interface 104 to the database 230 of the Internet telephone service system 200, and retrieves and deletes a script stored in the database 230. To the client.

The user agent 107 generates or manages basic information (eg, a header value) necessary for constructing a message such as registering client current location information, registering a script for an additional service, or setting up a voice call.

The authentication function 108 transmits the information according to the authentication request from the Internet telephone service system 200 when the client connects to the Internet telephone service system 200 to request a call connection or registers a script for an additional service. To the telephone service system 200.

The SDP stack 109 includes the codec information in the body portion of the SIP invite message when transmitting the SIP invite message for call establishment with the other party.

The SIP stack 110 generates a SIP message for call setup or additional service based on the message header value provided by the user agent 107, or separates the SIP message received through the transceiver 111 into a header part and a body part. Let's do it.

The transceiver 111 transmits a SIP message generated in the SIP stack 110 to the communication network 150 using TCP / UDP, or receives a SIP message from the Internet telephone service system 200 and transmits the SIP message to the SIP stack 110. To pass.

A process of establishing a call or registering a script by accessing the Internet telephony service system 200 for a user group having the above configuration will be described with reference to FIG. 4. 4 is a flowchart illustrating a process of generating a call or registering a script using a terminal of a user group according to the present invention.

If any client runs an Internet phone application built into the terminal (eg, 100/1) to use the Internet phone service, the Internet phone application registers a script for call setup and additional services to the terminal. It provides a selection window to select any one of (S400, S402).

When the client selects call setup from the menu in step S402, the call setup interface 101 in the terminal 100/1 of the user 100/1 provides an interface such as an input window for inputting a recipient address. 1) is displayed (S404).

The Internet telephone service system 200 connects the receiver and the client based on the address of the receiver inputted by the user 100/1 in the input window, and thus the client initiates an internet telephone call with the receiver (S406). Thereafter, the Internet telephone service system 200 disconnects the call between the receiver and the client according to the call disconnection request of the terminal 100/1 to disconnect the telephone call (S408).

When the user selects a script registration menu from the menu in step S402, the script setting interface 104 provides a script setting window for setting a script for an additional service to the terminal 100/1 of the client (S410).

The XML function unit 105 checks the validity of the value input to the script setting window using the parser (S412), and the user agent 107 generates a header value of the message required for the script registration request (S414).

The SIP stack 109 generates a SIP message for script registration using the header value of the message transmitted from the user agent 107 (S416).

When the script registration management unit 106 transmits the SIP message generated in the SIP stack 109 to the Internet telephone application service system 200 through the transceiver 111, the CPL server 210 of the Internet telephone application service system 200. ) Checks the validity of the script loaded in the SIP message to determine whether registration is possible (S418 and S420).

As a result of the determination in step S418, if the script loaded in the SIP message is invalid, the CPL server 210 transmits a message to the terminal of the user 100/1 after registering that it cannot register, and returns to step S402 to proceed to the next step. (S422).

As a result of the determination in step S418, when the script loaded in the SIP message is valid, the CPL server 210 registers the script for the additional service in the database 230 through the registration server 220 (S424).

Hereinafter, referring to FIG. 3, a functional configuration of a CPL server for providing an additional service to clients through an Internet phone will be described. 3 is a block diagram showing an internal function of a CPL server for providing an additional service in the Internet telephony service system according to the present invention.

Functional configuration of the CPL server 210 to provide additional services to the Internet phone to the client, as shown in Figure 3, the CPL function unit 211, proxy function unit 212, XML function unit 213 , A script loading unit 214, a user agent 215, a SIP stack 216, and a transceiver 217.

The transceiver 217 receives a call connection request message such as an additional service request, a registration, or an Internet telephone service request transmitted from the client terminal group 100 through the communication network 150.

The received call is parsed through the SIP stack 216 and provided to the user agent 213, which provides the parsed information to the proxy function 212.

The proxy function 212 requests the CPL function 211 whether a script corresponding to the call received through the communication network 150 is defined, and the CPL function 211 is included in the call connection request message. The registered server 220 requests the script set by the transceiver using the received transceiver information. The registration server 220 withdraws the script from the database 230 according to the script request and transmits it to the transceiver 217. The script received from the registration server 220 is delivered to the XML function 213 through the SIP stack 216 and the user agent 215.

When the XML function unit 213 performs a script validation using the parser and then provides the CPL function unit 211, the CPL function unit 211 interprets the validated script and performs an action accordingly. After the decision is made, the proxy function 212 is instructed.

The proxy function 212 transmits a response message according to the call connection request to the client terminal. At this time, the response message is a message related to the additional service corresponding to the script set by the client. For example, the response message is a message for executing various additional services such as call disconnection and call transfer.

The process of call processing using the script stored in the database by the Internet telephone service system will be described with reference to FIG. 5 is a flowchart illustrating a call processing process using a script in the Internet telephone service system according to the present invention.

Prior to the description, any client writes a script for receiving an additional service during an internet phone call using his terminal (eg, 100/1), which script is a database of the Internet phone service system 200. A process of processing a call by the Internet telephone service system on the assumption that the data is stored at 230 is described.

Referring to FIG. 5, after the CPL server 210 receives a message for call connection from the user 100/1 through the transceiver 217, the received message is parsed by the SIP stack 216 to be a user agent. It is transmitted to 215 (S500, S502).

The user agent 215 extracts the message header and the body value from the message, and the proxy function unit 212 performs the validity check on the message value (S504 and S506).

The CPL function unit 211 requests the registration server 220 for a script search corresponding to the received message, and the registration server 220 searches the database 230 according to the request of the CPL function unit 211 to the message. It is determined whether corresponding script information exists (S508, S510).

As a result of the determination in step S510, when the script information exists, the CPL function unit 211 loads the script received from the registration server 220, the XML function unit 213 parses the loaded script (S512, S514).

When the CPL function unit 211 determines the additional service according to the call connection after interpreting the loaded script, the proxy function unit 212 instructs the operation of the call and a message for supporting the additional service according to the call connection. To generate (S516, S518, S520).

As a result of the determination in step S510, if there is no script information, the flow proceeds to step S518, where the CPL function unit 211 instructs the proxy function unit 212 to call the call connection operation corresponding to the call connection request message, and the proxy function. The unit 212 connects a call between clients according to an operation instruction of the CPL function unit 211.

Although the present invention has been described in detail based on the embodiments, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention.

As described above, the present invention provides various additional services to clients at the time of call connection by providing the additional services registered at the time of call connection after registering the additional services defined by the clients in the server under the Internet telephony service environment. Can be.

1 is a block diagram showing a system for providing an additional service using an Internet telephone according to the present invention;

2 is an internal functional configuration diagram of a client terminal provided with an Internet telephony service according to the present invention;

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Figure 3 is a block diagram showing the internal function of the CPL server for providing an additional service in the Internet telephone service system according to the present invention, Figure 4 is a call generation or script using a terminal of the user group according to the present invention Is a flowchart illustrating the registration process,

5 is a flowchart illustrating a call processing process using a script in the Internet telephone service system according to the present invention.

<Description of the code | symbol about the principal part of drawing>

100: client terminal group 150: communication network

200: Internet Phone Service System 210: CPL Server

220: registration server 230: database

Claims (9)

In the Internet telephone service system for providing a telephone call service over the Internet, A client terminal group which accesses the Internet telephone service system and sets and transmits a script describing a method of operating an additional service according to a call connection; A registration server for storing a script transmitted from the client terminal group in a database, and retrieving a script set by the client terminals requesting the call connection from the database when a call connection request of an arbitrary client terminal is performed; Internet telephony service providing system comprising a CPL server for performing the additional service operation by interpreting the script extracted from the registration server. The method of claim 1, The client terminal, A call setup interface providing an input window for inputting a SIP url or phone number of the other party for the call connection and an input window for inputting location information of the client; A script setting interface for providing a setting window for inputting or setting a script for setting the additional service; An XML function unit for determining whether or not the script defined by the setting window conforms to a grammar; A user agent generating a header value of a message for registering a call connection or a script inputted to the call setup interface or script setup interface; A SIP stack for generating a message for the call connection or script registration using the header value generated by the user agent; Internet telephone service providing system including a transceiver for transmitting the message for the call connection request or script registration to the Internet telephone service system The method of claim 2, The client terminal, The Internet telephone service providing system further comprises an address registration management unit for requesting registration of the location information to the Internet telephone service system and providing a function of retrieving or deleting location information stored in the database. The method of claim 3, wherein The location information registration request, Requesting the internet telephony service system using the IP assigned to the client terminal. The method of claim 1, The CPL server, A transceiver for receiving a call connection request message from an arbitrary client terminal; A CPL function unit for requesting the registration server for a script registered by the transceiver using the transceiver information included in the call connection request message; In response to a request of the CPL function unit, an Internet telephone service providing system including a proxy function unit receiving a script registered by the transceiver, received from the registration server, and generating a response message according to the call connection request based on the received script. The method of claim 5, The CPL server, An XML function unit for checking whether a script provided from the registration server is suitable for a predetermined grammar; The Internet telephony service providing system further comprises a user agent extracting a header and a body value from the call connection request message. In the method of providing an additional service according to the call connection using an Internet telephone service system that provides a call connection service between clients, Generating, by the client terminal, a script describing a method of operating an additional service using a script input window; Receiving, by the CPL server, the script generated by the client terminal; Registering the script with a database; Retrieving from the database a script set by the sender and receiver using the sender / receiver information to be connected when there is a call connection request from any sender to the receiver; And providing, by the CPL server, an additional service corresponding to the searched script when a call is connected between the transceivers. The method of claim 7, wherein Generating the script, Determining whether the script inputted to the input window is set according to a preset grammar; In response to the determination, when the script is set according to a predetermined grammar, generating a SIP message for registering a script by using the information of the client, The receiving of the script may include receiving an SIP message generated by the client terminal. The method of claim 7, wherein Registering the script to the database, Determining whether the script received from the client terminal is written in a predetermined grammar; And sending a registration error message to the client terminal when the script is not written according to a predetermined grammar.