KR100545081B1 - Remote Private Branch Exchange System for IP Phone and Method for Group Call Service using it - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a remote branch office exchange system for an Internet phone service and a group customer call service method using the same.

2. The technical problem to be solved by the invention

The present invention provides a group customer service in the premises by using an internet phone terminal, and logically separates the call agent and the centrix to perform the group customer service without additional functions on the subscriber terminal. A remote premises exchange system and a group customer call service method using the same and a computer readable recording medium recording a program for realizing the method.

3. Summary of Solution to Invention

The present invention provides call authentication means for authenticating and authorizing a call transmitted from an Internet phone user terminal; Call setup means for performing call setup according to an internet protocol on the call recognized by the call authentication means; Call connection means for determining whether the call recognized by the call setting means is a group customer target call or an external call and connecting the group customer target call to an external call; Group customer call setting means for receiving a group customer target call transmitted from the call connection means and setting up a call; Group customer judging means for judging to which group customer the call set in said group customer call setting means is sent; And call processing means for setting up a call using the Internet protocol to the group customer determined by the group customer determining means.

4. Important uses of the invention

The present invention is used in the Internet phone service system.

Internet Phones, Local Exchange, Group Customers, Call Agents, Centrix, H.323

Description

Remote Private Branch Exchange System for Internet Phone Service and Method for Group Call Service Using It

1 is a configuration diagram of an embodiment of a remote premises exchange system for an Internet phone service according to the present invention;

2 is a flow chart of an embodiment of a call service method between the same group customers according to the present invention;

3 is a flow chart of an embodiment of a call service method between other group customers according to the present invention;

4 is a flow chart of an embodiment of a call service method between a group customer and an external terminal according to the present invention;

5 is a flowchart illustrating an embodiment of a method for recording a busy or missed message according to the present invention;

6 is a flow chart of an embodiment of a message retrieval method according to the present invention;

7 is a flowchart illustrating an embodiment of a group customer call service method according to the present invention.

* Explanation of symbols for the main parts of the drawings

110: group customer 1 120: call agent

121: authentication 122: call control / routing

123: H.323 protocol stack 130: IP-Centrix

131: centralized call processing module 132: group customer database

133: H.323 protocol stack 140: group customer N

The present invention provides a remote premises exchange system for an Internet phone service providing a group customer service using an H.323 Internet phone terminal and a centralized call processing method that does not have a separate additional function on the Internet, and a group customer call service method using the same. The present invention relates to a computer-readable recording medium having recorded thereon a program for realizing this.

In general, Internet phones have a lot of interest because they can make voice calls for free.

In recent years, the local area network (LAN) is an important communication means beyond the telephone network.

However, since the local area network and the extension telephone network are each composed of independent networks, it takes twice the cost.

Therefore, a system that provides an appropriate call connection according to the service and user information provided from various computer systems based on the current computer server, interworking the VoIP call and the PSTN call using VoIP technology, the hook state of the terminal and Many services are being developed for Internet phones, such as a system that connects a call by recognizing a transmitted signal, and a system that provides services in various scenarios depending on the state of the terminal.

However, since a method of using an existing Internet phone service must be used for a call between terminals in the premises using an Internet phone, it cannot be easily interworked with other application services and additionally added to the subscriber terminal for group customer service in the premises. There was a problem with having a function.

The present invention has been proposed in order to solve the above problems, and provides a group customer service in the premises using an Internet phone terminal. A remote premises exchange system for an Internet phone service capable of performing a group customer service, a group customer call service method using the same, and a computer readable recording medium recording a program for realizing the method are provided.
Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object comprises: a remote premises exchange system for an internet phone service, comprising: call authentication means for authenticating and authorizing a call sent from an internet phone user terminal; Call setup means for performing call setup according to an internet protocol on the call recognized by the call authentication means; Call connection means for determining whether the call recognized by the call setting means is a group customer target call or an external call and connecting the group customer target call to an external call; Group customer call setting means for receiving a group customer target call transmitted from the call connection means and setting up a call; Group customer judging means for judging to which group customer the call set in said group customer call setting means is sent; And call processing means for setting up a call using the Internet protocol to the group customer determined by the group customer determining means.

On the other hand, the method of the present invention, a group customer call service method using a remote premises exchange system, comprising: a first step of receiving a call connection request from a calling customer terminal to determine whether or not a group customer; As a result of the determination of the first step, if the group customer is not a group customer, requesting call setup directly to the caller terminal to set up a call; and if the group customer, the second step of determining whether the group is a group customer; A third step of receiving an extension telephone number if the same group customer is determined as the second step and requesting call setup with Centrix; A fourth step of receiving an access code and a called number from the same group customer as a result of the determination of the second step and requesting call setup with Centrix; A fifth step of establishing a call according to the call establishment request and opening a call channel between the calling customer terminal and the called customer terminal; And after the call is ended, closing the call channel and initiating a call.

The method may further include a seventh step of storing the voice message in the voice mail service system according to the guidance message of the voice mail service system when the called customer terminal is busy or absent.

On the other hand, the present invention, in the remote branch exchange system having a processor, the group customer call service method using the remote branch exchange system, comprising: a first function of receiving a call connection request from a calling customer terminal to determine whether or not a group customer; As a result of the determination of the first function, if the group customer is not a group customer, the caller requests a call setup directly to establish a call, and if the group customer is a second function of determining whether the group is a group customer again; A third function of receiving an extension telephone number and requesting call setup from Centrix if the same group customer is determined as the second function; A fourth function of receiving an access code and a called number from the same group customer and requesting call setup from Centrix as a result of the determination of the second function; A fifth function of establishing a call according to the call establishment request and opening a call channel between the calling customer terminal and the called customer terminal; And a computer readable recording medium having recorded thereon a program for realizing a sixth function of closing the call channel and initiating a call after the call is terminated.

In addition, the present invention can be read by a computer recording a program for further realizing a seventh function of storing a voice message in a voice mail service system according to the guidance message of the voice mail service system when the called customer terminal is busy or absent. Provide a recording medium.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an embodiment of a remote premises exchange system for an Internet phone service according to the present invention.

As shown in FIG. 1, the remote branch office switching system is configured to authenticate, control, route, and call processing Internet phone terminal units 110 and 140 for making a call over the Internet, and a call transmitted from the Internet phone terminal unit. Call agent 120 to perform, and IP-CENTREX for receiving a call-up request for the group customer sent from the call agent 120 to set up the call to the group customer.

The Internet phone terminal unit (110, 140) to form a group customer by grouping the group meeting the requirements according to the predetermined requirements arbitrarily determined.

The call agent 120 is largely comprised of an authentication 121, a call control / routing 122, and an H.323 protocol stack 123 that performs call processing.

The authentication 121 performs authentication and authorization of the person who requested the call. The call control 122 performs a call setup through the call agent 120 using the H.323 protocol stack 123.

In addition, the call control / routing 122 analyzes information about the call and determines whether the call is for a group customer. And, as a result of call information analysis, if a group customer is called, IP-CENTREX performs a call setup request to the called party, and if the call is not a group customer, it performs a call setup to the called party. Do this.

On the other hand, the IP-CENTREX (130) is a centralized call processing module 131 that serves as a call setup for the group customer and the group customer to configure the group customer database 132 and the call-up It consists of an H.323 protocol stack 133 to perform.

When a call request comes in to the IP-CENTREX 130, the centralized call processing module 131 first checks the group customer by referring to the group customer database 132 and then the H.323 protocol stack 133. Perform setup by using).

In addition, the centralized call processing module 131 connects to an application server such as a voice mail service (VMS), which is a voice / fax server based on an internet protocol, to record and listen to voice when the called party is absent or busy. Do this.

On the other hand, the Point of Presence for IP Phone (POP) in a group customer service system includes an Internet phone terminal connected to a group customer group or an Internet phone or a personal computer (PC) terminal connected to a general enterprise and a home. Can be.

2 is a flowchart illustrating an embodiment of a call service method between the same group customers according to the present invention, and is a method of a centralized call processing service between Internet phone terminals in the same group.

As shown in FIG. 2, the centralized call processing service method between terminals in the same group customer (group) attempts an extension call within the same IP-Centrix.

First, when the calling client terminal 201 requests a call connection (211), the call agent (CALL AGENT) 202 requests the IP-centrix 203 to confirm whether it is a group customer (212), and responds to it. After receiving (213) and confirming that the group customer is allowed to access, the signal is sent to the calling customer terminal 201 (214), and the call agent 202 receives the extension number from the calling customer terminal 201 (215). In step 216, a call is sent to the calling customer terminal 201.

The call agent 202 analyzes the call information and confirms that the group customer is a subscriber, and then requests the call setup to the IP-centrix 203 (217).

The IP-centrix 203 receiving the call setup request analyzes the extension number information of the call setup, finds the corresponding group to which the called party terminal 204 belongs, and calls the message to the called party terminal 204. Send it.

The called party terminal 204 receiving the call setup message transmits a ring signal to the called party and transmits an altering message to the IP-centrix 203 (S219).

IP-centrix 203 transmits the altering message to call agent 202 (220), which is in turn sent to calling client terminal 201 (221).

The originating customer terminal 201 receiving the altering message transmits a ring back tone to the calling customer.

When the called party terminal 204 hooks off and sends a connection signal to the IP-centrix 203 (222), the called party terminal 204 sends the connection signal to the call agent 202, and then the calling party terminal 201. To send. Then, a real-time transmission protocol (RTP) channel is established between the two terminals 201 and 204, and the extension channel is opened (225) to make a call between the two customers (226).

When the call ends, close the real-time transmission protocol (RTP) channel (227), and initializes the call state.

3 is a flowchart illustrating an exemplary call service method between other group customers according to the present invention.

As shown in FIG. 3, another group customer call service method is a case of attempting a call to a subscriber belonging to another IP-Centrix group.

Therefore, the calling customer 301 first transmits a call setup message to the call agent 302 by inputting an access code and a called number. In addition, the call agent 302 sends a signal informing that the call is in process (312).

The call agent 302 analyzes the call information and confirms that it is a group customer subscriber. Then, the call agent 302 transmits the called number to the IP-centrix 303 to request call setup (313).

IP-centrix 303 analyzes the called party number information of the call-up, finds the corresponding group, and transmits a call setup message to the called terminal (314).

The called party terminal 304 transmits a ring to the called party and transmits an altering message to the IP-centrix 303 (315).

The IP-Centrix 303 sends an Altering message to the call agent 302, which in turn is sent to the calling customer terminal 301.

The originating customer terminal 301 receiving the altering message transmits a ring back tone to the calling customer.

When the called party terminal 304 hooks off and sends a connection signal to the IP-centrix 303 (318), the called party terminal 304 sends the connection signal to the call agent 302 (319) and again sends the calling customer terminal ( 301, 320. Then, a real-time transmission protocol (RTP) channel is established between the two terminals 301 and 304, and an extension channel is opened (321) to make a call between subscribers (322).

When the call ends, close the real-time transmission protocol (RTP) channel (323), and initializes the call state.

4 is a flowchart illustrating a call service method between a group customer and an external terminal according to the present invention.

As shown in FIG. 4, the call service method between the group customer and the external terminal is a case where a call is attempted to a subscriber belonging to the IP-centrix group. That is, the calling customer terminal 401 corresponds to a group customer, and the called customer terminal 403 becomes an external internet phone.

First, the caller terminal 410 transmits a call setup message to the call agent 402 by inputting an access code and an incoming number (411). The call agent 402 transmits a signal during a call procedure to the called party terminal 401 (412).

The call agent 402 analyzes the call information and transmits a call setup message to the called party terminal 403 (413).

The called party terminal 403 transmits a ring to the called party and transmits an altering message to the call agent 402 (414).

The call agent 402 transmits an altering message to the calling customer terminal 401 again.

The originating customer terminal 401 receiving the altering message transmits a ring back tone to the calling customer.

The called party terminal 403 hooks off and sends a connection signal to the call agent 302 (416), and sends it back to the calling party terminal 401 (417). Then, a real-time transmission protocol (RTP) channel is established between the two terminals 401 and 403, and an extension channel is opened (418) to make a call between subscribers (419).

When the call ends, close the real-time transmission protocol (RTP) channel (420), and initializes the call state.

5 is a flowchart illustrating a method for recording a busy or missed message according to the present invention.

As shown in FIG. 5, a method of recording a busy or missed message is a case where a call is attempted to a subscriber belonging to another IP-Centrix group.

The calling client terminal 501 transmits a call setup message to the call agent 502 by inputting an access code and a called number (511). The call agent 502 transmits a signal during the call procedure to the calling customer terminal 501 (512).

The call agent 502 analyzes the call information and confirms the group customer subscriber, and then requests the call setup based on the called number to the IP-centrix 503 (513).

The IP-centrix 503 analyzes the number information of the call setup, finds the corresponding group, and transmits the call setup message to the called party's terminal 504 (514).

If the incoming call terminal 504 is busy or unanswered, it sends a busy or missed signal to the IP-centrix 503 (515), and again, the IP-centrix 503 is a Voice Mail Service: The call setup message (step 516).

When the VMS 505 responds, a connection signal 517 to 519 is transmitted between the calling client terminal 501 and the VMS 505 via the IP-centrix 503 and the call agent 502, thereby real-time transmission protocol (RTP) channel. The extension channel is opened (520), and the voice announcement is sent from the VMS 505 to the calling customer terminal 501, and the calling customer sends the message to the VMS 505 according to the announcement. The message is stored according to an interactive voice response (IVR) scenario (522).

When the call ends, close the real-time transport protocol channel and reset the call state.

6 is a flowchart illustrating a message searching method according to the present invention.

The message search refers to a process of searching for and listening to a message stored in the VMS during a call or a miss described in FIG.

As shown in FIG. 6, in the message retrieval method, the originating client terminal 601 first transmits a call setup message to the call agent 602 by inputting an access code and a VMS representative number.

The call agent 602 analyzes the phone information and sends a call setup message to the VMS 603 (613).

The VMS 603 sends an alerting message to the calling client terminal 601 via the call agent 602 (614, 615), and sends a connection message (616, 617) to the calling client terminal 601 and the VMS 603. After the real-time transmission protocol (RTP) channel is established (618), the voice announcement is sent to the calling customer terminal (601).

The subscriber of the calling customer terminal 601 may retrieve the message according to the Interactive Voice Response (IVR) scenario (620).

When the call ends, close the real-time transmission protocol (RTP) channel (621), and initializes the call state.

7 is a flowchart illustrating an embodiment of a group customer call service method according to the present invention.

As shown in FIG. 7, the group customer call service method first receives a call connection request from an originating customer terminal (701) and determines whether or not it is a group customer (702).

As a result of the determination, if it is not a group customer, a call setup request is immediately made to the called party terminal (704), and a call is set (708).

As a result of the determination, if the same group customer receives the extension telephone number (705), the call is requested to be set by Centrix (707).

As a result of the determination, if it is not the same group customer, the process proceeds to a process of receiving an access code and a called number and requesting call setup to Centrix (707).

After requesting the call setup with Centrix, the call is established (708), the call is made between the calling party and the called party (709), and after the call is terminated, the channel is closed (710), and the call is initialized.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention provides a group customer service by using an Internet phone terminal, and logically separates the call agent and the centrix so that it can be easily linked to the expandability and other application services when interworking with the subscriber extension and other application services. It has an effect.                     

In addition, the present invention has the effect that it can provide a service without a separate additional function to the subscriber terminal for a group customer service.

Claims (9)

In the remote branch exchange system for the Internet phone service, Call authenticating means for authenticating and authorizing a call sent from an Internet phone user terminal; Call setup means for performing call setup according to an internet protocol on the call recognized by the call authentication means; Call connection means for determining whether the call recognized by the call setting means is a group customer target call or an external call and connecting the group customer target call to an external call; Group customer call setting means for receiving a group customer target call transmitted from the call connection means and setting up a call; Group customer judging means for judging to which group customer the call set in said group customer call setting means is sent; And Call processing means for setting up a call using the Internet protocol to the group customer determined by the group customer determination means Remote premises exchange system comprising a. The method of claim 1, The call connection means, When the external call, the remote premises switching system, characterized in that to perform the call setup to the destination terminal. The method of claim 1, The internet protocol, In fact, the remote branch office switching system, characterized in that the H.323 protocol. The method of claim 1, The group customer call setting means, Remote premises exchange, which connects to an application server such as Voice Mail Serve (VMS), a voice / fax server based on the Internet protocol, and performs voice recording and listening functions when the called party is absent or busy. system. In the group customer call service method using a remote branch exchange system, A first step of receiving a call connection request from an originating customer terminal to determine whether the group is a customer; As a result of the determination of the first step, if the group customer is not a group customer, a call setting request is directly made to the called party's terminal to set the call; A third step of receiving an extension telephone number if the same group customer is determined as the second step and requesting call setup with Centrix; A fourth step of receiving an access code and a called number from the same group customer as a result of the determination of the second step and requesting call setup with Centrix; A fifth step of establishing a call according to the call establishment request and opening a call channel between the calling customer terminal and the called customer terminal; And A sixth step of closing the call channel and initiating a call after the call ends; Group customer call service method comprising a. The method of claim 5, A seventh step of storing the voice message in the voice mail service system according to the guidance message of the voice mail service system when the called terminal is busy or absent; Collective customer call service method further comprising. The method according to claim 5 or 6, The voice message stored in the seventh step is Afterwards, the called party terminal accesses the voice mail service system, searches according to a scenario provided by the voice mail service system, and listens. In a remote premises exchange system with a processor, In the group customer call service method using a remote branch exchange system, A first function of receiving a call connection request from an originating customer terminal to determine whether the group is a customer; As a result of the determination of the first function, if the group customer is not a group customer, the caller requests a call setup directly to establish a call, and if the group customer is a second function of determining whether the group is a group customer again; A third function of receiving an extension telephone number and requesting call setup from Centrix if the same group customer is determined as the second function; A fourth function of receiving an access code and a called number from the same group customer and requesting call setup from Centrix as a result of the determination of the second function; A fifth function of establishing a call according to the call establishment request and opening a call channel between the calling customer terminal and the called customer terminal; And A sixth function of closing the call channel and initiating a call after the call ends; A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 8, A seventh function of storing the voice message in the voice mail service system according to the guidance message of the voice mail service system when the called terminal is busy or absent; A computer-readable recording medium having recorded thereon a program for further realization.

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