JP2001320485A - Transfer system to internet phone in busy state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer system to an Internet phone in busy state that automatically transfers an incoming call to an Internet phone of a terminal according to a registered transfer destination IP address when the incoming call is received by the terminal connected to the Internet. SOLUTION: When an incoming call comes from a telephone set 53 to a PC terminal 51 that is busy, a phone connection node 21 acquires a transfer destination IP address via a server 31 and transmits a busy state notice signal to the telephone set 53. The server 31 accesses an Internet connection node 11 and interrupts the incoming call to the PC terminal 51 via an Internet service provider A 72. The Internet phone receiving the incoming call connects the phone connection node 21 to the Internet connection node 11 to complete routing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a busy transfer method to an Internet telephone which is suitable for use in a system for transferring an incoming call to a terminal connected to the Internet.

[0002]

2. Description of the Related Art In recent years, the development of the Internet has been remarkable.
(Providers) for browsing WWW (World Wide Web) contents, exchanging e-mails, and making Internet telephone calls. When the Internet is used in this manner, the connection from a general terminal device, for example, a personal computer to the ISP, is often made by a dial-up connection using a modem and an analog subscriber line. Therefore, while using the Internet, the telephone line is occupied by the connection with the ISP, and during that time, the telephone line is in a busy state and cannot receive a call from another telephone.

[0003] Conventionally, regarding telephones utilizing the Internet, for example, as described in Japanese Patent Application Laid-Open No. H11-146083, when a call is made from a terminal device, the homepage of the other party is automatically sent to the device of the caller. As described in Japanese Patent Application Laid-Open No. H11-122388, there is known a system showing a specific connection method of an Internet telephone system. Also, IN
As a development of the (intelligent network) technology, the SCP (Service Control Point) has a subscriber's telephone number and the subscriber's IP (Internet
Protocol) An address conversion node is provided, and when the subscriber connects to the Internet and is in a busy state, the SCP obtains the IP address of the busy subscriber from the telephone number and interrupts the busy subscriber as an Internet telephone. A method is considered.

[0004]

However, according to the above-mentioned conventional method, the telephone set of the subscriber connected to the Internet is in a busy state and cannot receive a call even if there is an urgent matter or an important call. There was a problem. Also,
A system using IN technology builds a database of IP addresses in the SCP, and is generally used because the system scale is large, such as the need to register and update new subscribers, and the procedure for updating data to the SCP is complicated. There was a problem of lack of sex.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has as its object to provide a method of receiving a call to a busy terminal device connected to the Internet by using an IP address of a transfer destination registered in advance. The present invention is to provide a busy transfer method to an Internet telephone which enables a telephone call by automatically transferring the terminal apparatus to an Internet telephone through an ISP.

[0006]

According to an aspect of the present invention, there is provided a terminal device having connection means for connecting to the Internet, wherein the terminal device includes software for Internet telephone. A telephone connection node for connecting the terminal device to a telephone line network;
A server having digital conversion means for connecting a voice communication line of the telephone line network connected to the telephone connection node to the Internet, and an IP address of the terminal device input from the terminal device via the server; A database for storing telephone numbers; and an internet connection node for connecting the server and an internet service provider, wherein the terminal device is connected to the internet.
When a call is received from a telephone connected to the telephone line network while connecting to the Internet via a service provider, the server reads the IP address of the terminal device from the database, and Transmitting a busy notification signal to the telephone from the Internet, accessing the Internet connection node by the IP address to connect to the Internet service provider, causing the terminal to interrupt-transmit a call from the terminal to the terminal, Incoming calls are received to the Internet telephone stored in the device.

[0007] The invention described in claim 2 is the first invention.
In the busy transfer method to an Internet telephone described in the above, the database stores the input IP address and the telephone number so as to be related to each other, and stores the data so that one data can refer to the other data. It is characterized by doing.

[0008] The invention described in claim 3 is the first invention.
In the busy transfer method to an Internet telephone according to the above, the busy notification signal transmitted from the telephone connection node to the calling telephone is a busy state of the called subscriber terminal, It is characterized by comprising a signal notifying that the program is running and a transfer destination IP address.

The invention described in claim 4 is the first invention.
Wherein the server comprises a control signal transmitting / receiving means for transmitting and receiving a control signal for telephone connection with the telephone connection node.

[0010] The invention described in claim 5 is the first invention.
In the busy transfer method to an Internet telephone according to the above, the Internet telephone stored in the terminal device can perform a voice call when confirming an incoming call received via the Internet service provider. Is generated and transmitted to the server.

[0011] The invention according to claim 6 is the first invention.
Wherein the server sends to the telephone connection node a signal for stopping transmission of the busy notification signal based on a response signal indicating that voice communication is possible, received from the terminal device. It is characterized by doing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. In FIG.
The terminal device is, for example, a PC (personal computer). The PC terminal 51 has software for making a connection to the Internet, a web browser, and an Internet telephone, and is connected to the telephone connection node 21 via a modem 52. Telephone connection node 12, 2
1 is a processing of incoming calls received from the telephone line network 61 and P
The process of calling from the C terminal 51 or the telephone 53 is performed.
Reference numeral 31 denotes a server that converts a voice signal input from the telephone network 61 via the telephone connection node 21 into a voice packet signal, or converts a voice packet signal input from the Internet connection node 11 into a voice signal. The server 31 transmits and receives a control signal for telephone connection with the telephone connection node 21. Server 3
2 has the same function as the server 31 and has the telephone connection node 1
2 and the Internet connection node 22 are connected.

Reference numeral 41 denotes an IP address / telephone number management database for storing the IP address and telephone number of the terminal device 51 input from the server 31. The IP address and the telephone number entered in the IP address / telephone number management database 41 are associated with each other, for example, P
If the telephone number of the C terminal 51 is known, the corresponding IP
The data is stored on the database in such a data structure that an address can be obtained. The IP address / telephone number management database 42 stores the IP address and telephone number input from the server 32. 11 is the I supplied from the server 31
The Internet connection node connects to the provider A 72 by the P address, and the Internet connection node 22 connects the server 32 to the provider B 73.

Next, the operation of the busy transfer system to the Internet telephone according to the above configuration will be described. First, registration of the IP address that is the busy transfer destination of the PC terminal 51 will be described. FIG. 2 is a sequence diagram showing a procedure for registering an IP address from the PC terminal 51 to the IP address / telephone number management database 41. A procedure for registering an IP address will be described with reference to FIG. First, the PC terminal 51
Calls the telephone connection node 21 via the modem 52. Upon receiving this call, the telephone connection node 21 receives P
A response signal is sent to the C terminal 51 to establish a line.
Then, a signal for requesting the input of the service code and the transfer destination IP address is sent.

Based on the request signal transmitted from the telephone connection node 21, the PC terminal 51 dials a predetermined service code and an IP address following the predetermined service code. Finally, the PC terminal 51 issues a confirmation key, for example, "#". Dial. Also,
The telephone connection node 21 causes the telephone number of the PC terminal 51 to be transmitted according to a call request procedure of the telephone connection procedure. The telephone connection node 21 transfers the obtained IP address and telephone number to the server 31. The server 31 stores the input IP address and telephone number in the IP address / telephone number management database 41.

Next, automatic routing to an Internet telephone when a subscriber connected to the telephone network 61 receives a call to the PC terminal 51 connected to the Internet will be described. FIG. 3 is a sequence diagram showing a procedure for automatic routing to an Internet telephone and line disconnection. Here, it is assumed that there is an incoming call from the telephone 53 to the PC terminal 51 connected to the Internet provider A 72 via the telephone line network 61. First, the telephone 53 sends a call to the PC terminal 51, and the telephone connection node 21 receives a call signal via the telephone network 61. The telephone connection node 21 calls the PC terminal 51 by this incoming call, and determines that the terminal is busy. When the PC terminal 51 is busy, the telephone connection node 21 transmits to the server 31 a signal requesting a transfer destination IP address to which the telephone number of the PC terminal 51 which is the call request telephone number is added.

The server 31 accesses the IP address / telephone number management database 41 based on the request signal from the telephone connection node 21 and reads the transfer destination IP address corresponding to the incoming request telephone number. Then, the read IP address is supplied to the telephone connection node 21. The telephone connection node 21 receives the transfer destination IP input from the server 31.
Based on the IP address, the "IP
A busy notification signal for notifying that the address and the called subscriber are busy and preparing for a connection by Internet telephone is transmitted to the telephone 53 through the announcement trunk.

The server 31 accesses the Internet connection node 11 to perform routing for transmitting a call originating from the telephone 53 to the Internet telephone of the PC terminal 51. Internet connection node 11
Receives the transfer destination IP address from the server 31, calls the Internet service provider A 72,
Performs communication line connection processing. Then, the incoming call transmitted from the telephone 53 is interrupted to the PC terminal 51 connected to the Internet via the Internet service provider A.72. The Internet telephone of the PC terminal 51 receives the incoming call and transmits an incoming response signal.

The server 31 sends a signal to the telephone connection node 21 based on the incoming response signal received via the Internet connection node 11 to stop the voice signal being announced to the telephone 53. Then, the voice line connected to the telephone 53 is connected to the Internet connection node 11 via the telephone connection node 21 to complete the routing. That is, the server 31 converts the analog voice signal transmitted from the telephone 53 and input via the telephone connection node into a voice packet by A / D (analog / digital) conversion, and supplies the voice packet to the Internet connection node 11,
Alternatively, the voice packet transmitted from the Internet telephone of the PC terminal 51 and input from the Internet connection node 11 is D / A converted and sent to the telephone connection node to enable the telephone communication between the telephone 53 and the PC terminal 51 by the Internet telephone.

Next, with reference to FIG. 3, a description will be given of a case where a call is disconnected from a calling terminal and a case where a call is disconnected from a called terminal. The disconnection from the calling terminal is a disconnection from the telephone 53, and the disconnection request signal transmitted from the telephone 53 is received by the telephone connection node 21,
Sent to server 31. The server 31 receives this signal and causes the Internet connection node 11 to perform a process of disconnecting the connection to the Internet service provider A 72. Next, when an Internet telephone call of the PC terminal 51 which is the called terminal is disconnected, a packet of a disconnection signal is transmitted from the PC terminal 51 to the server 31. Server 3
1 receives this packet and sends a telephone disconnection request signal to the telephone connection node 21. Upon receiving the disconnection request signal, the telephone connection node 21 performs disconnection processing with the telephone 53.

[0021]

As described above, according to the present invention,
When a call is received to a terminal device connected to the Internet, the call is automatically routed to the Internet telephone of the terminal device via the server, and a call can be made, so that the effect of increasing the use efficiency of the subscriber line is obtained. . In addition, subscribers who frequently access the Internet and are worried about the problem of an important phone call or an emergency phone call being busy do not need to provide a separate subscriber line for the telephone line and the Internet connection. Economic effects can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a sequence diagram showing a procedure for registering a transfer destination IP address.

FIG. 3 is a sequence diagram showing a procedure of automatic routing to an Internet telephone.

[Explanation of symbols]

 11, 22 Internet connection node 12, 21 Telephone connection node 31, 32 Server 41, 42 IP address / telephone number management database 51 PC terminal 52 Modem 53 Telephone

Continued on the front page F-term (reference) 5K024 AA00 AA32 AA33 AA35 BB00 BB04 CC01 CC09 DD05 FF06 GG00 GG01 GG03 5K051 AA01 BB01 CC00 CC01 DD00 DD07 EE01 EE02 FF04 FF07 FF16 GG02 GG12 HH02H01H27 MMHHH NN21 PP03 RR05 RR11 RR24 SS07 SS08 UU17 UU18

Claims (6)

[Claims] 1. A terminal device having connection means for connecting to the Internet and having Internet telephone software mounted thereon, a telephone connection node connecting the terminal device to a telephone network, and analog / digital conversion of a voice signal. Means for connecting a voice communication line of the telephone line network connected to the telephone connection node to the Internet, an IP address and a telephone number of the terminal device input from the terminal device via the server And an Internet connection node connecting the server and an Internet service provider, wherein the terminal device is connected to the telephone line network while the terminal device is connected to the Internet via the Internet service provider. When an incoming call is received from the telephone, the server Reading the IP address of the terminal device from the database, transmitting a busy notification signal from the telephone connection node to the telephone, accessing the Internet connection node by the IP address, connecting to the Internet service provider, Cause a call from a telephone to be interrupted to the terminal device,
An incoming call to the Internet telephone stored in the terminal device is transferred to the Internet telephone. 2. The database according to claim 1, wherein the input IP address and the telephone number are stored so as to be related to each other, and stored so that one of the data can refer to the other data. 2. The busy transfer method to an Internet telephone according to 1. 3. The busy notification signal transmitted from the telephone connection node to the calling telephone indicates that the called subscriber terminal is busy and an Internet telephone program is running. 2. The method according to claim 1, further comprising a signal for notifying a transfer destination IP address. 4. The Internet telephone according to claim 1, wherein said server comprises a control signal transmitting / receiving means for transmitting and receiving a control signal for telephone connection with said telephone connection node. Busy transfer method. 5. The Internet telephone stored in the terminal device generates a response signal notifying that a voice call is possible when confirming an incoming call received via the Internet service provider. 2. The method according to claim 1, wherein the call is transmitted to the server. 6. The telephone connection node according to claim 6, wherein the server transmits a signal for stopping transmission of the busy notification signal to the telephone connection node based on a response signal indicating that voice communication is possible, received from the terminal device. 2. The busy transfer method to an Internet telephone according to 1.