JP2002247197A - Incoming call processing method for data communication line, incoming call processing system and ras unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain arrival of an incoming call to and making a speech with from a 3rd party terminal to a terminal conducting data communication by means of dialup connection. SOLUTION: Data cross-referencing access channel numbers with dialup numbers of terminals 1 connected to the Internet are registered to a switch 2 and data cross-referencing the access channel numbers with IP addresses are registered to a RAS (Remote Access Server) 4, respectively, when a third party terminal 6 makes an incoming call to the terminal 1, the switch 2 transfers the incoming call to the RAS 4 by a caller number of the access channel number, the RAS 4 extracts the IP address on the basis of the received access channel number and, using the IP address, sets up a new connection between the terminal 1 and the RAS 4 so as to attain incoming call notice, a speech and facsimile communication between the terminal 1 and the third party terminal 6 without disturbing data communication on the Internet through the dialup connection by the terminal 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call / call system during data communication, and more particularly, to an incoming call processing method, an incoming call processing system, and an RAS apparatus for a data communication line by dial-up connection.

[0002]

2. Description of the Related Art With the spread of the Internet in recent years, it has been frequently performed that a terminal device such as a personal computer (hereinafter referred to as "PC") is dial-up connected to an Internet connection company via a telephone line to perform data communication. For this reason, the telephone line is often held for a long time by a dial-up connection, so that it is often difficult to connect a telephone from a third party.

[0003] Further, if a call waiting (call waiting) service is received, data communication is interrupted or dial-up connection is cut off when a line interrupt from a third party occurs during data communication. An example has occurred.

Accordingly, a technique has been proposed that enables a user to be notified that a call waiting has occurred while data communication is continued.

FIG. 2 is a diagram showing a communication control system and a data communication terminal described in JP-A-2000-101737.

[0006] Data communication terminal 2 connected to telephone station 21
As a second, a call having a Caller ID modem in addition to a data communication unit, a communication control unit, a storage unit, an input unit, and a display unit.
A communication controller 23 including a weighting signal detector 24;
In order to avoid disconnection of data communication due to call waiting, the call destination of the call waiting automatically sends a data communication response to the destination even if no data communication response is output. When the call waiting signal detection unit 24 detects an incoming call for call waiting by setting a response time that does not disconnect, the call waiting signal detection unit 24 transmits a data communication interruption request signal to the data communication destination, and the like, and so forth. A method of performing communication control for enabling a response such as a telephone call is described.

FIG. 3 is a diagram showing a method of transmitting an incoming message by an intelligent network having an Internet call waiting function described in Japanese Patent Application Laid-Open No. 2000-224301. A plurality of exchanges 34a and 34b constituting a transmission network are connected via a common channel signaling network 39, and are connected to an Internet protocol network 38 at www.
A service control gateway device 31 for an intelligent network connected via a server 33,
The service control gateway device 31 receives a call waiting service request from a first terminal device connected to the transmission network via the subscriber lines 35a to 35n.
Information indicating that the terminal device is being connected to the Internet is stored in the user information management table of the www server 33. When the service control gateway device 31 is notified from one of the plurality of exchanges that the first terminal device has received an incoming call from the second terminal device, the service control gateway device 31 refers to the user information management table and receives an incoming message. Is transmitted to the first terminal device via the gateway device 37.

[0008]

According to the conventional method for solving the above-mentioned problems, a control system is provided for each subscriber line so that a data communication session is not disconnected when a call waiting service is activated, and voice is transmitted to an IP packet. A method of installing a data communication terminal having a special modem with a function to make the network function, or a method called Internet call waiting, in which a communication network is equipped with an intelligent network function and an Internet call waiting server. And both were very expensive realization methods.

(Purpose) An object of the present invention is to provide a method for processing an incoming call to a simple data communication line, an incoming call processing system, and an RAS apparatus that enable incoming calls or calls from a third party terminal during data communication by dial-up connection. Is to do.

[0010]

SUMMARY OF THE INVENTION According to the present invention, data communication is continued when a call is received from a third party terminal (for example, a telephone) during data communication by dial-up connection using a telephone line such as the Internet. In this system, incoming and outgoing telephone calls from a third-party terminal can be performed using the following devices and functions.

An outgoing call processing method according to the present invention is a method for receiving an incoming call from a switching device and an RAS device for processing an incoming call from a third party terminal (for example, a telephone) to a terminal device (for example, a personal computer) dial-up connected to the Internet. In the processing method, the exchange stores the connection line number of the terminal device connected to the dial-up connection and the dial-up number in association with each other, and transmits the connection line number to a RAS (remote access server) device. An incoming call from the client terminal to the terminal device is transferred to the RAS device by issuing a call notification using the connection line number, and the RAS device transmits the connection line number received from the exchange and the Internet IP address ( Port number) and save it, and receive a third-party terminal There extracts the IP address corresponding to the connection line number numbering notification if transferred, I between the terminal device and the RAS device by the IP address
It is characterized by establishing a point-to-point connection (for example, call waiting, number display, telephone call, facsimile communication) using P packets. The terminal device is equipped with a softphone program, and the RAS device enables a call between the terminal device and the third party terminal by performing IP packetization processing of voice data.

An incoming call processing system according to the present invention is an incoming call processing system comprising an exchange for processing an incoming call from a third party terminal to a terminal device dial-up-connected to the Internet and an RAS device, wherein the exchange comprises the terminal device. Identifies that a dial-up connection is being established, and when an incoming call from a third party terminal to the terminal device is received, the incoming call is transferred to the RAS device to which the dial-up connection is to be made by a call transfer service by the connection line number of the terminal device. The RAS device has a function of retaining association data between the connection line number of the dial-up connection and the IP address connected to the Internet, and a function of transferring the data from the exchange. The incoming call of the three-party terminal is sent to the terminal device that is dial-up connected by the connection line number. Identifies that a transfer call, point the IP address that is dial-up connection
And a function of connecting to the terminal device in a two-point format. The terminal device is equipped with a softphone program, and the RAS device enables a call between the terminal device and the third party terminal by performing IP packetization processing of voice data.

[0013] The RAS device of the present invention identifies that the terminal device is in a dial-up connection, and when receiving an incoming call from a third party terminal to the terminal device, converts the incoming call to a dial-up connection by a call transfer service. R ahead
An RA connected to an exchange having a function of transferring to an AS device by issuing a number using the connection line number of the terminal device.
S device, a function of retaining association data between a connection line number of the terminal device connected to the dial-up terminal and an IP address connected to the Internet, and an incoming call of a third party terminal transferred from the exchange. Having a function of identifying a transfer call from a terminal device under dial-up connection by the connection line number, and connecting to the terminal device in a point-to-point format with a dial-up connected IP address. It is characterized by the following. The RAS device is capable of making a voice call with the third party terminal to the terminal device equipped with a softphone program by IP packetizing voice data.

More specifically, when a PC receives a call from a third-party telephone while the PC is connected to the Internet by dial-up, the exchange has a function of identifying that the PC is in a dial-up connection, and a dial-up service by a call transfer service. It has a function of transferring an incoming call to a connected RAS (remote access server) device.

The RAS device has a dial-up connection originator number (number of a telephone line to which a PC is connected) and a port number (IP address) connected to the Internet.
The call of the third party terminal transferred from the exchange having the association data (cache) with the caller is a transfer call from the dial-up connected PC from the caller number (redirecting number: transfer source number). Is identified, the voice data is converted into an IP packet, and PPP (point-to-p-p) is sent to the PC via the dial-up connection port.
oint protocol) has a function to transmit data by connection.

The PC is equipped with a PC phone (softphone) that enables a telephone call using voice data in IP packets from a third party terminal.

(Operation) Registering the association data between the connection line number of the terminal device connected to the Internet and the dial-up number in the exchange, and the association data of the connection line number and the IP address in the RAS device, respectively.
When an incoming call is generated from the third party terminal to the terminal device, the exchange switches the incoming call to the RA by the notification of the connection line number.
The RAS device extracts the IP address based on the received connection line number, and establishes a new connection between the terminal device and the RAS device based on the IP address. Notification, call, facsimile communication, etc., between a terminal device and a third party terminal without hindering data communication on the Internet by the Internet. For example, this is realized by modifying the call processing program of the exchange and the dial-up connection program of the RAS device.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the incoming call system during data communication according to the present invention will be described in detail.

FIG. 1 is a block diagram showing a system configuration of the present embodiment. An exchange 2 for controlling a dial-up connection from the PC 1 to the Internet 5 and for controlling a call waiting from a third party telephone (third party telephone) 6 to the PC 1, a trunk line circuit 3, and remote access・ Server (remote access
server: RAS) 4.

The PC 1 has a function of making a dial-up connection to the Internet using a telephone line, and a function of a PC phone (softphone) for making a telephone call with the third-party telephone 6 by using voice data packetized into IP packets.

The exchange 2 is a dial-up connected PC.
Has a function of identifying the line state of 1 as line busy,
Further, when there is an incoming call from the third party telephone 6 to the PC at the time of the line busy due to the dial-up connection, the call transfer function is used to transfer the call to the dial-up connection destination, and the dial-up connection call and the call transfer For both calls, a function is provided for notifying the dial-up connection destination of the telephone number of the telephone line to which the PC 1 is connected as a caller number.

The trunk line circuit 3 terminates the telephone line from the exchange 2 and connects to the Internet 5 via a RAS (remote access server) 4.

The RAS 4 has, in addition to a normal dial-up Internet connection function, data for associating a dial-up connection caller number (telephone line number to which the PC 1 is connected) with a port number (IP address) connected to the Internet. And that the call of the third party telephone transferred from the exchange 2 is a transfer call from the PC 1 under dial-up connection from the caller number (redirecting number: transfer source number). Function, and further, voice data of a call from a third-party telephone is converted into an IP packet, and PPP (poin) is sent to the PC 1 via the dial-up connection port.
t-to-point protocol).

The third-party telephone 6 is a telephone that can make a call to the PC 1 during dial-up connection, and FIG. 1 shows a call waiting connection state to the PC 1 that is connected to the Internet. (Description of Operation) Next, the operation during data communication of the incoming call system of the present embodiment will be described with reference to FIG.

When data communication is performed, the PC 1 executes RAS 4
Is dialed, the dial-up number N = AAAAAAA of the trunk line circuit 3 accommodating is connected to the Internet.

The exchange 2 confirms that the PC 1 has dialed the dial-up number N = AAAAAAA to connect to the Internet, and that the telephone line number N to which the PC 1 has been connected is connected.
= Temporarily stored as call information associated with BBBBBBB This call information is held in the exchange 2 until the dial-up connection is disconnected. Further, the exchange 2 sends the line number N = BBBBBBBB to which the PC 1 is connected to the RAS 4 by using the issue number notification function. RAS4 is a port number (IP address) connected to the Internet
xxx. xxx. xxx. xxx) and caller number N = B
BBBBBB is associated and temporarily registered in the table. The information registered in this table is held in the RAS 4 until the dial-up connection is disconnected. In this state, the telephone line from PC1 to RAS4 is busy.

In the above state, when a call is sent from the third party telephone 6 to the line N = BBBBBBBB being dial-up connected, the third party telephone 6 is normally connected to a busy tone.
Call is not connected. On the other hand, line N = BBBBBBBBBB
Has a call waiting (call waiting) service, the call from the third party telephone 6 is sent to the line N =
The interruption to the BBBBBBBB interrupts the data communication of the PC1.

In the incoming call system of the present embodiment, the line N = BB during dial-up connection from the third party telephone 6
When a call arrives at BBBBBB, the exchange 2 transmits the temporarily stored call information (the dial-up number N = AA).
Telephone line number N = B between AAAAA and PC1
PC1 with reference to BBBBBBB (call information associated with BBBBBBB).
Recognizes that a dial-up connection to N = AAAAAAA is being performed, and transfers the call from the third party telephone 6 to the RAS 4 using the call transfer function. At this time, the line number N = B connected to the transfer source PC 1
Send BBBBBBB to RAS4.

In the RAS 4, the line number N = BBBBBBBB received from the exchange 2 and the number (port number (IP address x
xx. xxx. xxx. xxx) and caller number N = BB
BBBBBB), and if they match, extract the IP address of the relevant dial-up connected port, convert the voice data into IP packets, and establish a session separate from PC1 and RAS4. And establish a PPP (point-to-point protocol) connection.

Since the PC 1 is equipped with a PC phone (softphone) program that enables voice communication with the third party telephone 6 from the RAS 4, the data communication is continued using this session. Thus, it is possible to receive and talk on a call from a third party telephone.

As described above, in this embodiment, the exchange stores the association between the connection line number of the terminal device under dial-up connection and the dial-up number, and transmits the connection line number to the RAS device. Storing the received connection line number and the IP address of the Internet in association with each other, and receiving an incoming call from the third party telephone to the exchange to the terminal device by issuing a call using the connection line number to the RAS. Device, the RAS device extracts the IP address corresponding to the connection line number of the call number notification when the incoming call of the third party telephone is transferred,
Accepting a call from a third-party telephone while data communication is continued by establishing a point-to-point connection by an IP packet between the terminal device and the RAS device using the IP address・
Calls can be made.

(Other Embodiments) In the above embodiment, data communication is continued when a call is received from a third party telephone during data communication by dial-up connection using a telephone line to the Internet. In the above example, an incoming call and a telephone call from a third-party telephone are enabled, but a call is not made, and only an incoming call display or a caller ID display from the third-party telephone is displayed. It is also possible.

Further, by installing a general-purpose PC-FAX program on the PC 1, FAX reception during data communication becomes possible. Alternatively, by installing a voice response / recording program in the PC 1, it is possible to perform the answering machine function during data communication.

[0034]

According to the present invention, it is possible to accept and call a call from a third party terminal while continuing data communication by dial-up connection to the Internet.

The functions realized by the incoming call system during data communication according to the present invention include a call processing program for an exchange and a RAS without adding any additional device (hardware) to a telephone line or a RAS device. This is possible by modifying the dial-up connection program, so that it can be realized without significantly affecting the existing network. In other words, since a major change is not required for the program and system configuration of the existing network, it can be implemented very simply and inexpensively.

Further, when a PC phone (softphone) or other programs are installed in the terminal device, a general-purpose software program can be used as it is, and a special modem device or the like can be used for each subscriber circuit. No additional installation is required, and the burden on the user can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of an incoming call processing method for a data communication line, an incoming call processing system, and an RAS apparatus of the present invention.

FIG. 2 is a diagram showing a conventional communication control system and a data communication terminal.

FIG. 3 is a diagram illustrating a transmission method of a received message by a conventional intelligent network.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Personal computer (PC) 2 Switch 3 Trunk line circuit 4 Remote access server (RAS) 5 Internet 6 Telephone

Claims (6)

[Claims] 1. An incoming call processing method comprising an exchange and an RAS device for processing an incoming call from a third-party terminal to a terminal device that is dial-up connected to the Internet, wherein the exchange connects the terminal device during dial-up connection. While storing the line number and the dial-up number in association with each other, transmitting the connection line number to the RAS device, an incoming call from the third party terminal to the terminal device is issued by a call notification using the connection line number. RAS device, the RAS device stores the connection line number received from the exchange and the IP address of the Internet in association with each other, and makes a call when an incoming call of a third party terminal is forwarded from the exchange. An IP address corresponding to the connection line number in the number notification is extracted, and the terminal device and R Transmission processing method characterized by establishing a connection with point-to-point format by IP packets between S device. 2. The terminal device is equipped with a softphone program, and the RAS device is capable of making a call between the terminal device and the third party terminal by IP packetization processing of voice data. The transmission processing method according to claim 1, wherein 3. An incoming call processing system comprising an exchange and an RAS device for processing an incoming call from a third-party terminal to a terminal device that is dial-up connected to the Internet, wherein the exchange device has the terminal device being dial-up connected. When an incoming call from a third party terminal to the terminal device is received, the incoming call is transmitted to a RAS device to which a dial-up connection is to be made by a call transfer service using a connection line number of the terminal device. The RAS device has a function of retaining association data between a connection line number of a dial-up connection and an IP address connected to the Internet, and an incoming call of a third party terminal transferred from the exchange. Is identified by the connection line number as a transfer call from a terminal device under dial-up connection. Incoming processing system characterized by having a function for connecting a point-to-point format IP address that is dial-up connection to the terminal device. 4. The terminal device is equipped with a softphone program, and the RAS device enables a telephone call between the terminal device and the third party terminal by performing IP packetization processing of voice data. The incoming call processing system according to claim 3, wherein: 5. When a terminal device identifies that a dial-up connection is being made and receives an incoming call to the terminal device from a third party terminal, the incoming call is transferred to a dial-up connection destination RAS device by a call transfer service. An RAS device connected to an exchange having a function of transferring by a number notification using a connection line number of the terminal device, wherein the connection line number of the terminal device during dial-up connection, an IP address connected to the Internet, And the function of retaining the association data of the third party terminal transferred from the exchange, the connection line number is used to identify that the call is a transfer call from a terminal device being dial-up connected, and And a function to connect to the terminal device in a point-to-point format with the IP address RAS and wherein the. 6. The communication between the third party terminal and the terminal device equipped with a softphone program by making voice data into an IP packet. RAS equipment.