JPH10164094A - Channel establishing method/system between computers using isdn line and storage medium storing channel establishing program between computers using isdn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a channel only by means of the request of a client on a calling side and to improve the continuity and convenience of sound communication by using one channel in an ISDN line to dial up connection to a provider and using the other channel for information for establishing channel. SOLUTION: When the clients 1 and 2 execute communication by dial-up- connecting them to an internet 4 by the ISDN line, the calling client 1 calls the client 2 by an ISDN network 3, and the identifier of a sound communication request is informed by the other line via the internet 4. The reception side client 2 uses the channel which does not use the ISDN line and informs an IP address obtained by dial up connection to the provider 6 to the client 1. The client 1 is automatically connected to a provider 5 and the channel is established by using the communication protocol by referring to the IP address of the client 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and system for establishing a communication path between computers using an ISDN line and a storage medium storing a program for establishing a communication path between computers using an ISDN line. IP
Computer communication network (TCP / I)
P network) or a computer using an ISDN line that establishes a communication path between two computers connected via a provider that provides a connection service to a TCP / IP network using an ISDN line function. The present invention relates to a method and system for establishing a communication path and a storage medium storing a program for establishing a communication path between computers using an ISDN line.

Although the present invention is described using an example in which the Internet is assumed as an example of a TCP / IP network, the present invention can be similarly applied to a general TCP / IP network. More specifically, two clients who want to start communication use an ISDN line (here, the ISDN line is at least 64 lines per line).
2 kb / s information channels (B channels), 16 kb
/ S is a computer that performs communication by dial-up connection to a TCP / IP network via a line having one control channel (D channel), or a client (computer) connected to the TCP / IP network connects to the TCP / IP network. If the called client (computer) is a computer that performs communication by dial-up connection to a TCP / IP network via an ISDN line, the former case is an ISDN network-TCP / I
P network (Internet)-Via an ISDN network; in the latter case, establishment of a communication path between computers using an ISDN line for establishing a communication path via a dedicated line-TCP / IP network (Internet)-ISDN network The present invention relates to a method and a system and a storage medium storing a program for establishing a communication path between computers using an ISDN line.

[0003]

2. Description of the Related Art In a communication between a LAN and a computer, a service for establishing a communication path between clients, for example, a method for establishing a communication path for voice communication between clients in Internet phone communication is firstly disclosed. Both the receiving client and the receiving client
A manual dial-up connection is made to the provider, which is the connection point to the Internet, and the calling client,
It is necessary on the premise that the operation of connecting to the server supporting the Internet phone communication (the client name and the IP address are registered by this operation) has been completed for both the receiving side clients. Then, the user of the calling client obtains the IP address of the called client by performing an operation of selecting the called client from the list of clients connected to the server, and then obtains the IP address (the called address) obtained from the calling client. The communication path is established for the client on the side.

[0004]

As described above, as described above,
Conventionally, especially on the Internet, it is impossible to establish a communication channel only by the intention of the originating client, and a communication channel between the originating client and the destination client must be established unless the destination client connects to the rendezvous server etc. There is a problem that can not be.

[0005] Therefore, when it is desired to talk with a specific partner, it is necessary to indicate the time in advance and register each other at the time with the rendezvous server. The present invention has been made in view of the above points, and solves the above-mentioned conventional problems. An ISD that can be connected to a destination client only with the intention of the originating client is provided.
It is an object of the present invention to provide a method and system for establishing a communication path between computers using N lines and a storage medium storing a program for establishing a communication path between computers using an ISDN line.

A further object of the present invention is to provide an operation for a user of an originating client to input a number (telephone number) of an ISDN line for dial-up connection to the Internet accommodated by the destination client; A method and system for establishing a communication path between computers using an ISDN line capable of automatically establishing a communication path for performing voice communication almost in real time only by an operation of a user who understands an incoming call, and an ISDN line. An object of the present invention is to provide a storage medium storing a program for establishing a communication path between computers used.

[0007]

FIG. 1 is a diagram for explaining a first principle of the present invention. The first invention is TCP
In a method for establishing a communication path between two computers connected directly to an IP / IP network or via a provider, a computer connected to a TCP / IP network by a dial-up connection between an incoming computer and an ISDN line to the provider The originating computer has an ISDN line and can be connected to a computer whose IP address is known, and the originating computer and the destination computer are dial-up connected to a TCP / IP network via the ISDN line. If the calling computer is a computer that communicates with the receiving computer, the user of the calling computer inputs the number of the ISDN line accommodated by the called computer (step 1).
A call is sent to the called computer using the N line (step 2), and the called computer responds (step 3),
The destination computer notifies the destination computer of an identifier indicating that the originating computer is requesting the establishment of a communication path via the TCP / IP network (step 4), and the destination computer obtains the identifier, and the information channel of the ISDN line Or by using a control channel that is not being used,
A dial-up connection is made to a provider which is a connection point to the CP / IP network (step 5), an IP address is obtained from the provider (step 6), and an identifier is received from the calling computer to the calling computer on the same channel. Notify (step 7) and the calling computer
A communication path with the called computer is established using the IP address notified from the called computer (step 8).

Further, in the present invention, when the calling computer notifies the called computer of the identifier in step 4, the control channel (D channel) of the ISDN line is used. Further, according to the present invention, when the originating computer notifies the destination computer of the identifier in the above step 4, the information channel (B channel) of the ISDN line is used. The side computer uses an unused channel among the information channel or the control channel of the ISDN line when making a dial-up connection to the provider.

FIG. 2 is a diagram for explaining the second principle of the present invention. A second invention is a method for establishing a communication path between two computers connected directly to a TCP / IP network or via a provider. In the method, the destination computer dials up the provider over an ISDN line to establish a TCP connection. / IP is a computer connected to the IP network and the originating computer is
A computer connected to a CP / IP network, and only the called computer is connected to the TCP over the ISDN line.
/ When the computer that performs communication by dial-up connection to the IP network,
The destination computer is notified of an identifier indicating that the establishment of a communication path via the TCP / IP network is requested using the N line (step 10), and the destination computer obtains the identifier and obtains information on the ISDN line. Using an unused channel or control channel, TC
A dial-up connection is made to a provider, which is a connection point to the P / IP network (step 11), an IP address is obtained from the provider (step 12), and an identifier is received from the calling computer to the calling computer to the calling computer. Notifying (step 13), the calling computer establishes a communication path with the called computer using the IP address notified from the called computer (step 14).

Further, in the present invention, in step 10 described above, when the originating computer notifies the destination computer of the identifier, the control channel (D channel) of the ISDN line is used. In the present invention, the information computer (B channel) of the ISDN line is used when the originating computer notifies the destination computer of the identifier in step 10 described above.

In the present invention, in step 11,
When the destination computer makes a dial-up connection to the provider, the destination computer uses an unused channel among the information channel or the control channel of the ISDN line. FIG. 3 is a first principle configuration diagram of the present invention. The third invention is TCP
A communication path establishment system consisting of two computers connected directly to an IP / IP network or via a provider, which is a computer connected to a TCP / IP network by dial-up connection to the provider over an ISDN line. Side computer 200 and I
An originating computer 1 that has an SDN line and can be connected to a computer whose IP address is known
When 00 is a computer that performs communication by dial-up connection to a TCP / IP network via the ISDN line, the calling computer 100 inputs the number of the ISDN line accommodated by the called computer 200.
N line number input means 110, transmitting means 120 for transmitting to the destination computer 200 using the ISDN line,
When a response is received from the receiving computer 200, the TCP /
Communication path establishment request notifying means 130 for notifying the destination computer 200 of a communication path establishment request via the IP network
And communication path establishing means 140 for establishing a communication path with the destination computer 200 based on the address information notified from the destination computer 200. The destination computer 200 Provider connection means 210 for dial-up connection to a provider, which is a connection point to a TCP / IP network, based on the obtained communication path establishment request, and an IP address for notifying the originating computer 100 of an IP address given by the provider. Notification means 220.

FIG. 4 is a block diagram showing the second principle of the present invention. The fourth invention directly connects to a TCP / IP network.
Alternatively, a communication path establishment system including two computers connected via a provider, wherein a TCP connection is established by dial-up connection to the provider over an ISDN line.
When the destination computer 200 is a computer connected to the / IP network and the destination computer 100 is a computer connected to the TCP / IP network via a dedicated line, the destination computer 100
TC using the ISDN line to the destination computer 200
Communication path establishment request notifying means 1 for notifying a destination computer 200 of a communication path establishment request via a P / IP network
30 and communication path establishing means 140 for establishing a communication path with the destination computer 200 based on the address information notified from the destination computer 200. The destination computer 200 Provider connection means 210 for dial-up connection to a provider, which is a connection point to a TCP / IP network, based on a communication path establishment request acquired from the provider, and an IP address for notifying the originating computer 100 of an IP address given by the provider Notification means 220.

In the third and fourth inventions, the communication path establishment request notifying means 130 has means for notifying the destination computer 200 of the identifier of the request as the communication path establishment request. In the third and fourth aspects of the present invention, the communication path establishment request notifying unit 130 is configured to send the communication path establishment request when the originating computer 100 notifies the destination computer 200 of the communication path establishment request.
It includes D channel communication means using a control channel (D channel) of the SDN line.

In the third and fourth inventions, the communication path establishment request notifying means 130 transmits the communication path establishment request to the destination computer 200 when the originating computer 100 notifies the destination computer 200 of the communication path establishment request.
B using the information channel (B channel) of the ISDN line
Including channel communication means. In the third and fourth inventions, the provider connection means 21 of the destination computer 200
0 includes connection means using an unused channel among the information channel or control channel of the ISDN line.

In the third and fourth inventions, the IP address notifying means 220 of the destination computer 200 includes means for notifying the source computer 100 on the same channel that has received the identifier from the source computer 100. The present invention relates to a storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider, wherein Dial-up connection to TCP / IP
A destination computer, which is a computer connected to the network, and an originating computer, which is a computer having an ISDN line and which can be connected to a computer whose IP address is known, are dial-up connected to the TCP / IP network via the ISDN line. An ISDN line number input process for inputting the number of an ISDN line accommodated in the destination computer, which is installed in the originating computer when the computer performs communication;
When a call is transmitted from the called computer to the called computer using the line and a response is received from the called computer, the TCP /
A communication path establishment request notification process for notifying the destination computer of a communication path establishment request via the IP network, and communication for establishing a communication path with the destination computer based on the address information notified from the destination computer. Route establishment process.

The present invention relates to a storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected to a TCP / IP network directly or via a provider,
A destination computer which is a computer connected to a TCP / IP network by dial-up connection with a provider through an ISDN line,
The originating computer, which is a computer that can be connected to the computer whose address has been determined, is connected to the T
When the computer performs communication by dial-up connection to the CP / IP network, it is a connection point to the TCP / IP network based on a communication path establishment request acquired from the calling computer, which is installed in the called computer. Provider connection process for dial-up connection with the provider and IP provided by the provider
And an IP address notification process for notifying the originating computer of the address.

The present invention relates to a storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider,
When a calling computer is a computer connected to a TCP / IP network by dial-up connection to an Internet service provider over an ISDN line, and a calling computer is a computer connected to a TCP / IP network via a dedicated line. A communication path establishment request notification process for notifying the destination computer of a communication path establishment request via the TCP / IP network using the ISDN line to the destination computer, which is installed in the computer, and receiving the notification from the destination computer. A communication path establishing process for establishing a communication path with the destination computer based on the address information.

The present invention is a storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider,
When the destination computer, which is a computer connected to the TCP / IP network by dial-up connection to the provider over the ISDN line, and the calling computer, which is a computer connected to the TCP / IP network via a dedicated line, A provider connection process, which is installed in the computer and dial-up connects to a provider which is a connection point to a TCP / IP network based on a communication path establishment request acquired from a caller computer, and an IP address given by the provider.
And an IP address notification process for notifying the originating computer.

The above-mentioned communication path establishment request notification process installed in the caller computer has a process of notifying the destination computer of a request identifier as a communication path establishment request. The communication channel establishment request notification process installed in the above-mentioned originating computer controls the originating computer to use the control channel (D channel) of the ISDN line when notifying the destination computer of the communication channel establishment request. Includes D channel communication control process.

The above-described communication path establishment request notification process installed in the caller computer includes the following steps: when the caller computer notifies the receiver computer of the communication path establishment request,
A B channel communication control process for controlling to use the information channel (B channel) of the ISDN line is included. The provider connection process installed in the above-mentioned destination computer includes a connection control process for controlling to use an unused channel among the information channel or the control channel of the ISDN line.

[0021] The IP address notification process installed on the destination computer includes a process for controlling the destination computer to notify the source computer on the same channel that has received the identifier from the source computer. According to the present invention, the two computers that start communication are computers that perform communication by dial-up connection to a TCP / IP network via an ISDN line, or the originating computer is connected to a TCP / IP network. On the computer, the destination computer is T
In the case of a computer that performs communication by dial-up connection to a CP / IP network, in the former case, the ISDN network-TCP / IP network-ISDN
In the latter case, the communication path is established via a dedicated line, a TCP / IP network, and an ISDN network, so that the user can use the high-speed characteristics of ISDN and can use existing control channel protocols. ing.

The present invention relates to a case where two computers to start communication are computers that perform communication by dialing up and connecting to a TCP / IP network via an ISDN line, or a case where the originating computer is a T
The present invention can be applied to both a computer connected to a CP / IP network and a computer in which a receiving computer dials up to and connects to a TCP / IP network via an ISDN line to perform communication. That is, in the case of the former, it is via the ISDN network-TCP / IP network (Internet) -ISDN network, and in the case of the latter,
Dedicated line-TCP / IP network (Internet)
-Establish a communication path for computer communication via the ISDN network in real time.

Further, according to the present invention, by transmitting an identifier for a communication channel establishment request from the originating computer to the destination computer, the destination computer automatically connects to the provider based on the identifier. By transmitting the IP address obtained from the provider to the calling computer, a communication path between the calling computer and the called computer can be established.

Further, when the communication channel establishment request is notified, the IS
There are two methods for notifying the identifier using the DN line, and the D channel of the ISDN line is used (ISD
N communication protocol call setup message (SETUP)
Use the user-user information element. Also, ISDN
There is a method of using the B channel of the line. In this way, when the called computer acquires the identifier, the called computer makes a dial-up connection to the provider, which is a connection point to the TCP / IP network, using a channel that is not using the ISDN line, and is given by the provider. Is notified to the calling side computer on the same channel as the information received from the calling side computer of the ISDN line.

[0025] Of the two computers which are to start the communication shown in FIG.
A computer connected to a P / IP network,
If the destination computer is a computer that performs communication by dial-up connection to a TCP / IP network via an ISDN line, the originating computer uses TCP / IP
Since there is no need to dial up to a network, the operations in steps 1 to 3 in FIG. 1 are not required. Except for this, the operation is the same as that of FIG.

It is to be noted that the receiving side computer uses a dedicated line for TCP.
If the computer is connected to the / IP network, there is no need to use this method because the IP address of the destination computer is fixed and the computer is always connected to the TCP / IP network.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first communication channel establishment system according to the present invention will be described. The first communication path establishment system is a computer in which a called computer (hereinafter, referred to as a called client) connects to the Internet by dial-up connection to a provider via an ISDN line, and a calling computer (hereinafter, called a calling client). This is a computer that has an ISDN line and can be connected to a computer whose IP address is known. The originating client and the destination client dial up to the Internet via the ISDN line to perform communication. It is assumed that the system is a computer to perform.

FIG. 5 shows the configuration of the first communication channel establishment system of the present invention. The system shown in FIG. 1 includes two clients 1 and 2, an ISDN network 3, and the Internet 4 including providers 5 and 6. Each of the clients 1 and 2 has the same configuration and includes a display unit 7, an input unit 8, a control unit 9, a connection control unit 10, and a line control unit 11.

The Internet 4 has a provider 5 to which the client 1 connects by dial-up and a provider 6 to which the client 2 connects by dial-up. Further, an ISDN network 3 is interposed between the client 1 and the provider 5 and between the client 2 and the provider 6.

The display unit 7 of each of the clients 1 and 2 displays input information, received information, and the like. The input unit 8 allows a user of each client to input a dial number of an ISDN line. The control unit 9 instructs the connection control unit 10 and the line control unit 11 to exchange control information between clients and to perform line connection.

The connection control unit 10 notifies the control unit 9 of the IP address given by the provider. Line control unit 1
1 uses a connection with a provider, a D channel of an ISDN line (using a user / user information element of a call setup message (SETUP) of an ISDN communication protocol) or a B channel according to an instruction from the control unit 10. To exchange control information between clients. further,
Automatically dial up your provider using another channel.

In the following, a client 1 and a client 2
Is a computer that performs a dial-up connection with the Internet 4 via an ISDN line for communication, and establishes a communication path for performing voice communication with the destination client 2 via the Internet 4 in response to a request from the originating client 1. The flow will be described. (1) The user of the calling side client 1 inputs the line number of the ISDN line (telephone number of the called side client 2) accommodated by the called side client 2 in the input section 8.

(2) The originating client 1 sends a call to the destination client 2 via the ISDN line, and after the destination client 2 automatically responds, the originating client 1 sends the destination An identifier indicating that it is desired to establish a communication path with the client 2 and perform voice communication is notified. This is the D channel (I
SDN communication protocol call setup message (SETU
P) of the user / user information element) or the B channel, and the display unit 7 of the destination client 2 displays a message indicating that the user of the originating client 1 is requesting voice communication via the Internet 4. Do. The identifier includes a sign indicating that communication by the Internet phone is requested and additional information (date, time, etc.).

(3) The user of the called client 2
If there is an intention to acknowledge communication with the calling client 1, an operation of understanding is performed. Thereby, the receiving side client 2
A dial-up connection is made to the provider 6 using an ISDN line (one of the two channels not being used), an IP address is obtained from the provider 6, and
The IP address is notified to the originating client 1 using the same channel as that used to receive the information from the originating client 1 of the SDN line, and this channel is disconnected.

(4) The originating client 1 automatically makes a dial-up connection to the provider 5, refers to the IP address notified from the receiving client 2, and uses the inter-computer communication protocol on the Internet 4. A communication path is established with the destination client 2. IP
As a communication method after the acquisition of the address, a method of performing existing socket communication in the transport layer on the UDP protocol is used. Voice communication is realized by exchanging encoded voice data with each other on this communication path.

Next, a second communication path establishing system according to the present invention will be described. The second communication path establishment system is a computer in which a called client connects to the Internet by dialing up a provider over an ISDN line, and a calling client is a computer that connects to the Internet through a dedicated line. It is assumed that the system is a computer in which only the terminating side client performs communication by dial-up connection to the Internet via the ISDN line.

FIG. 6 is a configuration diagram of a second communication path establishment system according to the present invention. In the second communication path establishment system shown in the figure, the originating client 20 has a configuration in which a LAN interface 12 is added to the originating client 1 shown in FIG.
N13 is connected, and a dedicated line 15 is interposed between the dedicated line interface device 14 and the provider 5.
Only the terminating client 2 is connected to a provider 6 of the Internet 4 by an ISDN line.

In the following, the originating client 20 is connected to the dedicated line 1
5 is connected to the Internet 4 and the destination client 2
Is a computer that communicates by dial-up connection to the Internet 4 via an ISDN line,
A flow of establishing a communication path for performing voice communication with the destination client 2 via the Internet in response to a request from the originating client 20 will be described.

(1) The originating client 20 notifies, via the Internet 4, an identifier indicating that it wants to establish a communication path with the destination client 2 and perform voice communication. This is the D channel of the ISDN line (ISDN
The user is notified by a call setup message (SETUP user / user information element) of the communication protocol or the B channel, and the display unit 7 of the destination client 2 displays the voice communication of the user of the originating client 1 via the Internet 4. Is displayed.

(2) The user of the called client 2
If there is an intention to understand the communication with the originating client 20,
The operation of the consent is performed from the input unit 8. As a result, the destination client 2 makes a dial-up connection to the provider 6 using the ISDN line (one of the two channels that is not in use), obtains an IP address from the provider 6, and sets the originating side of the ISDN line. The IP address is notified to the originating client 20 using the same channel on which the information was received from the client 20, and then this channel is disconnected.

(3) The calling client 20 refers to the IP address notified from the called client 2 and
Dial-up connection to a provider 5 on the Internet 4 via a dedicated line, obtains its own IP address, and establishes a communication path with the called client 2 on the Internet 4 using a computer-to-computer communication protocol. I do.

[0042]

Embodiments of the present invention will be described below. The following embodiment will be described based on the configuration shown in FIG.
FIG. 7 is a sequence chart for establishing a communication channel according to an embodiment of the present invention. The example shown in FIG. 1 is a computer in which a calling client 1 and a called client 2 connect to the Internet 4 by dial-up connection with providers 5 and 6 over an ISDN line 3.
Is a computer that has an ISDN line and can be connected to a computer whose IP address is known, and that the originating client and the destination client are dial-up connected to the Internet via the ISDN line for communication. .

The following example is realized using software using Windows-API. Step 101) The originating client 1 inputs the dial number of the ISDN line of the destination client 2 from the input unit 8. Step 102) A call is transmitted to the destination client 2 by the control unit 9, connection control unit 10, and line control unit 11 of the originating client 1.

Step 103) Called client 2
Automatically responds to the incoming call to the originating client 1 using the line Accept function and the line Answer function. Step 104) The originating client 1 sends to the destination client 2 a command to perform voice communication via the Internet. In this example, line Make
It is assumed that user / user information is set in the LPLINECALLPARAMS type structure of the fifth parameter of the Call function.

Step 105) Called client 2
Is a command from the originating client 1 (line Get Cal
l The user / user information is acquired from the LPLINECALLINFO type structure of the second parameter of the info function, and the acquired command (a request to perform voice communication via the Internet) is displayed on the display unit 7. At this time, the display unit 7
, It is also possible to confirm the intention of the user of the receiving client 2. In this case, the user is required to confirm the intention of the user of the receiving client 2 because a call charge for transmitting to the Internet is charged regardless of the receiving side.

Step 106) Called client 2
Performs an operation of acknowledging a call via the Internet from the input unit 8. Step 107) The control unit 9, the connection control unit 10, and the line control unit 11 of the destination client 2 automatically make a dial-up connection to the provider 6 and request its own IP address. At this time, Windows Remote Access Security
Use the RasDial function of the rvice API.

Step 108) Obtain the own IP address from the provider 6. Step 109) Notify the originating client 1 of its own IP address obtained from the provider 6. At this time, user / user information is set in the second parameter of the line Send User User info function. Thereafter, by cutting the ISDN line set in the above step 104, no call fee is charged thereafter.

Step 110) Calling side client 1
Is the IP address (lineGet Call
When the user / user information is obtained from the LPLINECALLINFO type structure of the second parameter of the info function, the provider 5
Automatically dial up and request its own IP address. At this time, Windows Remote
The RasDial function of Access Service API shall be used.

Step 111) Calling side client 1
Obtains an IP address from the provider 5. Step 112) Transmission / reception of a voice packet with the destination client 2 is started by the WinSock API of Windows. At this time, a datagram-type socket (for UDP communication) is generated, and transmission / reception of data with respect to the partner IP address is started.

Thus, the encoded voice data can be exchanged with the destination client in response to a request (identifier) from the originating client. Although the above embodiment has been described based on the configuration shown in FIG. 5, the configuration shown in FIG. 6 does not require the input of the first destination ISDN number from the originating client. Is similar to the operation of the configuration shown in FIG.

Although the above embodiment has been described based on the configurations shown in FIGS. 5 and 6, in this manner, the components of each client are constructed by a program, and the disk drive connected to the computer of the client is used. It can be stored in a portable storage medium such as a floppy disk or a CD-ROM, and installed on a computer when establishing a communication path, so that it can be used for general purposes.

In the embodiment of the present invention, TCP / IP
Although the description has been made on the assumption that the Internet is an example of a network, the present invention is not limited to this example.
The same can be applied to a CP / IP network. It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified and applied within the scope of the claims.

[0053]

As described above, according to the method and system for establishing a communication path between computers using an ISDN line and the storage medium storing a program for establishing a communication path between computers using an ISDN line according to the present invention, as described above. Conventionally, by using one channel of the line for dial-up connection to the provider and the other channel for exchanging information for establishing a communication path, dial-up connection to the Internet and Internet phone communication Since it was possible only with the client whose IP address was registered in the auxiliary server, it was necessary to make preparations such as indicating the connection time with the target communication partner in advance. It can be performed at the request of the client on the side, and the connectivity of voice communication via the Internet Flights can be improved.

Further, according to the present invention, the user of the originating client performs an operation of inputting the number of the ISDN line for dial-up connection to the Internet accommodating the destination client. It is possible to establish a communication path for voice communication between the originating client and the destination client with a simple operation that only understands.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a first principle of the present invention.

FIG. 2 is a diagram for explaining a second principle of the present invention.

FIG. 3 is a first principle configuration diagram of the present invention.

FIG. 4 is a second principle configuration diagram of the present invention.

FIG. 5 is a configuration diagram of a first communication path establishment system of the present invention.

FIG. 6 is a configuration diagram of a second communication path establishment system of the present invention.

FIG. 7 is a sequence chart for establishing a communication path according to an embodiment of the present invention.

[Description of Signs] 1, 2 clients 3 ISDN network 4 Internet 5, 6 Provider 7 Display unit 8 Input unit 9 Control unit 10 Connection control unit 11 Line control unit 12 LAN interface 13 LAN 14 Dedicated line interface device 15 Dedicated line 100 Side client 110 ISDN line number input means 120 transmitting means 130 communication path establishment request notifying means 140 communication path establishing means 200 terminating client 210 provider connection means 220 IP address notification means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Keiko Yokoyama, Inventor, Nippon Telegraph and Telephone Corporation, 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo

Claims (24)

[Claims] 1. A method for connecting directly to a computer communication network (hereinafter, referred to as a TCP / IP network) based on a TCP / IP system or via a provider (hereinafter, simply referred to as a provider) for providing a connection service to the TCP / IP network. In a method for establishing a communication path between two connected computers, the destination computer is a computer that connects to a TCP / IP network by dial-up connection to a provider over an ISDN line, and the originating computer is an I / O computer.
A computer that has an SDN line and can be connected to a computer whose IP address has been identified, wherein the originating computer and the destination computer are connected to the TCP via the ISDN line.
/ IP is a computer that performs communication by dial-up connection to a network, the user of the calling computer inputs the number of the ISDN line accommodated by the called computer, and the calling computer uses the ISDN line. To the called computer, the called computer responds, and an identifier indicating that the calling computer is requesting the establishment of a communication path via the TCP / IP network is notified to the called computer. The receiving computer acquires the identifier, and
A dial-up connection is made to a provider, which is a connection point to the TCP / IP network, using an unused channel out of an information channel or a control channel of the SDN line, and an IP address given by the provider is transmitted to the originating computer. From the same channel that has received the identifier from the destination computer, and the source computer establishes a communication path with the destination computer using the IP address notified from the destination computer. ISDN characterized by
A method for establishing a communication path between computers using a line. 2. The communication path between computers using an ISDN line according to claim 1, wherein the originating computer uses the control channel (D channel) of the ISDN line when notifying the destination computer of the identifier. How to establish. 3. The communication path between computers using an ISDN line according to claim 1, wherein when the originating computer notifies the destination computer of the identifier, the information channel (B channel) of the ISDN line is used. How to establish. 4. The computer using an ISDN line according to claim 1, wherein the destination computer uses an information channel or a control channel of the ISDN line which is not used when dialing up the provider. Communication path establishment method. 5. A method for establishing a communication path between two computers connected directly to a TCP / IP network or via a provider, wherein the destination computer dials up the provider via an ISDN line to establish a TCP / IP connection. A computer connected to an IP network, a calling computer is a computer connected to a TCP / IP network via a dedicated line, and a called computer is a computer connected to a TCP / IP network via the ISDN line.
When the computer is a computer that performs communication by dial-up connection to a P / IP network, the originating computer uses the ISDN line to transmit the T
The destination computer is notified of an identifier indicating that the establishment of a communication path via the CP / IP network is requested, and the destination computer obtains the identifier, and
A dial-up connection is made to a provider, which is a connection point to the TCP / IP network, using an unused channel out of an information channel or a control channel of the SDN line, and an IP address given by the provider is transmitted to the originating computer. From the same channel that has received the identifier from the destination computer, and the source computer establishes a communication path with the destination computer using the IP address notified from the destination computer. ISDN characterized by
A method for establishing a communication path between computers using a line. 6. The communication path between computers using an ISDN line according to claim 5, wherein the originating computer uses the control channel (D channel) of the ISDN line when notifying the destination computer of the identifier. How to establish. 7. The communication path between computers using an ISDN line according to claim 5, wherein the information transmission terminal uses the information channel (B channel) of the ISDN line when the calling computer notifies the destination computer of the identifier. How to establish. 8. The computer according to claim 5, wherein the destination computer uses an unused channel among the information channel and the control channel of the ISDN line when dialing up the provider. Communication path establishment method. 9. A communication path establishment system comprising two computers connected directly to a TCP / IP network or via a provider, wherein the TCP / IP network is dial-up connected to the provider via an ISDN line. Has an ISDN line and a computer connected to the
When the calling computer, which is a computer that can be connected to the computer whose IP address is known, is a computer that performs communication by dial-up connection to a TCP / IP network via the ISDN line, the calling computer is: ISDN line number input means for inputting the number of the ISDN line to be accommodated, transmitting means for transmitting to the called computer using the ISDN line, and receiving a response from the called computer,
Communication path establishment request notifying means for notifying the destination computer of a communication path establishment request via an IP network; and establishing a communication path with the destination computer based on the address information notified from the destination computer. The destination computer, based on the communication path establishment request obtained from the originating computer, making a dial-up connection to a provider that is a connection point to the TCP / IP network. A communication path establishing system between computers using an ISDN line, comprising: connecting means; and an IP address notifying means for notifying the originating computer of an IP address given by the provider. 10. A communication path establishing system comprising two computers connected directly to a TCP / IP network or via a provider, wherein the TCP / IP network is dial-up connected to the provider via an ISDN line. And a TCP / IP connection via a dedicated line
When the calling computer is a computer connected to a network, the calling computer sends a request for establishing a communication path via the TCP / IP network to the called computer using an ISDN line. A communication path establishment request notifying means for notifying the computer, and a communication path establishing means for establishing a communication path with the destination computer based on the address information notified from the destination computer; The computer includes: provider connection means for dial-up connection to a provider which is a connection point to a TCP / IP network based on the communication path establishment request acquired from the caller computer; and an IP address given by the provider. Having IP address notifying means for notifying the calling side computer Communication path establishment system between computers using the ISDN line, characterized. 11. A computer-to-computer using an ISDN line according to claim 9, wherein said communication path establishment request notifying means has means for notifying a request identifier to said destination computer as said communication path establishment request. Communication channel establishment system. 12. The D-channel communication using a control channel (D channel) of the ISDN line when the originating computer notifies the destination computer of the communication channel establishment request. The system for establishing a communication path between computers using an ISDN line according to claim 9 or 10, further comprising means. 13. The B-channel communication using the information channel (B channel) of the ISDN line when the originating computer notifies the destination computer of the communication channel establishment request. The system for establishing a communication path between computers using an ISDN line according to claim 9 or 10, further comprising means. 14. The ISDN line according to claim 9, wherein said provider connection unit of said destination computer includes a connection unit using an unused channel among said information channel or control channel of said ISDN line. A communication path establishment system between computers. 15. The ISDN line according to claim 9, wherein said IP address notification means of said destination computer includes means for notifying said source computer on said same channel that received said identifier from said source computer. Communication path establishment system between computers used. 16. A storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider, comprising: A destination computer which is a computer connected to a TCP / IP network by dial-up connection with the provider, and an ISDN line,
When the calling computer, which is a computer that can be connected to the computer whose IP address is known, is a computer that performs communication by dial-up connection to a TCP / IP network via the ISDN line, the calling computer is installed in the calling computer. An ISDN line number input process for inputting the number of an ISDN line accommodated by the receiving computer; a transmitting process for transmitting to the receiving computer using the ISDN line; /
A communication path establishment request notification process for notifying the destination computer of a communication path establishment request via an IP network; and establishing a communication path with the destination computer based on the address information notified from the destination computer. ISDN having a communication path establishing process
A storage medium storing a program for establishing a communication path between computers using a line. 17. A storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider, comprising: A destination computer which is a computer connected to a TCP / IP network by dial-up connection with the provider, and an ISDN line,
When the originating computer, which is a computer that can be connected to the computer whose IP address is known, is a computer that performs communication by dial-up connection to a TCP / IP network via the ISDN line, A provider connection process for dial-up connection to a provider, which is a connection point to the TCP / IP network, based on the communication path establishment request acquired from a calling computer, and an IP address given by the provider, A storage medium storing a program for establishing a communication path between computers using an ISDN line, comprising an IP address notification process for notifying the computer. 18. A storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider, comprising: A destination computer, which is a computer that connects to the TCP / IP network by dial-up connection with the provider, and a TCP / IP through a dedicated line
When a calling computer is a computer connected to a network, a request for establishing a communication path via the TCP / IP network using an ISDN line is sent to the called computer installed on the calling computer. A communication path establishment request notification process for notifying the destination computer, and a communication path establishment process for establishing a communication path with the destination computer based on the address information notified from the destination computer. Characteristic ISDN
A storage medium storing a program for establishing a communication path between computers using a line. 19. A storage medium storing a program for establishing a communication path between computers using an ISDN line composed of two computers connected directly to a TCP / IP network or via a provider, comprising: A destination computer, which is a computer that connects to the TCP / IP network by dial-up connection with the provider, and a TCP / IP through a dedicated line
When it is composed of an originating computer that is a computer connected to a network, it is a connection point to a TCP / IP network that is installed on the destination computer and that is based on the communication path establishment request obtained from the originating computer. A communication path between computers using an ISDN line, comprising: a provider connection process for dial-up connection with a provider; and an IP address notification process for notifying the originating computer of an IP address given by the provider. A storage medium that stores an establishment program. 20. The communication channel establishment request notification process includes a process of notifying an identifier of a request to the destination computer as the communication channel establishment request.
20. A storage medium storing a program for establishing a communication path between computers using an ISDN line according to 6 or 18. 21. The communication path establishment request notifying process includes a step of controlling the originating computer to use the control channel (D channel) of the ISDN line when notifying the destination computer of the communication path establishment request. 19. A storage medium storing a program for establishing a communication path between computers using an ISDN line according to claim 16 or 19, comprising a D channel communication control process. 22. The communication channel establishment request notifying process controls the information transmission channel (B channel) of the ISDN line when the originating computer notifies the destination computer of the communication channel establishment request. 19. A storage medium storing a program for establishing a communication path between computers using an ISDN line according to claim 16, which includes a B-channel communication control process. 23. The provider connection process installed on the destination computer includes a connection control process for controlling use of an unused information channel or control channel of the ISDN line. ISD described
A storage medium storing a program for establishing a communication path between computers using N lines. 24. The IP address notification process installed on the destination computer includes a process of controlling to notify the source computer on the same channel that received the identifier from the source computer. 20. A storage medium storing a program for establishing a communication path between computers using an ISDN line according to claim 19.