JP2001292233A - Internet communication system and gateway device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize an additional service on the Internet such as grasping of call origination from another subscriber who is not connected to the Internet or service start even during an Internet service connection. SOLUTION: When the other subscriber tries to call a subscriber (a) during the Internet service connection, a line exchange node (b) which receives a call from the other subscriber requests the transfer of the call from the other subscriber to a gateway device (c). The gateway device (c) performs signal conversion and media conversion, acquires the IP address of an Internet server on the basis of the telephone number of the subscriber (a) and instructs to an Internet server (d) an incoming call notice to which the IP address of the subscriber (a) is set. By using an Internet protocol, the Internet server (d) reports the presence of incoming notice from another subscriber to the subscriber (a).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Internet communication system and a gateway device, and more particularly to an Internet communication system and a gateway device using an Internet service using a circuit switching network.

[0002]

2. Description of the Related Art Conventionally, when providing Internet services, it is known that an Internet server performs signal conversion and media conversion between a circuit switching network and the Internet network. Regarding the incoming call notification, the circuit switching node accommodating the communicating subscriber performs the incoming call notification without using the information channel, stores the data of the incoming call notification, and the circuit switching node disconnects or disconnects the connection. rear,
It is known to periodically notify subscribers of incoming call notification data (Telecommunications Association, Technical Reference Material INS)
Internet Service Interface Volume 4 (Layer 3 Circuit Switching Additional Service), Fifth Edition, p. 25).

[0003]

However, in the above-mentioned Internet service, communication such as telephone to a subscriber connected to the Internet becomes busy due to an increase in the average call holding time, and connection is not possible. Tend to increase.

[0004] In view of the above, the present invention utilizes additional services from the Internet, such as grasping a call from another subscriber who is not connected to the Internet or starting a service while the Internet service is being connected. It is an object of the present invention to provide an Internet communication system and a gateway device capable of performing the above.

[0005]

According to a first aspect of the present invention, there is provided a circuit switching node accommodating a subscriber who uses a telephone service and an Internet service through a dial-up connection, and a circuit switching node including the circuit switching node. An internet communication system comprising: a gateway device that performs signal conversion and media conversion between a network and the Internet network; and an Internet server that connects to the gateway device and establishes an Internet service. When the accommodated second subscriber attempts to activate the service for the first subscriber connected to the Internet network, the circuit switching node sends the first subscriber's information to the gateway device. Transferring a call including telephone number information, wherein the gateway device performs a circuit switching protocol Luo Internet Protocol (I
P), a signal conversion and a media conversion are performed, and a correspondence table of the telephone number of the first subscriber, the IP address corresponding to the first subscriber and the IP address of the Internet server is searched, and the IP address of the connected Internet server is searched. Determining an address and forwarding a call including IP address information corresponding to a first subscriber to an Internet server, wherein the Internet server is connected to an Internet service based on the IP address of the first subscriber. First
An Internet communication system is provided, which identifies a subscriber of the second subscriber and notifies the first subscriber that the service is to be activated by the second subscriber via the connected Internet. I do.

According to a second solution of the present invention, a circuit switching node accommodating a subscriber who uses a telephone service and an Internet service through a dial-up connection,
A gateway device in an Internet communication system, comprising: a gateway device for performing signal conversion and media conversion between a circuit switching network including the circuit switching node and the Internet network; and an Internet server connected to the gateway device to establish an Internet service. Wherein the gateway device includes a subscriber telephone number, an IP address, and an IP address of the Internet server.
A telephone number IP address correspondence table storing addresses, receiving a call including telephone number information of a first subscriber based on a contract data table from the circuit switching node, and setting the telephone number IP address correspondence table Then, based on the telephone number IP address correspondence table, the first
Obtains an IP address of the Internet server corresponding to the telephone number of the subscriber, and transmits data for establishing a link to the Internet server corresponding to the IP address; Subscriber,
When trying to activate a service for a first subscriber connected to the Internet network, the circuit switching node indicates that the first subscriber is connected to the Internet and the telephone number of the first subscriber. Is received, and by searching the telephone number IP address correspondence table, the IP address of the Internet server to which the first subscriber is connected is specified,
I corresponding to the first subscriber to the Internet server
Provided is a gateway device, which transmits a call including P address information and issues an incoming call notification instruction.

In the present invention, in particular, when another call attempts to activate a service for a subscriber connected to the Internet service, when the circuit switching node detects that the subscriber is busy, the subscriber's line is detected. In addition to determining the contract status at the switching node, if you are an Internet transfer contractor,
A circuit switching signal in which the telephone number of the subscriber is set is transmitted to the gateway device.

[0008] The gateway device performs signal conversion and media conversion of the circuit-switched signal from the circuit-switched protocol to the Internet protocol, indexes the IP address correspondence table using the telephone number of the subscriber on the circuit-switched signal, IP address and Internet server I
The P address is specified, and the call is forwarded to the Internet server.

The Internet server identifies the connected subscriber from the IP address of the subscriber, and informs the Internet service via the connected Internet that a service such as an IP telephone or data transmission will be activated for the subscriber. While notifying the subscriber. As a result, an incoming call notification service can be provided without affecting a call being communicated through the Internet connection.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram of an Internet communication system according to the present invention.

This system includes, for example, a circuit switching network N,
An internet network M and a gateway device c are provided.
The circuit switching network N includes subscribers a and j and circuit switching nodes b, which are exchanges for providing circuit switching services and the like to the subscribers.
i. Further, the circuit switching nodes b and j have a contract data table f and the like. Further, the Internet network M is connected to the gateway device c by IP, and an Internet server d that provides an Internet service to an Internet service provider. Has a storage device e for returning stored data. Further, the Internet server d has a subscriber server IP address correspondence table h. The gateway device c performs signal conversion and media conversion between the circuit switching network N and the Internet network M, and selects and specifies an IP address. Further, the gateway device c has a telephone number IP address correspondence table g. Further, the gateway device c may be included in either the circuit switching network N or the Internet network M.

FIG. 2 is an explanatory diagram of the contract data table f stored in the circuit switching node b in advance. As shown, the contract data table f includes, for example, a subscriber a
, Corresponding Internet access contract display and contract Internet service provider information are held in advance. The same applies to other subscribers. The Internet access contract display is contract data that can determine whether the subscriber a is the same as the Internet access contractor. Similarly, the contracted Internet service provider information is contract data that can specify the connection destination of the Internet service provider contracting the Internet access contract display.

FIG. 3 is an explanatory diagram of a telephone number IP address correspondence table g stored in the gateway device c in advance. As shown in the figure, the telephone number IP address correspondence table g stores telephone numbers (telephone numbers of the subscriber a), corresponding IP addresses, and I of the Internet server d.
The P address is held in advance.

FIG. 4 is an explanatory diagram of a subscriber server IP address correspondence table h held in the Internet server d in advance. As shown in the figure, in the subscriber server IP address correspondence table h, the IP address of the subscriber (for example, the IP address of the subscriber a) and the IP address of the Internet server d corresponding thereto are stored in advance.

Next, the operation of this embodiment will be described in detail. FIG. 5 is a sequence diagram showing a communication procedure of the Internet communication system according to the present invention. FIG.
6 is a flowchart of the processing of the gateway device (that is, FIG. 6 is a flowchart of a part of the communication procedure of FIG. 5, and in the following description, a part of the communication procedure of FIG. Step corresponds to). Here, as an example, a case will be described in which another call utilizes the Internet to a subscriber connected to the Internet, notifies the subscriber of an incoming call, and performs a telephone call using an IP telephone.

When the subscriber a wants to receive the Internet service, the contract data is set in the contract data table f in the circuit switching node b in advance, and a call is made to the circuit switching network N (step 1). Connect to switching node b.
The circuit switching node b determines the subscriber a based on the contract data table f storing the Internet access contract display and the contract Internet service provider information described above.
Is transmitted to the gateway device c to connect the call (step 2).

The gateway device c performs signal conversion and media conversion from the circuit switching protocol to the Internet protocol, and performs the following processing on the telephone number of the subscriber a.
By dynamically assigning an IP address, the IP address of the Internet server is associated. Further, the gateway device c obtains the IP address of the Internet server d of the connection destination corresponding to the telephone number of the subscriber a by setting the telephone number IP address correspondence table g, and stores the IP address of the subscriber a in the IP address. A link is established with the corresponding Internet server d (step 3).
The Internet server d associates the IP address of the subscriber a with the IP address of the Internet server d, sets the subscriber server IP address correspondence table h, and activates the Internet service. Since the gateway device c has obtained the IP address of the connection destination Internet server d corresponding to the telephone number of the subscriber a, the circuit switching node b recognizes that the subscriber a is connected to the Internet service. I do. Alternatively, information for determining whether or not the subscriber a is connected to the Internet service may be stored in the contract data table f in advance, and a flag may be set based on this information.

It is assumed that a call is made from the subscriber j to the subscriber a during the connection to the Internet service, via the circuit switching node i without or through the circuit switching node i (step 4).
Since the call from the subscriber j is going to be received by the subscriber a, the call is received by the circuit switching node b (step 5). The circuit switching node b detects that the subscriber a is busy and, based on the telephone number of the subscriber a,
Reference is made to the Internet access contract display in the contract data table f of the subscriber a. If it is determined that subscriber a has a contract with the Internet, circuit-switched node b
Sends a transfer request including that the subscriber a is connected to the Internet and that the telephone number of the subscriber a has been set (step 6). Further, in response to the transfer request, the circuit switching node b transfers the call from the subscriber j to the gateway device c corresponding to the contracted Internet service provider information.

The gateway device c is connected to the circuit switching node b
In order to determine the Internet connection destination corresponding to the call from the subscriber j transferred from the subscriber a, the telephone number IP address correspondence table g is indexed based on the telephone number of the subscriber a (step 6 in FIG. 6). 1) It is determined whether there is an IP address of the subscriber a (step 6-2 in FIG. 6).
Further, the gateway device c acquires the IP address of the Internet server d by indexing the telephone number IP address correspondence table g.

If there is an IP address of the subscriber a, the gateway device c issues an incoming notification instruction to the Internet server d in which the IP address of the subscriber a is set (step 7). It should be noted that the process of the gateway device c is performed before the subscriber a connects to the Internet in preparation for a new call from the subscriber j or another subscriber after the incoming call notification instruction (steps 2 and 3 in FIG. 6). ) Or later (between step 3 and step 6 in FIG. 6). If the IP address of the subscriber a is not present, the gateway device c is connected to the circuit switching node b.
Refuse to transfer the call from the subscriber j transferred from the Internet server d to the Internet server d (step 7-1 in FIG. 6).

When the IP address of the subscriber a notified from the gateway device c is in the subscriber server IP address correspondence table h, the Internet server d sends the subscriber a connected to the Internet from the subscriber j. It is determined that there is an incoming call. Also, the Internet server d uses the Internet protocol,
The call from the subscriber j is handled as data on the Internet and mixing is performed. Further, the Internet server d notifies the subscriber a of the incoming call as a data transmission on the Internet with the call from the subscriber j (step 8). Note that, when the Internet server d notifies the subscriber a connected to the Internet of an incoming call, the incoming notification is made by an Internet screen display using various application software, an Internet mail including an image or a document or a voice, and an Internet telephone. It may be performed.

According to the incoming call notification from the Internet server d, the subscriber a communicates with the subscriber j by an IP telephone or the like while the Internet service is being connected, for example, by operating a screen such as a keyboard operation or a mouse operation on a computer. It can communicate and talk.

[0023]

According to the present invention, as described above, while the subscriber is connected to the Internet service,
Additional services from the Internet can be used, such as grasping a call from another subscriber who is not connected to the Internet or starting a service.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an Internet communication system according to the present invention.

FIG. 2 is an explanatory diagram of a contract data table f held in a circuit switching node b in advance.

FIG. 3 is an explanatory diagram of a telephone number IP address correspondence table g stored in a gateway device c in advance.

FIG. 4 is an explanatory diagram of a subscriber server IP address correspondence table h held in the Internet server d in advance.

FIG. 5 is a sequence diagram showing a communication procedure of the Internet communication system according to the present invention.

FIG. 6 is a flowchart of processing of the gateway device.

[Explanation of symbols]

 a, j subscriber b, i circuit switching node c gateway device d internet server e storage device f contract data table g telephone number IP address correspondence table h subscriber server IP address correspondence table N circuit switching network M internet network

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 11/00 303 H04L 11/20 102A 9A001 (72) Inventor Takeshi Ken Baba 216 Totsukacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture, Japan. Address Co., Ltd.Communications Division, Hitachi, Ltd. Address: Hitachi, Ltd., Communications Division (72) Inventor Naoki Naraoka 180, Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside Hitachi Communication Systems Co., Ltd. (72) Inventor Kazuaki Miyawaki 180, Totsuka-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture (72) Inventor Shinji Fukuda Totsuka, Totsuka-ku, Yokohama-shi, Kanagawa 180 address Hitachi Communication Systems Co., Ltd. F-term (reference) 5K101 NN21 PP03 TT06 UU19 9A001 CC06 CC07 HH34 JJ18 JJ25 JJ27 KK56 LL09

Claims (6)

[Claims] 1. A circuit switching node for accommodating a subscriber using a telephone service and an Internet service by dial-up connection, and a signal conversion and a media conversion between a circuit switching network including the circuit switching node and the Internet network. An Internet communication system comprising: a gateway device for performing the communication; and an Internet server connected to the gateway device for establishing an Internet service, wherein a second subscriber accommodated in the circuit switching node includes:
When starting a service for a first subscriber connected to the Internet network, the circuit switching node transfers a call including telephone number information of the first subscriber to a gateway device, The gateway device performs signal conversion and media conversion from the circuit switching protocol to the Internet protocol (IP), and converts the telephone number of the first subscriber and the IP corresponding to the first subscriber.
Searching a correspondence table of the address and the IP address of the Internet server, specifying the IP address of the connected Internet server, and transferring the call including the IP address information corresponding to the first subscriber to the Internet server; The server identifies a first subscriber connected to the Internet service based on the first subscriber's IP address and, for the first subscriber, a second subscriber.
An internet communication system in which the subscriber of the Internet notifies that the service is going to be activated via the connected internet. 2. The Internet server, when notifying a first subscriber that a service has been activated from a second subscriber, informs that there is an incoming call to the first subscriber during connection. 2. The Internet communication system according to claim 1, wherein the information is displayed on an Internet terminal of the first subscriber by using an Internet protocol via an Internet service. 3. When the gateway device notifies a first subscriber connected to the Internet of an incoming call,
Transferring a call to the Internet server connected to the first subscriber, wherein the Internet server stores the data of the incoming call service for the connected first subscriber in a storage device, and the data is predetermined. A request to release the incoming call when it is determined that the stored value is equal to or greater than the stored value, and notify the first subscriber of the stored data during connection, disconnection, or reconnection after disconnection. Item 3. The internet communication system according to item 1 or 2. 4. The Internet server, when notifying an incoming call to a subscriber connected to the Internet, receiving an incoming call by an Internet screen display using various application software, an Internet mail including an image or a document or voice, and an Internet telephone. 4. The Internet communication system according to claim 1, wherein the notification is performed. 5. The circuit switching node according to claim 1, wherein said circuit switching node comprises a contract data table storing subscriber, Internet access contract display and contract Internet service provider information. Internet communication system. 6. A signal conversion and media conversion between a circuit switching node accommodating a subscriber using a telephone service and an Internet service by dial-up connection, and a circuit switching network including the circuit switching node and the Internet network. A gateway device in an Internet communication system comprising a gateway device and an Internet server connected to the gateway device to establish an Internet service, wherein the gateway device has a telephone number, an IP address and an IP address of a subscriber. A telephone number IP address correspondence table storing addresses, receiving a call from the circuit switching node including telephone number information of a first subscriber based on a contract data table, and setting the telephone number IP address correspondence table I On the basis of the telephone number IP address correspondence table, an IP address of the connection destination Internet server corresponding to the telephone number of the first subscriber is acquired, and a link of the Internet server corresponding to this IP address is obtained. The circuit switching node transmits data for establishing, and when the second subscriber attempts to activate a service to the first subscriber connected to the Internet network, the first subscription is transmitted from the circuit switching node. Receiving the transfer request including that the user is connected to the Internet and setting the telephone number of the first subscriber, and searching the telephone number IP address correspondence table, the first subscriber is connected. IP address information corresponding to a first subscriber to the Internet server while specifying the IP address of the Internet server A gateway device that transmits a call including the following and issues an incoming call notification instruction.