JP2006245864A - Network switching apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a network switching apparatus that easily carries out connection in an IP network without the need for revising existing master apparatuses for executing connection by a general subscriber telephone network and a system of telephone sets connected to the master apparatuses. <P>SOLUTION: The network switching apparatus 1A is provided between the master unit 2A and networks 4, 5, and the network switching apparatus 1B is provided between the master unit 2B and the networks 4, 5. Each of the network switching apparatuses 1A, 1B is provided with a cross-reference telephone number table for cross-referencing first telephone numbers in the general subscriber telephone network with second telephone numbers in the IP network. When the telephone number included in a connection request is the first telephone number in the general subscriber telephone network, the network switching apparatus 1A references the cross-referenced second telephone number from the cross-reference telephone number table and transmits the connection request including the second telephone number to the IP network 5. The network switching apparatus 1B receives an incoming call request from the IP network 5, reads the first telephone number corresponding to the second telephone number by referencing the cross-reference telephone number table, and transmits the incoming call request including the first telephone number to a telephone set 3B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a network switching device capable of making a call by switching between a general subscriber telephone network and an IP network.

  2. Description of the Related Art Conventionally, a so-called IP telephone system that converts a voice signal into a digital signal and transmits and receives it as an IP packet has been developed and spread.

  VoIP (Voice over IP) technology is used to transmit voice using an IP network or a protocol used on the Internet including the IP network (see Patent Document 1 and Patent Document 2).

  By connecting the ISDN adapter for VoIP to the VoIP adapter, the system of Patent Document 1 can easily construct a VoIP system that connects to the ISDN network based on adapter information including each other's IP address transmitted and received by the ISDN network. It is a thing.

In the system of Patent Document 2, a telephone is connected to an IP network via an adapter that performs switching connection between a general subscriber telephone network and an IP network according to an identification signal, and is connected to the IP network via the adapter. A phone call can be made.
JP 2004-7550 A JP 2003-264644 A

  However, in a system that can selectively make a call using the general subscriber telephone network and a telephone call using the IP network, especially in a telephone system for enterprises, it is possible to connect not only an IP phone but also a general subscriber telephone network. Therefore, the following problems occur.

  (1) Telephone equipment in a company generally has a main unit (PBX) installed, and dial-in is set by a normal telephone number in a general subscriber telephone network. Therefore, when making a call or receiving a call with an IP phone number (usually a multi-digit number beginning with “050”), it is necessary to additionally set a phone number for the IP phone for the main device.

  (2) For example, an abbreviated number is usually set for a telephone number in the same company such as between a head office and a branch office or between a branch office and a branch office. In such a case, since the telephone number of the general subscriber telephone network and the abbreviated number are set in the main unit in association with each other, an IP telephone is newly introduced for such a telephone system already constructed. In this case, a new IP telephone number must be set in the main unit separately from the telephone number of the general subscriber telephone network.

  (3) After the introduction of the IP telephone, both the connection through the general subscriber telephone network and the connection through the IP network are used together. Therefore, even when making a call to the same destination, until now (telephone number in the general subscriber telephone network) Since different telephone numbers (telephone numbers in the IP network) are called, it is difficult to operate from the connection by the general subscriber telephone network to the connection by the IP network.

  (4) A telephone number in the IP network (telephone number for connection via the IP network) is newly set. However, when the main device memory is full, additional setting may be impossible. .

  (5) In order to add an IP telephone function to a conventional main unit (PBX) using a general subscriber telephone network, an IP telephone terminal is provided between the main unit and the network (general subscriber telephone network / IP network). If the IP telephone terminal additional construction contractor and the main apparatus installation contractor are different, the IP telephone terminal additional construction contractor may not be able to change the setting of the main apparatus. This is because the main device for a company is usually a lease property, and its commercial right is on the side of the main device installer. Therefore, the setting change of the main device is entrusted to the construction contractor, but there is a problem that it is difficult to adjust the work schedule and that a new cost is required for changing the setting.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an existing main apparatus for connecting via a general subscriber telephone network and a network switching apparatus that solves the above-mentioned problems without changing the telephone system connected thereto. is there.

In order to solve the above problems, the network switching device of the present invention is configured as follows.
(1) Corresponding telephone number storage means for storing the first telephone number in the general subscriber telephone network and the second telephone number in the IP network in association with each other;
A connection request receiving means for receiving a connection request including a telephone number of the connection destination;
The type of the telephone number of the connection destination included in the connection request received by the connection request receiving means is the first telephone number, and the second telephone associated with the first telephone number If the number is not stored in the corresponding telephone number storage means, the general subscriber telephone network connection request sending means for sending the connection request including the first telephone number accepted by the connection request accepting means to the general subscriber telephone network When,
The type of the telephone number of the connection destination included in the connection request received by the connection request receiving means is the first telephone number, and the second telephone number corresponding to the first telephone number is the And an IP network connection request sending means for sending a connection request including the second telephone number to the IP network when stored in the corresponding telephone number storage means.

  (2) The IP network connection request sending means, for example, if the type of the connection destination telephone number included in the connection request received by the connection request receiving means is the second telephone number, the connection request The connection request received by the receiving means is sent to the IP network.

(3) Corresponding telephone number storage means for storing the first telephone number in the general subscriber telephone network and the second telephone number in the IP network in association with each other;
An incoming request accepting means for accepting an incoming request sent from the general subscriber telephone network or the IP network;
The incoming request reception means accepts an incoming request sent from the IP network, and a first telephone number associated with a second telephone number included in the incoming request is stored in the corresponding telephone number storage. And an incoming request sending means for sending an incoming request including the first telephone number to the telephone side when stored in the means.

  (4) The incoming request sending means is sent, for example, when the incoming request acceptance means accepts an incoming request sent from the general subscriber telephone network or from the IP network accepted by the incoming request acceptance means. If the first telephone number associated with the second telephone number included in the incoming request is not stored in the corresponding telephone number storage means, the incoming request accepted by the incoming request acceptance means is Send to the side.

According to the present invention, the following effects can be obtained.
(1) The connection request accepting unit accepts a connection request including a connection destination telephone number, and the second telephone number associated with the first telephone number is the telephone number included in the connection request. Is stored in the corresponding telephone number storage means, a connection request including the second telephone number is sent to the IP network, which is a connection request with the first telephone number in the general subscriber telephone network. Nevertheless, the connection with the IP network is automatically made. As a result, it is possible to connect to the other party using the existing main apparatus or telephone for connection through the general subscriber telephone network as it is.

  (2) If the type of the telephone number of the connection destination included in the connection request is the second telephone number, the connection request is sent to the IP network, so connection with the intended IP network is possible. It becomes.

  (3) The incoming call request accepting unit accepts an incoming call request sent from the IP network, and the first telephone number associated with the second telephone number included in the incoming call request is stored as a corresponding telephone number. When stored in the means, the incoming call request including the first telephone number is sent to the telephone side, so that the caller information can be grasped on the telephone side.

  (4) When the incoming request acceptance unit accepts an incoming request sent from the general subscriber telephone network, or a first telephone number associated with the second telephone number included in the incoming request from the IP network When the telephone number is not stored in the corresponding telephone number storage means, the incoming call request is sent to the telephone side, so that the incoming call from the general subscriber telephone network is possible as before.

A telephone system according to a first embodiment provided with the network switching device of the present invention will be described with reference to FIGS.
FIG. 1 is a block diagram showing the configuration of the telephone system. In FIG. 1, main devices 2A and 2B are so-called PBXs which perform connection in a general subscriber telephone network and exchange of extension lines. A plurality of telephones 3A and 3B are connected to the main devices 2A and 2B, respectively.

  In FIG. 1, network switching devices 1A and 1B are devices according to the present invention, and are connected to main devices 2A and 2B through a U-point interface. In addition, the general subscriber telephone network 4 is connected to use an ISDN line. Further, the IP network 5 is connected by PPPoE or PPP via a built-in modem.

  FIG. 2 is a corresponding telephone number table corresponding to the corresponding telephone number storage means according to the present invention, which is provided in the network switching devices 1A and 1B shown in FIG. This table is used for conversion between a telephone number in the general subscriber telephone network and a telephone number in the IP network when making a call from the main devices 2A and 2B to the network side.

FIG. 3 is a flowchart showing the processing contents of the network switching devices 1A and 1B.
First, the processing procedure of the network switching device 1A when there is a connection request from the main device 2A side will be described.

  First, for example, when an abbreviated dial is input from the telephone 3A, a table showing the correspondence between the abbreviated number already registered in the main unit 2A and the telephone number (first telephone number) in the general subscriber telephone network Then, a connection request including the first telephone number is sent to the network switching device 1A. When the telephone number (first telephone number) in the general subscriber telephone network or the telephone number (second telephone number) in the IP telephone network is directly input from the telephone 3A, a connection request including the telephone number is sent to the network. It is sent to the switching device 1A.

  Thus, if there is a connection request (input of a signal including a telephone number) from the main device 2A side, the type of the telephone number is the first telephone number in the general subscriber telephone network, or the second telephone in the IP network. Whether it is a number or not is determined (S1 → S2). If the telephone number is the first telephone number, the second telephone number stored in association with the first telephone number is referred with reference to the table shown in FIG. 2 (S3). For example, as shown in FIG. 2, if the connection request includes the first telephone number 03xxxxxxxx57, it is the second telephone number (IP network side telephone number) associated with the first telephone number. Read 050xxxx12. Then, a connection request including the second telephone number is sent (transmitted) to the IP network 5 (S5).

  If the second telephone number corresponding to the first telephone number is not written in the table shown in FIG. 2, a connection request including the first telephone number is sent to the general subscriber telephone network 4 as it is (transmission). (S6).

  If the connection request from the main device 2A is a connection request including the second telephone number, the connection request is sent to the IP network 5 as it is (S2 → S5).

  Next, the processing procedure of the network switching device 1B when the network switching device 1B has an incoming request from the network will be described.

  When the network switching device 1B receives an incoming call request from the general subscriber telephone network 4 or the IP network 5, processing corresponding to the type of the network is performed (S7 → S8). If the request is an incoming call from the IP network 5, the table shown in FIG. 2 is referred to, and the first telephone number corresponding to the second telephone number included in the incoming call request is referred to (S9). If the first telephone number is stored, an incoming signal including the first telephone number is sent to main apparatus 2B (S10 → S11). As a result, the main apparatus 2B operates in the same manner as when there is an incoming call request from the general subscriber telephone network 4. Therefore, referring to the table of correspondence between the telephone number (first telephone number) in the general subscriber telephone network and the caller already registered in the main device 2B, the caller name is displayed on the display unit of the telephone 3B. To display.

  If the second telephone number is not registered in the table, an incoming signal including the second telephone number is sent to the main apparatus 2B (S12). In this case, the second telephone number is displayed as it is on the display unit of the telephone 3B.

  If there is an input that is neither a connection request nor an incoming call request, processing corresponding to the input is performed (S13).

  As described above, the function of the IP telephone can be obtained by simply inserting the network switching devices 1A and 1B without changing the configuration of the main devices 2A and 2B and the telephones 3A and 3B corresponding to the general subscriber telephone network used conventionally. Can be added.

Next, a telephone system according to a second embodiment will be described with reference to FIG.
In this example, the telephones 3A and 3B are directly connected to the network switching devices 1A and 1B without using the main devices 2A and 2B shown in FIG. The telephones 3A and 3B have a speed dial function and a function for storing the correspondence between the telephone number and the caller name. The configuration of the network switching devices 1A and 1B is the same as that shown in FIG.

The operation of the telephone system shown in FIG. 4 is as follows.
First, when a speed dial is performed from the telephone 3A, the telephone 3A sends a connection request including a telephone number corresponding to the speed dial to the network switching device 1A.

  If the telephone number included in the connection request is the first telephone number in the general subscriber telephone network, the network switching device 1A selects the corresponding second telephone number from the same table as shown in FIG. If the second telephone number is registered, a connection request including the second telephone number is sent to the IP network 5.

  The network switching device 1B receives the incoming call request from the IP network 5, reads the first telephone number corresponding to the second telephone number by referring to the table provided in the network switching device 1B, and the first telephone number If there is, an incoming call request including the first telephone number is sent to the telephone 3B.

  If the second telephone number is not registered in the table of the network switching device 1B, the network switching device 1A sends a connection request including the first telephone number to the general subscriber telephone network 4. The network switching device 1B receives an incoming request from the general subscriber telephone network 4 and sends an incoming request including the first telephone number to the telephone 3B.

As a result, the telephone 3B refers to the caller name registered corresponding to the first telephone number, displays it on the display unit, and emits a ringing tone.
Thereafter, when the user of the telephone 3B goes off-hook, the call starts.

  In this way, a caller that can use a telephone number in the IP network and a callee can make a call through the IP network by the same flow as a call connection through the general subscriber telephone network. .

It is a block diagram which shows the structure of the telephone system which concerns on 1st Embodiment. It is a figure which shows the example of the corresponding | compatible telephone number table with which the network switching apparatus used with the same telephone system is provided. It is a flowchart which shows the processing content of the network switching apparatus. It is a block diagram which shows the structure of the telephone system which concerns on 2nd Embodiment.

Explanation of symbols

1A, 1B-Network switching device 2A, 2B-Main device 3A, 3B-Telephone 4-General subscriber telephone network 5-IP network

Claims (4)

Corresponding telephone number storage means for storing the first telephone number in the general subscriber telephone network and the second telephone number in the IP network in association with each other;
A connection request receiving means for receiving a connection request including a telephone number of the connection destination;
The type of the telephone number of the connection destination included in the connection request received by the connection request receiving means is the first telephone number, and the second telephone associated with the first telephone number If the number is not stored in the corresponding telephone number storage means, the general subscriber telephone network connection request sending means for sending the connection request including the first telephone number accepted by the connection request accepting means to the general subscriber telephone network When,
The type of the telephone number of the connection destination included in the connection request received by the connection request receiving means is the first telephone number, and the second telephone number corresponding to the first telephone number is the An IP network connection request sending means for sending a connection request including the second telephone number to the IP network, if stored in the corresponding telephone number storage means;
Network switching device with   The IP network connection request sending means accepts the connection request accepting means if the type of the telephone number of the connection destination included in the connection request accepted by the connection request accepting means is the second telephone number. 2. The network switching device according to claim 1, wherein the connection request is transmitted to the IP network. Corresponding telephone number storage means for storing the first telephone number in the general subscriber telephone network and the second telephone number in the IP network in association with each other;
An incoming request accepting means for accepting an incoming request sent from the general subscriber telephone network or the IP network;
The incoming request reception means accepts an incoming request sent from the IP network, and a first telephone number associated with a second telephone number included in the incoming request is stored in the corresponding telephone number storage. An incoming request sending means for sending an incoming request containing the first telephone number to the telephone side if stored in the means;
Network switching device with   The incoming request sending means is configured to accept an incoming request sent from the IP network accepted by the incoming request accepting means when the incoming request accepting means accepts an incoming request sent from the general subscriber telephone network. When the first telephone number associated with the included second telephone number is not stored in the corresponding telephone number storage unit, the incoming request accepted by the incoming request acceptance unit is sent to the telephone side. The network switching device according to claim 3.

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