JP5303308B2 - IP phone location information identification method - Google Patents

Description

  The present invention relates to a method for specifying location information of an IP phone in order to restrict the use of the IP phone assigned an 0-ABJ number outside the area.

  A telephone number starting with “050” is assigned to an IP telephone, but there is a desire to use a fixed telephone without changing the telephone number even if the fixed telephone is switched to an IP telephone. It is possible to use “0AB to J number” that starts with “etc.” as it is.

  "0AB-J number" is a numbering system fixed for each region based on the requirements stipulated in Article 9, Paragraph 1, Item 1 of the Telecommunications Number Regulations, and associates the calling party telephone number with the calling location. Therefore, it is necessary to regulate the use of “0AB to J number” from outside the area. However, there is a problem that IP telephones can be used from anywhere as long as there is a network environment that can be connected to a server. Therefore, the telecommunications carrier may take technical measures to prevent the use of a telecommunications number different from the geographical identification indicated by the telecommunications number defined in Article 9, Paragraph 1, Item 1 of the Regulation. (Attached Table 2 of Article 15 Paragraph 2 of the same rule). As this technical measure, for example, a user identification information assigning device and a download server are connected to the network, each time the VoIP-TA is powered on, the user identification information giving device is connected, and the telephone terminal is connected to the access network. A technique has been proposed in which user identification information is assigned to VoIP-TA based on information unique to a connection position, and a download server downloads telephone number setting information to VoIP-TA based on user identification information (see, for example, Patent Document 1). ).

JP 2008-54086 A

  However, in the method described in Patent Document 1, devices such as a user identification information adding device and a download server are required, and thus new devices must be introduced. Therefore, the present invention prevents an IP telephone assigned with “0AB to J number” from being used outside the area defined in Article 9, Paragraph 1, Item 1 without using a new device. The purpose is to do.

  The present invention specifies location information of a telephone when a telephone capable of call control by SIP (Session Initiation Protocol) establishes a session with a destination telephone via a router, a broadband access server, and an IP network. A method for obtaining a log of a session established from a management server of a VoIP service provider to a router, and an initial BAS which is an address of a broadband access server accessed when the first session is established A log storage step for storing log information including at least address information in the router; an initial BAS address information recording step in which the management server reads the initial BAS address information from the router and records it in a recording means provided in the management server; Session The management server reads the latest BAS address information, which is the address of the broadband access server accessed at the time of establishment, from the router and compares it with the initial BAS address information recorded in the recording means to determine whether or not both BAS address information match. And a BAS address comparison step.

  In the above method, if the latest BAS address information matches the initial BAS address information, it is determined that the telephone is being used in an appropriate region, and the established session is continued. On the other hand, if the latest BAS address information does not match the initial BAS address information, it is determined that the latest BAS address information is used in an area different from the geographical identification area, and the established session is disconnected.

  In the present invention, the management server of the VoIP service provider acquires the address information (initial BAS address information) of the broadband access server accessed when the first session of the IP phone is established, and at the time of the second and subsequent session establishment. Obtain the address information (latest BAS address information) of the accessed broadband access server, compare the initial BAS address information with the latest BAS address information, and if the initial BAS address information and the latest BAS address information do not match, It can be determined that the location of the telephone has been changed. Therefore, in that case, by disconnecting the connection, a telecommunication number different from the geographical identification display indicated by the telecommunication number defined in Article 9, Paragraph 1, Item 1 of the Telecommunication Number Rule will not be used. This is a technical measure imposed in Article 15, Paragraph 2, Appendix 2 of the same rule.

The block diagram which shows an example of the structure to which this invention is applied. The flowchart which shows an example of the procedure of this invention.

  A telephone 1 shown in FIG. 1 is a VoIP (Voice Over IP) terminal having a call control function based on SIP (Session Initiation Protocol), and makes a VoIP call by connecting to an IP network 3 via a router 2. It is possible. Further, the router 2 includes a storage unit 20, and the storage unit 20 can store a log relating to a PPPoE (registered trademark) session. If the telephone 1 does not support VoIP, a SIP compatible VoIP adapter is interposed between the telephone 1 and the router 2, and the telephone 1 and the VoIP adapter constitute a VoIP terminal.

  The management system 4 is a system for managing information related to users by a VoIP service provider (hereinafter referred to as “VoIP provider”), and is related to a management server 40 accessible to the IP network 3 and a user of the VoIP provider. And a user DB 41 which is a recording means for recording information. In the user DB 41, the user count and various related information are recorded for each user.

  A VoIP provider installs a broadband access server (BAS) 5 for each area of 0AB to J numbers, and each BAS in each area is assigned a unique BAS address.

  When an application for subscribing to the IP telephone service is made to the VoIP provider, the telephone 1 and the router 2 are installed in the house (step S1). The telephone 1 is set with a user count including information such as a user name and a password necessary for making a call with another telephone. When the router 2 is installed, a global fixed IP address is assigned from the ISP to the router 2 (steps S1 and S2), and the router 2 is set for connection to the IP network. In the example of FIG. 1, the ISP is a VoIP operator.

  When the router 2 is set in this way, the router 2 is connected to the management server 40 through the IP network 3 (step S3). The management server 40 requests the router 2 to transmit password information, and the password information is transmitted from the router 2. Then, the management server 40 performs authentication with a password (step S4).

  When the management server 40 permits access to the router 2 by authentication using a password, the management server 40 transmits information for instructing log acquisition of the established session to the router 2 (step S5, log acquisition instruction step). The router 2 that has received this information performs settings so that the log is stored in the built-in storage means 2 every time a session is established. When the router 2 is set in this way, a call by VoIP is possible.

  When a telephone number of another telephone is dialed to make a VoIP call from the telephone 1, the router 2 accesses the BAS 5 in the area where the router 2 is installed, establishes a session, and connects to the ISP IP network 3. To the destination telephone 7 via the IP network 3 and the destination router 6. At this time, a log related to the first session is stored in the storage unit 20 of the router 2. The log stored here includes at least the initial BAS address information which is the address information of the BAS 5 accessed when the first session is established (step S6, log storage step).

  On the other hand, when the telephone 1 first establishes a session, the management server 40 secures a log area for storing the log of the user count in the user DB 41 and remotely accesses the router 2 to store the storage means 20 of the router 2. The address information of BAS5 accessed at the time of the first session establishment is read out from the log stored in, and stored in the user DB 41 as the initial BAS address information (step S7, initial BAS address information recording step).

  During the second and subsequent VoIP calls from the telephone 1, the management server 40 remotely accesses the router 2 via the IP network 3, and the BAS 5 recorded in the router 2 when the session between the router 2 and the BAS 5 is established at that time. The management server 40 reads the address information as the latest BAS address information. The latest BAS address information is information for specifying the positions of the telephone 1 and the router 2.

  Next, the management server 40 compares the user's initial BAS address recorded in the user DB 41 with the latest BAS address information read from the router 2, and determines whether or not both BAS addresses match ( Step S8, BAS address comparison step). If the BAS address information matches, it is determined that the position of the telephone 1 has not been changed, and the connection is continued (step S9). On the other hand, if the BAS addresses do not match, the connection position has changed, and the telephone 1 and router 2 are located in a different area from the geographical identification indicated by the telecommunication number defined in Article 9, Paragraph 1, Item 1 of the Rules. Is taken out and used, the VoIP connection is disconnected (step S10).

  In this way, the management server 40 checks whether the BAS address logged in the router 2 at the time of the second and subsequent session establishment is equal to the BAS address at the time of the first connection, so that the telephone 1 can be used at an appropriate position. It is possible for the VoIP operator to grasp whether or not Therefore, the VoIP provider must take technical measures to prevent the use of a telecommunication number different from the geographical identification indicated by the telecommunication number defined in Article 9, Paragraph 1, Item 1 of the Telecommunication Number Regulations. You can fulfill the obligations set out in Appendix 2 of Article 15 paragraph 2 of the same rule.

  The present invention specifies the location information of an IP telephone and prevents a telecommunication number different from the geographical identification display indicated by the telecommunication number defined in Article 9, Paragraph 1, Item 1 of the Telecommunication Number Rules from being used. Since it can be used as an appropriate measure, it contributes to the proper use of IP phones.

1: Telephone 2: Router 20: Storage means 3: IP network 4: Management system 40: Management server 41: User DB
5: Broadband access server (BAS)
6: Router 7: Telephone

Claims (3)

A method for specifying location information of a telephone when a telephone capable of call control by SIP (Session Initiation Protocol) establishes a session with a destination telephone via a router, a broadband access server, and an IP network. ,
A log acquisition instruction step for instructing the router to acquire a log of an established session from the management server of the VoIP service provider;
A log storing step for storing log information including at least initial BAS address information, which is an address of a broadband access server accessed at the time of initial session establishment, in the router;
An initial BAS address information recording step in which the management server reads the initial BAS address information from the router and records it in a recording means provided in the management server;
The management server reads the latest BAS address information, which is the address of the broadband access server accessed at the time of the second and subsequent session establishment, from the router and compares it with the initial BAS address information recorded in the recording means, and both BAS addresses A method for specifying location information of an IP telephone, comprising at least a BAS address comparison step for determining whether or not the information matches. 2. The method for specifying location information of an IP telephone according to claim 1, wherein if the latest BAS address information matches the initial BAS address information, the session being established is continued. 3. The method for identifying location information of an IP phone according to claim 1, wherein when the latest BAS address information and the initial BAS address information do not match, the established session is disconnected.

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