JP2006157158A - IP phone number management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP telephone with which the initial cost is reduced, by making a plurality of small-scale management servers perform telephone number management. <P>SOLUTION: In an IP telephone system comprising number management servers 001-006 for managing telephone numbers by connecting a plurality of IP telephones, and an IP network for interconnecting the number management servers in a hierarchic structure, the number management server has number management information, consisting of the telephone number, physical address and installation position data of IP telephones connected to the number management server, and server connection information, consisting of the address of the number management server and the hierarchic connection relation data of the number management servers. When one IP telephone inputs the telephone number of other IP telephone requesting telephone conversation, the number management server refers to the number management information and the server connection information and connects one IP telephone to other IP telephone requesting telephone conversation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a telephone system using an Internet network, and more particularly to an IP telephone system that manages all connected telephones using a plurality of management servers.

  In recent years, IP telephone systems have come to be used as means for realizing communication cost reduction for in-house communications (internal and external lines). In general, the correspondence between the telephone number of the IP telephone and the address indicating the location information on the IP network called SIP address is performed by a server called SIP server or location server. However, a large-scale server is usually required for the SIP server and the location server, and the initial cost required for the introduction of the IP telephone system is large, so that it is difficult to introduce it in a small and medium enterprise. Therefore, there is a demand for construction of an IP telephone system that can be introduced at low cost.

As a conventional technique for reducing the cost, there is an IP telephone system as shown in Patent Document 1. In Patent Document 1, a single telephone address management server that manages all telephones is connected to the Internet to establish an IP telephone system, and even if the connection position of a telephone terminal is changed, the telephone We propose a system that can receive without changing the number.
JP 2003-25005 A

  However, in the prior art as shown in Patent Document 1, since the system manages the telephone number and address information of all telephones with a single telephone address management server, the initial cost is low when the telephone system is introduced. There is a problem of becoming higher.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an IP telephone system that can reduce initial costs by causing a plurality of small management servers to manage telephone numbers.

In order to solve the above problems, the present invention mainly adopts the following configuration.
An IP telephone system comprising: a number management server that connects one or more IP telephones to manage telephone numbers; and an IP network that connects a plurality of number management servers in a hierarchical structure,
The IP telephone has its own telephone number, physical address, and address of the connected number management server as telephone information,
The number management server holds number management information including a telephone number, a physical address, and installation position data of an IP telephone connected to the number management server, and the address of the number management server and the number management server Possesses server connection information consisting of the hierarchical connection relationship data between each other,
A configuration in which, when a telephone number of another IP telephone desired to make a call is input from one IP telephone, the number management server connects to the other desired IP telephone by referring to the number management information and server connection information; To do.

  When constructing an IP telephone system, it is possible to implement number management of all IP telephones by adopting a plurality of small number management servers, so that the IP telephone system can be introduced at a low initial cost.

  An IP telephone system according to an embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a diagram showing the overall configuration of a telephone number management system for IP telephones according to an embodiment of the present invention.

  In FIG. 1, 001 to 006 represent number management servers. The number management server has a number management table 101 and a server connection table 102 as shown in FIG. Reference numerals 011,012,021,022,031,023,033,041,042,051,052,061,062 and 063 represent IP telephones, respectively. Each IP telephone has a telephone information table as shown in FIG. Reference numerals 013 and 064 denote DNS servers. A DNS (Domain Name System) server returns an IP address as a return value in response to an inquiry from each number management server.

  FIG. 2 shows the internal configuration of each of the number management servers 001 to 006. Reference numeral 101 denotes a number management table. The number management table 101 stores the telephone number, location information, and physical address of the telephone connected to the number management server itself (see the description of FIG. 3 described later). . Reference numeral 102 denotes a server connection table. The server connection table 102 stores IP addresses in other number management servers connected to its own number management server and information on the vertical relationship of connections between the servers (a diagram to be described later). 4).

  FIG. 3 shows the contents of the number management table 101. Reference numeral 201 denotes a telephone number cell in the table 101. The telephone number cell 201 stores telephone number information of the connected IP telephone. Reference numeral 202 denotes a position information cell. The position information cell 202 stores position information (installation location information) of the connected IP telephone in the IP network. Usually, a SIP address is assumed, and it is possible to obtain an IP address from a DNS server using this information. Reference numeral 203 denotes a physical address cell. The physical address cell 203 stores a physical address unique to the connected IP telephone.

  FIG. 4 shows the contents of the server connection table 102. Reference numeral 301 denotes an address cell in the table 102, and the address cell 301 stores the IP address of the connected number management server. Reference numeral 302 denotes a connection position cell. In the connection position cell 302, information on whether a server to be connected is positioned higher or lower than its own server is stored.

  FIG. 5 shows a telephone information table held by the IP telephone. 401 represents a telephone telephone number cell in the table, and the telephone telephone number cell 401 is registered with the telephone number of the IP telephone. Reference numeral 402 denotes a connection server cell. In the connection server cell 402, the IP address of the number management server connected to the IP telephone is registered. Reference numeral 403 denotes a physical address cell. The physical address cell 403 stores a physical address unique to the IP telephone.

  The number management servers 001 to 006 are connected by an IP network and have a hierarchical structure. In the configuration example shown in FIG. 1, the number management server 4 (004) is the top, and the number management server 4 (004) includes a number management server 2 (002), a number management server 3 (003), and a number. Management server 5 (005), IP telephone 8 (041), and IP telephone 9 (042) are connected.

  Next, an operation example of the IP telephone system according to the embodiment of the present invention will be described. FIG. 6 is a diagram showing a configuration example of an IP telephone system when making a call from the IP telephone 12 to the IP telephone 1. FIG. 7 is a diagram showing the contents of the number management table and the server connection table in each number management server when the configuration example of the IP telephone system shown in FIG. 6 is adopted.

  In FIG. 6, it is assumed that the IP addresses, telephone numbers, and physical addresses in the number management servers 1 to 6 and the IP telephones 1, 2, 12, 13, and 14 are values as illustrated. The contents of the number management table and the server connection table in each number management server are as shown in FIG.

  Here, an example of operation when making a call from IP telephone 12 (061) connected to number management server 6 (006) to IP telephone 1 (011) connected to number management server 1 (001). explain.

  First, the telephone number “8850001” of IP telephone 1 (001) is input to IP telephone 12 (061). The IP telephone 12 (061) transmits the telephone number “8850001” to the number management server 6 (006). The number management server 6 (006) confirms the telephone number cell of its own number management table (601) to confirm whether the corresponding telephone number exists. As a result of the confirmation, the telephone number “8850001” does not exist. The number management server 6 (006) confirms the connection position cell in its own server connection table 602 and searches for a cell described as “higher”.

  The number management server 6 confirms the address cell and confirms that the IP address of the number management server connected to the host is “100.100.50.1”. The number management server 6 (006) inquires of the number management server 005 whose IP address is “100.100.50.1” about the location information of the IP telephone whose telephone number is “8850001”.

  The number management server 5 (005) confirms the telephone number cell of its own number management table and confirms whether the corresponding telephone number exists. As a result of the confirmation, the telephone number “8850001” does not exist. The number management server 5 (005) confirms the connection position cell in its own server connection table 603 and searches for a cell described as “upper”. The number management server 5 (005) confirms the address cell and confirms that the IP address of the number management server connected to the host is “100.100.40.1”. The number management server 5 (005) inquires of the number management server 4 (004) whose IP address is “100.100.40.1” about the location information of the IP phone whose telephone number is “8850001”. .

  The number management server 4 (004) confirms the telephone number cell of its own number management table and confirms whether the corresponding telephone number exists. As a result of the confirmation, the telephone number “8850001” does not exist. The number management server 4 (005) checks the connection position cell of its own server connection table 604 and searches for a cell described as “subordinate”. The number management server 4 (005) confirms the address cell and confirms that the IP address of the number management server connected to the lower layer is “100.100.20.1”. The number management server 4 (004) inquires of the number management server 2 (002) whose IP address is “100.100.20.1” about the location information of the IP telephone whose telephone number is “8850001”. .

  The number management server 2 (002) confirms the telephone number cell of its own number management table and confirms whether the corresponding telephone number exists. As a result of the confirmation, the telephone number “8850001” does not exist. The number management server 2 (002) checks the connection position cell of its own server connection table (605) and searches for the connection position cell described as “subordinate”. The number management server 2 (002) confirms the address cell and confirms that the IP address of the number management server connected to the lower layer is “100.100.10.1”. The number management server 2 (004) inquires of the number management server 1 (001) whose IP address is “100.100.10.1” about the location information of the IP phone whose telephone number is “8850001”. .

  The number management server 1 (001) confirms the telephone number cell of its own number management table and confirms whether the corresponding telephone number exists. As a result of the confirmation, the telephone number “8850001” exists. The number management server 1 (001) confirms the location information cell (see reference numeral 202 in FIG. 3) and finds that the location information of the IP telephone 1 is “SIP: denwa01@toyokawa.hita.com”. The number management server 1 (001) returns “SIP: denwa01@toyokawa.hita.com” as the location information of the IP telephone whose telephone number is “8850001” to the number management server 2 (002).

  The number management server 2 (002) returns “SIP: denwa01@toyokawa.hita.com” as the location information of the IP telephone having the telephone number “8850001” to the number management server 4 (004). The number management server 4 (004) returns “SIP: denwa01@toyoka.hita.com” to the number management server 5 (005) as the location information of the IP telephone having the telephone number “8850001”.

  The number management server 5 (005) returns “SIP: denwa01@toyokawa.hita.com” as position information of the IP telephone whose telephone number is “8850001” to the number management server 6 (006). The number management server 6 (006) confirms the IP address of the IP telephone whose location information is “SIP: denwa01@toyokawa.hita.com” with respect to the DNS server 2 (064).

  The DNS server 2 (064) returns the IP address “100.100.10.2” of the IP telephone set “SIP: denwa01@toyokawa.hita.com” to the number management server 6 (006). The number management server 6 (006) makes a call to the IP telephone 1 based on the obtained IP address “100.100.10.2”. In this way, it is possible to make a call using the number management server.

  Next, another operation example of the IP telephone system according to the embodiment of the present invention will be described. FIG. 8 shows a configuration example of the IP telephone system when the connection destination of the IP telephone 12 (061) connected to the number management server 6 (006) is changed to the connection to the number management server 1 (001). FIG. FIG. 9 is a diagram showing the contents of the number management table in the number management servers 1 and 6 and the telephone information table of the IP telephone 12 when the configuration example of the IP telephone system shown in FIG. 8 is adopted.

  In FIG. 8, it is assumed that the telephone numbers, physical addresses, and IP addresses in the number management servers 1 to 6 and the IP telephones 1, 2, 12, 13, and 14 are values as illustrated. Here, an operation example when the connection destination of the IP telephone 12 (061) connected to the number management server 6 (006) is changed to the connection to the number management server 1 (001) will be described.

  First, the IP telephone 12 (061) is connected to the number management server 1 (001). The number management server 1 (001) refers to the connection server cell and the physical address cell in the telephone information table 703 in the IP telephone 12 (061). As a result, it can be seen that the IP address of the number management server to which the IP telephone 12 (061) is connected is “100.100.60.1”.

  The number management server 1 (001) numbers information related to the IP telephone having the physical address “aa-bb-cc-e1” to the number management server 6 having the IP address “100.100.60.1”. A request for deletion from the management table 701 is transmitted. The number management server 6 (006) searches its own number management table 701 using the physical address cell “aa-bb-cc-e1” as a key. As a result of the search, the number management server 6 (006) searches for the IP telephone number and location information of the physical address “aa-bb-cc-e1” as “8680001”, “denwa61@ebina.hita.com”. I know that there is.

  The number management server 6 (006) deletes the information “aa-bb-cc-e1”, “8680001”, “denwa61@ebina.hita.com” in the number management table 701. Number management server 1 (001) writes its own IP address “100.100.10.1” in the connection server cell in telephone information table 701 of IP telephone 12 (061).

  The number management server 1 (001) inquires about the telephone number cell and the physical address cell in the IP telephone 12 (062). The IP telephone 12 (062) returns the telephone number “8680001” and the physical address “aa-bb-cc-e1” to the number management server 1 (001). The number management server 1 (001) registers the telephone number “8680001”, the physical address “aa-bb-cc-e1”, and the new location information “denwa03@toyokawa.hita.com” in its own number management table 702. . As described above, even when the connection destination of the IP telephone 12 (062) is changed, it can be continuously used without changing the telephone number.

  As described above, the embodiment of the present invention is characterized by having the following configuration and function. That is, a plurality of number management servers connected to one or more IP telephones and managing a telephone number by a higher or lower connection relationship are arranged, and each number management server is connected A plurality of number management servers having a correspondence table of telephone numbers, location information, and physical addresses of IP telephones, and also having a table of addresses of higher-order or lower-order connections connected to each other. The telephone number management of the IP telephone is carried out by As a result, it is not necessary to maintain the telephone number information of all telephones connected to the IP telephone network by a single server, and the number management of all IP telephones can be performed by efficiently using a plurality of small servers. Can be realized.

  In addition, when the IP phone holds the address information of the connection server and the installation location of the IP phone is changed, the address information is used to make a call between the server connected originally and the server connected later. By updating the number information, it is possible to receive calls with the same phone number without changing the phone number even when the IP phone installation location (location of the connected number management server) is moved. It becomes.

1 is a diagram showing an overall configuration of an IP telephone telephone number management system according to an embodiment of the present invention. FIG. It is a figure showing the internal structure of the number management server regarding this embodiment. It is a figure which shows the content of the number management table in the number management server regarding this embodiment. It is a figure which shows the content of the connection server table in the number management server regarding this embodiment. It is a figure which shows the content in the telephone information table in the IP telephone regarding this embodiment. 1 is a diagram illustrating a configuration example of an IP telephone system when a call is made from an IP telephone 12 to an IP telephone 1. FIG. It is a figure which shows the content of the number management table and server connection table in each number management server at the time of employ | adopting the structural example of the IP telephone system shown in FIG. 2 is a diagram showing a configuration example of an IP telephone system when a connection destination of an IP telephone 12 connected to a number management server 6 is changed to a connection to the number management server 1. FIG. FIG. 9 is a diagram showing the contents of a number management table in the number management servers 1 and 6 and a telephone information table of the IP telephone 12 when the configuration example of the IP telephone system shown in FIG. 8 is adopted.

Explanation of symbols

001 to 006: Number management servers 1 to 6
011,012,021,022,031,032,033,041,042, 051,052,061,062,063: IP telephones 1-14
101: Number management table 102: Server connection table 201: Telephone number cell 202: Location information cell 203: Physical address cell 301: Address cell 302: Connection location cell 401: Telephone telephone number cell 402: Connection server cell 403: Physical address cell 601 to 607: Content example of number management table and server connection table in number management server

Claims (3)

An IP telephone system comprising: a number management server that connects one or more IP telephones to manage telephone numbers; and an IP network that connects a plurality of number management servers in a hierarchical structure,
The IP telephone has its own telephone number, physical address, and address of the connected number management server as telephone information,
The number management server holds number management information including a telephone number, a physical address, and installation position data of an IP telephone connected to the number management server, and also includes the address of the number management server and the number management server. Possesses server connection information consisting of the hierarchical connection relationship data between each other,
When the telephone number of another IP telephone desired to be communicated is input from one IP telephone, the number management server refers to the number management information and server connection information to connect to the desired other IP telephone. A featured IP telephone system. In claim 1,
When the connection of the first IP telephone connected to the first number management server is changed to the second number management server having a different installation position,
Changing the address of the destination number management server in the telephone information of the first IP telephone to the address of the second number management server;
In the number management information in the second number management server, number management information consisting of a telephone number, a physical address, and installation position data corresponding to the first IP telephone is added,
From the number management information in the first number management server, delete the number management information consisting of the telephone number, physical address, and installation position data corresponding to the first IP phone,
An IP telephone system characterized in that it can be used continuously without changing the telephone number of the first IP telephone. In a telephone server system comprising a plurality of IP telephones and a number management server that connects the plurality of IP telephones and manages telephone numbers,
The number management server is connected to another number management server via an IP network with an upper or lower hierarchical structure,
The IP telephone has its own telephone number, physical address, and address of the connected number management server as telephone information,
The number management server holds number management information including a telephone number, a physical address, and installation position data of an IP telephone connected to the number management server, and the address of the number management server and the number management server A telephone server system characterized by possessing server connection information composed of hierarchical connection relation data between each other.

Images