JP2005318054A - Exchange equipment and method of transferring ip telephone set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide exchange equipment automatically changing setting necessary for communication between exchange equipment of a transfer source and exchange equipment of a transfer destination, and also to provide a method of transferring exchange equipment with high security and an IP telephone set. <P>SOLUTION: When the IP telephone set 4 is transferred from the exchange equipment A3a to the exchange equipment B3b, the exchange equipment B3b which has received a registration request from the IP telephone set 4 transmits notification of the registration request of the IP telephone set 4, to inquire the exchange equipment A3a about the presence or absence of registration of identification of the IP telephone set 4 on the basis of an exchange information table. The exchange equipment A3a determines whether the identification information of the IP telephone set 4 is registered in a telephone set information table, and, if it is registered, informs the exchange B3b of that effect and registers the IP address of the exchange equipment B3b in the telephone exchange information table as routing information so that the address is correlated to the identification information of the IP telephone set 4. In this way, the exchange equipment B3b to which the IP telephone set 4 is transferred is informed that a call has arrived at the exchange A3a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an exchange connected to a telephone and other exchanges via a network, and an IP telephone relocation method.

  As telephones used in offices and the like, IP (Internet Protocol) telephones using a network such as the Internet are spreading. This IP telephone can be connected to the exchange via a LAN (Local Area Network), and can talk to the other party via a dedicated line, a public network, the Internet, or the like.

  The exchange connected to this IP telephone stores address information such as an IP address and a MAC (Media Access Control) address for identifying the IP telephone as identification information in association with the telephone number in order to distribute the incoming call. A telephone information table. By referring to this telephone information table, the exchange selects and distributes to which IP telephone the call received from the outside line or extension is addressed.

  The telephone information table of the exchange is set manually by connecting the maintenance terminal device to the LAN and accessing the exchange from the maintenance terminal device.

  In such an exchange, when a new IP phone is installed or when the installation location of the IP phone changes, the environment (IP address, etc.) to which this IP phone is connected is changed, so that the phone information table is displayed. It is necessary to change settings such as registration and deletion. This change of setting means deleting the setting of the telephone information table of the exchange where the identification information of the IP telephone to be relocated is already registered, and newly registering the identification information in the telephone information table of the relocation destination exchange. is there.

  Further, the subnet of the connected network may be different depending on the installation location of the IP telephone. In this case, it is necessary to newly assign the IP address setting of the IP telephone at the transfer destination exchange.

Techniques for automatically assigning IP addresses, such as when such IP telephones are moved or newly installed, are described in Patent Documents 1 and 2.
Japanese Patent Application Laid-Open No. 10-303989 JP 2003-273899 A

  However, even if identification information such as an IP address is automatically assigned to the IP telephone at the transfer destination exchange, the setting of the telephone information table of the transfer source exchange that was originally connected is manually deleted. There is a need.

  Since this setting is manually deleted, the work is complicated. If you move from the office to the conference room only during the meeting, you need to delete the registration once when moving from the office to the conference room and once when returning from the conference room to the office. It becomes more complicated work.

In addition, if it is possible to register the IP phone to be automatically moved to the phone information table of the exchange at the transfer destination, so-called impersonation that requests registration with the same phone number as the IP phone that is not to be relocated. IP phones that have been used are unprotected, which is a security problem.

  Therefore, according to the present invention, when an IP telephone is relocated, a setting change necessary for distribution between the relocation source exchange and the relocation destination exchange can be automatically set, and a highly secure exchange and a relocation method of the IP telephone are provided. The purpose is to provide.

  The present invention includes a telephone information table in which identification information for identifying an IP telephone is registered, and distribution control means for distributing an incoming call to the corresponding IP telephone based on the identification information registered in the telephone information table. When an exchange information table for registering address information of other exchanges and a registration request from an IP phone are received, it is determined that the identification information of the IP phone is not registered in the phone information table. And means for notifying the registration request of the IP telephone based on the address information of the other exchange registered in the exchange information table, and the identification information of the IP telephone from the other exchange as a response to the registration request. And means for registering the identification information in the telephone identification information table when transmitted.

  The exchange of the present invention is a telephone in which the relocated IP telephone is already in use by checking with the other exchange whether or not the identification information of the relocated IP telephone is registered from the relocation destination exchange. Confirmation can be taken at the destination exchange. Therefore, it is possible to provide an exchange with high security.

  Since the data setting by this confirmation is automatically performed, setting changes such as manual registration and deletion are not necessary, and erroneous setting can be prevented.

  The first invention of the present application is a telephone information table in which identification information for identifying an IP telephone is registered, and a distribution control means for distributing an incoming call to the corresponding IP telephone based on the identification information registered in the telephone information table. And the exchange information table for registering the address information of other exchanges, and when the registration request from the IP telephone is received, the identification information of the IP telephone is not registered in the telephone information table. When the determination is made, the IP telephone identification information is transmitted from the other exchange as means for notifying the registration request of the IP telephone based on the address information of the other exchange registered in the exchange information table, and as a response to the registration request. And means for registering identification information in the telephone information table.

  Since the destination exchange confirms whether or not the IP telephone is registered based on the exchange information table in which the address information of the other exchange is registered, whether the IP telephone that has already been used has been relocated or new It can be confirmed whether it is installed in This confirmation can prevent registration of an IP telephone pretending to be an existing IP telephone, so that a highly secure exchange can be obtained. In addition, since the telephone number is included in the identification information of the IP telephone acquired from the transfer source exchange, setting of the telephone number and the like becomes unnecessary.

  When the second invention of the present application receives an IP telephone registration request from another exchange and determines that the identification information of the IP telephone is registered in the telephone information table, the IP telephone registration is performed in the telephone information table. It is characterized in that it has means for associating the address information of another exchange as a transfer destination that has notified the request and responding to the other exchange with the identification information of the IP telephone.

  Since the address information of the transfer destination exchange is registered in the transfer source exchange in association with the identification information of the IP telephone, it is not necessary to delete the settings of the transferred IP phone in the transfer source exchange. No complicated work is required.

  In the third invention of the present application, the distribution control means is configured such that identification information of an IP telephone to which an incoming call is to be distributed is registered in a telephone information table, and address information of another exchange to be relocated is associated with the identification information. If it is determined that the call is received, a notification that the call has arrived is transmitted based on the address information of the other exchange at the relocation destination associated with the identification information, and the identification information of the IP telephone to which the incoming call is to be distributed is the telephone information. When it is determined that the address information of the other exchange to be moved is not associated with the identification information registered in the table, the incoming call is distributed to the corresponding IP telephone based on the identification information. is there.

  Register the address information of the destination exchange in association with the identification information of the IP telephone in the destination exchange, and notify the destination exchange of the received call based on the address information of the destination exchange. Therefore, even if the IP telephone to which a call that has arrived at the relocation source is to be distributed has been relocated to the relocation destination exchange, the call can be easily distributed to the IP telephone.

  The fourth invention of the present application is characterized in that the registration request is notified by broadcast. If it is connected to a network of the same subnet as the transfer source exchange, the transfer source exchange is inquired by broadcast, so it is not necessary to refer to the address information of the inquiry destination exchange from the exchange information table. Therefore, the exchange address table can be omitted.

  The fifth invention of the present application measures the time interval of the registration request notified from the IP telephone of the identification information registered in the telephone information table, and when the registration request notification is not received even after a predetermined time has elapsed, A means for deleting the identification information from the telephone information table; a means for notifying the other switch of the relocation source where the identification information is registered; Receiving a notification to the effect that the identification information registered in the telephone information table has been deleted from the other exchange, and means for deleting the address information of the other exchange associated with the identification information in the telephone information table. It is a feature.

  When the transfer request at the relocation destination does not receive a registration request notification transmitted from the IP telephone at a predetermined interval for a predetermined time or longer, the identification information of the IP telephone is deleted from the telephone information table and the relocation source exchange is notified accordingly. To be notified. As a result, it is possible to delete the identification information of the relocated IP telephone from the telephone information table of the relocation destination exchange, so that the complicated work of deleting the relocation destination switch setting and the setting of the relocation source exchange It is possible to eliminate the need for return work.

  A sixth invention of the present application is a telephone information table in which identification information for identifying an IP telephone is registered, and a distribution control means for distributing an incoming call to the corresponding IP telephone based on the identification information registered in the telephone information table And a step of registering the address information of another switch in the switch information table, and when the registration request from the IP phone is received, the identification information of the IP phone is Determining whether or not the information is registered in the telephone information table, and when the identification information of the IP telephone is not registered in the telephone information table, the IP telephone based on the address information of the other exchange registered in the exchange information table IP telephone identification information is sent from another exchange as a response to the registration request and the step of notifying the registration request. When, in which it characterized in that a step of registering the identification information to the telephone identification information table.

  Since the destination exchange confirms whether or not the IP telephone is registered based on the exchange information table in which the address information of the other exchange is registered, whether the IP telephone that has already been used has been relocated or new It can be confirmed whether it is installed in This confirmation can prevent registration of an IP telephone pretending to be an existing IP telephone, so that a highly secure exchange can be obtained. In addition, since the telephone number is included in the identification information of the IP telephone acquired from the transfer source exchange, setting of the telephone number and the like becomes unnecessary.

  According to a seventh aspect of the present invention, when an IP telephone registration request is received from another exchange, a step of determining whether or not the identification information of the IP telephone is registered in the telephone information table; When it is determined that the identification information is registered in the telephone information table, the telephone information table is associated with the address information of the other exchange that is the transfer destination that has notified the registration request of the IP telephone, and the identification information of the IP telephone is And a step of responding to the exchange.

  Since the address information of the transfer destination exchange is registered in the transfer source exchange in association with the identification information of the IP telephone, it is not necessary to delete the settings of the transferred IP phone in the transfer source exchange. No complicated work is required.

  When the eighth invention of the present application determines that the identification information of the IP telephone to which the incoming call is to be distributed is registered in the telephone information table, and the address information of the other exchange to be moved is associated with the identification information, Based on the address information of the other exchange at the relocation destination associated with the identification information, a notification that the call has arrived is transmitted, and the identification information of the IP telephone to which the incoming call is to be distributed is registered in the telephone information table, In addition, when it is determined that the address information of another exchange is not associated with the identification information, a step of delivering the incoming call to the corresponding IP telephone based on the identification information is provided.

  Register the address information of the destination exchange in association with the identification information of the IP telephone in the destination exchange, and notify the destination exchange of the received call based on the address information of the destination exchange. Therefore, even if the IP telephone to which a call that has arrived at the relocation source is to be distributed has been relocated to the relocation destination exchange, the call can be easily distributed to the IP telephone.

  The ninth invention of the present application measures the time interval of the registration request notified from the IP telephone of the identification information registered in the telephone information table, and when the registration request notification is not received even after a predetermined time has elapsed, A step of deleting the identification information from the telephone information table, a step of notifying the other exchange of the moving source in which the identification information is registered that the identification information has been deleted from the telephone information table; Receiving notification from the exchange that the identification information registered in the telephone information table has been deleted, and deleting the address information of the other exchange associated with the identification information in the telephone information table. Is.

  When the transfer request at the relocation destination does not receive a registration request notification transmitted from the IP telephone at a predetermined interval for a predetermined time or longer, the identification information of the IP telephone is deleted from the telephone information table and the relocation source exchange is notified accordingly. To be notified. As a result, it is possible to delete the identification information of the relocated IP telephone from the telephone information table of the relocation destination exchange, so that the complicated work of deleting the relocation destination switch setting and the setting of the relocation source exchange It is possible to eliminate the need for return work.

(Embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of an exchange system using an exchange according to an embodiment of the present invention. As shown in FIG. 1, in an exchange system 1, three exchanges 3 and an IP telephone 4 are connected by a LAN 2 that is a network. The exchange 3 is an IP-PBX (Internet) that connects extension IP telephones via the LAN 2 or connects another IP telephone connected to the network to the extension IP telephone.
Protocol-Private Branch eXchange). Although not shown, the exchange 3 also has an interface for connecting a subscriber telephone network, an ISDN (Integrated Services Digital Network) line, or the like.

  In FIG. 1, for the sake of convenience, the exchange A 3a, the exchange B 3b, and the exchange C 3c are illustrated as the exchange 3. However, the number depends on the number of connected IP telephones 4 and the like, the installation location, and the like. Can be determined as appropriate. The LAN 2 to which the exchange 3 is connected is connected by a router such as a network relay device (not shown). Accordingly, the exchange A3a, the exchange B3b, and the exchange C3c are connected to networks with different subnets.

  An IP telephone 4 is connected to the exchange A3a. This IP telephone 4 is connected to a network in the same subnet as the exchange A3a. In FIG. 1, for convenience, only one IP telephone 4 is connected to the exchange A3a. However, the exchange A3a, the exchange B3b, and the exchange C3c include a plurality of IP telephones (not shown). Connected.

  Exchange A3a, exchange B3b, and exchange C3c communicate via LAN2. Since this procedure only needs to allow the exchanges 3 to communicate with each other, the procedure may be a procedure based on various protocols or an original procedure. The IP telephone 4 communicates with the exchange A3a according to a procedure based on SIP (Session Initiation Protocol). The IP telephone 4 transmits a registration request notification requesting registration to a telephone identification table (to be described later) of the exchange 3 to the connected exchange 3. It also has a function of transmitting a registration request notification at predetermined time intervals even after registration is completed.

  Next, the configuration of the exchange according to the embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a diagram for explaining the configuration of the exchange according to the embodiment of the present invention. FIG. 3 shows the structure of the telephone information table. FIG. 4 is a diagram showing the configuration of the exchange information table. As shown in FIG. 2, the exchange 3 includes an operation management table 11, a call control unit 12, a LAN-I / F unit 13, and a LAN switch 14.

  The operation management table 11 includes a telephone information table 11a and an exchange information table 11b. The telephone information table 11 a and the exchange information table 11 b are storage means for storing information on the IP telephone 4 connected to the exchange 3 and information on other exchanges 3.

  The configuration of the telephone information table 11a will be described with reference to FIG. The telephone information table 11a stores the telephone number, MAC address, and IP address of the IP telephone 4 as identification information. Further, routing information that is address information of the other exchange 3 and a temporary setting flag are stored in association with the identification information. These temporary settings flags associated with these settings are flags for distinguishing whether the currently connected IP telephone 4 is in a temporary installation state or a permanent installation state.

  That is, when the temporary setting flag is “0”, it indicates that the connected IP telephone 4 is in a permanently installed state. Further, when the temporary setting flag is “1”, it indicates that the connected IP telephone 4 is in a temporarily installed state. For example, when the IP telephone 4 is moved from the exchange A3a to the exchange B3b, the IP telephone 4 becomes the temporary setting flag “1” in the telephone information table 11a of the exchange B3b.

  As the routing information, when the connected IP telephone 4 is moved to another exchange 3, the IP address of the exchange 3 as the transfer destination is registered. For example, when the IP telephone 4 is moved from the exchange A3a to the exchange B3b, the IP address of the exchange B3b is registered in the routing information of the telephone information table 11a of the exchange A3a.

  Next, the exchange information table 11b will be described with reference to FIG. As shown in FIG. 4, the exchange information table 11b stores a node name and an IP address. The node name is the name of another exchange 3 installed in the same workplace or company. The IP address is address information assigned to the exchange 3. The IP addresses of other exchanges stored in the exchange information table 11b may be the same subnet or exchanges connected to different subnets.

  Returning to FIG. 2, the call control unit 12 includes a distribution control unit 12a, a registration request notification unit 12b, a registration response unit 12d, an information table registration unit 12e, and a registration management unit 12f. The distribution control means 12a distributes the incoming call to the corresponding IP telephone 4 based on the telephone number and IP address which are identification information of the telephone information table 11a. When the distribution control means 12a determines that the identification information of the IP telephone 4 to which the incoming call is to be distributed is registered in the telephone information table 11a and the IP address of the transfer destination exchange is associated with the identification information, A notification that the call has arrived is transmitted based on the IP address information of the destination exchange associated with the identification information.

  However, if the identification information of the IP telephone 4 to which the incoming call is to be distributed is registered in the telephone information table 11a and it is determined that the identification information is not associated with the IP address of the destination exchange, the incoming call is received based on the identification information. The call is distributed to the corresponding IP telephone 4. For example, when the IP telephone 4 is relocated from the exchange A3a to the exchange B3b, the identification information of the IP telephone 4 and the IP address of the destination exchange B3b are registered in the telephone information table 11a of the exchange A3a. On the other hand, the identification information of the IP telephone 4 is registered in the telephone information table 11a of the exchange B3b.

  Therefore, when the exchange A3a receives a call to the IP telephone 4, the distribution control means 12a of the exchange A3a determines that the identification information of the IP telephone 4 is registered in the telephone information table 11a. Then, it is determined that the identification information of the IP telephone 4 is registered, and that the IP address of the destination exchange B3b associated with the identification information is registered in the routing information, and based on the IP address of the exchange B3b Send a notification that a call has arrived.

  Further, when the exchange B3b receives a call to the IP telephone 4, the distribution control means 12a of the exchange B3b determines that the identification information of the IP telephone 4 is registered in the telephone information table 11a. Then, it is determined that the identification information is registered in the IP telephone 4 and the IP address of the exchange associated with the identification information is not registered in the routing information, and the distribution control means 12a of the exchange B 3b The incoming call is distributed to the IP telephone 4 based on the identification information.

  When the registration request notifying means 12b receives the registration request from the IP telephone 4 and determines that the identification information of the IP telephone 4 is not registered in the telephone information table 11a, the other exchange registered in the exchange information table 11b. Is a means for notifying the registration request of the IP telephone 4 on the basis of the IP address.

For example, when the exchange B3b receives a registration request transmitted from the IP telephone 4, the registration request notifying means 12b of the exchange B3b determines whether or not the identification information of the IP telephone 4 is registered in the telephone information table 11a of the exchange B3b. If it is determined and not registered, the exchange B3
The registration request of the IP telephone 4 is notified based on the IP address of the exchange A3a registered in the exchange information table 11b of b.

  If the exchange A3a that is the transfer source and the exchange B3b that is the transfer destination are connected to a network in the same subnet, the registration request notification means 12b transmits a notification of the registration request of the IP telephone 4 by broadcast. Whether the notification of the registration request of the IP telephone 4 is transmitted by designating the partner exchange 3 by the exchange information table 11b or by broadcast can be appropriately determined according to the network connection form.

  Upon receiving the transmitted notification of registration request for the IP telephone 4 from the exchange 3 as the relocation destination, the registration response means 12d acquires the identification information of the IP telephone 4 from the telephone information table 11a in response to the notification. If registered, a notification to the effect of registration is returned to the exchange 3 as the transfer destination.

  For example, when the IP telephone 4 is moved from the exchange A3a to the exchange B3b, a registration request from the IP telephone 4 is transmitted to the exchange B3b. Upon receiving this registration request notification, the exchange A3a transmits a registration request notification of the IP telephone 4 to the exchange A3a. The registration response means 12d of the exchange A3a that has received the notification of the registration request registers the IP address of the exchange B3b as the transfer destination and the identification information of the IP telephone 4 in the telephone information table 11a in association with each other, and also identifies the identification information of the IP telephone 4. To the exchange B3b.

  The information table registration means 12e is means for registering the identification information in the telephone information table 11a when the identification information of the IP telephone 4 is transmitted as a response to the registration request from the exchange 3 as the transfer source. For example, when the identification information of the IP telephone 4 is transmitted from the exchange A3a as the transfer source as a response to the registration request, the information table registration means 12e of the exchange B3b that has received this response uses the identification information of the IP telephone 4 as a response. While registering in the identification information table 11a, the temporary setting flag is set to “1”.

  The registration management unit 12f measures a time interval at which a registration request notified from the IP telephone 4 having the identification information registered in the telephone information table 11a is transmitted at a predetermined interval, and the measured time interval is equal to or longer than a predetermined time (that is, When the registration request notification is not transmitted for a predetermined time or more), the identification information of the IP telephone 4 is deleted from the telephone information table 11a from the telephone information table 11a, and the identification information is deleted from the telephone information table 11a. The transfer source exchange 3 that has made a response that the identification information is registered is notified.

  When the registration management means 12f receives a notification from the transfer destination exchange 3 that the identification information registered in the telephone information table 11a has been deleted, the transfer management switch 12d associated with the identification information in the telephone information table 11a. 3 IP address is deleted.

  For example, when the IP telephone 4 is moved from the exchange A3a to the exchange B3b and then moved again to the exchange A3a, the registration management means 12f of the exchange B3b receives a registration request notified from the IP telephone 4. By not being notified even after a lapse of time, the identification information of the IP telephone 4 is deleted from the telephone information table 11a and the deletion is notified to the exchange A3a. Upon receiving this notification, the registration management means 12f of the exchange A3a deletes the IP address of the exchange B3b registered in the routing information of the IP telephone 4 in the telephone information table 11a.

The LAN-I / F unit 13 is an interface that performs electrical conversion such as 100Base-T or 100Base-Tx in order to connect to another exchange 3 or an IP telephone 4. The LAN switch 14 refers to the MAC address of the packet input via the LAN-I / F unit 13, and sends it to another switch 3 having this MAC address, the IP telephone 4, or a router (not shown). Switch routes and send. A packet transmitted from the call control means 12 is also transmitted via the LAN switch 14.

  The operation of the exchange according to the embodiment of the present invention configured as described above will be described with reference to the drawings. 5 to 13 are diagrams for explaining the operation of the exchange according to the embodiment of the present invention.

  In the present embodiment, an example will be described in which the IP telephone 4 connected to the exchange A3a is moved to the exchange B3b. As shown in FIG. 5, the mutual IP addresses are registered in the exchange information table 11b of the exchange A3a and the exchange B3b. In this case, since the IP address of the exchange B3b is “192.168.11.1”, the exchange information table of the exchange A3a has “exchange B” as the node name and “192.168.1.11” described above as the IP address. .1 "is registered. Similarly, in the exchange information table 11b of the exchange B3b, “Exchange A” is registered as the node name, and “192.168.0.10.1” is registered as the IP address. This is registered in the exchange information table 11b by input means not shown in FIG. Thus, the respective exchanges 3 are associated with each other by the exchange information table 11b.

  As shown in FIG. 6, the connection of the IP telephone 4 is changed from the exchange A3a to the exchange B3b. As shown in FIG. 7, when the registration request notification means 12b receives a registration request notification requesting registration in the telephone information table 11a transmitted from the IP telephone 4, the telephone number of the IP telephone 4 included in the registration request notification. Is not in the telephone information table 11a, the registration request of the IP telephone 4 is used to inquire the exchange A3a whether or not the telephone number included in the received registration request notification is registered in the telephone information table 11a of the exchange A3a. To be notified.

  The notification of the registration request of the IP telephone 4 to the exchange A3a is made based on the exchange information table 11b shown in FIG. 5, and is addressed to the IP address “192.168.10.1” of the exchange A3a. In the present embodiment, the telephone number is used as identification information for identifying the IP telephone 4 from the exchange B 3b to the exchange A 3a. However, any identification information that can identify the IP telephone 4 may be used. You can also use an address. In addition, an IP address can be used as identification information for specifying the IP telephone 4 within the same subnet.

  Further, the registration request notification means 12b may transmit the notification of the registration request of the IP telephone 4 by broadcast if the exchange 3 to be relocated is connected to the network of the same subnet.

  As shown in FIG. 8, a notification that the telephone number of the IP telephone 4 is registered in the telephone information table 11a of the exchange A3a is returned from the exchange A3a to the exchange B3b. This is because the telephone number of the IP telephone 4 is changed to the telephone information in response to the registration request notification which is an inquiry of the telephone number of the IP telephone 4 which has transmitted the registration request notice from the exchange B 3b by the registration response means 12d of the exchange A 3a. If it is acquired from the table 11a and registered, a notification that it is registered is returned to the exchange B3b.

  As shown in FIG. 9, the information table registration means 12e of the exchange B 3b receives a response indicating that the IP telephone 4 is registered in the telephone information table 11a from the exchange A 3a. Then, the information table registration means 12e of the exchange B3b associates the telephone number and MAC address of the IP telephone 4 that transmitted the registration request notification with the newly assigned IP address as identification information in response to the received exchange A3a. To the telephone information table 11a. At that time, the temporary setting flag associated with the relocated IP telephone 4 is set to “1”.

  Further, the information table registration means 12e of the exchange A3a associates the identification information of the IP telephone 4 acquired from the telephone information table 11a with the IP address of the exchange 3 as the inquired destination, and routing information of the telephone information table 11a. Register with. In this way, the IP telephone 4 can change the connection from the exchange A3a to the exchange B3b in the form of temporary registration. By checking the transfer source exchange 3, it is possible to easily determine that the transferred IP telephone 4 is an IP telephone 4 that is already in use, so that the exchange 3 with high security can be obtained.

  Next, the incoming operation of the exchange A3a and the exchange B3b to the relocated IP telephone 4 will be described with reference to FIG. As shown in FIG. 10, when there is a call setting request indicating an incoming call, the distribution control means 12a of the exchange A3a acquires the telephone number corresponding to the call from the telephone information table 11a of the exchange A3a and The IP address of the exchange B3b associated with the number is acquired. Then, a notification that the call has arrived is transmitted based on the IP address of the exchange B3b in the telephone information table 11a.

  When the distribution control means 12a of the exchange B3b receives a call setting request that is a notification that the call to the IP telephone 4 has arrived, it acquires the telephone number included in the call setting request from the telephone information table 11a, and exchange information table 11a. To obtain the IP address of the IP telephone 4. Then, the incoming call is notified to the IP telephone 4 addressed to the IP address.

  The IP telephone 4 that has received the call starts ringing to indicate that the call is ringing when the call is received. Then, in a reverse order to the incoming call, a notification indicating that the call is being sent is sent to the exchange B3b, the exchange A3a, and the caller's telephone. When the IP telephone 4 is off-hooked, it is notified in the same order as the response indicating that it is ringing.

  Further, when the exchange 3 has a voice mail function, as shown in FIG. 11, the voice mail of the exchange B 3b to which the relocated IP telephone 4 is connected responds. As described above, the registration of the relocated IP telephone 4 is automatically registered as the relocation destination exchange B3b, so that the relocation destination exchange B3b responds so that the management of the IP telephone 4 is facilitated. It can be carried out.

  Next, the operations of the exchange A3a and the exchange B3b when the relocated IP telephone 4 returns the connection to the exchange A3a that is the relocation source will be described with reference to FIG. For example, the IP telephone 4 used in the office is brought to the conference room where the conference is held, and the IP telephone 4 is returned to the office at the end of the conference. For example, the connection is changed to the room exchange B3b and the connection is changed to the office exchange A3a.

  As shown in FIG. 12, the connection of the IP telephone 4 is changed from the exchange B3b to the exchange A3a. The registration management means 12f of the exchange B3b measures a time interval at which registration request notifications from the IP telephones 4 having telephone numbers registered in the telephone information table 11a are transmitted at predetermined intervals. This predetermined interval can be appropriately determined by setting. For example, it can be 30 minutes to several hours.

  The registration management means 12f of the exchange B3b deletes the identification information of the IP telephone 4 from the telephone information table 11a from the telephone information table 11a and the identification information from the telephone information table 11a when the measured time interval exceeds a predetermined time. Is deleted, it is notified to the exchange A3a which is the relocation source which has made a response that the identification information is registered.

That is, the fact that the registration request notification is not received for a predetermined time from the IP telephone 4 indicates that the connection of the IP telephone 4 has been changed, so that the identification of the IP telephone 4 registered in the exchange B3b that was the relocation destination is identified. Information is deleted. Then, the exchange A3a as the relocation source that has received the notification that the identification information has been deleted from the telephone information table 11a receives the registration request notification from the reconnected IP telephone 4 from the telephone information table 11a. The routing information of the IP telephone 4 is deleted.

  In this way, the return setting of the temporarily moved IP telephone 4 can be automated, so that the exchange 3 with high convenience can be obtained. This is a temporary registration state in which the IP address of the transfer destination switch B3b is registered as the routing information in the telephone information table 11a of the transfer source switch A3a, so that the return setting can be easily performed.

  Next, when the IP telephone 4 is moved from the exchange A3a to the exchange B3b and the state shown in FIG. 9 is changed, the exchange A3a, the exchange B3b, and the exchange C3c when the IP telephone 4 is further moved to the exchange C3c. Will be described with reference to FIG.

  As shown in FIG. 13, the connection of the IP telephone 4 is changed from the exchange B3b to the exchange C3c. The IP telephone 4 whose connection has been changed transmits a registration request notification for requesting registration in the telephone information table 11a of the exchange C3c. When the registration request notification means 12b of the exchange C3c receives the registration request notification, the exchange information table 11b indicates whether or not the telephone number included in the received registration request notification is registered in the telephone information table 11a of the exchange A3a. Refer to the exchange A3a and the exchange B3b.

  In response to this inquiry, the exchange B 3b recognizes that the connection change of the IP telephone 4 has occurred, and deletes the identification information of the IP telephone 4 from the telephone information table 11a. At this time, whether or not the identification information of the IP telephone 4 corresponding to the temporary setting is the temporary setting is determined by referring to the temporary setting flag of the telephone information table 11a. Then, the exchange A3a changes the routing information in the telephone information table 11a from the exchange B3b to the IP address of the exchange C3c.

  Thus, even if a connection change occurs from the transfer destination exchange 3 to the next exchange 3, the setting can be changed in the same procedure. The identification information of the IP telephone 4 in the telephone information table 11a of the exchange B3b is deleted by receiving an inquiry about the registration / non-registration of the IP telephone 4 from the exchange C3c. The registration management means 12f of the exchange B3b Since the registration request notification is not received from the IP telephone 4 for a predetermined time, the identification information of the IP telephone 4 registered in the exchange B 3b may be deleted.

  This means that the fact that the registration request notification has not been received from the IP telephone 4 for a predetermined time indicates that the connection of the IP telephone 4 has been changed, so that the connection of the IP telephone 4 has been changed from the exchange B 3 b to another exchange 3. This is because it can be determined.

  In the present embodiment, a case has been described in which there is an exchange 3 as a transfer source of the IP telephone 4. That is, in the case where an inquiry about whether or not the identification information of the IP telephone 4 is registered is transmitted from the transfer destination exchange 3 based on the exchange information table 11b, a response indicating that the registration is registered from the transfer source exchange 3 is returned. is there.

For example, when a new IP telephone 4 is installed, since there is no exchange 3 as a relocation source, an inquiry about whether or not the identification information of the IP telephone 4 is registered is transmitted based on the exchange information table 11b. Notification from the exchange 3 indicating that it has not been registered is given. In this case, the registration of the IP telephone in the telephone information table 11a of the transfer destination exchange 3 may be performed manually or the like that is conventionally performed. By doing this, it is possible to prevent the new IP telephone 4 from being installed and being connected unnecessarily by inhibiting automatic registration when there is no transfer source exchange 3.

  In the present invention, when an IP telephone is relocated, the settings of the relocation source exchange and the relocation destination exchange can be easily changed, and erroneous settings can be prevented, so that the IP telephone and other exchanges can be connected via the network. It is suitable for the exchange of connected exchanges and IP telephones.

The figure which shows the structure of the switching system using the switching system which concerns on embodiment of this invention. The figure explaining the structure of the exchange which concerns on embodiment of this invention The figure which shows the composition of the telephone information table Diagram showing the configuration of the exchange information table The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention

Explanation of symbols

1 Exchange system 2 LAN
3 Exchange 3a Exchange A
3b Exchange B
3c Exchange C
4 IP telephone 11 Operation management table 11a Telephone information table 11b Switch information table 12 Call control means 12a Distribution control means 12b Registration request notification means 12d Registration response means 12e Information table registration means 12f Registration management means 13 LAN-I / F section 14 LAN switch

Claims (9)

A telephone information table in which identification information for identifying an IP telephone is registered;
A switch having distribution control means for distributing an incoming call based on the identification information registered in the telephone information table to a corresponding IP telephone;
An exchange information table for registering address information of other exchanges;
When determining that the identification information of the IP telephone is not registered in the telephone information table when receiving the registration request from the IP telephone, based on the address information of the other exchange registered in the exchange information table, Means for notifying the registration request of the IP telephone;
An exchange comprising: means for registering the identification information in the telephone information table when the identification information of the IP telephone is transmitted from the other exchange as a response to the registration request. If it is determined that the identification information of the IP telephone is registered in the telephone information table when the IP telephone registration request is received from another exchange, the relocation that notified the IP telephone registration request to the telephone information table 2. The exchange according to claim 1, further comprising means for associating address information of the other exchange as a destination and responding to the other exchange with identification information of the IP telephone. When the distribution control means determines that the identification information of the IP telephone to which the incoming call is to be distributed is registered in the telephone information table, and the address information of the other exchange at the relocation destination is associated with the identification information. , Based on the address information of the other exchange at the relocation destination associated with the identification information, sending a notification that the call has arrived,
When it is determined that the identification information of the IP telephone to which the incoming call is to be distributed is registered in the telephone information table and that the address information of the other exchange to be relocated is not associated with the identification information, based on the identification information 3. The exchange according to claim 2, wherein the incoming call is distributed to the corresponding IP telephone. The exchange according to any one of claims 1 to 3, wherein the registration request is notified by broadcast. The time interval of the registration request notified from the IP telephone of the identification information registered in the telephone information table is measured, and when the registration request notification is not received even after a predetermined time has elapsed, Means for deleting from the information table;
Means for notifying the other exchange of the relocation source in which the identification information is registered that the identification information has been deleted from the telephone information table;
Means for deleting address information of another switch associated with the identification information in the telephone information table when receiving a notification that the identification information registered in the telephone information table has been deleted from the other switch of the transfer destination 5. The exchange according to claim 1, further comprising: A telephone information table in which identification information for identifying an IP telephone is registered;
A method of relocating an IP telephone to an exchange having distribution control means for distributing an incoming call to the corresponding IP telephone based on identification information registered in the telephone information table,
Registering the address information of other exchanges in the exchange information table;
Determining whether or not the identification information of the IP telephone is registered in the telephone information table when receiving a registration request from the IP telephone; and
Notifying the registration request of the IP telephone based on the address information of the other exchange registered in the exchange information table when the identification information of the IP telephone is not registered in the telephone information table;
A method of relocating an IP telephone, comprising the step of registering the identification information in the telephone identification information table when the identification information of the IP telephone is transmitted from the other exchange as a response to the registration request. . Determining whether or not the identification information of the IP telephone is registered in the telephone information table when a registration request for the IP telephone is received from another switch;
When it is determined that the identification information of the IP telephone is registered in the telephone information table, the telephone information table is associated with the address information of another exchange that is a relocation destination that has notified the registration request of the IP telephone, and the IP 7. The method of moving an IP telephone set according to claim 6, further comprising the step of responding to the telephone exchange identification information to another exchange. When it is determined that the identification information of the IP telephone to which the incoming call is to be distributed is registered in the telephone information table and the address information of the other exchange at the relocation destination is associated with the identification information, the identification information is associated with the identification information. Based on the address information of the other exchange to which the relocation is made, and sends a notification that the call has arrived,
If it is determined that the identification information of the IP telephone to which the incoming call is to be distributed is registered in the telephone information table and that the address information of another switch is not associated with the identification information, the incoming call is based on the identification information. The method of transferring an IP telephone set according to claim 7, further comprising the step of: distributing to a corresponding IP telephone set. The time interval of the registration request notified from the IP telephone of the identification information registered in the telephone information table is measured, and when the registration request notification is not received even after a predetermined time has elapsed, Deleting from the information table;
Notifying that the identification information has been deleted from the telephone information table to the other switch of the relocation source in which the identification information has been registered;
Receiving a notification that the identification information registered in the telephone information table has been deleted from another exchange at the destination, and deleting the address information of the other exchange associated with the identification information in the telephone information table; ,
The method of moving an IP telephone set according to any one of claims 6 to 8, characterized by comprising:

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