JP2005260642A - Ip telephone set, exchange, exchange system and its registration method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP telephone set, an exchange and an exchange system that are highly convenient because address information, etc., of a telephone set and an exchange can be easily set even if the telephone set and the exchange are connected to networks of different subnets and to provide its registration method. <P>SOLUTION: Even when an IP telephone set 6b is installed to a second network 3 whose subnet is different from that of a first network 2 with the exchange 5 connected thereto, first, the IP address of the exchange 5 is acquired in the first network 2 by broadcasting to thereby perform temporary registration. Next, the second network 3 being an installation destination is connected, and the IP telephone set 6b can be actually registered in the exchange 5 connected to the first network 2 by registering the IP address of the IP telephone set 6b, or so on. Consequently, it is possible to easily register the IP telephone set 6b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an exchange system in which an exchange and an IP telephone housed in the exchange are connected by a LAN (Local Area Network) and a registration method thereof.

  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 a telephone exchange via a LAN, and can talk to a call partner via a dedicated line, a public network, the Internet, or the like.

In order to be able to make or receive calls using this IP phone, various settings need to be made on the IP phone side and the exchange side. Since the IP telephone and the exchange are connected via a LAN, it is necessary to assign an IP address. This IP address is centrally managed on the exchange side. There is known an exchange system in which an IP address is dynamically assigned to an IP telephone by the exchange (see, for example, Patent Document 1). In the exchange system disclosed in Patent Document 1, an exchange receives a broadcast packet from an IP telephone and dynamically assigns an IP address.
JP 2003-273899 A

  In the exchange system described in (Patent Document 1), address information for identifying a telephone such as an IP address is assigned using a broadcast packet.

  However, when the exchange and the IP telephone are connected to networks with different subnets, and these networks are connected via a network relay device such as a router, the broadcast packet transmitted by the exchange or the IP telephone is transmitted to the network relay device. Address information cannot be assigned to the telephone. Also, an IP phone connected to a network in the same subnet as the exchange often moves with this IP phone due to the transfer of the user who uses the IP phone, resulting in a different subnet network. is there.

  As described above, when the exchange and the IP telephone are connected to networks in different subnets, address information such as an IP address assigned to the IP telephone, a MAC (Media Access Control) address of the IP telephone, It is necessary to set the number and address information such as the IP address of the exchange one by one to the IP telephone. Since this setting operation is an enumeration of alphanumeric characters, it is complicated and may be set erroneously.

  Therefore, the present invention provides a highly convenient IP phone, an exchange, an exchange system, and a registration method therefor, because the address information and the like can be easily set even when the IP phone and the exchange are connected to different subnet networks. For the purpose.

The present invention is an IP telephone that can communicate with an exchange, an interface for communicating with the exchange, a storage unit for storing address information of the exchange, and address information of the exchange in the storage unit Means for determining whether or not the address information of the exchange is stored, and means for broadcasting an address information transmission request to obtain the address information of the exchange when the judgment means determines that the address information of the exchange is not stored And receiving the address information of the exchange transmitted from the exchange after the address information transmission request is broadcast, and receiving the information stored in the storage unit; and the determination means stores the address information of the exchange When it is determined that the address information of the exchange is extracted from the storage unit, the address information is sent to the destination. It is characterized in that it comprises means for requesting registration of the device.

  In the exchange system of the present invention, even when a telephone connected to the first network is installed in a second network with a different subnet, the address information of the exchange 5 is first broadcasted on the first network. Obtaining provisional registration allows the IP telephone to perform main registration to the exchange connected to the first network based on the obtained address information of the exchange in the second network.

  Therefore, even when the telephone and the exchange are connected to networks in different subnets, it is possible to provide a highly convenient exchange system by easily setting the address information of each.

  According to a first aspect of the present application, when the determination means determines that the address information of the exchange is not stored, means for broadcasting an address information transmission request to obtain the address information of the exchange, After the broadcast, the address information of the exchange transmitted from the exchange is received, the receiving means for storing the information in the storage section, and the address of the exchange from the storage section when the judging means determines that the address information of the exchange is stored. It is characterized by having means for taking out information and requesting registration of its own device with the address information as a destination, so that the IP telephone acquires the address of the exchange before making a registration request to the exchange. Therefore, once the address of the exchange is obtained from the subnet to which the exchange is connected, the IP phone can be connected to another service. Be connected to the net, it can be registered to the exchange by the successful registration request to the exchange.

  The second invention of the present application is characterized in that the MAC address of its own device is stored in the storage unit, and the MAC address is included in the address information transmission request, and the unique MAC address is transmitted to the exchange. Therefore, it is possible to notify the exchange side from which IP telephone the address information transmission request is made.

  A third invention of the present application is characterized in that the receiving means receives a telephone number transmitted together with address information from the exchange, and displays the telephone number on the display means. The number can be easily confirmed. In particular, when obtaining the address information of the exchange, it is possible to receive a telephone number assignment from the exchange. Therefore, if the exchange side assigns telephone numbers from the lowest number in the order in which the exchange address information was obtained, By connecting IP telephones to the telephone numbers, telephone numbers can be assigned in order.

  The fourth invention of the present application is characterized in that the address information of the exchange is an IP address, and this IP telephone can use a network using Ethernet (registered trademark) or the like.

  According to a fifth aspect of the present invention, there is provided a means for erasing the address information of the exchange stored in the storage unit, which is stored in the storage unit even after being registered in the exchange. By deleting the address information of the exchange, it can be registered in another exchange.

  A sixth invention of the present application is an exchange capable of communicating with an IP telephone, storing an interface for communicating with the IP telephone, IP telephone address information and a telephone number, and storing the address of the own apparatus. When receiving a transmission request for the exchange address information from the storage unit for storing information and the IP telephone, upon receiving a registration request from the IP telephone for retrieving the address information from the storage unit and transmitting the address information to the IP telephone The IP telephone address information and the telephone number included in the registration request are stored in the storage unit in association with each other, and the switch has a means for registering the IP telephone. Even before you do this, you can send the switch's address to the IP phone on demand, so connect to the switch. If the IP phone obtains the address of the exchange once in the subnet to which the exchange is connected, even if the IP telephone is connected to another subnet, it can make a registration request to the exchange normally and register it in the exchange. become able to.

  The seventh invention of the present application is characterized by having means for storing the MAC address of the IP telephone transmitted from the IP telephone in the storage unit together with the address information and telephone number of the IP telephone, and the unique number Therefore, it is possible to identify from which IP telephone the address information transmission request or registration request is made on the exchange side.

  The eighth invention of the present application is characterized by comprising means for erasing the address information of the IP telephone stored in the storage unit, once the address information of the IP telephone is registered in the exchange. In addition, the address information of the IP telephone stored in the storage unit can be erased.

  The ninth invention of the present application is characterized in that the address information of the IP telephone is an IP address, and this exchange can use a network using Ethernet (registered trademark) or the like.

  According to a tenth aspect of the present invention, an exchange connected to the first network is connected to the first network directly or via a network relay device connected to a second network having a different subnet from the first network. In an exchange system having a possible IP telephone, the IP telephone is transmitted from the exchange in response to the inquiry, storage means for storing the address information of the exchange, means for inquiring the address information of the exchange by broadcast to the first network, and Receiving the address information of the exchange and storing it in the storage means; obtaining the address information of the exchange from the storage means; connecting to the exchange via the second network based on the obtained address information; Means for requesting registration, and the exchange receives address information from the IP telephone. In response to the inquiry, the MAC address of the IP telephone is stored in the storage means of the exchange, the address information of the exchange is notified, and the address information of the IP telephone is set to the MAC address in response to a registration request from the IP telephone. And storing the information in the storage means of the exchange in association with the first telephone network, which is the same network as the exchange in advance, and acquiring the address information of the exchange by broadcasting, The first network is connected to a second network having a different subnet, and based on the address information of the exchange, a notification requesting assignment of IP telephone address information is transmitted to the exchange. As a result, even when the exchange and the IP telephone are connected to networks in different subnets, the respective settings can be easily performed without erroneous operation.

According to an eleventh aspect of the present invention, the exchange has means for assigning a telephone number of the IP telephone in response to an inquiry about address information from the IP telephone, and means for notifying the assigned telephone number to the IP telephone. The telephone is characterized by comprising means for receiving the assigned telephone number notified from the exchange and display means for displaying the received telephone number, and is stored in the storage means in the IP telephone. Since the display means for displaying the telephone number of the IP telephone is provided, the telephone number assigned by the exchange can be easily confirmed.

  A twelfth invention of the present application is characterized in that the IP telephone is provided with means for erasing the address information of the exchange stored in the storage means. Since means for erasing the address information is provided, even when the IP telephone is transferred again, the IP telephone and the exchange can be reset by erasing the address information of the exchange.

  The thirteenth invention of the present application is characterized in that the exchange is provided with means for erasing the IP telephone address information stored in the storage means, and once the IP telephone address information is registered in the exchange. Even so, the address information of the IP telephone stored in the storage unit can be deleted.

  The fourteenth invention of the present application is connected to the exchange connected to the first network and directly to the first network or via a network relay device connected to the second network having a different subnet from the first network. In a registration method of an exchange system having a possible IP phone, the step of connecting an IP phone to the first network, the step of the IP phone inquiring of the address information of the exchange by broadcast to the first network, A step of notifying the address information of the exchange in response to the inquiry of the address information, a step of the IP telephone receiving the address information of the exchange transmitted from the exchange and storing it in the storage means, and the IP telephone in the second network And the IP telephone is connected from the storage means. And acquiring the address information of the machine, connecting to the exchange via the second network based on the obtained address information, and requesting registration of the telephone. After connecting the IP telephone to the first network, which is the same network, and acquiring the address information of the exchange by broadcast, connect to the second network having a subnet different from that of the first network, and based on the address information of the exchange A notification requesting registration of the IP telephone is transmitted to the exchange. As a result, even when the exchange and the IP telephone are connected to networks in different subnets, the respective settings can be easily performed without erroneous operation.

(Embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1A and 1B are diagrams for explaining the configuration of an exchange system according to an embodiment of the present invention. FIG. 1A is a diagram showing a state in which an IP telephone is connected to a first network, and FIG. It is the figure connected to the network of 2. FIG. As shown in FIG. 1A, in a switching system 1 according to an embodiment of the present invention, a first network 2 and a second network 3 are connected by a router 4 that is a network relay device.

  To the first network 2, an IP telephone 6 (6 a, 6 b), a DHCP (Dynamic Host Configuration Protocol) server 9, and a plurality of IP telephones (not shown) are connected to an exchange 5 via a LAN switch 7. ing. The exchange 5 is connected to the second network 3 and other networks (not shown) via a router 4.

  The LAN switch 7 has a bridge function and is a switching hub that determines a data destination by looking at a destination MAC address that is a part of data in the data link layer. The LAN switch 7 may be a repeater hub. The IP telephone 6 is connected to the exchange 5 via the LAN switch 7, but may be directly connected if the number of LAN ports of the exchange 5 is not insufficient.

The second network 3 includes an IP telephone and DHCP (not shown) accommodated in the exchange 5.
A server 10 is connected to the LAN switch 8. The LAN switch 8 is a switching hub having the same function as the LAN switch 7, but may be a repeater hub as well.

  The first network 2 and the second network 3 have different subnets. That is, broadcast packets reach only within the same network. That is, a broadcast packet from a device connected to the first network 2 reaches only the first network 2 and does not reach the second network 3. A broadcast packet from a device connected to the second network 3 reaches only a range within the second network 3.

  This is because the router 4 does not pass this broadcast packet. Each device connected to the first network 2 or the second network 3 communicates with a device connected to another network in a different subnet by designating an IP address that is address information of the communication partner. To do.

  Next, the configuration of the IP telephone 6 will be described with reference to FIGS. FIG. 2 is a diagram for explaining the configuration of an IP telephone which is an example of a telephone used in the exchange system of FIG. FIG. 3 is a diagram for explaining the configuration of the telephone data control unit of FIG. As shown in FIG. 2, the IP telephone 6 includes a LAN-I / F unit 21, an IP packet processing unit 22, a voice encoding unit 23, a microphone 24, a speaker 25, an input unit 26, and a display unit. 27, a telephone data storage unit 28, and a telephone data control unit 29.

  The LAN-I / F unit 21 is an interface that performs electrical conversion such as 100Base-T or 100Base-Tx in order to connect to the LAN switch 7 or the exchange 5. The IP packet processing unit 22 sends the digitized voice data as an IP packet to the LAN-I / F unit 21. Further, the packet received from the LAN-I / F unit 21 is converted into voice data and notified to the voice encoding unit 23. In addition, data from the telephone data control unit 29 is transmitted as an IP packet via the LAN-I / F unit 21.

  The voice encoding unit 23 converts an analog voice signal input from the microphone 24 into digital data and notifies the IP packet processing unit 22 of the converted digital data. The voice encoding unit 23 decodes the voice data received from the IP packet processing unit 22 and sends an analog signal to the speaker 25. The input unit 26 notifies a signal input by pressing a dial button (not shown) to the telephone data control unit 29 and also notifies the display unit 27. The display unit 27 can be a liquid crystal display panel or the like, and displays the destination telephone number input by the input unit 26. Further, it has a function of displaying the telephone number assigned by the exchange 5.

  The telephone data storage unit 28 is a storage unit that stores an IP address that is address information of the exchange 5, a telephone number received from the exchange 5, a MAC address of the own apparatus, and the like. It also has a function of storing a telephone number assigned by the exchange 5.

  Here, the configuration of the telephone data control unit 29 will be described with reference to FIG. The telephone data control unit 29 includes a transmission control unit 29a, an exchange address request unit 29b, an exchange address reception unit 29c, a telephone address request unit 29d, a telephone address reception unit 29e, and an exchange address deletion unit 29f. Yes. Based on the telephone number input from the input unit 26, the transmission control unit 29a makes a call to the switch 5 having the IP address stored in the telephone data storage unit 28 via the IP packet processing unit 22.

The exchange address request unit 29b is a means for inquiring about the IP address of the exchange 5 by broadcast when it is determined that the IP address which is the address information of the exchange 5 is not stored in the telephone data storage unit 28. At that time, the exchange address request unit 29b notifies the exchange 5 of the MAC address in order to determine which IP telephone 6 the exchange 5 inquires from.

  An IP packet for inquiring about the IP address of the exchange 5 is broadcast on the MAC frame. The MAC frame is added with the MAC address of the IP telephone 6 as a source MAC address, and the MAC address is notified by the MAC frame. However, the MAC address of the IP telephone 6 may be notified on the data portion of the IP packet.

  The fact that the IP address which is the address information of the exchange 5 is not stored in the telephone data storage unit 28 means that the IP address of the exchange 5 is not set when the IP telephone 6 is newly connected to the exchange 5. Since the packet for inquiring about the IP address of the exchange 5 from the exchange address request unit 29b is transmitted by broadcast, it is performed with the IP telephone 6 connected to the first network 2.

  The exchange address receiving unit 29c receives the IP address of the exchange 5 transmitted from the exchange 5 in response to the inquiry transmitted from the exchange address requesting unit 29b via the IP packet processing unit 22, and stores it in the telephone data storage unit 28. Means for storing.

  The telephone address request unit 29d is means for requesting the DHCP server 9 for an IP address by a DHCP procedure. That is, the telephone address request unit 29d broadcasts a DHCP discovery packet using the UDP protocol via the IP packet processing unit 22. If there is a response from the DHCP server 9, an IP address assignment request packet is transmitted to the DHCP server 9.

  The telephone address receiving unit 29e is means for storing, in the telephone data storage unit 28, the IP address of the IP telephone 6 transmitted from the DHCP server 9 in response to the IP address allocation request of the IP telephone 6 by the telephone address requesting unit 29d. . Further, it has a function of storing the telephone number of the assigned IP telephone 6 from the exchange 5 in the telephone data storage unit 28.

  The exchange address erasure unit 29f is means for erasing the IP address and telephone number of the exchange 5 stored in the telephone data storage unit 28. When the IP telephone 6 is installed from the first network 2 or the second network 3 to another network, for example, an IP address and a telephone number of the exchange 5 are erased by the exchange address erasure unit 29f, thereby creating a new one. The IP address and telephone number of the IP telephone 6 at the relocation destination can be assigned.

  Next, the configuration of the exchange 5 of the exchange system according to the embodiment of the present invention will be described with reference to FIG. FIG. 4 is a diagram for explaining the configuration of the exchange used in the exchange system of FIG.

  The exchange 5 includes a LAN-I / F unit 11, an uplink I / F unit 12, a switch unit 13, a storage unit 14, and a control unit 15. The LAN-I / F unit 11 is an interface that performs electrical conversion such as 100Base-T and 100Base-Tx in order to connect to lower devices such as the LAN switch 7 and the IP telephone 6.

The uplink I / F unit 12 is an interface for electrical conversion such as 100Base-T and 100Base-Tx in order to connect to a host device such as the router 4. The switch unit 13 determines the MAC address of the packet input from the LAN-I / F unit 11 or the uplink I / F unit 12, and the corresponding LAN-I / F unit 11 or the uplink I / F unit 12. L2 switch that outputs a packet to

  The storage unit 14 includes an IP telephone management table 14a and an exchange address storage unit 14b. The IP telephone management table 14a is a storage unit that stores the IP address, MAC address, telephone number, and the like of the IP telephone 6 in association with each other. The exchange address storage unit 14 b is a storage unit that stores the IP address of the exchange 5.

  The control unit 15 includes an exchange address notification unit 15a, a telephone number assignment unit 15b, an IP telephone registration management unit 15c, and an IP telephone management table deletion unit 15d, and controls the entire exchange 5. The exchange address notifying unit 15a retrieves the IP address of the exchange 5 from the exchange address storage unit 14b in response to the inquiry about the IP address of the exchange 5 from the IP telephone 6, and together with the telephone number assigned by the telephone number assigning unit 15b described later. It is a means to notify.

  The telephone number assigning unit 15 b assigns a new telephone number to the telephone number of the IP telephone 6 newly accommodated in the exchange 5 by excluding the already assigned telephone number from the telephone numbers assigned to the exchange 5. Note that the telephone numbers may be assigned in ascending order, except for the telephone numbers already assigned among the telephone numbers assigned to the exchange 5. In this way, since the telephone numbers can be assigned in order by connecting the IP telephones 6 in order, when the telephone numbers are assigned to a plurality of IP telephones, the IP telephones 6 are connected in the order of the telephone numbers to be assigned. Thus, a telephone number can be easily assigned to the IP telephone 6.

  The IP telephone registration management unit 15c stores the assigned telephone number of the IP telephone 6 and the received MAC address, IP address, etc. of the IP telephone 6 in the IP telephone management table 14a in association with each other. The IP telephone management table erasure unit 15d is means for erasing the IP telephone management table 14a by associating the MAC address, IP address, and the like of the IP telephone 6 with each other. Information can be deleted. This IP telephone management table deleting means 15d can be controlled by an operation from a maintenance terminal connected to the exchange 5 via the LAN-I / F unit 11 or via an interface such as RS-232C.

  Next, the operation of the exchange system according to the embodiment of the present invention will be described. FIG. 5 is a flowchart for explaining the operation of the telephone set used in the exchange system of FIG. FIG. 6 is a flowchart for explaining the operation of the exchange shown in FIG.

  In the present embodiment, as shown in FIGS. 1A and 1B, an IP telephone 6b is installed in a second network 3 having a subnet different from that of the first network 2 to which the exchange 5 is connected. An example will be described in which an IP telephone is registered in the exchange 5.

  First, the operation of the IP telephone 6b will be described with reference to FIGS. As shown in FIG. 1A, by connecting the IP telephone 6b to the LAN switch 7 in advance, it is possible to communicate with the exchange 5. It is assumed that the IP address and telephone number of the exchange 5 are not stored in the telephone data storage unit 28 in this connection state. That is, the IP telephone 6b is in a state where the IP address of the exchange 5 and the telephone number of the IP telephone 6b stored in the telephone data storage unit 28 have been previously erased by the exchange address erasing unit 29f or the like.

As shown in FIG. 5, the IP telephone 6b is first turned on or reset as an initial state (S100). The exchange address request unit 29b of the telephone data control unit 29 refers to the telephone data storage unit 28 and determines whether or not the IP address of the exchange 5 has been acquired (S110).

  If it is in the unacquired state in S110, the process proceeds to S120. In this case, as described above, the contents of the telephone data storage unit 28 are erased in advance by the exchange address erasing unit 29f or the like, and the process proceeds to S120.

  The exchange address request unit 29b transmits an inquiry about the IP address, which is address information of the exchange 5, to the first network 2 as a packet including the MAC address of the IP telephone 6b by broadcasting (S120).

  Since the IP telephone 6b and the exchange 5 are respectively connected to the same first network 2 and have the same subnet, it is a range where broadcast packets reach. Accordingly, the IP telephone 6b can transmit an IP address inquiry to the exchange 5 by broadcasting the packet even if the IP address of the exchange 5 is not acquired.

  The exchange address receiving unit 29c receives the IP address of the exchange 5 and the telephone number assigned to the IP phone 6b included in the packet responding to the broadcast packet including the MAC address of the IP phone 6b from the exchange 5, and the IP packet processing unit 22 Is stored in the telephone data storage unit 28 (S130).

  The display unit 27 of the IP telephone 6b displays the telephone number received from the exchange address receiving unit 29c (S140). By this display, it is possible to indicate to the operator the completion of temporary registration acquired from the exchange 5 by the IP address of the exchange 5. From this display, the operator can easily confirm the telephone number of the IP telephone 6b (S150).

  Next, as shown in FIG. 1B, the IP telephone 6b is connected to the LAN switch 8 of the second network 3 where it is installed. In this state, the IP telephone 6b is powered on as shown in FIG. 5 (S100).

  Then, the exchange address request unit 29b refers to the telephone data storage unit 28 to determine whether or not the IP address of the exchange 5 has been acquired. However, since the IP address of the exchange 5 has already been acquired, the process proceeds to S160. Transition (S110).

  The telephone address request unit 29d of the IP telephone 6b determines whether or not the IP address of the IP telephone 6b is stored in the telephone data storage unit 28. This determination makes it possible to confirm whether or not the IP address of the IP telephone 6b is assigned from the DHCP server (S160).

  In S160, the telephone address request unit 29d determines that the IP address of the IP telephone 6b has not yet been assigned since the IP address of the IP telephone 6b is not stored in the telephone data storage unit 28. Based on this determination, the telephone address request unit 29d requests the DHCP server 10 to assign an IP address of the IP telephone 6b by the DHCP procedure (S170).

  When the IP address of the IP telephone 6b is already assigned in S160, and when the IP address of the IP telephone 6b is assigned in the process of S170, each of the IP address, telephone number, and MAC address of the IP telephone 6b Information is transmitted to the exchange 5 (S180).

  By transmitting the information of the IP telephone 6b, the exchange 5 registers the IP address, MAC address, and telephone number of the IP telephone 6b in association with each other.

  Then, the exchange 5 notifies the IP telephone 6b that the registration is completed (S190). By this notification, the IP telephone 6b can recognize that the IP telephone 6b is registered in the exchange 5 (S200).

  Next, the operation of the exchange 5 will be described with reference to FIGS. First, the exchange 5 is in a normal operating state. That is, it is in a state where control such as a call from the IP telephone 6a and an incoming call to the IP telephone 6a is performed (S210). In the connection state shown in FIG. 1A, when the IP telephone 6b is turned on while the IP telephone 6b is connected to the exchange 5 via the LAN switch 7, the IP telephone 6b is connected to the IP of the exchange 5. Broadcast a packet requesting an address. This is a packet transmitted from the IP telephone 6b in the process of S120 of FIG.

  As shown in FIG. 6, the control unit 17 of the exchange 5 that has received the broadcast packet analyzes the packet (S220). As a result, when it is not an inquiry about the IP address of the exchange 5 from the IP telephone 6b or a notification of the IP address or the like from the IP telephone 6b, a process corresponding to the received packet is performed as a packet requesting other processes. (S300).

  In S220, if the received packet is a request for temporary registration that is an inquiry request for the IP address of the exchange 5 from the IP telephone 6b, is the MAC address included in the received packet already registered in the IP telephone management table 14a? The IP telephone registration management unit 15c determines whether or not (S230).

  If it is determined in S230 that the MAC address of the IP telephone 6b has already been registered in the IP telephone management table 14a, the IP telephone 6b is inquired again about the IP address of the exchange 5 even though the IP telephone 6b has already been registered in the exchange 5. Since the request has been transmitted, the IP telephone registration management unit 15c transmits a notification to the effect that the temporary registration is impossible from the exchange 5 to the IP telephone 6b, completes the registration process, and returns to normal operation (S240).

  If it is determined in S230 that the MAC address of the IP telephone 6b is not registered in the IP telephone management table 14a, the telephone number assigning unit 15b assigns the telephone number of the IP telephone 6b and corresponds to the MAC address of the IP telephone 6b. In addition, the telephone number is stored in the IP telephone management table 14a (S250).

  In response to an inquiry about the IP address of the exchange 5 from the IP telephone 6b, the exchange address notification unit 15a extracts the IP address of the exchange 5 from the exchange address storage unit 14b and notifies it together with the telephone number assigned by the telephone number assignment unit 15b. (S260). When the process of S260 is completed, the IP telephone 6b connected to the first network 2 enters the state of S150 shown in FIG.

  Next, the IP telephone 6 b is connected to the second network 3 in the connection state shown in FIG. In step S170 shown in FIG. 5, the IP telephone 6b transmits a notification requesting the IP address assignment of the IP telephone 6b to the DHCP server 10 by the DHCP procedure, and receives the IP address assignment from the DHCP server 10. Thereafter, the IP telephone 6b takes out the information (IP address, MAC address, and telephone number) of the own apparatus from the telephone data storage unit 28 and transmits it to the IP address of the exchange 5.

  The exchange 5 that has received this information from the IP telephone 6b determines in S220 that it is a registration request, and proceeds to S270. The IP telephone registration management unit 15c refers to the IP telephone management table 14a and determines whether or not the requested MAC address of the IP telephone 6b has been registered (S270). This is to prevent the main registration for the IP telephone 6b that is not provisionally registered by the exchange 5.

  In S270, when the MAC address of the IP telephone 6b is registered in the IP telephone management table 14a indicating that the provisional registration has already been completed, the IP telephone registration management unit 15c sets the IP address received from the IP telephone 6b. Then, it is registered in the IP telephone management table 14a in correspondence with the registered MAC address (S290).

  If the MAC address of the IP telephone 6b is not registered in the IP telephone management table 14a in S270, a notification that registration is not possible is transmitted to the IP telephone 6b (S280).

  In this way, even when the IP telephone 6b is installed in the second network 3 having a different subnet from the first network 2 to which the exchange 5 is connected, the IP address of the exchange 5 in the first network 2 first. Can be easily registered by connecting to the second network 3 that is the installation destination, and registering the IP address of the IP telephone 6b.

  The present invention provides an exchange system in which an exchange and a telephone accommodated in the exchange are connected by a LAN because the address information and the like can be easily set even when the telephone and the exchange are connected to different subnet networks. It is suitable for the registration method.

The figure explaining the structure of the switching system which concerns on embodiment of this invention The figure explaining the structure of the IP telephone which is an example of the telephone used for the switching system of FIG. The figure explaining the structure of the telephone data control part of the telephone set of FIG. The figure explaining the structure of the exchange used for the exchange system of FIG. The flowchart explaining operation | movement of the telephone set used for the switching system of FIG. Flowchart for explaining the operation of the exchange of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch system 2 1st network 3 2nd network 4 Router 5 Switch 6,6a, 6b IP telephone 7,8 LAN switch 9,10 DHCP server 11 LAN-I / F part 12 Uplink I / F part 13 Switch Unit 14 storage unit 14a IP telephone management table 14b exchange address storage unit 15 control unit 15a exchange address notification unit 15b telephone number assignment unit 15c IP telephone registration management unit 15d IP telephone management table deletion unit 21 LAN-I / F unit 22 IP packet Processing unit 23 Voice coding unit 24 Microphone 25 Speaker 26 Input unit 27 Display unit 28 Telephone data storage unit 29 Telephone data control unit 29a Transmission control unit 29b Exchanger address requesting unit 29c Exchanger address receiving unit 29d Telephone address requesting unit 29e Electricity Machine address receiving section 29f exchange address erasing unit

Claims (14)

An IP phone that can communicate with an exchange,
An interface for communicating with the exchange;
A storage unit for storing address information of the exchange;
Determining means for determining whether or not the address information of the switch is stored in the storage unit; and when the determining means determines that the address information of the switch is not stored, to acquire the address information of the switch Means for broadcasting an address information transmission request to
Receiving means for receiving the address information of the exchange transmitted from the exchange after the address information transmission request is broadcast, and storing it in the storage unit;
When the determination means determines that the address information of the exchange is stored, the address information of the exchange is extracted from the storage unit, and the address information is used as a destination to request registration of the own apparatus. IP phone. Storing the MAC address of the own device in the storage unit;
The IP telephone according to claim 1, wherein the MAC address is included in the address information transmission request. The IP telephone according to claim 1 or 2, wherein the receiving means receives a telephone number transmitted together with address information from the exchange, and displays the telephone number on a display means. 4. The IP telephone according to claim 1, wherein the address information of the exchange is an IP address. 5. The IP telephone set according to claim 1, further comprising means for erasing address information of the exchange stored in the storage unit. An exchange capable of communicating with an IP telephone,
An interface for communicating with the IP telephone;
A storage unit that stores the address information and the telephone number of the IP telephone in association with each other, and stores the address information of the own device;
Means for receiving the exchange address information transmission request from the IP telephone, retrieving the address information from the storage unit, and transmitting the address information to the IP telephone;
An exchange comprising: a means for registering the IP telephone by storing the IP telephone address information and telephone number included in the registration request in association with each other when the registration request is received from the IP telephone. 7. The exchange according to claim 6, further comprising means for storing a MAC address of the IP telephone transmitted from the IP telephone in the storage unit together with address information and a telephone number of the IP telephone. 8. The exchange according to claim 6, further comprising means for erasing address information of the IP telephone stored in the storage unit. 9. The exchange according to claim 6, wherein the address information of the IP telephone is an IP address. An exchange connected to a first network, and an IP telephone connectable to the first network directly or via a network relay device connected to a second network having a different subnet from the first network In an exchange system having
The IP telephone has storage means for storing address information of the exchange;
Means for inquiring address information of the exchange by broadcast to the first network;
Means for receiving address information of the exchange transmitted from the exchange in response to the inquiry and storing it in the storage means;
Obtaining address information of the exchange from the storage means, connecting to the exchange via the second network based on the obtained address information, and requesting registration of the IP telephone,
In response to the address information inquiry from the IP telephone, the exchange stores the MAC address of the IP telephone in the storage means of the exchange, and means for notifying the address information of the exchange;
An exchange system comprising: means for storing address information of the IP telephone in association with the MAC address in a storage means of the exchange in response to a registration request from the IP telephone. The exchange has means for assigning a telephone number of the IP telephone in response to an inquiry of address information from the IP telephone, and means for notifying the telephone number of the assigned telephone number;
11. The exchange system according to claim 10, wherein the IP telephone comprises means for receiving the assigned telephone number notified from the exchange and display means for displaying the received telephone number. 12. The exchange system according to claim 10, wherein the IP telephone is provided with means for erasing address information of the exchange stored in the storage means. The exchange system according to any one of claims 10 to 12, wherein the exchange includes means for deleting address information of the IP telephone stored in the storage means. An exchange connected to a first network, and an IP telephone connectable to the first network directly or via a network relay device connected to a second network having a subnet different from that of the first network. A method of registering an exchange system comprising: connecting the IP telephone to the first network;
The IP telephone inquires about the address information of the exchange by broadcasting to the first network;
The exchange notifying address information of the exchange in response to an inquiry of the address information;
The IP telephone receiving the address information of the exchange transmitted from the exchange and storing it in the storage means;
Connecting the IP telephone to the second network;
The IP telephone acquiring the address information of the exchange from the storage means, connecting to the exchange via the second network based on the acquired address information, and requesting registration of the IP telephone. An exchange system registration method characterized by the above.

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