JP2005340885A - Ip telephone, exchange, exchange system, and its registration method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP telephone, an exchange, an exchange system, and its registration method by which each address information of the IP telephone and the exchange can be easily set even if the IP telephone and the exchange are connected to different sub-networks. <P>SOLUTION: Registration is once executed by firstly connecting the IP telephone 6b via a first network 2, and acquiring the IP address of the exchange 5 after requesting the IP address with broadcasting and executing a temporary registration by the acquisition of an MAC address of the IP telephone 6b included in the request packet by the exchange 5, even when the IP telephone 6b is installed to a network 3 of the sub-network different from the first network 2 to which the exchange 5 is connected. Next, the IP telephone 6b is relocated to the second network 3 being the installation destination. The registration of the IP address of the IP telephone 6b is executed again to the IP address of the exchange 5 with unicasting. Consequently, the IP telephone 6b can be easily registered to the exchange 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

  As telephones used in offices and the like, IP telephones using a network such as the Internet have become widespread. 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 telephone, it is necessary to make various settings on both the IP telephone side and the exchange side. For example, since an IP telephone and an exchange are connected via a LAN, it is necessary to assign an IP address. This IP address is centrally managed on the exchange side.

By the way, an exchange system in which the exchange dynamically assigns the IP address to the IP telephone is known (for example, see Patent Document 1). In this exchange system (Patent Document 1), an exchange receives a broadcast packet transmitted from an IP telephone into the LAN, and the exchange dynamically assigns an IP address to the IP telephone.
JP 2003-273899 A

  As described above, 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 phone are connected to networks in different subnets and these networks are connected via a network relay device such as a router, the broadcast packet transmitted from the exchange or the IP phone is transmitted to the network relay device. Address information cannot be assigned to the telephone. For example, as is often the case, an IP phone connected to a network on the same subnet as the exchange moves with the user due to the transfer of the user who used the IP phone, and the network changes to a network on a different subnet. For example, when installed, the exchange cannot assign address information.

  Thus, when the exchange and the IP telephone are connected to networks in different subnets, the IP address assigned to the IP telephone as address information for the exchange, the MAC (Media Access Control) address of the IP telephone, the telephone number, and the like It is necessary to set address information such as the IP address of the exchange one by one for the IP telephone.

  By the way, since the IP address, MAC address, telephone number, etc. are all enumerated with alphanumeric characters, the setting work for the exchange and the IP phone requires the input of meaningless alphanumeric characters and may be set erroneously. .

  Therefore, the present invention provides an IP phone, an exchange, an exchange system, and a registration method thereof that can easily set address information of each IP phone and an exchange even when the IP phone and the exchange are connected to different subnet networks. With the goal.

  The present invention is an IP telephone that can communicate with an exchange, an interface for communicating with the exchange, a storage unit that can store the address information of the exchange, and the address information of the exchange stored in the storage unit And when the telephone data control unit determines that the address information of the exchange is not stored in the storage unit, a registration request is broadcasted to obtain the address information of the exchange. At the same time, when the telephone data control unit determines that the address information of the exchange is stored in the storage unit, the address information of the exchange is extracted from the storage unit, and the registration request of its own device is unicasted to the address information as a destination. When the registration request is broadcasted to the exchange address request section to be sent, it is sent from the exchange. Receives the address information of the exchange, is characterized in that a switch address receiving unit to be stored in the storage unit.

  According to the IP telephone, the exchange, the exchange system, and the registration method of the exchange system of the present invention, even when the IP telephone connected to the first network is installed in the second network of a different subnet, Registration is performed by acquiring the switch address information by broadcast in the first network, and then the IP telephone is connected to the first network based on the acquired switch address information in the second network. You can register again with the exchange. Note that when an IP telephone is moved between different subnets, the IP address of the IP telephone is different from the IP address used in the network before the movement, and it is necessary to register with the exchange again.

  In addition, since registration of IP telephones can be accepted only for exchanges set to registration mode ON, it is possible to select exchanges to be registered when a plurality of exchanges are arranged in the same network.

  Even when the IP telephone and the exchange are connected to networks in different subnets, the address information and the like can be easily set so that a highly convenient exchange system can be obtained.

  A first invention of the present application is an IP telephone that can communicate with an exchange, an interface for communicating with the exchange, a storage unit that can store address information of the exchange, and an address of the exchange in the storage unit A telephone data control unit that determines whether information is stored, and a registration request to obtain the address information of the exchange when the telephone data control unit determines that the address information of the exchange is not stored in the storage unit When the telephone data control unit determines that the address information of the exchange is stored in the storage unit, the address information of the exchange is extracted from the storage unit, and the registration request of the own device is sent to the address information as a destination. Switch address request part that transmits the unicast, and if the registration request is broadcast, An IP telephone having an exchange address receiving unit that receives address information of the exchange to be transmitted and stores it in a storage unit, and is connected across subnets even when the IP telephone is connected in the same subnet Even in such a case, the registration request can be normally made to the exchange and registered in the exchange.

  A second invention of the present application is an IP telephone according to the first invention, wherein the MAC address of the own device is stored in the storage unit, and the exchange address request unit transmits the registration request including the MAC address. In addition, since the MAC address, which is a unique number, can be transmitted to the exchange, the exchange side can be notified of the registration request from which IP telephone.

  The third invention of the present application is an invention dependent on the first or second invention, wherein the IP address of the own device is stored in the storage unit, and the exchange address requesting unit includes the IP address of the own device in the registration request. This IP telephone can use a network using Ethernet (registered trademark) or the like.

  A fourth invention of the present application is an invention dependent on any one of the first to third inventions, wherein the exchange address receiving unit receives a telephone number transmitted together with address information from the exchange, and a display unit is the telephone. This is an IP telephone that displays the number, and the telephone number assigned by the exchange 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, so 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 fifth invention of the present application is an invention subordinate to any one of the first to fourth inventions, and is an IP telephone in which the address information of the exchange is an IP address. This IP telephone is an Ethernet (registered trademark) or the like. You can use a network that uses.

  A sixth invention of the present application is an IP phone including the phone data erasure unit that is an invention dependent on any one of the first to fifth inventions and that erases the address information of the exchange stored in the storage unit, Even after it is registered in the exchange, it can be registered in another exchange by deleting the address information of the exchange stored in the storage unit.

  According to a seventh aspect of the present invention, there is an exchange capable of communicating with an IP telephone, and an interface for communicating with the IP telephone, information relating the address information and telephone number of the IP telephone, and registration processing are performed. An exchange storage unit that stores the mode information and the address information of the own device, a mode control unit that refers to the mode information to determine whether or not the own device performs registration processing of the IP phone, and a registration request from the IP phone When the mode control unit determines that the registration processing is not performed, the registration request is ignored. When the mode control unit determines that the registration processing is performed, The address information and the telephone number of the IP phone included in the registration request, and the exchange address notifying unit that sends the address information to the IP phone. And an IP phone registration management unit that performs IP phone registration processing and stores the same in the exchange storage unit, and the exchange handles the registration request from the IP phone only when the registration mode is ON. When a plurality of exchanges are installed, it is possible to select an exchange to be registered. In addition, once the IP telephone to be connected to the exchange obtains the IP address of the exchange in the network to which the exchange is connected, even if the IP telephone is connected to a different subnet, the exchange is normally requested to register again. And register with the exchange.

  The eighth invention of the present application is an invention dependent on the seventh invention, wherein the IP telephone registration management unit associates the IP telephone MAC address transmitted from the IP telephone together with the IP telephone address information and telephone number. Since the exchange is stored in the storage unit and the MAC address, which is a unique number, can be registered in the exchange, it is possible to identify from which IP telephone the registration request is made on the exchange side.

  The ninth invention of the present application is an invention dependent on the seventh or eighth invention, and is an exchange provided with an IP telephone management table erasure unit for erasing the IP telephone address information stored in the storage unit. Even after the IP telephone address information is registered in the exchange, the IP telephone address information stored in the storage unit can be deleted.

A tenth invention of the present application is an invention subordinate to any of the seventh to ninth inventions, wherein the IP telephone address information is an IP address, and the exchange is an Ethernet (registered trademark) or the like. The used network can be used.

  An eleventh invention of the present application is an invention subordinate to any of the seventh to tenth inventions, wherein the display unit is an exchange that displays mode information stored in the exchange storage unit, and is an IP telephone set Can easily confirm the registration mode.

  A twelfth invention of the present application includes a first network provided with an exchange, a network relay device connected to the first network, and a second network connected to the network relay device. 2 is an exchange system including an IP telephone that can be accommodated in the network of FIG. 2, and the IP telephone includes a storage unit that can store address information of the exchange, and a first unit when connected to the first network. Inquires about the address information of the exchange by broadcasting to the network and makes a registration request. When connected to the second network in a state where the address information of the exchange is stored, the address information of the IP telephone is sent to the exchange to request the registration. The exchange address requesting section that receives the inquiry and the exchange address information sent from the exchange in response to the inquiry. A switch address receiving unit for storing in the storage unit is provided, and when the switch receives a registration request from the IP telephone, a mode for determining whether or not to perform registration processing with reference to mode information in the switch storage unit IP telephone registration management in which the MAC address of the IP telephone and the address information are associated and stored in the exchange storage section in response to a registration request from the IP telephone when the control section determines that the mode control section performs the registration process And an exchange address notifying unit for notifying the IP telephone of the address information of the exchange when a registration request is made by broadcast, and the IP telephone is connected to the first network which is the same network as the exchange beforehand. Then, after obtaining the address information of the exchange by broadcasting, a subnet different from the first network Connected to the second network, based on the exchange of address information IP phone is stored, it transmits a notification for requesting registration of the IP telephone 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. In addition, it is possible to easily select an exchange for registering an IP telephone by setting registration mode information in the exchange.

  A thirteenth invention of the present application is an invention dependent on the twelfth invention, wherein the exchange is provided with a telephone number assigning section for assigning a telephone number of the IP telephone in response to a registration request from the IP telephone, and the exchange address The exchange system notifies the IP telephone of the telephone number assigned by the notification unit, in which the exchange address receiving unit receives the telephone number notified from the exchange, and the display unit displays the telephone number. Since the telephone is provided with display means for displaying the telephone number of the IP telephone stored in the storage means, the telephone number assigned from the exchange can be easily confirmed.

  The fourteenth invention of the present application is an invention dependent on the twelfth or thirteenth invention, wherein the IP telephone is provided with a telephone data erasure unit for erasing the address information of the exchange stored in the storage unit. Since the IP telephone is provided with means for erasing the address information of the exchange stored in the storage means, the IP telephone and the exchange can be deleted by erasing the address information of the exchange even when the IP telephone is transferred again. Can be reset.

  A fifteenth invention of the present application is an invention dependent on any one of the twelfth to fourteenth inventions, wherein the exchange includes an IP telephone management table erasure unit for erasing address information of the IP telephone stored in the exchange storage unit The IP phone address information stored in the storage means can be erased even after the IP phone address information is once registered in the exchange.

  The sixteenth invention of the present application is an invention subordinate to any of the twelfth to fifteenth inventions, wherein the display unit displays mode information stored in the exchange storage unit, and the current IP telephone registration The mode can be easily confirmed.

  According to a seventeenth aspect of the present invention, the step of connecting the IP telephone to the first network, the step of the IP telephone broadcasting to the first network, inquiring and requesting the address information of the exchange, and the exchange of the address information The step of receiving the MAC address transmitted from the IP telephone in response to the inquiry and storing it in the exchange storage unit, and notifying the address information of the exchange, and the IP telephone receiving the address information of the exchange transmitted from the exchange and the storage unit Storing in the network, connecting the IP telephone to the second network, and the IP telephone obtaining the address information of the exchange from the storage unit, and the exchange via the second network based on the obtained address information. An exchange system comprising the steps of: In this method, the IP telephone is connected in advance to the first network, which is the same network as the switch, and the address information of the switch is obtained by broadcast, and then connected to the second network on a different subnet from the first network. Then, 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. In addition, when the IP phone is connected in the same network as the exchange and the steps from requesting registration to the step of storing the address information received by the exchange are completed, the IP phone must be connected to the second network. In addition, an IP telephone can be used in the first network.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining network connection of an exchange system according to Embodiment 1 of the present invention. FIG. 1 (a) is an explanatory diagram when an IP telephone is connected to a first network, and FIG. ) Is an explanatory diagram when the IP telephone in FIG. 1A is connected to the second network.

  In the exchange system 1 according to Embodiment 1 of the present invention, as shown in FIG. 1A, a first network 2 and a second network 3 are connected by a router 4 that is a network relay device. The first network 2 is provided with an exchange 5 and a DHCP (Dynamic Host Configuration Protocol) server 9, and an IP telephone 6 (6 a, 6 b) and a plurality of IP telephones 6 (not shown) are connected via a LAN switch 7. Connected. The exchange 5 is connected to the second network 3 and other networks (not shown) via a router 4.

  Here, the LAN switch 7 has a bridging 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. However, if the number of LAN ports of the exchange 5 is not short, it can be directly connected.

  In the second network 3, an IP telephone 6 (not shown) and a DHCP server 10 accommodated in the exchange 5 of the first network 2 are connected to the LAN switch 8 via the router 4. The LAN switch 8 is a switching hub having the same function as the LAN switch 7 described above, but can also be a repeater hub.

FIG. 1B shows a state where the IP telephone 6 b is detached from the LAN switch 7 of the first network 2, moved into the second network 3, and connected to the LAN switch 8.

  By the way, the first network 2 and the second network 3 are different subnets. That is, the broadcasted packet reaches only within the same network range. That is, a broadcast packet from a device connected to the first network 2 can reach only the first network 2 and cannot reach the second network 3. Similarly, a broadcast packet from a device connected to the second network 3 reaches only a range in 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. 2 is an explanatory diagram of the configuration of the IP telephone of FIG. 1, and FIG. 3 is an explanatory diagram of the configuration of the telephone data control unit of the IP telephone of FIG.

  As illustrated 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. The telephone data storage unit 28 (the storage unit of the present invention) and the telephone data control unit 29 are provided.

  The LAN I / F unit 21 is an interface that performs electrical conversion such as 10Base-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 to the LAN I / F unit 21 as an IP packet. In addition, the packet received from the LAN I / F unit 21 is converted into audio data and notified to the audio 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 transmits the digital data to the IP packet processing unit 22. 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 transmits a signal input by pressing a dial button (not shown) to the telephone data control unit 29 and also to the display unit 27.

  The display unit 27 can use a liquid crystal display panel or the like, and displays a destination telephone number or the like input by the input unit 26. Further, it has a function of displaying the telephone number assigned by the exchange 5, the IP address of its own device, the MAC address, and the IP address of the exchange 5. The telephone data storage unit 28 is a storage unit that stores an IP address, which is address information of the exchange 5, a MAC address, an IP address, and the like of the own device. It also has a function of storing a telephone number assigned by the exchange 5.

  Here, the detailed configuration of the telephone data control unit 29 will be described with reference to FIG. As shown in FIG. 3, the telephone data control unit 29 includes an outgoing / incoming 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 telephone data. And an erasing unit 29f. Here, each of these units constituting the telephone data control unit 29 is realized by loading a program into a processor, and is a unit as a function realizing unit.

  Based on the telephone number input from the input unit 26, the outgoing / incoming control unit 29a makes a call to the exchange 5 having the IP address stored in the telephone data storage unit 28 via the IP packet processing unit 22. Do. Incoming calls from the exchange 5 are received via the IP packet processing unit 22.

  When it is determined that the address information of the exchange 5 is not set and the IP address of the exchange 5 is not stored in the telephone data storage unit 28, the exchange address request unit 29b inquires about the IP address of the exchange 5 by broadcast. The state where the address information is not set is a state where the IP address which is the address information of the exchange 5 is not stored in the telephone data storage unit 28, such as when the IP telephone 6 is newly connected to the exchange 5. is there. At this time, the exchange address requesting unit 29b notifies the exchange 5 of the MAC address in order to determine which IP telephone 6 the exchange 5 is inquiring 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 the source MAC address, and the MAC address is notified by the MAC frame. Instead of the MAC frame, the MAC address of the IP telephone 6 may be notified on the data portion of the IP packet. Since the packet (registration request) for inquiring 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. Store. In addition, the telephone address request unit 29d requests 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, an IP address assignment application packet is transmitted to the DHCP server 9. Further, the telephone address receiving unit 29e stores the IP address of the IP telephone 6 transmitted from the DHCP server 9 in response to the IP address assignment request of the IP telephone 6 by the telephone address requesting unit 29d in the telephone data storage unit 28. The telephone number of the assigned IP telephone 6 from the exchange 5 is also stored in the telephone data storage unit 28.

  The telephone data deletion unit 29f deletes the IP address of the exchange 5, the IP address of the IP telephone 6, and the telephone number stored in the telephone data storage unit 28. For example, when the IP telephone 6 is once registered in the exchange 5 and then moved from the first network 2 or the second network 3 to another network, the telephone data erasure unit 29f uses the IP address of the exchange 5, the IP telephone 6 By erasing the IP address and telephone number, it is possible to assign the IP address and telephone number of the IP telephone 6 at the new transfer destination. Further, it inquires about address information of the exchange 5 of the new registration partner.

  Next, the detailed structure of the exchange 5 of the exchange system 1 in Embodiment 1 of this invention is demonstrated based on FIG. FIG. 4 is an explanatory diagram of the configuration of the exchange shown in FIG.

As shown in FIG. 4, the exchange 5 includes a LAN I / F unit 11, an uplink I / F unit 12, a switch unit 13, a storage unit 14 (the exchange storage unit of the present invention), and a control unit 15. ing. The LAN I / F unit 11 is an interface that performs electrical conversion such as 10Base-T or 100Base-Tx in order to connect to a lower level device such as the LAN switch 7 or the IP telephone 6. The uplink I / F unit 12 is an interface for electrical conversion such as 10Base-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 outputs the packet to the corresponding LAN I / F unit 11 or the uplink I / F unit 12. This is an L2 switch. The storage unit 14 is provided with a mode storage unit 14a, an IP telephone management table 14b, and an exchange address storage unit 14c. The mode storage unit 14a is a storage unit that stores registration mode information of the exchange 5. The IP telephone management table 14b 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 c is a storage unit that stores the IP address of the exchange 5.

  The control unit 15 includes a mode control unit 15a, an exchange address notification unit 15b, a telephone number assignment unit 15c, an IP phone registration management unit 15d, and an IP phone management table deletion unit 15e, and controls the entire exchange 5. . Each of these units constituting the control unit 15 is realized by loading a program into a processor and is a means as a function realizing unit.

  The mode control unit 15a changes the setting of the registration mode information stored in the mode storage unit 14a and notifies the mode display unit 16 of the display information. The mode control unit 15a 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. Further, when a registration request from the IP telephone 6 is received, it is determined whether or not to perform registration processing with reference to the registration mode information stored in the mode storage unit 14a.

  In response to an inquiry about the IP address of the exchange 5 from the IP telephone 6, the exchange address notifying unit 15b extracts the IP address of the exchange 5 from the exchange address storage unit 14c, along with the telephone number assigned by the telephone number assignment unit 15c described later. Notice. The telephone number assigning unit 15c newly assigns the telephone number of the IP telephone 6 newly accommodated in the exchange 5 by removing the already assigned telephone number from the telephone numbers assigned to the exchange 5.

  The telephone numbers assigned at this time may be assigned in order from the smallest number except for the telephone numbers already assigned from among the telephone numbers assigned to the exchange 5. Accordingly, when the IP telephones 6 are arranged and connected in order, telephone numbers can be assigned in that order. When assigning telephone numbers to a plurality of IP telephones 6, if the IP telephones 6 are connected in the order of the telephone numbers to be assigned, You can assign phone numbers in the order you want.

  The IP telephone registration management unit 15d associates the telephone number of the assigned IP telephone 6, the received MAC address of the IP telephone 6, the IP address, and the like, and stores them in the IP telephone management table 14b. The IP telephone management table erasure unit 15e is a means for erasing the IP telephone management table 14b by associating the MAC address, IP address, etc. of the IP telephone 6 with each other. The information of the IP telephone 6 can be deleted. This IP telephone management table deleting unit 15e 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 1 according to Embodiment 1 of the present invention will be described. FIG. 5 is a flowchart for explaining the operation of the IP telephone shown in FIG. 1, and FIG. 6 is a flowchart for explaining the operation of the exchange shown in FIG. In the first embodiment, as shown in FIGS. 1 (a) and 1 (b), the IP telephone 6b is connected to the second network 3 in a different subnet from the first network 2 to which the exchange 5 is connected. An example of registering an IP telephone in the exchange 5 when moving will be described.

  First, the operation of the IP telephone 6b will be described with reference to FIGS. As shown in FIG. 1 (a), the IP telephone 6 b is first connected to the LAN switch 7, so that it can communicate with the exchange 5 in the first network 2. In this connected state, the IP address and telephone number of the exchange 5 are not stored in the telephone data storage unit 28 of the IP telephone 6b. That is, the IP telephone 6b is in a state where the IP address of the exchange 5 and the MAC address, IP address, and telephone number of the IP telephone 6b stored in the telephone data storage unit 28 are previously deleted by the telephone data deletion unit 29f or the like. is there.

  As shown in FIG. 5, the IP telephone 6b is first turned on or reset as an initial state (S100). The telephone address request unit 29d of the telephone data control unit 29 transmits a broadcast packet by the DHCP procedure, and requests the DHCP server 9 to acquire the IP address of the IP telephone 6b. Since the requesting IP telephone 6 b is arranged in the first network 2, the IP address is acquired from the DHCP server 9.

  The telephone address receiving unit 29e stores the IP address of the IP telephone 6b assigned by the DHCP server 9 in response to the IP address assignment request in the telephone data storage unit 28 (S110).

  Subsequently, the exchange address request unit 29b refers to the telephone data storage unit 28 and confirms whether or not the IP address of the exchange 5 has been acquired (S120). If the IP address of the exchange 5 has not been acquired in S120, the process proceeds to S130. If the contents of the telephone data storage unit 28 have been previously erased by the telephone data erasure unit 29f, the process proceeds to S120.

  The exchange address request unit 29b broadcasts a packet including the MAC address stored in the telephone data storage unit 28 of the IP telephone 6b to the first network 2 to broadcast the IP address that is the address information of the exchange 5 An inquiry is made (S130). At this time, the IP address of the IP telephone 6 acquired in S110 is also transmitted.

  Since the IP telephone 6b and the exchange 5 are respectively connected to the same first network 2 and are in the same subnet, the exchange 5 exists within a range where a broadcast packet reaches. 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.

  When a packet responding to this broadcast packet is received from the exchange 5, the exchange address receiving unit 29c, via the IP packet processing unit 22, receives the IP address of the exchange 5 included in this response packet and the telephone number assigned to the IP telephone 6b. Is stored in the telephone data storage unit 28 (S140).

  The display unit 27 of the IP telephone 6b receives this telephone number from the exchange address receiving unit 29c and displays it (S150). By performing this display, it is possible to acquire the IP address of the exchange 5 and indicate to the operator that registration has been completed. Further, the operator can easily confirm the telephone number of the IP telephone 6b by this display (S160). When S160 in FIG. 5 is completed, the IP telephone 6b has already been registered in the exchange 5 and can be used as it is in the first network 2.

  Next, a case will be described in which the IP telephone 6b is moved to the second network 3 that is the relocation destination and connected to the LAN switch 8 as shown in FIG. Also in this case, as shown in FIG. 5, the power of the IP telephone 6b is turned on (S100). Next, the telephone address request unit 29d of the telephone data control unit 29 transmits a broadcast packet by the DHCP procedure, and requests the DHCP server 10 to obtain an IP address. The telephone address receiving unit 29e of the telephone data control unit 29 stores the IP address transmitted from the DHCP server 10 in response to the IP address assignment request in the telephone data storage unit 28 (S110). Then, the exchange address requesting unit 29b refers to the telephone data storage unit 28 to check whether or not the IP address of the exchange 5 has been acquired (S120). However, since the IP address of the exchange 5 has already been acquired. In this case, the process proceeds to S170.

  When it is determined that the IP address that is the address information of the exchange 5 is already stored in the telephone data storage unit 28, the exchange address request unit 29b creates a unicast packet that requests registration to the IP address of the exchange 5 (S170). In this packet, the IP address of the IP telephone 6 acquired in S110, the MAC address stored in the telephone data storage unit 28, and the telephone number information acquired in S140 are stored and transmitted. When the information of the IP telephone 6b is transmitted, the exchange 5 registers the MAC address, IP address, and telephone number of the IP telephone 6b in association with each other.

  Thereafter, the IP telephone 6b receives the IP address and telephone number as the address information of the exchange 5 again from the exchange 5, and stores them in the telephone data storage unit 28 (S180). By this notification, the IP telephone 6b can recognize that the IP telephone 6b has been registered again in the exchange 5 (S190).

  Subsequently, the operation executed in the exchange 5 will be described with reference to FIGS. First, it is assumed that the exchange 5 is in a normal operating state (S200), and is in a state of performing control such as outgoing call from the IP telephone 6a and incoming call to the IP telephone 6a.

  As 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 changes the IP address of the exchange 5. Send the requested registration request packet by broadcast. This is a packet transmitted from the IP telephone 6b in the process of S130 of FIG. The control unit 15 of the exchange 5 that has received the broadcast packet analyzes the packet (S210). In S210, when the inquiry is not an IP address inquiry or an IP address notification of the exchange 5 from the IP telephone 6b, a process corresponding to each received packet is performed as a packet for requesting other processes (S310).

  If the received packet is a registration request from the IP telephone 6b to the exchange 5 in S210, the mode control unit 15a refers to the registration mode information stored in the mode storage unit 14a to determine whether or not the registration mode is ON. Determine (S220). As a result, when the registration mode is OFF, the received registration request packet is ignored (S230).

  If the registration mode is ON, the IP telephone registration management unit 15d determines whether or not the MAC address included in the received registration request packet has already been registered in the IP telephone management table 14b (S240). If it is determined in S240 that it is not registered, the received MAC address is stored in the IP telephone management table 14b (S250).

The telephone number assigning unit 15c determines whether or not a telephone number can be assigned to the IP telephone 6b (S260). If the telephone number can be assigned, the telephone number assigned to the IP telephone management table 14b is associated with the MAC address of the IP telephone 6b. Is stored (S280). If the assignment is impossible, the exchange 5 notifies the IP telephone 6b to that effect, and the registration process is terminated (S270).

  When the processing of S280 is completed, the IP telephone registration management unit 15d extracts the IP address of the IP telephone 6b included in the registration request packet received from the IP telephone 6b, and associates it with the MAC address in the IP telephone management table 14b. Store (S290).

  If it is determined in S240 that the MAC address of the telephone 6b has already been registered in the IP telephone management table 14a, the telephone number assigning unit 15c does not assign a new telephone number, and S290 is performed in the same manner as from S280. Then, the IP telephone registration management unit 15d extracts the IP address of the IP telephone 6b included in the registration request packet, and stores it in the IP telephone management table 14b in association with the MAC address.

  Subsequently, the exchange address notification unit 15b retrieves the IP address of the exchange 5 from the exchange address storage unit 14c in response to the inquiry about the IP address of the exchange 5 from the IP phone 6b, and stores the IP address stored in the IP phone management table 14b. Notification is made together with the telephone number of the telephone 6b (S300).

  When the processing of S300 is completed, the IP telephone 6b connected to the first network 2 completes registration and enters the state of S160 shown in FIG. At this stage, the IP telephone 6b has completed registration in the exchange 5 with an IP address that can be used in the first network 3, and communication is possible as it is.

  Next, the IP telephone 6 b is connected to the second network 3 in the connection state shown in FIG. The IP telephone 6b performs the processing of S110 shown in FIG. 5, requests the DHCP server 10 to assign the IP address of the IP telephone 6b by the DHCP procedure, and receives the IP address assignment from the DHCP server 10. This IP address is different from the IP address assigned in the first network 2.

  Thereafter, the IP telephone 6b retrieves its own information (IP address, MAC address, and telephone number) and the IP address of the exchange 5 from the telephone data storage unit 28, and transmits a unicast packet to the IP address of the exchange 5 (S170).

  The control unit 15 of the exchange 5 that has received this packet from the IP telephone 6b determines that it is a registration request in S210, and proceeds to S220. The mode control unit 15a refers to the registration mode information stored in the mode storage unit 14a, and determines whether or not the registration mode is ON (S220). This registration mode setting is performed, for example, by maintenance personnel from a maintenance terminal. At this time, the mode display unit 16 displays a mode. If the registration mode is OFF in S220, the received registration request packet is ignored (S230). Therefore, when the IP telephone 6 b is moved from the first network 2 to the second network 3, it is necessary to set the registration mode information of the exchange 5 to the registration mode ON before connecting to the LAN switch 8. Regardless of whether the registration mode is ON / OFF, the exchange function of the exchange 5 operates and call control and LAN control are executed.

  Next, the IP telephone registration management unit 15d refers to the IP telephone management table 14b and determines whether or not the requested MAC address of the IP telephone 6b has been registered (S240). This is to prevent double assignment of telephone numbers to the IP telephone 6b if the exchange 5 has already been registered.

If it is determined in S240 that the MAC address of the IP phone 6b has already been registered in the IP phone management table 14a, the IP phone registration management unit 15d extracts the IP address of the IP phone 6b included in the registration request packet, It is stored in the IP telephone management table 14b in association with the MAC address (S290). Even if the IP address of the IP telephone 6b is already stored in the IP telephone management table 14b in the previous step, it is overwritten and stored (S290).

  Next, the exchange address notifying unit 15b retrieves the IP address of the exchange 5 from the exchange address storage unit 14c and notifies it together with the telephone number of the IP telephone 6b stored in the IP telephone management table 14b (S300). The IP telephone 6b already holds the IP address and telephone number of the exchange 5 in step S140, but notifies the same information again to simplify the registration process of the exchange 5.

  In this way, even when the IP telephone 6b is installed in the second network 3 in 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. Is obtained by broadcasting, and then connected to the second network 3 that is the installation destination, and the IP address of the IP telephone 6b is registered, whereby the network via the network relay device such as a router is exchanged with the exchange. Even when an IP phone is installed in the IP phone 6b, the IP phone 6b can be easily registered.

  In the present invention, even if the IP telephone and the exchange are connected to networks in different subnets, the address information and the like can be easily set, so that the exchange and the IP telephone accommodated in the exchange are connected by a LAN. It is suitable for the system and its registration method.

The figure explaining the network connection of the switching system in Embodiment 1 of this invention 1 is an explanatory diagram of the configuration of the IP telephone in FIG. Explanatory drawing of a structure of the telephone data control part of the IP telephone of FIG. 1 is an explanatory diagram of the configuration of the exchange shown in FIG. Flowchart for explaining the operation of the IP telephone of FIG. Flowchart for explaining the operation of the exchange of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switching system 2 1st network 3 2nd network 4 Router 5 Exchanger 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 part 14 Storage unit 14a Mode storage unit 14b IP phone management table 14c Switch address storage unit 15 Control unit 15a Mode control unit 15b Switch address notification unit 15c Telephone number assignment unit 15d IP phone registration management unit 15e IP phone management table deletion unit 16 Mode display unit 21 LAN I / F unit 22 IP packet processing unit 23 voice encoding unit 24 microphone 25 speaker 26 input unit 27 display unit 28 telephone data storage unit 29 telephone data control unit 29a outgoing / incoming control unit 29b exchange address request unit 29c exchange Machine address receiving unit 29d Telephone address requesting unit 29e Telephone address receiving unit 29f Telephone data erasing unit

Claims (17)

An IP telephone capable of communicating with an exchange, an interface for communicating with the exchange, a storage unit capable of storing address information of the exchange, and address information of the exchange stored in the storage unit A telephone data control unit for determining whether or not the address information of the exchange is stored in the storage unit when the telephone data control unit determines that the address information of the exchange is acquired. When the telephone data control unit determines that the address information of the exchange is stored in the storage unit, the address information of the exchange is extracted from the storage unit, and the address information is automatically transmitted to the destination. An exchange address request unit that transmits a device registration request by unicast, and a registration request is broadcast. If it is strike, IP telephone receives the address information of the exchange to be transmitted, characterized by comprising a switch address receiving unit to be stored in the storage unit from the exchange. 2. The IP telephone according to claim 1, wherein a MAC address of the own device is stored in the storage unit, and the exchange address request unit transmits the registration request including the MAC address. 3. The IP telephone according to claim 1, wherein the IP address of the own device is stored in the storage unit, and the exchange address requesting unit transmits the registration request including the IP address of the own device. The IP telephone according to claim 1, wherein the exchange address receiving unit receives a telephone number transmitted together with address information from the exchange, and the display unit displays the telephone number. 5. The IP telephone according to claim 1, wherein the address information of the exchange is an IP address. 6. The IP telephone set according to claim 1, further comprising a telephone data erasing unit 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, information relating the address information and telephone number of the IP telephone, mode information indicating whether or not to perform registration processing, and When an exchange storage unit that stores address information of the own device, a mode control unit that refers to the mode information to determine whether or not the own device performs registration processing of the IP phone, and when a registration request is received from the IP phone When the mode control unit determines that the registration process is not performed, the registration request is ignored. When the mode control unit determines that the mode is a registration process, the switch storage unit The address information is taken out and the address information of the IP phone included in the registration request is sent to the exchange address notifying unit that transmits the address information to the IP phone. And stores in the exchange memory unit in association with the telephone number, switch, characterized in that it comprises an IP telephone registration management unit that performs registration processing of the IP telephone. 8. The IP telephone registration management unit stores a MAC address of an IP telephone transmitted from the IP telephone in the storage unit in association with address information and a telephone number of the IP telephone. Switchboard. 9. The exchange according to claim 7, further comprising an IP telephone management table erasing unit that erases address information of the IP telephone stored in the storage unit. 10. The exchange according to claim 7, wherein the address information of the IP telephone is an IP address. The exchange according to any one of claims 7 to 10, wherein the display unit displays mode information stored in the exchange storage unit. A first network provided with an exchange, a network relay device connected to the first network, and a second network connected to the network relay device, the switch and the second network An exchange system including an IP telephone that can be accommodated, wherein the IP telephone includes a storage unit capable of storing address information of the exchange, and the first telephone when connected to the first network. When the address information of the exchange is inquired by broadcast to the network and a registration request is made, and the address information of the exchange is stored and connected to the second network, the address information of the IP telephone is sent to the exchange An exchange address requesting unit that sends and requests registration, and the exchange in response to the inquiry Is provided with an exchange address receiving unit that receives the address information of the exchange transmitted from the IP address and stores it in the storage unit. When receiving a registration request from the IP telephone, the exchange receives the mode information in the exchange storage unit. A mode control unit that determines whether or not to perform registration processing with reference to the MAC address of the IP phone in response to a registration request from the IP phone when the mode control unit determines a mode for performing registration processing; An IP telephone registration management section that associates address information and stores it in the exchange storage section, and an exchange address notification section that notifies the IP telephone of the address information of the exchange when a registration request is made by the broadcast. An exchange system characterized by The exchange is provided with a telephone number assigning unit for assigning a telephone number of the IP telephone in response to a registration request from the IP telephone, and notifies the telephone number assigned by the exchange address notifying part to the IP telephone, 13. The exchange system according to claim 12, wherein in the IP telephone, the exchange address receiving unit receives the telephone number notified from the exchange, and the display unit displays the telephone number. 14. The exchange system according to claim 12, wherein the IP telephone is provided with a telephone data erasure unit for erasing address information of the exchange stored in the storage unit. 15. The exchange system according to claim 12, wherein the exchange is provided with an IP telephone management table erasure unit for erasing address information of the IP telephone stored in the exchange storage unit. . The exchange system according to any one of claims 12 to 15, wherein the exchange is provided with a display unit, and mode information stored in the exchange storage unit is displayed. Connecting the IP telephone to the first network, the IP telephone broadcasting to the first network, inquiring and requesting the address information of the exchange, and the exchange issuing the IP telephone in response to the address information inquiry. Receiving the MAC address transmitted from the exchange and storing it in the exchange storage unit, and notifying the address information of the exchange, and the IP telephone receiving the address information of the exchange transmitted from the exchange Storing in the storage unit; connecting the IP telephone to a second network; and the IP telephone acquires the address information of the exchange from the storage, and the second address based on the acquired address information. Connected to the exchange via the network of Registering the exchange system, characterized in that it comprises a step of requesting recording.

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