JP5273803B2 - Communication network system, terminal setting method, and IP telephone - Google Patents

Description

  The present invention relates to a communication network system, a terminal setting method, and an IP telephone, and more particularly to a method for setting information set in one terminal using DHCP (Dynamic Host Configuration Protocol) to another terminal in the same network. is there.

  Conventionally, DHCP (Dynamic Host Configuration Protocol) has been used to transmit setting information to a network terminal connected to a TCP / IP network. DHCP is a protocol that defines a mechanism for extending the message format of the BOOTP protocol and transmitting setting information such as a network address to a network terminal.

  As a communication system using DHCP, for example, there are systems described in Patent Documents 1 and 2. The system of Patent Literature 1 includes a first field of 2 bytes or more for storing an identification number indicating a type of setting information for setting setting request information from a client in a DHCP option field, and a second field for storing setting information. Use a protocol that includes fields. Then, the server sets the setting information corresponding to the identification number included in the first field of the setting request information from the client in the second field, and outputs the set setting information to the client using the protocol. To do.

  Patent Document 2 discloses a terminal device that detects an access destination on a network and acquires destination information of the access destination, holds destination information acquired from the terminal device, and receives a frame from the terminal device. And a monitoring device that creates at least one unicast frame whose destination is the frame destination based on the destination information.

JP 2003-162462 A JP 2008-028914 A

  By the way, it is not impossible to automate setting by combining a DHCP server and a multifunctional router installed in an existing OS. However, the person in charge of construction naturally needs knowledge specialized in these network devices, and not everyone can easily perform construction. In other words, not only the setting knowledge of the terminal but also the knowledge technology of the server and network is necessary, and the burden on the construction staff is not small. In addition, there may be a restriction that the general-purpose server cannot tolerate the unique information required by the IP terminal that wants to automate the settings, so some settings may eventually have to be registered manually. .

  Furthermore, even if the work is complicated or monotonous, there is a high possibility that mistakes will be caused in a large quantity of work, so it is difficult to maintain quality. In order to improve the reliability of the construction from such a background, it is necessary to simplify and automate the work as much as possible, and to provide a method for checking the operation with a margin.

  Patent Document 1 describes a system for obtaining sufficient setting information used in a network application program, and Patent Document 2 describes a system that suppresses broadcast from a virtual machine. There is no mention of simplifying the construction.

  An object of the present invention is to provide a communication network system and a terminal setting method capable of simplifying the installation work by automatically setting information set in one terminal using DHCP in terminals existing in the same network. And providing an IP telephone.

According to the first aspect of the present invention, a plurality of IP telephones are connected to a network, and a DHCP server and a central device for centrally managing the IP telephones are connected to another network different from the network. A communication network system for relaying the separate networks by a router, wherein the plurality of IP telephones have a built-in DHCP server function and a DHCP relay agent function, and one IP of the plurality of IP telephones in advance. Basic information for connecting to the center device and terminal-specific information is set in the telephone, and has setting means for setting other IP telephones using the IP telephone as a master telephone, and the setting means includes the IP telephone Operates as a DHCP relay agent and connects to the other network The basic information is set in another IP phone by communicating with the DHCP server, and the terminal-specific information is set in another IP phone when the IP phone operates as a DHCP server. A featured communication network system is provided.
According to the second aspect of the present invention, a plurality of IP telephones are connected to the network, and a DHCP server and a central device for centrally managing the IP telephones are provided in another network different from the network. A terminal setting method for a communication network system that is connected and relays the separate networks by a router, wherein the plurality of IP telephones have a built-in DHCP server function and a DHCP relay agent function, and Basic information for connecting to the center device and terminal-specific information are set in one IP telephone among telephones, and setting means for setting other IP telephones using the IP telephone as a master telephone, the setting means The IP phone acts as a DHCP relay agent, The basic information is set in another IP telephone by communicating with a DHCP server connected to another network, and the terminal-specific information is stored in another IP telephone by the IP telephone operating as a DHCP server. A terminal setting method for a communication network system, comprising: a setting step.
According to the third aspect of the present invention, a plurality of IP telephones are connected to the network, and a DHCP server and a central device for centrally managing the IP telephones are provided in another network different from the network. The IP telephone set connected to a communication network system that relays the separate networks by a router, and has a built-in DHCP server function and a DHCP relay agent function for connecting to the center apparatus in advance. Basic information and terminal specific information are set, and there is setting means for setting the basic information and terminal specific information in another IP telephone using the IP telephone as a master telephone, and the setting means includes a DHCP relay Acted as an agent and connected to the other network The basic information is set in another IP telephone by communicating with an HCP server, and the terminal-specific information is set in another IP telephone when the IP telephone operates as a DHCP server. An IP telephone is provided.

  According to the present invention, since the IP telephone incorporates the DSHC server function and the DHCP relay agent function, the setting of a plurality of terminals can be automated, and the installation work of the IP telephone can be simplified. Moreover, simple mistakes can be reduced and construction quality can be improved. Furthermore, construction can be performed with only basic knowledge, and a construction plan can be made flexibly.

It is a block diagram which shows the structure of one Embodiment of the communication network system which concerns on this invention. It is a block diagram which shows one Embodiment of the IP telephone which concerns on this invention. It is a timing chart explaining the terminal setting method of the communication network system which concerns on this invention.

  Next, embodiments for carrying out the invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a communication system according to the present invention. FIG. 1 shows an example of a PBX / button telephone system in which a plurality of IP telephones, a main apparatus (center apparatus), and a DHCP server are arranged on different LANs via a router.

  That is, the dedicated IP telephone A (200), the dedicated IP telephone B (201), the dedicated IP telephone C (202),... Exist in the network NA, and the center apparatus 301 that centrally manages the DHCP server 300 and the dedicated IP telephone is provided. A basic configuration that exists in the network NB and in which the router 100 relays these separate networks NA and NB is shown.

  In the present invention, in such a PBX / button telephone system, the IP telephone incorporates a DSHC server function and a DHCP relay agent function in order to simplify the installation work of the IP telephone. For example, one dedicated IP telephone A (200) is installed and set, and then this dedicated IP telephone A (200) becomes the master telephone, and the other dedicated IP telephone B (201), dedicated IP telephone C (202), installation and setting are performed.

  The basic information is set in the dedicated IP phone B (201), the dedicated IP phone C (202),... When the dedicated IP phone A (200) functions as a DHCP relay agent and communicates with the DHCP server 300. The terminal-specific information is set in the dedicated IP telephone B (201), the dedicated IP telephone C (202),... By the dedicated IP telephone A (200) acting as a DHCP server.

  The basic information includes, for example, an IP address, a subnet mask, a default gateway, a DNS server address, a domain name, and a SIP server. Device-specific information includes, for example, Ethernet settings (such as Speed / Duplex), port settings (such as RTP / SIP / HTTP), voice quality settings (such as ToS values / voice levels), area ID (such as country information where installed), There are encryption settings, NAT settings, security settings, etc.

  The dedicated IP telephone A (200), the dedicated IP telephone B (201), the dedicated IP telephone C (202), ... are all equipped with a DHCP client / DHCP relay agent / DHCP server. The DHCP client is enabled in the initial state, and the DHCP relay agent / DHCP server is disabled in the initial state.

  The dedicated IP phone A (200) disables the DHCP client, enables the DHCP relay agent / DHCP server, and sets information necessary for connection with the center apparatus 301 and information necessary for connection with the DHCP server 300. After confirming that the dedicated IP telephone A (200) can normally communicate with the center apparatus 301, the dedicated IP telephones B (201), C (202),. (202),... Automatically acquire basic information such as an IP address from the DHCP server 300 via the dedicated IP telephone A (200).

  Next, the dedicated IP telephones B (201), C (202),... Request information necessary for connection to the center apparatus 301 as a DHCP option, and the dedicated IP telephone A (200) responds to this. The set information is returned as a DHCP option. The dedicated IP telephones B (201), C (202),... Can communicate with the center apparatus 301 using this information and automatically connect to the center apparatus 300.

  FIG. 2 is a block diagram showing an example of the dedicated IP phone A. Here, the configuration of the dedicated IP phone A will be described, but the configurations of the other dedicated IP phones B, C,... Are the same. As shown in FIG. 2, the dedicated IP telephone A (200) includes an IP message transmission / reception unit A1, a DHCP message analysis unit A2, a DHCP client A3, a DHCP relay agent A4, and a server A5. Further, it includes a setting data management unit A6, a telephone function application A7 used for call control, and a GUI display unit A8. Each of these units generally operates as follows.

  The telephone function application A7 requests the GUI display unit A8 to display the operation information by the user's telephone operation, and requests the IP message transmission / reception unit A1 to send a message for the call control by the outgoing operation, or the received message information. Receive. When the IP message transmission / reception unit A1 receives the DHCP message, it passes it to the DHCP message analysis unit A2.

  If the message is a request for basic information from a DHCP client of another dedicated IP phone and the DHCP relay agent A4 is valid, it is passed to the DHCP relay agent A4. If the message is a request for terminal-specific information from a DHCP client of another dedicated IP telephone and the DHCP server A5 is valid, it is passed to the DHCP server A5.

  If the message is a response from the DHCP server 300 and the DHCP client A3 is valid, it is passed to the DHCP client A3. It is assumed that the DHCP client A3 and the DHCP relay agent A4 / DHCP server A5 cannot operate simultaneously. The setting data management unit A6 manages basic information and terminal specific information necessary for the dedicated IP telephone to connect to the center apparatus 301.

  Next, the operation of this embodiment will be described in detail with reference to FIGS. First, the person in charge of construction registers basic information and terminal specific information necessary for connection to the center apparatus 301 in the dedicated IP telephone A (200). As described above, the basic information includes an IP address, a subnet mask, a default gateway, a DSN server address, a domain name, a SIP server, and the like. The DHCP client A3 of the dedicated IP phone A (200) is disabled and the IP address is fixed. In addition, the device-specific information includes Ethernet settings (Speed / Duplex), port settings (RTP / SIP / HTTP), voice quality settings (ToS value / voice level, etc.), area ID (such as country information of the installed country), etc. It is.

  After confirming that the dedicated IP telephone A (200) can be connected to the center apparatus 301, the construction worker activates the DHCP relay agent A4 and the DHCP server A5. The DHCP relay agent A4 transfers an IP address request from the network NA to the DHCP server 300 of the network NB, and receives the IP address leased by the DHCP server 300, so that each fixed IP address is set in advance.

  Next, with reference to S1 of FIG. 3, the procedure by which the dedicated IP telephone B (201) acquires basic information will be described. S1 shows a procedure in which the dedicated IP telephone A (200) operates as a DHCP relay agent. Since the router 100 only relays the DHCP message between the IP phone A (200) and the DHCP server 300, it is omitted from this figure. In addition, the connection to the center device 301 after information acquisition is also omitted from this figure.

  First, the dedicated IP telephone B (201) is turned on. The DHCP client A3 of the dedicated IP phone B (201) is enabled in the initial state, and broadcasts a DHCP DISCOVER message. The DISCOVER message (broadcast) transmitted from the dedicated IP telephone B (201) cannot pass through the router 100 and does not reach the network NB.

  The IP message transmitting / receiving unit A1 of the dedicated IP telephone A (200) receives this message and passes it to the DHCP message analyzing unit A2. As a result of the analysis, it can be seen that the DHCP DISCOVER message requests basic information, so the message is passed to the DHCP relay agent A4.

  The DHCP relay agent A4 unicasts a DHCP DISCOVER message to the DHCP server 300 of the network NB. The DHCP server 300 of the network NB determines an IP address leased to the dedicated IP phone B (201), and unicasts a DHCP OFFER message to the dedicated IP phone A (200) of the network NA.

  The dedicated IP phone A (200) that has received the DHCP OFFER message transmits a DHCP OFFER message to the dedicated IP phone B (201) via the DHCP relay agent A4. Thereafter, the dedicated IP telephone B (201) determines basic information received from the DHCP server 300 of the network NB via the dedicated IP telephone A (200) according to a normal DHCP procedure (DHCP REQUEST / DHCP ACK).

  Next, a procedure for the dedicated IP telephone B (201) to acquire the terminal specific information will be described with reference to S2 of FIG. S2 in FIG. 3 shows a procedure in which the dedicated IP phone A (200) operates as a DHCP server. It should be noted that a DHCP option number is uniquely defined as a dedicated IP telephone for information to be commonly set in the network NA in the terminal specific information. After acquiring the basic information, the DHCP client A3 of the dedicated IP telephone B (201) describes the DHCP option number of the terminal-specific information to be acquired in a DHCP INFORMATION message and broadcasts it.

  When the IP message transmission / reception unit A1 of the dedicated IP telephone A (200) receives this message, it passes it to the DHCP message analysis unit A2. As a result of the analysis, it can be seen that the DHCP INFORMATION message requests terminal-specific information, and the message is passed to the DHCP server A5. The DHCP server A5 of the dedicated IP phone A (200) reads out terminal-specific information corresponding to the requested DHCP option number from the setting data management unit A6.

  The terminal-specific information read here is the same as that of the dedicated IP telephone A (200) that has successfully connected to the center apparatus 301. This terminal-specific information is described as a DHCP option in a DHCPACK message and transmitted to the dedicated IP telephone B (201). The DHCP client A3 of the dedicated IP telephone B (201) extracts terminal-specific information from the DHCP option described in the DHCP ACK, stores it in the setting data management unit A6, and executes connection with the center apparatus 301 using the information. The dedicated IP phone C (202),... Is set in the same manner.

  As described above, in this embodiment, since the IP telephone has a DSHC server function and a DHCP relay agent function, it is possible to automate the setting of a plurality of terminals, and it is necessary to set option settings on the DHCP server side and settings for each terminal. There is no. Therefore, the installation work of the IP telephone can be simplified.

  In addition, there is room for the person in charge of the construction, and a sufficient amount of time can be spent for quality checks such as operation confirmation, so that the construction quality can be improved. In addition, since the settings of the terminals whose operation has been confirmed can be used as they are in other terminals, simple mistakes can be reduced and the construction quality can be further improved.

  Furthermore, if there is basic knowledge about network construction, the construction can be completed with only knowledge of the terminal. In other words, the person in charge of construction does not need to access the DHCP server. As a result, the restriction on the person in charge of the construction is reduced, the work concentrated on the excellent person in charge of the construction can be distributed, and the construction plan can be made flexibly.

  The present invention is effective for automating the setting work in an IP device that is installed in large numbers like IP telephones and needs to be set according to the environment.

100 router 200, 201, 202 dedicated IP phone 300 DHCP server 301 center device NA, NB network A1 IP message transmission / reception unit A2 DHCP message analysis unit A3 DHCP client A4 DHCP relay agent A5 DHCP server A6 setting data management unit A7 telephone function application A8 GUI display

Claims (9)

A plurality of IP telephones are connected to the network, and a DHCP server and a central device for centrally managing the IP telephones are connected to another network other than the network, and communication is performed by relaying the separate networks by a router. A network system,
The plurality of IP telephones have a built-in DHCP server function and a DHCP relay agent function,
Basic information for connecting to the center device and terminal-specific information are set in advance in one IP telephone among the plurality of IP telephones, and setting means for setting other IP telephones using the IP telephone as a master telephone is provided. And
The setting unit is configured to set the basic information in another IP phone by the IP phone operating as a DHCP relay agent and communicating with a DHCP server connected to the other network. A communication network system, wherein the terminal-specific information is set in another IP telephone by operating as a DHCP server.   The communication network system according to claim 1,
  Prior to setting the basic information and terminal specific information, the IP telephone serving as the master telephone tried to connect to the center device in advance using the basic information and terminal specific information, and the connection was successfully performed. After confirming this, the basic information and terminal-specific information are set in another IP telephone.   The communication network system according to claim 1 or 2, wherein the basic information includes an IP address, a subnet mask, a default gateway, a DNS server address, a domain name, or a SIP server. The device-specific information includes Ethernet (registered trademark) setting (Speed / Duplex), port setting (RTP / SIP / HTTP), voice quality setting (ToS value / voice level), area ID (information on the country where the device is installed), encryption 4. The communication network system according to any one of claims 1 to 3, wherein a network setting, a NAT setting, or a security setting is included. A plurality of IP telephones are connected to the network, and a DHCP server and a central device for centrally managing the IP telephones are connected to another network other than the network, and communication is performed by relaying the separate networks by a router. A terminal setting method for a network system,
The plurality of IP telephones have a built-in DHCP server function and a DHCP relay agent function,
Basic information for connecting to the center device and terminal-specific information are set in advance in one IP telephone among the plurality of IP telephones, and setting means for setting other IP telephones using the IP telephone as a master telephone is provided. And
A step of setting the basic information in another IP phone by the setting means, wherein the IP phone operates as a DHCP relay agent and communicates with a DHCP server connected to the other network;
A terminal setting method for a communication network system, comprising the step of setting the terminal-specific information in another IP telephone by the IP telephone operating as a DHCP server.   A terminal setting method for a communication network system according to claim 5,
  Prior to setting the basic information and terminal specific information, the IP telephone serving as the master telephone tried to connect to the center device in advance using the basic information and terminal specific information, and the connection was successfully performed. A terminal setting method for a communication network system, wherein the basic information and the terminal-specific information are set in another IP telephone after confirming this.   7. The terminal setting method for a communication network system according to claim 5, wherein the basic information includes an IP address, a subnet mask, a default gateway, a DNS server address, a domain name, or a SIP server. The device-specific information includes Ethernet (registered trademark) setting (Speed / Duplex), port setting (RTP / SIP / HTTP), voice quality setting (ToS value / voice level), area ID (information on the country where the device is installed), encryption 8. The terminal setting method for a communication network system according to any one of claims 5 to 7, characterized in that an authentication setting, a NAT setting or a security setting is included. A plurality of IP telephones are connected to the network, and a DHCP server and a central device for centrally managing the IP telephones are connected to another network other than the network, and communication is performed by relaying the separate networks by a router. The IP phone connected to a network system,
Built-in DHCP server function and DHCP relay agent function,
Basic information and terminal-specific information for connecting to the center device are set in advance, and setting means for setting the basic information and terminal-specific information in another IP phone using the IP phone as a master phone,
The setting means sets the basic information in another IP phone by the IP phone operating as a DHCP relay agent, communicating with a DHCP server connected to the other network, and the IP phone An IP telephone, wherein the terminal-specific information is set in another IP telephone by operating as a DHCP server.

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