JP2007329935A - Transmission source terminal identification information notification system, call terminating device, call originating device, server device, registration device, terminal device, and gateway device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission source terminal identification information notification system capable of solving the problem of spoofing in an IP network system. <P>SOLUTION: A call originating means transmits a communication address and terminal identification information of a present device to a call terminating means and the call terminating means receives the communication address and terminal identification information of the call originating means and inquires of a server means about a communication address corresponding to the received terminal identification information. On the other hand, a server means searches the communication address corresponding to the terminal identification information of the call originating means received from the call terminating means from a data table and answers the call terminating means, and the call terminating means comprises a communication address comparing means for comparing the communication address received from the server means with the communication address received from the call originating means. When both the communication addresses match as a result of the comparison of both the communication addresses, at least one of the terminal identification information and second terminal identification information corresponding to the terminal identification information is displayed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an IP network system including communication terminal devices such as an IP phone, an IP phone adapter, and an IP video phone, and more particularly, to a source terminal identification information notification system that can solve the problem of impersonation in an IP network system. Is.

Currently, IP phones are spreading at an explosive rate. While it is attractive that the fee structure is cheap, there are things that are inferior to the services of the conventional subscriber network, and one of them is a caller ID notification function (so-called number display), and the service is still in service The current situation is not.
The reason why it is difficult to realize the service is that the telephone number and IP address of the IP telephone apparatus do not correspond one-to-one, that is, the IP address is dynamically assigned, so that the telephone number is not uniquely determined from the IP address. One of them.
As one solution to this, there is a method in which the device itself embeds a telephone number in a packet transmitted by the calling terminal device and transmits it to the partner device.
As prior art, Japanese Patent Laid-Open No. 11-205454 (the first transmission means provided in the exchange 2 on the caller side sends the caller telephone number to the server 1 on the caller side using the first line 3). In the server 1, the second transmission means 1a transmits the caller telephone number to the server 4 on the callee side using the Internet 7. The caller telephone number transmitted to the server 4 is the incoming call. The caller number obtaining means 5a provided in the caller-side exchange 5 takes in the caller-side exchange 5 via the second line 6).
Japanese Patent Laid-Open No. 11-205454

As one solution for realizing the caller ID notification function (so-called number display), there is a method in which a device itself embeds a telephone number in a packet transmitted by a terminal device on the calling side and transmits it to the partner device.
However, this method has a problem of so-called impersonation. Therefore, a mechanism is required for the carrier side (provider in the case of IP phone) to ensure that the telephone number of the caller is correct, as in the number display service of NTT.
The present invention has been made to solve the above-described conventional problems, and an object thereof is to provide a source terminal identification information notification system capable of solving the problem of impersonation in an IP network system. is there.

In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that server means having a data table comprising a communication address and terminal identification information corresponding to the communication address, calling means for making a call using an IP packet, An originating terminal identification information notifying system in an IP network system comprising an incoming call means for receiving an outgoing IP packet, wherein the call means sends its communication address and terminal identification information to the incoming call means. The incoming call means receives the communication address of the calling means and terminal identification information and inquires of the server means about the communication address corresponding to the received terminal identification information, while the server means The communication address corresponding to the terminal identification information of the calling means received from the calling means is searched from the data table and searched. The communication address is returned to the incoming call means, and the incoming call means comprises communication address comparison means for comparing the communication address received from the server means with the communication address received from the calling means. As a result of comparing both the communication addresses by the address comparison means, if both the communication addresses match, the incoming call means is at least one of the terminal identification information or the second terminal identification information corresponding to the terminal identification information. Source terminal identification information display means for displaying one is provided.
According to a second aspect of the present invention, an incoming call device comprising the incoming call means of the first aspect is characterized.
According to a third aspect of the present invention, there is provided a server device comprising the server means of the first aspect.
The invention according to claim 4 is the server device according to claim 3, wherein when there is an inquiry about the communication address corresponding to the terminal identification information and the terminal identification information is not in the data table, The first server apparatus includes a communication address inquiry means for making an inquiry to the second server means.

The invention according to claim 5 is the first server device according to claim 4, and in response to an inquiry about the communication address corresponding to the terminal identification information from the first server means, The second server apparatus includes a communication address answering unit that answers a corresponding communication address in the data table.
According to a sixth aspect of the present invention, a calling device including the calling means of the first aspect is characterized.
The invention described in claim 7 further comprises terminal identification information / communication address registration means for registering at least one of the communication address and terminal identification information of the calling means or the calling means in the server means. The caller terminal identification information notification system according to claim 1 is characterized.
Further, the invention according to claim 8 further includes terminal identification information / registration information for registering at least one of the communication address and terminal identification information of the calling means or the called means in the server means immediately before starting communication. The system according to claim 1 or 7, further comprising a communication address registration unit.
The terminal identification information / communication address registration means may be configured such that the terminal identification information / communication address registration means is changed when at least one of the communication address or the terminal identification information of the calling means or called means is changed. The terminal identification information notification system according to claim 7 or 8, wherein the terminal identification information or the communication address is changed and registered in the server means.
According to a tenth aspect of the present invention, there is provided a registration apparatus comprising the terminal identification information / communication address registration means according to the seventh, eighth, or ninth aspect.
The invention as set forth in claim 11 is characterized in that the calling device according to claim 6 is provided with the terminal identification information / communication address registration means of claim 7, 8 or 9.
According to a twelfth aspect of the present invention, there is provided an incoming call device according to the second aspect, comprising the terminal identification information / communication address registration means according to the seventh, eighth or ninth aspect.
The invention according to claim 13 is characterized in that the server device according to claim 3, 4 or 5, comprising the terminal identification information / communication address registering means according to claim 7, 8 or 9.
According to a fourteenth aspect of the present invention, there is provided a terminal device comprising the calling means and the incoming call means of the first aspect.
According to a fifteenth aspect of the present invention, there is provided a terminal device comprising the calling means, the incoming call means, and the server means of the first aspect.

The invention according to claim 16 further comprises gateway means having a communication signal system conversion function for communicating with a communication terminal connected to another communication network having a different communication signal system. When the calling means makes a call to a communication terminal of the other communication network, it receives the terminal identification information of the calling means and inquires the server means for a communication address corresponding to the received terminal identification information. On the other hand, the communication address comparing means for comparing the communication address received from the server means and the communication address received from the calling means, and as a result of comparing both the communication addresses by the communication address comparing means, If the communication addresses match, the terminal identification information and the communication address of the calling means are notified to the other communication network. The claim 1 or 7 or 8 or 9 origination terminal identification information notification system comprising a communication address terminal identification information notification means, characterized that.
Further, in the invention according to claim 17, the gateway means further obtains at least one of the communication address and the terminal identification information of the calling means of the other communication network received from the other communication network. 17. The source terminal identification information notification system according to claim 16, further comprising terminal identification information / communication address registration means registered in the server means.
In the invention according to claim 18, the gateway means further includes at least one of the communication address of the calling means of the other communication network and the terminal identification information by the terminal identification information / communication address registration means. 18. The originating terminal identification information notification system according to claim 17, wherein the communication address and the terminal identification information are transmitted to the incoming call means while registering with the server means.
According to a nineteenth aspect of the present invention, there is provided a gateway device including the gateway means according to the sixteenth, seventeenth, or eighteenth aspect.
The invention according to claim 20 is the gateway apparatus according to claim 19, further comprising the server means according to claim 1.

According to the feature of the present invention, since the terminal identification information of the calling means is displayed on the called means, the user of the called means can determine what kind of terminal the counterpart terminal that is the calling means is, You can easily know who made the call.
According to another feature of the present invention, since the server means comprises data table means, terminal identification information corresponding to the communication address of the calling means received from the called means can be returned to the called means. .
According to another feature of the present invention, the terminal identification information can be obtained even if there is no registration data in the inquired server means.
According to another feature of the present invention, since the communication address of the calling device and the terminal identification information are transmitted to the incoming call means, the called device can know the communication address and the terminal identification information.
According to another feature of the present invention, since it is registered in the server means, impersonation on the terminal side can be prevented.
According to another feature of the present invention, since the registration is performed immediately before the start of communication, the incoming call means can know the latest communication address and terminal identification information.
According to another feature of the present invention, even if the communication address or the terminal identification information is changed, the registration is changed, so that when the incoming call means makes an inquiry to the server means, the latest data table is used for answering. I can do it.
According to another feature of the invention, there is a dedicated registration device, which increases security for registration.
According to another feature of the present invention, the cost can be reduced without the need for a dedicated registration device.
According to another aspect of the present invention, a communication address and terminal identification information can be notified to another communication network.
According to another feature of the present invention, by registering terminal identification information and communication address information notified by another communication network in the server means, the incoming call means can obtain the terminal identification information from the server means. Therefore, it is not necessary to prepare a special mechanism even when another communication network makes a call.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of an IP telephone as a communication terminal apparatus embodying the present invention.
As shown in FIG. 1, in this IP telephone, a CPU (Central Processing Unit) 1 controls the entire apparatus, and its execution program is stored in a ROM (Read Only Memory) 3. The execution program is read from the ROM 3, and instructions included in the execution program are sequentially interpreted to control the entire apparatus. A RAM (Random Access Memory) 5 forms a work area necessary for the control, and stores storage parameters and various parameters and management information necessary for the control. The operation input / display unit 7 includes a display for displaying various operation keys and operation guidance, and the operator operates the apparatus.
The handset 9 is a so-called receiver that performs a voice call, and includes a speaker that outputs voice, a microphone that inputs voice, and the like. The call circuit 11 sends an audio signal input from a microphone or the like to the IP unit 13 and outputs an audio signal input from the IP unit 13 to a speaker or the like. In general, a circuit for adjusting the sound volume by amplifying or attenuating the sound signal or improving the sound quality by changing the frequency characteristic of the sound signal is also included. In general, so-called side-tone control for controlling the sound wraparound from the transmitter to the receiver is also performed in this portion.

The IP unit 13 converts the analog audio signal sent from the call circuit 11 into digital data, and further encodes and compresses it if necessary. Next, the audio signal data is embedded in the IP packet for transmission, and sequentially sent out to the line connection I / F 15. Also, the audio signal data is extracted from the receiving IP packet input from the line connection I / F 15, is decoded and decompressed if necessary, further converts the digital audio signal data into an analog audio signal, and sends it to the call circuit 11. To do.
The IP unit 13 also assembles control IP packets for performing call control and sequentially sends them out to the line connection I / F 15. Further, the received control IP packet input from the line connection I / F 15 is disassembled. Such transmission and reception of the control IP packet may be configured by another means independent of the IP unit 13. The operation control of the IP unit 13 is performed by the CPU. The line connection I / F 15 sends a transmission IP packet input from the IP unit 13 to the connection line, and sends a reception packet input from the connection line to the IP unit 13. When a general telephone network supplied by NTT or the like is used as a connection line, the line connection I / F includes an XDSL modem that mutually converts a digital signal and an analog signal. If the connection line is a LAN or the like, the line connection I / F is a LAN I / F (Ethernet (registered trademark), token ring, FTTH, etc.). Moreover, you may provide both.
As shown in FIG. 1, the CPU 1, ROM 3, RAM 5, operation input / display unit 7, IP unit 13, and call circuit 11 are connected to each other by an internal bus 17.

FIG. 2 is a schematic block diagram of an IP telephone adapter as a communication terminal apparatus embodying the present invention.
The IP telephone adapter shown in FIG. 2 has the same configuration except that there is a telephone connection I / F 19 instead of the telephone circuit 11 and the handset 9 in the IP telephone shown in FIG. The telephone connection I / F 19 is connected to an analog telephone and inputs / outputs an audio signal.
FIG. 3 is a schematic block diagram of an IP videophone embodying the present invention.
The IP videophone shown in FIG. 3 has a configuration in which an image processing circuit 21, an image display unit 23, and a camera 25 are added to the IP phone shown in FIG. The camera 25 converts the subject into image data one after another. The image data is subjected to image processing for transmission data by the image processing circuit 21. The image-processed data is encoded and compressed by the IP unit 13, and the image signal data is embedded in a transmission IP packet and sequentially sent out to the line connection I / F 15. In addition, image signal data is extracted from the receiving IP packet input from the line connection I / F 15, decoded and decompressed, and sent to the image processing circuit 21. The image processing circuit 21 performs image processing in accordance with the display unit 7, sends image data to the display unit 7, and the display unit 7 can obtain a moving image by continuously displaying the image data.

Next, referring to FIGS. 4 and 5, a protocol used in an IP phone or the like will be described.
The call setting means sets a call using a standard call control protocol (SIP, H.323, MEGACO, etc.) defined by the standard, and enables communication or a call.
FIG. 4 is a diagram showing a SIP protocol stack used in an IP phone or the like.
As shown in FIG. 4, when SIP is used as a call / session control protocol, IP (Internet Protocol) is used in the network layer. In this case, UDP (User Datagram Protocol), TCP (Transmission Control Protocol), or SCTP (Stream Control Transmission Protocol) is used in the Transport Layer. In this case, SDP (Session Description Protocol) is used as a control information description protocol for describing the SIP message. In this case, RTP (Realtime Transport Protocol) is used as a moving image / audio transmission / reception protocol together with UDP (transport layer).
FIG. 5 is a protocol diagram of one of the SIP communication models used in IP phones and the like.
First, a request message called INVITE is sent from the calling side. INVITE is a session activation signal, and an attribute of the session that can be received by the caller is indicated by SDP. Specifically, the reception condition (codec, port number, etc.) on the calling side and the transmission condition are presented. The called party receives the INVITE and sends 180 Ringing to the calling party to notify that it is in the ringing state. The 180 Ringing may present the receiving condition (codec, port number, etc.) and the transmission condition on the called side, but is usually presented in the next 200 OK. Next, 200 OK is transmitted to the calling side in order to notify that the called side is ready to talk. The session attributes that can be received by the callee are indicated by SPD. This 200 OK presents the reception condition (codec, port number, etc.) and transmission condition on the called side.
Next, the calling side transmits ACK to the called side, thereby negotiating attributes that can be used for communication. In the present invention, this is defined as the connection phase for convenience. Next, transfer of media (sound, image, video, etc.) is started. In the present invention, this data transfer period is defined as a data transmission / reception phase for convenience. When terminating the communication, the stop side sends a BYE signal to request the end of the communication, and the side receiving it transmits a 200 OK signal as a response to terminate the communication. In the present invention, this phase is defined as a cutting phase for convenience.

FIG. 6 is a system diagram of a source terminal identification information notification system having a source terminal identification information notification function using the IP phone or the like shown in FIG.
In FIG. 6, a calling device 27 is one form of an IP telephone as a communication terminal device, and is a terminal device that starts a call setting operation prior to communication between terminals. The called device 29 is also a form of an IP telephone as a communication terminal device, and is a terminal device that receives a call setting start signal (in the example, an INVITE signal) when the calling device 27 starts a call setting operation. . The server devices 31 and 33 have a data table for storing the communication addresses of the communication terminal devices 27 and 29 and the terminal identification information corresponding to the communication addresses, and inquire about the communication address and the terminal identification information from the communication terminal device or other server devices. It is a device that answers. Each device is connected to an IP network 35. The calling device 27 and the called device 29 may be the IP telephone adapter or the IP videophone shown in FIGS.

FIG. 7 is an operation flowchart of the caller terminal identification information notification system using the IP phone shown in FIG. This operation control is mainly performed by the CPU 1 of each communication terminal device (IP telephone or the like).
In step 101 of FIG. 7, first, the calling device 27 uses the protocol for registering terminal identification information / communication address to make the communication address and terminal identification information of its own device the second server before making a call. Register in the device 33 (arrow A in FIG. 6). In this case, there are various methods for determining which of the plurality of server devices 31 and 33 to register. The first method is to set the communication address of the server device to be registered in advance in the terminal device, and the second method is to determine the server to be registered from the communication address of the terminal device or the terminal identification information. For example, the server device can be determined from a part of the terminal identification information. That is, a method is conceivable in which a server device that includes part of the terminal identification information as the terminal identification information of the server device is determined as a server device to be registered.

Even if the terminal device registers with the server device arbitrarily, if the terminal device registers incorrect information even if the terminal device registration is arbitrarily permitted, the terminal device will receive an incoming call based on the correct terminal identification information. Since it cannot be called, it is considered that information that is not intentionally correct will not be registered, so registration of information may be allowed without limitation, but in order to prevent true impersonation etc., data notarity is ensured A way to do it is necessary. The first method is a method for proving that the terminal device to be registered is not another terminal device by using a password when registering in the server device. The second method is a method using a registration device that is a dedicated device for registering a communication address and terminal identification information in a server device. As an example, the registration device assigns or changes the communication address of the target terminal device and notifies the terminal device of the communication address, and also assigns the communication address assigned to the terminal device to the server device and correspondingly Terminal identification information to be registered. The function of this registration device may be provided in the server device. In this case, the communication address and the terminal identification information are registered in the data table of the own device. Of course, you may register with another server apparatus. When the registration device registers the communication address and the terminal identification information in the server device, a specific authentication operation may be performed between the registration device and the server device, which further increases the notarization of the registration information. In this way, the server device stores the communication addresses and terminal identification information of a plurality of terminal devices as a data table as shown in FIG. Also, the communication terminal device performs change registration with the server device even when the communication address or terminal identification information of the own device is changed.
The above is the terminal identification information / communication address registration method.

FIG. 8 is a diagram illustrating an example of a data table for terminal identification information / communication addresses of the server apparatuses 31 and 33.
As shown in FIG. 8, the data to be registered includes a communication address and terminal identification information corresponding to the communication address, and other information such as the date and time when the registration information was registered and the time elapsed since the registration. Further, as other information, information indicating the type of the terminal device and the location where the terminal device is installed or used, that is, terminal position information can be considered. For example, the terminal position information includes address data of the position where the terminal is installed or used, or data such as a unique number or name that does not overlap with a divided area obtained by dividing an area on the earth into a certain size. Conceivable. For example, code data corresponding to latitude and longitude can be used. Ordinarily, if there is a change registration for the registered information, the old data is deleted, but the old data may be left as a history without being deleted.

Next, when communication is performed between terminal devices in step 103 in FIG. 7, the calling device 27 starts a call operation to start communication with the communication partner device, that is, the called device 29 (FIG. 7). 6 arrow B). Specifically, an INVITE signal is transmitted to the called device 29. This INVITE signal includes the communication address of the calling device 27 and terminal identification information. The called device 29 extracts the communication address and terminal identification information of the calling device 27 from the received INVITE signal.
Next, in step 105 of FIG. 7, the call receiving device 29 transmits the terminal identification information of the call calling device 27 to the first server device 31 by using the communication address inquiry protocol, and the calling device 29 The communication address 27 is inquired (arrow C in FIG. 6). In this case, there are various methods for determining which of the plurality of server devices 31 and 33 should be inquired. The first is a method in which the communication address of the server device to be inquired is set in the terminal device in advance. The second method is to determine a server to be inquired from the communication address of the calling device or the terminal identification information. For example, the server device can be determined from a part of the terminal identification information. That is, a method is conceivable in which a server device that includes a part of the terminal identification information as the terminal identification information of the server device is determined as a server device that makes an inquiry.

The third method is to transmit the communication address of the server device registered by the calling device 27 to the called device 29 and determine the server device to be inquired by the communication address of the server device received by the called device 29. Specifically, it can be considered that the INVITE signal includes the registered communication address of the server device for transmission.
Here, a communication address answering means and a communication address inquiry means are provided, and this communication address answering means checks whether or not the received terminal identification information is registered in the data table by the first server device 31 and registers it here. If the registered data is valid, the communication address is returned to the inquiring terminal device, that is, in this case, the called device 29 (step 107 in FIG. 7: FIG. 6). Arrow F).
If the terminal identification information is not registered in the data table or is registered but the data is not valid, the communication address inquiry means sends the communication address to another server device, that is, the second server device 33. Using the inquiry protocol, terminal identification information is transmitted to inquire about the communication address (step 109 in FIG. 7: arrow D in FIG. 6).
The method for determining the second server device 33 to be inquired may be the same as the method for determining the first server device 31. Here, the case where the registered data is not valid includes, for example, a case where the registered date is older than a predetermined time.
Then, the second server device 33 refers to its own data table, checks whether the received terminal identification information is registered, and inquires if it is registered and the registered data is valid. The communication address is returned to the first server device 31 (step 111 in FIG. 7: arrow E in FIG. 6).

Further, the answer may be sent directly to the caller device of the inquiry source instead of the first server device 31. In this case, the first server device 31 knows the communication address of the called device by transmitting the communication address of the called device 29 when making an inquiry to the second server device 33. it can. Whether the registration data is valid may be determined by the inquiring side, that is, the first server device 31 or the called device 29 instead of the answering side. In this case, the reply side answers the communication address without judging the validity of the registered data. Inquiries can be made to the third server device and the Nth server device. However, a communication address inquiry limiting function such as setting an upper limit on the number of inquiries may be provided in order to prevent an infinite number of inquiries to other servers.
Here, the incoming call device 29 is provided with a communication address comparison means and a caller terminal identification information display means. The communication address comparison means compares the communication address received from the calling device with the communication address received from the server device. The result of whether or not they match is determined (step 113 in FIG. 7). The source terminal identification information display means displays the terminal identification information when both communication addresses match as a result of comparing the communication address received from the calling device with the communication address comparison means and the communication address received from the server device. When it is determined whether or not to display, at least one of the terminal identification information or the second terminal identification information corresponding to the terminal identification information is displayed on the display unit of the own apparatus (step 115 in FIG. 7). ). Whether or not to display is determined when the calling device 27 requests display of terminal identification information, when the called device 29 is set to display terminal identification information, or both conditions are The case where it has prepared is considered.

When the above conditions are met, if there is no special setting in the incoming call device 29, the incoming call device 29 displays at least one of the terminal identification information or the second terminal identification information corresponding to the terminal identification information, A 180 Ringing signal is transmitted to the calling device 27, and then normal call setting is performed (step 117 in FIG. 7). When the terminal identification information is received, if there is a special setting, that is, depending on the terminal identification information, Incoming memory function: Stores a plurality of terminal identification information. 2. Incoming call rejection function: Rejects incoming calls (incoming calls) for specific terminal identification information. 3. Communication address request function: When a communication address cannot be obtained from the server device, it requests the calling device to register with the server of the terminal identification information and place a call. 4). Ringing function of ringing signal: The ringing tone (incoming melody) is changed according to the terminal identification information. Etc. is set, the function is operated.
In addition, there is an automatic recording / recording function as another function, and in the case of specific terminal identification information, even if the answering function is not set, recording or recording is automatically performed, and specific terminal identification information Is set in its own device. The terminal identification information can be input directly from the operation unit for the setting, but the terminal identification information can be set using the terminal identification information stored in the incoming call memory function or the telephone directory function. Whether to record or to record may be determined based on the terminal identification information, or information included in the INVITE signal, that is, information about the communication (telephone, videophone, data communication, music) Alternatively, it may be determined by video distribution, news distribution by audio or video, or the like.

FIG. 9 is a system diagram of another embodiment of a source terminal identification information notification system having a source terminal identification information notification function using the IP phone or the like shown in FIG.
FIG. 10 is an operation flowchart of the source terminal identification information notification system using the IP phone shown in FIG. This operation control is mainly performed by the CPU 1 of each communication terminal device (IP telephone or the like).
In FIG. 9, when communication terminals of the communication network (IP network 35) according to the present invention communicate with communication terminals of other communication networks 39, the communication signal systems used by the respective communication networks are different. It is necessary to convert the signal system, and a device generally called a gateway device 37 is provided as a device having the function.
Further, the gateway device 37 has a function of interconnecting each other's communication network not only in the difference in the signal system of the communication network but also in the case where the provider (ISP) managing the communication network is different. There is also. Therefore, a special device is required to display the terminal identification information on the counterpart terminal device.
Therefore, the gateway device 37 first receives the terminal identification information of the calling device 27 from the calling device 27 when the calling device 27 calls the called device 29 as a communication terminal of another communication network 39. (Step 201 in FIG. 10: arrow B in FIG. 9).

Next, the gateway device 37 inquires of the server devices 31 and 33 about the communication address corresponding to the received terminal identification information (step 203 in FIG. 10: arrows C and D in FIG. 9). Next, the gateway device 37 receives the communication address and the terminal identification information from the server devices 31 and 33 (step 205 in FIG. 10: arrow EF in FIG. 9). Here, the communication address comparison means provided in the gateway device 37 compares the communication address received from the calling device 27 with the communication addresses received from the server devices 31 and 33, and determines whether or not they match ( Step 207 in FIG. If both communication addresses match, the gateway device 37 notifies the communication address and the terminal identification information of the calling device 27 to the other communication network 39 (step 209 in FIG. 10: arrow G in FIG. 9). . Then, the incoming call device 29 of the other communication network 39 receives the communication address and the terminal identification information from its own communication network 39 (step 211 in FIG. 10: arrow H in FIG. 9). Here, if necessary, the called device 29 displays at least one of the terminal identification display or the second terminal identification information corresponding to the terminal identification information (step 213 in FIG. 10). The operation after receiving the terminal identification information and the communication address of the calling means from is arbitrary.
Next, a case where the communication terminal 29 of another communication network 39 calls the communication terminal of the communication network of the present invention will be described. The other communication network 39 notifies the gateway device 37 of the communication address of the calling device 41 and the terminal identification information (arrow I in FIG. 9). The gateway device 37 has terminal identification information / communication address registration means, and at least one of the communication address of the calling device 41 of the other communication network 39 and the terminal identification information by the terminal identification information / communication address registration means. Two or more are registered in the server devices 31 and 33.

Next, the gateway device 37 performs call setting by transmitting an INVITE signal to the called device 43, and simultaneously notifies the communication address of the calling device 41 and the terminal identification information (arrow J in FIG. 9). . The called device 43 makes an inquiry to the server devices 31 and 33 for terminal identification information corresponding to the received communication address.
That is, the called device 43 sends the terminal identification information of the calling device 41 to the first server device 31 using the communication address inquiry protocol to inquire about the communication address of the calling device 41 (see FIG. 9 arrow K). In this case, there are various methods for determining which of the plurality of server devices 31 and 33 should be inquired. The first is a method in which the communication address of the server device to be inquired is set in the terminal device in advance. The second method is to determine a server to be inquired from the communication address of the calling device or the terminal identification information. For example, the server device can be determined from a part of the terminal identification information. That is, a method is conceivable in which a server device that includes a part of the terminal identification information as the terminal identification information of the server device is determined as a server device that makes an inquiry.
The third method is to transmit the communication address of the server device registered by the calling device 41 to the called device 43 and determine the server device to be inquired by the communication address of the server device received by the called device 43. Specifically, it can be considered that the INVITE signal includes the registered communication address of the server device for transmission.
Here, a communication address answering means and a communication address inquiry means are provided, and this communication address answering means checks whether or not the received terminal identification information is registered in the data table by the first server device 31 and registers it here. If the registered data is valid, the communication address is returned to the inquiring terminal device, that is, the called device 43 in this case (arrow L in FIG. 9).
If the terminal identification information is not registered in the data table or is registered but the data is not valid, the communication address inquiry means sends the communication address to another server device, that is, the second server device 33. Using the inquiry protocol, terminal identification information is transmitted to inquire about the communication address (arrow D in FIG. 9).
The method for determining the second server device 33 to be inquired may be the same as the method for determining the first server device 31. Here, the case where the registered data is not valid includes, for example, a case where the registered date is older than a predetermined time.
Then, the second server device 33 refers to its own data table, checks whether the received terminal identification information is registered, and inquires if it is registered and the registered data is valid. A communication address is returned to the first server device 31 (arrow E in FIG. 9).

Further, the answer may be directly answered not to the first server apparatus 31 but to the caller apparatus 43 as the inquiry source. In this case, the first server device 31 transmits the communication address of the called device 43 when making an inquiry to the second server device 33, so that the second server 33 knows the communication address of the called device 43. Can do. Whether the registration data is valid may be determined by the inquiring side, that is, the first server device 31 or the called device 43 instead of the answering side. In this case, the reply side answers the communication address without judging the validity of the registered data. Inquiries can be made to the third server device and the Nth server device. However, a communication address inquiry limiting function such as setting an upper limit on the number of inquiries may be provided in order to prevent an infinite number of inquiries to other servers.
Here, the incoming call device 43 is provided with a communication address comparison means and a caller terminal identification information display means. The communication address comparison means compares the communication address received from the calling device with the communication address received from the server device. The result of whether or not they match is determined. The source terminal identification information display means displays the terminal identification information when both communication addresses match as a result of comparing the communication address received from the calling device with the communication address comparison means and the communication address received from the server device. When it is determined whether or not to display, it is determined that at least one of the terminal identification information or the second terminal identification information corresponding to the terminal identification information is displayed on the display unit of the own apparatus. Whether the call should be displayed is determined when the calling device 41 requests display of the terminal identification information, when the called device 43 is set to display the terminal identification information, or both conditions are The case where it has prepared is considered.

When the above conditions are met, if there is no special setting in the called device 43, the called device 43 displays at least one of the terminal identification information or the second terminal identification information corresponding to the terminal identification information, A 180 Ringing signal is transmitted to the calling device 41, and then normal call setting is performed. When the terminal identification information is received, if there is a special setting, that is, depending on the terminal identification information, Incoming memory function: Stores a plurality of terminal identification information. 2. Incoming call rejection function: Rejects incoming calls (incoming calls) for specific terminal identification information. 3. Communication address request function: When a communication address cannot be obtained from the server device, it requests the calling device to register with the server of the terminal identification information and place a call. 4). Ringing function of ringing signal: The ringing tone (incoming melody) is changed according to the terminal identification information. Etc. is set, the function is operated.
In addition, there is an automatic recording / recording function as another function, and in the case of specific terminal identification information, even if the answering function is not set, recording or recording is automatically performed, and specific terminal identification information Is set in its own device. The terminal identification information can be input directly from the operation unit for the setting, but the terminal identification information can be set using the terminal identification information stored in the incoming call memory function or the telephone directory function. Whether to record or to record may be determined based on the terminal identification information, or information included in the INVITE signal, that is, information about the communication (telephone, videophone, data communication, music) Alternatively, it may be determined by video distribution, news distribution by audio or video, or the like.

Up to now, the description has been made on the assumption that the other communication network is an IP network. However, for example, when the other communication network is a general subscriber line network provided by NTT, another device is required.
That is, since a general telephone does not have a communication address, that is, an IP address, the terminal identification information cannot be checked from the communication address as it is. In order to solve this problem, a dummy communication address is set, and before transmitting the INVITE signal, the dummy communication address and terminal identification information notified by another communication network are registered in the server means. Thereafter, call setting is performed, communication is started, communication is terminated, and after the call is released, the gateway device 37 requests the server devices 31 and 33 to delete the dummy communication address and the terminal identification information. The requested server devices 31 and 33 are provided with a communication address / terminal identification information deleting means for deleting the dummy communication address and the terminal identification information from the data table.
In addition to the above solution, the gateway device 37 can also directly transmit terminal identification information received from another communication network to the incoming call means. In this case, the terminal identification information is transmitted by being placed on a certain area of the transmitted IP packet.

FIG. 11 is a diagram showing the structure of a SIP control packet in a specific embodiment of the present invention. As shown in FIG. 11, the SIP control packet includes an IP header, a UDP (TCP) header, and a SIP message.
FIG. 12 is a diagram showing the structure of a SIP data packet in a specific embodiment of the present invention. As shown in FIG. 12, the SIP data packet includes an IP header, a UDP header, an RTP header, and audio / image data.
FIG. 13 is a diagram illustrating the structure of a UDP datagram in a specific embodiment of the present invention. As shown in FIG. 13, the UDP datagram includes a transmission port number, a destination port number, a data length, a checksum, and data. Here, the terminal identification information transmitted from the calling device to the called device is normally included in the data part, but may be any other location.

FIG. 14 is a diagram illustrating the structure of an IP datagram used in SIP according to a specific embodiment of the present invention. As shown in FIG. 14, the configuration of the IP packet includes version information, header length information, service type information, total length information, identifier (ID), flag information, fragment offset information, survival information. It consists of time (TTL) information, protocol type information, header checksum information, source address, destination address, option, padding, and data area. Terminal identification information. The terminal identification information is usually placed in the data area, but is not limited to this.
The communication address is address information of the terminal, specifically an IP address, and other MAC addresses, and in some cases, telephone numbers. The terminal identification information is information for distinguishing the terminal from other terminals, and specifically includes telephone numbers, URLs, device numbers, device names, aliases, unique names or corresponding figures, characters, etc. Yes, in some cases, an IP address or a MAC address.
The second terminal identification information is associated with the terminal identification information on the called device, for example. When the terminal identification information is a telephone number, for example, the second terminal identification information is the telephone number. The name (name) of the owner (name holder) is terminal identification information that is arbitrarily defined on the called device with respect to the terminal identification information of the calling device.
In the description so far, the server apparatus has only described the functions related to the communication address and the terminal identification information. 323 gatekeepers may include the server device of the present application.
Further, when the communication address and the terminal identification information of the partner device are not registered in the server device, the own terminal device may have a registration request unit that requests the partner device to register.
If the server is not registered in the final server device, the server itself may have inquiry means for directly inquiring the counterpart device or registration request means for requesting registration.
Further, it is conceivable that the own terminal device has an address changing means for periodically changing the IP address for security measures such as wiretapping. For example, in an IP terminal device comprising IP address requesting means for requesting assignment of an IP address and IP packet communication means for communication using an IP packet, the IP address request is made according to a predetermined rule. The means comprises IP address change request means for requesting assignment of a new IP address using the IP packet communication means.

Specifically, there are the following examples.
-Request a change when a certain amount of traffic (packet volume) is sent and received.
-Request after a certain amount of time has passed since the previous change.
-Request change when transmission / reception of IP packet is interrupted for more than a certain time.
Request when there is an access from a device with an IP address other than the communication partner.
Requests the DHCP device to change the IP address.
-Replace multiple IP addresses you have.
As described above, the IP telephone is described as an example and SIP is used as an example of the standard protocol. There are H.323, HTTP, MEGACO, and the like, and the present invention can be implemented by other local protocols instead of the standard protocol. FIGS. 15 and 16 are diagrams showing the structure of the SIP control packet and the structure of the SIP data packet according to the present invention in the local protocol.
In addition to the IP phone, the terminal device can be applied to an IP terminal device typified by an IP video phone, an IP mobile phone, an IP mobile terminal device, an Internet fax, and the like. It can also be applied to protocols.

1 is a schematic block diagram of an IP phone embodying the present invention. It is a schematic block diagram of the IP telephone adapter which implemented this invention. 1 is a schematic block diagram of an IP videophone embodying the present invention. It is a figure which shows the protocol stack of SIP used by IP telephone etc. FIG. It is one protocol figure of the communication model of SIP used by IP telephone etc. FIG. 2 is a system diagram of a source terminal identification information notification system having a source terminal identification information notification function using the IP phone or the like shown in FIG. 1. It is an operation | movement flowchart of the transmission origin terminal identification information notification system using the IP telephone shown in FIG. It is a figure which shows one Example of the data table for terminal identification information and a communication address of the server apparatuses 31 and 33. FIG. FIG. 7 is a system diagram of another embodiment of a source terminal identification information notification system having a source terminal identification information notification function using the IP phone or the like shown in FIG. 1. FIG. 10 is an operation flowchart of the caller terminal identification information notification system using the IP phone shown in FIG. 9. FIG. It is a figure which shows the structure of the packet for SIP control in the specific Example of this invention. It is a figure which shows the structure of the packet for SIP data in the specific Example of this invention. It is a figure which shows the structure of the UDP datagram in the specific Example of this invention. It is a figure which shows the structure of the IP datagram used by SIP in the specific Example of this invention. It is a figure which shows the structure of the packet for SIP control of this invention in a local protocol. It is a figure which shows the structure of the packet for SIP data of this invention in a local protocol.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... CPU, 3 ... ROM, 5 ... RAM, 7 ... Operation input / display part, 9 ... Handset, 11 ... Call circuit, 13 ... IP part, 17 ... Internal bus, 21 ... Image processing circuit, 23 ... Image display part , 25 ... Camera, 27 ... Calling device, 29 ... Calling device, 31 ... First server device, 33 ... Second server device, 35 ... IP network, 37 ... Gateway device, 39 ... Communication network, 41 ... Calling device, 43 ... Calling device

Claims (20)

Server means having a data table composed of a communication address and terminal identification information corresponding thereto, IP calling means for making a call using an IP packet, and call receiving means for receiving an IP packet for calling A source terminal identification information notification system in a network system,
The calling means transmits its own communication address and terminal identification information to the called means, and the called means receives the communication address and terminal identification information of the calling means and receives the received terminal identification information. The server means inquires of the server means for the communication address corresponding to the terminal identification information of the calling means received from the incoming call means and the searched data address. A communication address is returned to the incoming call means, and the incoming call means comprises communication address comparison means for comparing the communication address received from the server means with the communication address received from the calling means, and the communication address comparison If both communication addresses match as a result of comparing both the communication addresses by the means, the incoming call means is Origination terminal identification information notification system comprising the source terminal identification information display means for displaying at least one of the second terminal identification information corresponding to the terminal identification information and the terminal identification information.   An incoming call apparatus comprising the incoming call means according to claim 1.   A server device comprising the server means according to claim 1.   4. The server device according to claim 3, wherein when there is an inquiry about the communication address corresponding to the terminal identification information, and there is no terminal identification information in the data table, communication for making an inquiry to the second server means A first server device comprising an address inquiry means.   5. The first server device according to claim 4, wherein the communication address corresponding to the terminal identification information from the first server means is answered with a corresponding communication address in the data table of the own device. A second server device comprising a communication address answering means.   A calling device comprising the calling means according to claim 1.   2. The call origination device according to claim 1, further comprising terminal identification information / communication address registration means for registering at least one of the communication address and the terminal identification information of the calling means or the called means in the server means. Former terminal identification information notification system.   Further, it comprises terminal identification information / communication address registration means for registering at least one of the communication address and terminal identification information of the calling means or the called means in the server means immediately before starting communication. The transmission source terminal identification information notification system according to claim 1 or 7.   The terminal identification information / communication address registration unit is configured to send the terminal identification information to the server unit when at least one of the communication address or the terminal identification information of the calling unit or the calling unit is changed. Alternatively, the source terminal identification information notification system according to claim 7 or 8, wherein the communication address is changed and registered.   10. A registration apparatus comprising the terminal identification information / communication address registration means according to claim 7, 8 or 9.   The calling device according to claim 6, further comprising the terminal identification information / communication address registration means according to claim 7, 8 or 9.   The incoming call apparatus according to claim 2, further comprising the terminal identification information / communication address registration means according to claim 7, 8 or 9.   The server device according to claim 3, 4 or 5, further comprising the terminal identification information / communication address registration means according to claim 7 or 8 or 9.   A terminal device comprising the calling means and the incoming call means according to claim 1.   A terminal device comprising the calling unit, the incoming unit, and the server unit according to claim 1.   Further, gateway means having a communication signal system conversion function for performing communication with a communication terminal connected to another communication network having a different communication signal system is provided, and the gateway means is configured such that the calling means is the other communication unit. When making a call to a communication terminal of a network, the communication unit receives the terminal identification information of the calling unit and inquires of the server unit about a communication address corresponding to the received terminal identification information, while receiving the communication received from the server unit A communication address comparing means for comparing the address and the communication address received from the calling means, and as a result of comparing both the communication addresses by the communication address comparing means, if both communication addresses match, Communication address / terminal identification information for notifying the other communication network of terminal identification information and communication address of the calling means Claim 1 or 7 or 8 or 9 origination terminal identification information notification system characterized by comprising a knowledge unit.   Further, the gateway means registers terminal identification information / communication in which at least one or more of the communication address of the calling means of the other communication network received from the other communication network and the terminal identification information are registered in the server means. The system according to claim 16, further comprising an address registration unit.   Further, the gateway means registers at least one or more of the communication address of the calling means of the other communication network and the terminal identification information in the server means by the terminal identification information / communication address registration means, 18. The source terminal identification information notification system according to claim 17, wherein the communication address and the terminal identification information are transmitted to an incoming call means.   19. A gateway device comprising the gateway means according to claim 16, 17 or 18.   20. The gateway device according to claim 19, further comprising server means according to claim 1.

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