JP2004194246A - Internet protocol terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an Internet protocol (IP) terminal device which prevents malicious intrusion of a third party beforehand and can easily identify whether he/she is the person himself/herself. <P>SOLUTION: This IP terminal device has a sender number detecting part 9 for detecting a notified sender number and a sender number registering part 10 for registering one sender number or more in advance and is connected to a line to which a telephone number for IP telephone is assigned. The IP terminal device performs communication when a sender number detected by the sender number detecting part 9 matches with the sender number registered in the sender number registering part 10, and rejects communication when the detected sender number does not match with the registered sender number. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an IP terminal device that performs voice communication and data communication using an IP address such as a personal computer, a network printer, and a facsimile.
[0002]
[Prior art]
In recent years, IP telephone services have been started with the spread of broadband access networks to IP networks such as xDSL and cable Internet. The IP telephone service is a service for making a voice call using an IP (Internet Protocol) network technology in a part or the whole of a network.
[0003]
An example of a network configuration for realizing the IP telephone function will be described with reference to FIG. As shown in FIG. 8, a PC and an IP telephone are connected to FTTH, a PC and a telephone with a VoIP adapter are connected to an ADSL line, and a telephone is connected to a telephone line.
[0004]
As a patent document that discloses a technique similar to the present invention, a patent document 1 disclosed below is known.
[0005]
[Patent Document 1]
Japanese Unexamined Patent Publication No. Hei 2-260739 [Patent Document 2]
JP 10-32633 A
The invention disclosed in JP-A-2-260739 as Patent Document 1 is as follows.
In a terminal device that can connect to the ISDN network and identify the other party's telephone number by notifying the calling number before answering the incoming call, set the calling party's "calling number" or "calling subaddress" in advance to the receiving device. The caller is compared with the "caller identification number" for identifying the caller, and if they match, a call is made to the transfer destination telephone number corresponding to the "caller number" or "caller sub-address". It is characterized in that a person is identified, sorted and transferred.
[0007]
The invention disclosed in Japanese Patent Application Laid-Open No. H10-32633 as Patent Document 2 provides an answering machine that enables a remote party who has registered a message message to perform a remote operation such as reconfirmation or deletion of the message message. It is an object.
For this reason, the answering machine system disclosed in Japanese Patent Application Laid-Open No. 10-32633 is an answering machine that stores a message message received from the other party via a communication line when the user is absent in a storage means. Identification information setting means for setting predetermined identification information; notifying means for notifying the other party of the identification information set by the identification information setting means; and a predetermined means for associating a message message received and stored in the storage means with the identification information. Management information setting means for setting the management information of the message, and when there is a reproduction request of the message message specifying the identification information from the partner, the message message corresponding to the identification information is stored from the storage means based on the identification information and the management information. Control means for reading and transmitting to the other party.
[0008]
[Problems to be solved by the invention]
However, the fact that connection to an IP network has been made due to the development of network technology causes a problem that a malicious third party is accepted. Accepting the intrusion of a malicious third party can lead to problems such as program destruction, extinction, and theft of confidential information. For example, the device that can be connected to a line to which an IP telephone number is assigned is not limited to an IP telephone. Therefore, when a PC + IP telephone is connected, there is a risk that data stored in a hard disk of the PC may be stolen. In addition, although it is possible to guard a specific protocol by a router (firewall), there is also a risk that the terminal may first pass through the IP telephone protocol and then enter the terminal using another protocol.
[0009]
In addition, when a user located at a remote place uses a specific function provided in the IP terminal device, it is necessary to identify whether or not the user is himself / herself on the side of the IP terminal device. As a method for identifying whether or not the user is an individual, an identification character string is registered in the device in advance, and if the input character string matches a previously registered character string, it is determined that the user is the person, There is a method of permitting a specific operation of the device. However, in such a method, an input error may occur in the input for transmitting the identification character string, and the operability is impaired such that it takes a long time to input.
[0010]
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an IP terminal device that can prevent a third malicious intrusion beforehand and can easily identify whether or not the user is the principal. And
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 has a caller number detecting means for detecting a notified caller number, and a caller number registering means for registering one or more caller numbers in advance. An IP terminal device connected to a line to which a telephone number for an IP telephone is allocated, wherein the caller number detected by the caller number detecting means and the caller number registered in the caller number registering means are If they match, communication is performed, and if they do not match, communication is rejected.
[0012]
According to a second aspect of the present invention, in the first aspect of the invention, the caller number registering means registers a telephone number selected from telephone numbers registered in the telephone directory means as a caller number. It is characterized by the following.
[0013]
According to a third aspect of the present invention, in the first or second aspect, the caller number is a telephone number of an IP telephone.
[0014]
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the caller number detected by the caller number detecting means and the caller number registered in the caller number registering means are stored. If they match, a specific function provided in the IP terminal device is made available.
[0015]
According to a fifth aspect of the present invention, in the fourth aspect, the specific function is a function of at least one of transmitting and receiving information data with a communication partner.
[0016]
The invention according to claim 6 is the invention according to claim 4, wherein the specific function is a function of receiving voice information from a communication partner.
[0017]
According to a seventh aspect of the present invention, in the fourth aspect, the specific function is a function of performing at least one of transmission and reception of facsimile information with a communication partner.
[0018]
According to an eighth aspect of the present invention, in the fourth aspect, the specific function is a function of performing at least one of transmission and reception of the HTML file information with a communication partner.
[0019]
According to a ninth aspect of the present invention, in the fourth aspect, the specific function is a function of at least one of transmission and reception of digital music information with a communication partner.
[0020]
According to a tenth aspect of the present invention, in the fourth aspect, the specific function is a function of performing at least one of transmission and reception of still image information with a communication partner.
[0021]
According to an eleventh aspect of the present invention, in the fourth aspect, the specific function is a function of performing at least one of transmission and reception of moving image information with a communication partner.
[0022]
According to a twelfth aspect of the present invention, in the fourth aspect, the specific function is a function of performing at least one of transmission and reception of at least one of software and a program with a communication partner. And
[0023]
According to a thirteenth aspect, in the fourth aspect, the specific function is a function of receiving digitized voice information from a communication partner.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the IP terminal device of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 to FIG. 7 show an embodiment according to the IP terminal device of the present invention.
[0025]
First, the configuration of the present embodiment will be described with reference to FIG. As shown in FIG. 1, the IP terminal device according to the present embodiment includes a CPU (Central Processing Unit) 2, an EPROM (Erasable and Programmable Read Only Memory) 3, a storage unit 4, a specific function license unit 5, It has a specific function use prohibiting section 6, a modem section 7, a communication section 8, a caller number detecting section 9, a caller number registering section 10, a caller number checking section 11, and a VoIP processing section 12. are doing.
[0026]
The CPU 2 controls the entire system or the entire IP terminal device.
The EPROM 3 is a rewritable non-volatile memory, and stores firmware for controlling this device or the entire system, data that must be stored for system control, and the like. The CPU 2 operates according to a program written in the EPROM 3.
[0027]
The storage unit 4 has a work area necessary for the operation of the CPU 2 formed therein, and is used by the CPU 2 as a temporary storage device for data. Further, it functions as a buffer buffer for the EPROM 3 and stores or stores information necessary for other devices.
[0028]
When the caller number notified from the network side matches the caller number registered in advance, the specific function use licensing unit 5 confirms the identity of the caller and identifies the user by using the identification function provided in the IP terminal device. Enable the function of
[0029]
The specific function use prohibiting unit 6 is a functional unit that rejects communication when the caller number notified from the network does not match the caller number registered in advance.
[0030]
The modem unit 7 converts a digital signal from inside the IP terminal device into an analog signal, and converts an analog signal of a communication line into a digital signal. Various lines such as xDSL, optical cable, and ISDN can be applied to a telecommunication line connecting the IP terminal device of the present embodiment to a network. Therefore, a modem capable of realizing communication through the electric communication line is applied to the modem.
[0031]
The communication unit 8 controls communication such as detection of a call signal at the time of an incoming call, transmission of a call signal at the time of an outgoing call, transmission and reception of a communication, and a call.
[0032]
The caller number detector 9 detects and stores the caller number notified from the network side (outside the device).
[0033]
As shown in FIG. 2, the caller number registration unit 10 records the name, telephone number, e-mail address, and the like of the communication partner, and also records the telephone number permitted to use the specific function. The telephone number includes a telephone number such as a mobile phone and an IP phone in addition to the telephone number of the fixed telephone. The caller number registration unit 10 may be provided separately from a telephone directory in which telephone numbers are registered, or may be a telephone number selected from telephone numbers registered in the telephone directory as a registered caller number. The information may be registered in a book.
[0034]
The caller number checking unit 11 checks whether the caller number notified from the line side matches the caller number registered in advance.
[0035]
The VoIP processing unit 12 performs predetermined processing on audio data input from the microphone, packetizes the data, and outputs the packetized data to a line network. Further, it performs predetermined processing on the packet received from the line network and outputs audio data to a speaker.
[0036]
Here, a specific processing procedure of the VoIP processing unit 12 will be described with reference to FIG.
As shown in FIG. 3, the VoIP processing unit 12 includes a PCM encoding unit 22, an audio compression unit 23, and a packetization unit 24 on the transmission side, and a packet decomposition unit 25 and an audio Each unit of the decompression unit 26 and the PCM decoding unit 27 is provided.
[0037]
Audio input by a microphone or the like is converted into a digital signal by the AD converter 21. The PCM encoding unit 22 encodes the audio data converted into the digital signal using the PCM encoding method. The audio compression section 23 converts the PCM-encoded audio data into G.264 audio data. 729, G.C. 7111; Compression using a compression method such as 728. The compressed voice data is divided into packets by the packetizer 24 and transmitted to the line network side. The packet input from the line side is decomposed by the packet decomposing unit 25 from the packet. The decomposed data is subjected to decompression processing by the audio decompression unit 26 and decoded by the PCM decoding unit 27. The decoded audio data is converted to analog audio by a DA converter 28 and output to a speaker 29.
[0038]
Next, the configuration of a packet carrying audio data will be described with reference to FIG. As shown in FIG. 4, the configuration of the packet includes 4-bit version information, 4-bit Internet header length information, 8-bit service type information, 16-bit total length information, 16-bit identifier, and 3-bit flag information. , 13-bit fragment offset information, 8-bit lifetime information, 8-bit protocol type information, 16-bit header checksum information, 32-bit source address, 32-bit destination address, options, padding, data area The telephone number information of the communication partner is placed in one of the areas where the data is placed. The telephone number information is usually placed in the data area, but is not limited to this.
[0039]
Next, voice communication via the IP network will be described with reference to FIG.
For example, when the IP telephone number of the IP telephone terminal on the IP network is input from the fixed telephone shown in FIG. 5, the gateway device 30 obtains an IP address corresponding to the input IP telephone number by ENUM (Telephone). An inquiry is made to a DNS (Domain Name System) server 40 that supports Number Mapping. The ENUM-compliant DNS server 40 notifies the gateway device 30 of the address and port number of the corresponding SIP server 50 and the IP address from the telephone number. The gateway device 30 uses the acquired address to make a connection request to the SIP server 50, thereby realizing a call with the desired IP terminal device 1.
[0040]
In an environment where an IP telephone number is allocated to devices connected to the IP network and each device makes a connection request using this IP telephone number and performs a voice call, the IP terminal device 1 of the present embodiment receives the connection request. Then, the caller number of the device that has made the connection request is detected, and it is confirmed whether or not the detected caller number is a caller number registered in advance. If the detected caller number is a caller number registered in advance, a connection request is accepted, and a specific function provided in the IP terminal device is enabled. If the detected caller number is not the caller number registered in advance, the connection request is rejected. In this manner, the IP terminal device according to the present embodiment can eliminate a malicious connection request from the network and solve problems such as destruction and disappearance of a program, and secret information being stolen.
[0041]
In addition, for a connection request from a caller number registered in advance, the connection request is immediately accepted, and a specific function provided in the IP terminal device is enabled. Specific functions provided in the IP terminal device include transmitting voice information, facsimile information, HTML file information, digital music information, still images, moving images, software or programs, digitized voice information, and the like to and from a communication partner, And / or a receiving function. By enabling the use of such a specific function, the user can remotely control the IP terminal device from a remote place, thereby improving the usability of the user.
[0042]
When a connection request from a line is received, the IP terminal device automatically detects the caller number of the device that has made the connection request and compares the caller number with a pre-registered caller number. It is possible to prevent a user from having trouble inputting the identification information of the device to use the specific function, and the occurrence of troubles such as inputting incorrect identification information.
[0043]
Here, a communication sequence between the SIP server 50 and the IP terminal device 1 shown in FIG. 5 will be described with reference to FIG.
First, in the case of normal reception, when a connect signal for requesting connection is sent from the SIP server 50, the caller number (fixed telephone number, mobile telephone number, IP address, IP phone number etc.) and compares it with the caller number registered in the caller number registration section 9. When recognizing that the caller number of the other party is a number registered in the caller number registration section 9, the IP terminal device 1 sends back an ACK signal to the SIP server 50 side. The SIP server 50 that has received the ACK signal subsequently transmits a call signal and receives from the IP terminal device 1 a communication ready signal indicating that communication preparation has been completed.
[0044]
Next, a case where communication is rejected by the IP telephone number of the accessed party will be described.
In this case as well, when a connection signal requesting a connection is sent from the SIP server 50, the caller number (fixed telephone number, mobile telephone number, IP address, IP telephone number, etc.) of the destination machine that issued the connection request from this connection signal is transmitted. Is detected and compared with the caller number registered in the caller number registration section 9. When recognizing that the caller number of the counterpart device is a number registered in the caller number registration unit 9, the IP terminal device 1 transmits a NACK signal for rejecting communication to the SIP server 50 to perform communication with the counterpart device. abort.
[0045]
Next, the operation procedure of the IP terminal device will be described with reference to the flowchart shown in FIG.
When receiving the incoming call (step S1 / YES), the IP terminal device 1 detects the caller number of the destination of the connection request by the caller number detector 9 (step S2). Next, the caller number checking unit 11 checks whether the detected caller number matches the caller number registered in the caller number registration unit 10 in advance (step S3).
[0046]
As a result of the inspection by the caller number inspection unit 11, if the caller number of the destination of the connection request is not registered in the caller number registration unit 10 (step S3 / NO), the specific function use prohibition unit 6, the use of the specific function is prohibited, and the communication with the partner machine is terminated (step S5).
[0047]
Further, as a result of the inspection by the caller number inspection unit 11, if the caller number of the destination of the connection request is registered in the caller number registration unit 10 (step S3 / YES), the connection request is not received. In addition to connecting the line with the partner machine, the use of the specific function is permitted by the specific function use permitting unit 5 (step S4). Note that the specific function includes transmitting and / or receiving voice information, facsimile information, HTML file information, digital music information, still images, moving images, software or programs, digitized voice information, and the like to and from a communication partner. Function.
[0048]
As described above, in the present embodiment, when the caller number detected by the caller number detection unit 9 and the caller number registered in the caller number registration unit 10 match, communication is performed in advance. You can communicate with a specific registered partner. If the detected caller number is not the caller number registered in advance, the connection request is rejected. In this manner, the IP terminal device according to the present embodiment can eliminate a malicious connection request from the network and solve problems such as destruction and disappearance of a program, and secret information being stolen.
[0049]
In addition, for a connection request from a caller number registered in advance, the connection request is immediately accepted, and a specific function provided in the IP terminal device is enabled. By enabling the use of the specific function, the user can remotely control the IP terminal device from a remote place, and the usability of the user can be improved.
[0050]
When a connection request from a line is received, the IP terminal device automatically detects the caller number of the device that has made the connection request and compares the caller number with a pre-registered caller number. It is possible to prevent a user from having trouble inputting the identification information of the device to use the specific function, and the occurrence of troubles such as inputting incorrect identification information.
[0051]
The above-described embodiment is a preferred embodiment of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the description has been made using SIP as the protocol of the IP telephone. However, the protocol of the IP telephone is not limited to this. 323, MGCP (Media Gateway Control), Megaco (Media Gateway Control), or the like. MGCP is described in RFC2705, SIP is described in RFC3261, and Megaco is described in RFC3015.
[0052]
【The invention's effect】
As is apparent from the above description, the present invention performs communication when the caller number detected by the caller number detection means matches the caller number registered in the caller number registration means. Communication with a specific partner registered in advance. If the detected caller number is not the caller number registered in advance, the connection request is rejected. In this manner, the IP terminal device according to the present embodiment can eliminate malicious connection requests from the network and solve problems such as destruction and disappearance of programs, and secret information being stolen.
[0053]
In addition, for a connection request from a caller number registered in advance, the connection request is immediately accepted, and a specific function provided in the IP terminal device is enabled. By enabling the specific function, the user can remotely control the IP terminal device from a remote place, and the usability of the user can be improved.
[0054]
Also, when a connection request is received from the line, the IP terminal device automatically detects the caller number of the device that has made the connection request and compares it with a pre-registered caller number, so that the user is at a remote place. It is possible to prevent the user from having to input the identification information of the device in order to use the specific function, and to prevent inconvenience such as inputting the incorrect identification information.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment according to the present invention.
FIG. 2 is a diagram showing a configuration of a caller number registration unit.
FIG. 3 is a block diagram illustrating a configuration of a VoIP processing unit.
FIG. 4 is a diagram showing a configuration of a packet.
FIG. 5 is a diagram for explaining voice communication using an IP address.
FIG. 6 is a diagram showing a communication protocol with a SIP server.
FIG. 7 is a flowchart showing an operation procedure.
FIG. 8 is a diagram for explaining voice communication using an IP address.
[Explanation of symbols]
1 IP terminal device 2 CPU
3 EPROM
Reference Signs List 4 storage unit 5 specific function use licensing unit 6 specific function use prohibition unit 7 modem unit 8 communication unit 9 caller number detection unit 10 caller number registration unit 11 caller number inspection unit 12 VoIP processing unit

Claims (13)

It has a caller ID detecting means for detecting the announced caller ID, and a caller ID registration means for registering one or more caller IDs in advance, and is connected to a line to which a telephone number for an IP telephone is allocated. IP terminal device,
If the caller number detected by the caller number detection means matches the caller number registered in the caller number registration means, communication is performed.If they do not match, communication is rejected. Characteristic IP terminal device. The caller number registration means,
2. The IP terminal according to claim 1, wherein a telephone number selected from telephone numbers registered in the telephone directory is registered as a caller number. 3. The IP terminal device according to claim 1, wherein the caller number is a telephone number of an IP telephone. When the caller number detected by the caller number detecting means matches the caller number registered in the caller number registering means, the specific function provided in the IP terminal device is enabled. The IP terminal device according to any one of claims 1 to 3, wherein: The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of information data with a communication partner. The IP terminal device according to claim 4, wherein the specific function is a function of receiving voice information from a communication partner. 5. The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of facsimile information with a communication partner. The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of HTML file information with a communication partner. 5. The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of digital music information with a communication partner. The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of still image information with a communication partner. The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of moving image information with a communication partner. The IP terminal device according to claim 4, wherein the specific function is a function of performing at least one of transmission and reception of at least one of software and a program with a communication partner. The IP terminal device according to claim 4, wherein the specific function is a function of receiving digitized voice information from a communication partner.

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