JP2009246687A - Communication system, communication analysis device and communication analysis method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication analyzing device and a communication analyzing method, capable of more correctly analyzing the communication state of a communication terminal for performing SIP communication without depending on a previously stored communication log. <P>SOLUTION: The communication analyzing device includes: transmitting a communication message of a communication request destined to a communication terminal, receiving a communication message as response to the transmitted communication message, comparing the received response communication message with previously stored determination conditions, and outputting communication state information previously stored in association with the matching determination conditions. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication system, a communication analysis apparatus, and a communication analysis method for analyzing a communication state of a communication terminal that performs communication based on SIP.

  In recent years, telephone communication based on SIP (Session Initiation Protocol) is performed on an IP network. FIG. 7 is a diagram illustrating the concept of a conventional SIP communication system. A general SIP communication system is connected to an IP telephone network 601 and is transmitted to a telephone terminal 604 (telephone terminal 604-1, telephone terminal 604-2, telephone terminal 604-3) via the IP telephone network 601. SIP server device 602 (SIP server device 602-1, SIP server device 602-2, SIP server device 602-3) that performs call control of SIP communication by relaying messages and information input / output to / from telephone terminal 604 A terminal adapter (TA) 603 (terminal adapter 603-1, terminal adapter 603-2, terminal adapter 603-3) that performs transmission / reception and protocol conversion is configured.

The SIP server device 602 manages the state of the telephone terminal 604. For example, when the telephone terminal 604-1 managed by the SIP server apparatus 602-1 makes a communication request destined for the telephone terminal 604-2, the SIP server apparatus 602-1 transmits and receives a communication message by SIP with the SIP server apparatus 602-2. Establish communication. When the SIP server device 602-1 establishes communication with the SIP server device 602-2, the telephone terminal 604-1 and the telephone terminal 604-2 start a call via the IP telephone network 601. Here, the SIP server device 602-1 determines that the SIP server 602-1 is based on a communication request from the telephone terminal 604-3 to the telephone terminal 604-1 while the telephone terminal 604-1 is talking to the telephone terminal 604-2. When a communication message transmitted from the device 602-3 is received, the telephone terminal 604-1 transmits a BT (Busy Tone) indicating that a call is in progress to the SIP server device 602-3.
Patent Document 1 proposes a method in which the same service as No. 113 (phone failure check) and No. 114 (busy check) provided by the conventional fixed telephone service is performed by SIP communication. Here, when BT is responded to the communication request to the telephone terminal, the communication status of the telephone terminal is inquired to the SIP server device that manages the communication status of the telephone terminal.
JP 2006-165919 A

  However, the telephone terminal information managed by the SIP server device as described above may not always match the actual communication state of the telephone terminal, and the communication state of the telephone terminal cannot be distinguished in detail. For example, if the telephone terminal 604-1 is not making a call but the handset remains disconnected, the SIP server device 602-1 cannot know the state, and the SIP server device 602-1 is in the meantime. In response to the inquiry about the communication status of the telephone terminal 604-1, information indicating that the telephone terminal 604-1 is idle is replied, and an appropriate response according to the state of the telephone terminal 604-1 is given. I can't say. In addition, for example, when the terminal adapter 603-1 is disconnected from the line and communication with the telephone terminal 604-1 cannot be performed, the SIP server device 602-1 similarly displays communication state information corresponding to the state. It cannot be provided.

  As described above, in the conventional technology, in SIP communication, when a communication request is made to the communication terminal and BT is responded, by inquiring the SIP server device, when the communication request destination telephone terminal is busy, The communication state cannot be separated, such as when the handset of the communication request destination telephone terminal is disconnected, or when the line between the communication request destination SIP server apparatus and the telephone terminal is considered to be faulty. Here, it is desirable that more detailed information can be acquired for the communication state of the telephone terminal of the communication destination. In addition, when a log of communication messages transmitted and received by the SIP server device is stored in the SIP server device, a method in which the operator identifies the communication state of the telephone terminal by analyzing the log can be considered. Such analysis is time consuming and cumbersome, and it may be determined that the communication state differs depending on the skill level of the operator. For example, the reliability of the determination result is not stable. In addition, since such a communication state causes some time lag when reading and analyzing a communication log stored in advance, it is desirable to determine the latest communication state as much as possible.

  The present invention has been made in view of such a situation, and a communication analysis device and a communication analysis method for more accurately analyzing the communication state of a communication terminal that performs SIP communication without using a communication log stored in advance. I will provide a.

  In order to solve the above-described problem, the present invention is connected to a communication terminal that performs communication based on SIP, and a SIP server device that relays a communication message that is transmitted and received by the communication terminal and includes information for identifying a transmission source. The communication analysis apparatus includes a communication request unit that transmits a communication request communication message addressed to a communication terminal, and a response corresponding to the communication message transmitted by the communication request unit. A communication message receiving unit that receives a communication message, a communication condition received by the communication message receiving unit, a determination condition indicated by a communication message that specifies a communication state of the communication terminal, and communication of the communication terminal specified by the determination condition A determination condition storage unit preliminarily stored in association with communication state information indicating a state, and a communication message receiving unit The communication message to be transmitted is compared with the determination condition stored in advance in the determination condition storage unit, and when a determination condition matching the communication message is detected, the determination condition storage unit associates with the detected determination condition. A determination unit that outputs communication state information of a communication terminal stored in advance.

  Further, according to the present invention, the communication request unit of the communication analysis device transmits a communication request communication message including information indicating that it is a test communication message, and the communication terminal is transmitted from the communication analysis device. A communication request receiving unit that receives a communication request communication message, a test communication request determining unit that determines whether the communication message received by the communication request unit includes information indicating that it is for testing, and a test When the communication request determining unit determines that the communication message does not include information indicating that the communication message is for testing, a ringing sound is output, while the communication request determining unit for testing indicates that the communication message is for testing. And an output unit that does not output a ringing tone when it is determined that the information indicating the information is included.

  Further, according to the present invention, in the determination condition storage unit of the communication analysis device, a determination condition indicated by a communication message indicating a blockage with a communication terminal as a transmission source, and a communication indicating that the receiver included in the communication terminal is disconnected The state information is stored in association with each other.

  Further, according to the present invention, the determination condition storage unit of the communication analysis device is in a state where the determination condition indicated by the communication message indicating a timeout with the SIP server device as a transmission source is not connected to the SIP server device and the communication terminal. Or the communication state information indicating the state of both of them is stored in association with one another, or the state between the SIP server device and the communication terminal is in a broken state. And

  Further, according to the present invention, in the determination condition storage unit of the communication analysis apparatus, a determination condition indicated by a communication message indicating a line block originating from the SIP server apparatus and a communication state indicating that the communication terminal is busy Information is stored in association with each other.

  Further, according to the present invention, whether the determination condition storage unit of the communication analysis device is in a state where the determination condition indicated by the communication message indicating a server failure originating from the SIP server device and the SIP server device is in failure Or communication state information indicating either or both of the states in which communication with the communication terminal cannot be performed due to congestion is stored.

  The present invention also relates to a communication analysis device connected to a SIP server device that relays a communication message that is transmitted / received by a communication terminal that performs communication based on SIP and includes information for identifying a transmission source. A communication request unit that transmits a communication message of a communication request, a communication message reception unit that receives a communication message of a response corresponding to the communication message transmitted by the communication request unit, and a communication message that the communication message reception unit receives A determination condition storage unit in which a determination condition indicated by a communication message specifying the communication state of the communication terminal and a communication state information indicating the communication state of the communication terminal specified by the determination condition are associated and stored in advance The communication message received by the communication message receiving unit is compared with the determination condition stored in advance in the determination condition storage unit. And a determination unit that outputs communication state information of the communication terminal that is associated with the detected determination condition and stored in advance in the determination condition storage unit when a determination condition that matches the communication message is detected. Is a communication analysis device characterized by the above.

  Further, the present invention is a communication message that is transmitted / received by a communication terminal that performs communication based on SIP and is connected to a SIP server device that relays a communication message including information for identifying a transmission source. A determination condition storage unit in which a determination condition indicated by a communication message specifying the communication state of the communication terminal and a communication state information indicating the communication state of the communication terminal specified by the determination condition are associated and stored in advance; A communication analysis method using the communication analysis apparatus, wherein the communication request unit transmits a communication request communication message destined for the communication terminal, and the communication message reception unit transmits the communication message transmitted by the communication request unit. Receiving a communication message of a response corresponding to the communication message received by the communication message receiving unit. And a determination condition that is stored in advance in the determination condition storage unit, and if a determination condition that matches the communication message is detected, the determination condition is associated with the detected determination condition and stored in advance in the determination condition storage unit Outputting a communication status information of a communication terminal that is in communication.

  As described above, according to the present invention, the communication analysis apparatus receives a response communication message corresponding to a communication request communication message destined for the communication terminal, and stores the received response communication message in advance. The communication state information stored in advance in association with the matching determination condition is output, so that the communication state of the communication terminal performing SIP communication can be determined. Become.

  Further, according to the present invention, the communication analysis device transmits a communication request communication message including information indicating that it is a test communication message, and the communication terminal receives a test message in the received communication request communication message. If it is determined that information indicating that the communication terminal is included, the incoming call is not output. For example, the communication message is transmitted and received without ringing the communication terminal, and the communication state of the communication terminal is determined. It becomes possible.

  In addition, according to the present invention, the determination condition indicated by the communication message indicating the line block with the communication request destination communication terminal as the transmission source corresponds to the communication state information indicating that the handset included in the communication terminal is disconnected. Since it has been added and stored, it is possible to determine that the handset provided in the communication terminal is disconnected when a communication message indicating a line blockage is sent from the communication terminal that is the communication request destination. .

  Further, according to the present invention, the determination condition indicated by the communication message indicating the timeout with the SIP server device as the transmission source is not connected to the SIP server device and the communication terminal, or the SIP server device communicates with the SIP server device. Since the communication status information indicating either or both of the states of the line with the terminal is associated and stored, the SIP server device is set as the transmission source. When a communication message indicating a timeout has been sent, the SIP server device and the communication terminal are not connected, or the line between the SIP server device and the communication terminal is in a broken state It becomes possible to judge.

  Further, according to the present invention, the determination condition indicated by the communication message indicating the line blockage originating from the SIP server device and the communication status information indicating that the communication terminal is busy are stored in association with each other. As a result, the communication terminal can determine that a call is in progress when a message indicating a line block with the SIP server device as the transmission source has been transmitted.

  In addition, according to the present invention, it is not possible to make a call with a communication terminal due to a determination condition indicated by a communication message indicating a server failure originating from the SIP server device and a state in which the SIP server device has failed or due to congestion. Since the communication status information indicating either or both of the statuses is stored in association with each other, a communication message indicating a server failure having the SIP server device as a transmission source has been transmitted. In this case, it is possible to determine that the SIP server device is in a state of failure or a state in which communication with the communication terminal cannot be performed due to congestion.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a communication system according to the present embodiment.
The communication system according to the present embodiment includes a communication analysis device 100, a communication terminal 200-1, a SIP server device 300, and a communication terminal 200-2.

  The communication terminal 200-1 transmits a communication state determination request for a specific communication terminal to the communication analysis apparatus 100. In the present embodiment, the communication terminal 200-1 is a telephone terminal that has received a BT as a response from the SIP server device 300 when making a communication request addressed to the telephone terminal 500. A communication state determination request for the telephone terminal 500 is made. In addition, the communication terminal 200-1 transmits a determination request including identification information (for example, a telephone number) of the determination request target telephone terminal 500 to the communication analysis apparatus 100 according to information input from the user.

  The SIP server device 300 is a computer device that controls the SIP communication of the communication terminal and manages the communication state of the connected subordinate communication terminal. Although FIG. 1 illustrates an example in which the SIP server device 300 manages the communication state of one telephone terminal 500, a plurality of telephone terminals 500 may be managed. The SIP server device 300 receives a SIP communication message (for example, INVITE) destined for the telephone terminal 500 to be managed, and according to the information indicating the communication state of the telephone terminal 500 stored in its storage area, Controls transmission and reception of communication messages. For example, when the telephone terminal 500 is in a call, a response communication message including a response code (486) indicating that the call is in progress is transmitted to the communication analyzing apparatus 100. The requested communication message is transferred to the terminal adapter 400.

The communication terminal 200-2 includes a terminal adapter 400 and a telephone terminal 500, and performs communication based on SIP communication control of the SIP server device 300.
The terminal adapter (hereinafter also referred to as TA) 400 performs transmission / reception of voice information transmitted / received to / from the telephone terminal 500 and protocol conversion, and includes a communication request reception unit 410 and a test communication request determination unit 420. The communication request receiving unit 410 receives a communication message transmitted from the communication request unit 150 of the communication analysis device 100 and transferred by the SIP server device 300. The test communication request determination unit 420 determines whether the communication request communication message received by the communication request reception unit 410 includes information indicating that it is a test communication message. Here, the information indicating that it is a test communication message is, for example, stored in advance by including information indicating that the test message is included in predetermined header information of the communication message. It may be determined by determining whether or not it matches information indicating that it is. Alternatively, the test communication request determination unit 420 stores in advance the identification information (for example, IP address) of the communication analysis device 100 that transmits the test communication message in its own storage area, and includes it in the received communication message. If the transmission source identification information matches the identification information of the communication analysis apparatus 100 that transmits a test communication message stored in advance, the communication message may be determined to be a test communication message. .
In this embodiment, an example in which the terminal adapter 400 includes functional units of a communication request receiving unit 410 and a test communication request determining unit 420 will be described. However, a router (VoIP router) that relays communication of the telephone terminal 500 ) May include these functional units.

  The telephone terminal 500 is a terminal that is connected to the IP telephone network via the terminal adapter 400 and the SIP server device 300 and performs telephone communication with a communication terminal connected to the IP telephone network, and includes an output unit 510. When the test communication request determining unit 420 of the terminal adapter 400 determines that the communication request communication message is not for testing, the output unit 510 receives the communication request and outputs a ringing tone. On the other hand, when the test communication request determination unit 420 of the terminal adapter 400 determines that the received communication request communication message is for testing, the output unit 510 does not output a ringing tone.

  The communication analysis device 100 is a computer device that receives a determination request transmitted from the communication terminal 200-1 and performs a determination process for determining the communication state of the communication terminal to be determined. The communication analysis device 100 includes a determination request accepting unit 110, a determination unit 120, a determination condition storage unit 130, a communication message receiving unit 140, and a communication request unit 150.

Determination request accepting unit 110 receives a determination request transmitted from communication terminal 200-1.
The communication request unit 150 transmits a test communication request communication message (INVITE) to the SIP server device 300 corresponding to the telephone terminal 500 indicated by the identification information included in the determination request received by the determination request receiving unit 110. To do. In addition, the test communication request is transmitted to the terminal adapter 400 according to the response code included in the response from the SIP server apparatus 300 to the transmitted test communication request. Here, as described above, the communication message of the test communication request generated by the communication request unit 150 transmits a communication message including information having its own identification information as a transmission source in the same manner as a normal communication request. The terminal adapter 400 may determine whether or not the terminal adapter 400 is for testing based on the transmission source information, or generate a communication message including information for testing in the header information of the communication message. May be.
The communication message receiving unit 140 receives a response communication message including a response code corresponding to the communication message of the test communication request transmitted by the communication request unit 150.

  In the determination condition storage unit 130, communication state information indicating the communication state of the determination target communication terminal indicated by the determination condition is associated with the determination condition indicated by the predetermined response code and the code transmission source. Stored in advance. FIG. 2 is a diagram illustrating an example of data stored in the determination condition storage unit 130. The line (a) in FIG. 2 is associated with the response code (486) indicating the line blockage and the determination condition information indicated by the fact that the code transmission source is the SIP server device, and the “busy” communication. State information is shown. FIG. 3A is a conceptual diagram showing the communication state of FIG. When the communication terminal 200-1 and the telephone terminal 500 are in a call, when the SIP server apparatus 300 receives a communication request addressed to the telephone terminal 500, the SIP server apparatus 300 stores and manages it in its own storage area. Based on the communication state, the telephone terminal 500 determines that the call is in progress, and transmits a response message including a response code (486) indicating a line blockage to the communication request source.

  The row (b) in FIG. 2 corresponds to the response code (5XX (XX is a number defined in RFC3261)) indicating the server failure and the determination condition information indicated by the code transmission source being the SIP server device. In addition, communication state information of “call is not possible due to SIP server failure, congestion, etc.” is shown. FIG. 3B is a conceptual diagram showing the communication state of FIG. When the SIP server device 300 is out of order or when the network is congested, the SIP server device 300 receives a communication request addressed to the telephone terminal 500 and sends a response message including a response code indicating the server failure. To the communication request source.

  The line (c) in FIG. 2 is associated with the response code (486) indicating the line blockage and the determination condition information indicated by the fact that the transmission source of the code is TA. Communication state information is shown. FIG. 3C is a conceptual diagram showing the communication state of FIG. If the telephone terminal 500 is not talking to another communication terminal, the SIP server device 300 manages the state that the telephone terminal 500 is in an idle state. Therefore, even if the telephone terminal 500 is disconnected and cannot make a call, When a communication request destined for the telephone terminal 500 is received, the communication request is transferred to the terminal adapter 400. The terminal adapter 400 makes a communication request to the telephone terminal 500, but determines that it cannot make a call with the telephone terminal 500 because the handset of the telephone terminal 500 is disconnected, and a response code (blocking line) 486) is transmitted to the communication request source.

  The line (d) in FIG. 2 is associated with the response code (406) indicating the timeout and the determination condition information indicated by the fact that the code transmission source is the SIP server device, and “TA has been removed. Or, communication state information “line failure” is shown. FIG. 3D is a conceptual diagram showing the communication state of FIG. When the telephone terminal 500 is not talking to another communication terminal, the SIP server apparatus 300 transfers the communication request to the terminal adapter 400 when receiving a communication request addressed to the telephone terminal 500. Here, when the terminal adapter 400 is disconnected from the line or there is a failure in the line between the SIP server device 300 and the terminal adapter 400, the SIP server device 300 and the terminal adapter 400 cannot communicate with each other. The SIP server device 300 cannot obtain a response from the terminal adapter 400. If the response from the terminal adapter 400 is not obtained within a predetermined time, the SIP server device 300 determines that a timeout has occurred and transmits a response code (406) indicating the timeout to the communication request source.

  Returning to FIG. 1, the determination unit 120 compares the response communication message received by the communication message reception unit 140 with the determination condition information stored in the determination condition storage unit 130, and the response included in the response communication message. The judgment condition that matches the code and the transmission source is detected. The determination unit 120 determines communication state information corresponding to the detected determination condition information as communication state information of a determination target communication terminal.

Next, an operation example in which the communication analysis apparatus 100 according to the present embodiment determines the communication state of the telephone terminal 500 will be described with reference to FIG.
Here, it is assumed that the communication terminal 200-1 makes a communication request to the telephone terminal 500 via the SIP server device 300, and receives a BT response from the SIP server device 300.

  The communication terminal 200-1 transmits a determination request for determining the telephone number of the telephone terminal 500 to the communication analysis apparatus 100 according to information input from the user. When the determination request accepting unit 110 of the communication analysis device 100 receives the determination request transmitted from the communication terminal 200-1, the communication request unit 150 corresponds to the communication message (INVITE) of the test communication request to the telephone terminal 500. The SIP server device 300 to be transmitted is transmitted as a destination (step S1).

  When the SIP server device 300 receives the communication message for the test communication request transmitted from the communication analysis device 100 (step S2), the SIP server device 300 reads information indicating the call state of the telephone terminal 500 managed by itself. Then, the communication state of the telephone terminal 500 is determined (step S3). When the SIP server device 300 determines that the telephone terminal 500 is in a call, it transmits a communication message (486) in response indicating that it is in a call to the communication analysis device 100 (step S3-YES). On the other hand, if the SIP server device 300 determines that the telephone terminal 500 is not in a call, it transfers a communication request communication message to the terminal adapter 400 (step S3-NO).

  When the communication request receiving unit 410 of the terminal adapter 400 receives the communication request communication message transferred from the SIP server device 300, the test communication request determining unit 420 receives the communication request communication message received by the communication request receiving unit 410. It is determined whether or not is for testing (step S4). If the test communication request determination unit 420 determines that the received communication message is for testing (step S4-YES), the output unit 510 of the telephone terminal 500 does not output a ring tone (step S6). . On the other hand, when the test communication request determination unit 420 determines that the communication message received in step S4 is not for test (step S4-NO), the terminal adapter 400 notifies the telephone terminal 500 of an incoming call. The output unit 510 of the telephone terminal 500 does not output a ring tone if the telephone terminal 500 is in a state where a telephone call is not possible due to disconnection of the handset (step S5-NO) (step S6). In this case, the terminal adapter 400 transmits a response communication message (486) indicating a line blockage to the communication analysis device 100. On the other hand, if the telephone terminal 500 is ready for a call in step S5, an incoming call notification is received, and the output unit 510 of the telephone terminal 500 outputs a ringing tone (step S7). In this case, the communication request receiving unit 410 transmits a communication message (180) of a response indicating that the call is in progress to the communication analysis apparatus 100.

  The communication message receiving unit 140 of the communication analysis device 100 receives a response communication message corresponding to the communication message of the test communication request transmitted by the communication request unit 150 in step S1 from the SIP server device 300 or the terminal adapter 400 ( Step S8). The determination unit 120 detects a determination condition matching the response communication message received by the communication message reception unit 140 from the determination condition stored in the determination condition storage unit 130. For example, the determination unit 120 first determines whether or not the response code included in the response communication message is a server failure (5XX) (step S9). If the response code included in the response communication message is a server failure (5XX), the determination unit 120 determines that the communication state of the telephone terminal 500 is a server failure (step S10).

  On the other hand, if it is determined in step S9 that the response code included in the response communication message is not a server failure (5XX), the determination unit 120 determines whether or not the response code included in the response communication message is a timeout (406). Is determined (step S11). If the response code included in the response communication message is a timeout (406), the determination unit 120 determines that the communication state of the telephone terminal 500 is out of TA or a line (network) failure (step S12).

  On the other hand, if it is determined in step S11 that the response code included in the response communication message is not time-out (406), the determination unit 120 determines whether or not the response code in the communication log is a line blockage (486), and It is determined whether the code transmission source is a SIP server device or a telephone terminal (step S13). If the code sender of the line blockage is the SIP server device, the determination unit 120 determines that the communication state of the telephone terminal 500 is in a call (step S14). On the other hand, if the transmission source of the line blocking code is a terminal adapter, the determination unit 120 determines that the communication state of the telephone terminal 500 is disconnected from the receiver (step S15).

As described above, according to the present embodiment, in SIP communication, when a BT is received as a response to a communication request, a determination request is sent to the communication analysis apparatus 100, so that the communication state of the communication terminal that is the communication request destination It becomes possible to determine more precisely and in detail.
If it is determined in step S9 in FIG. 4 that the server has failed, a voice guidance such as “the server has failed” may be output and sent to the determination request source. Also, if it is determined in step S11 in FIG. 4 that TA has been disconnected or a line failure has occurred, a voice guidance such as “the terminal adapter has been disconnected or the line has failed” is output to the determination request source. You may make it flow. If it is determined in step S13 in FIG. 4 that the handset has been disconnected, the determination request source indicates that “(identification information of determination request target) indicates that there is no available line on the terminal or that the handset has been disconnected. You may be made to output and play voice guidance such as “I will let you know that happened”. If it is determined in step S13 of FIG. 4 that the call is in progress, the determination request source is notified by voice notification such as “(identification information subject to determination request) indicates that the call was in progress”. May be output and flowed.

  Further, although this embodiment has shown an example of operation in a communication network in the case of 1 channel and 1 telephone number, a communication request is also made in the case of a contract state such as multiple channels and multiple telephone numbers as in this embodiment. It is possible to determine the communication state of the communication destination when BT is responded to. (A) of FIG. 5 is a figure which shows the terminal state of 1 channel and 1 telephone number. Here, one telephone terminal having one telephone number is connected to one terminal adapter. FIG. 5B is a diagram showing a terminal state of a plurality of channels and one telephone number. Here, a plurality of telephone terminals having the same telephone number are connected to one terminal adapter. (C) of FIG. 5 is a figure which shows the terminal state of multiple channels and multiple telephone numbers. Here, a plurality of telephone terminals having different telephone numbers are connected to one terminal adapter.

FIG. 6 is a diagram illustrating determination conditions indicated by a response code, a transmission source of the code, a contract state of a channel / phone number, and communication state information corresponding to the determination conditions.
The row (a) of FIG. 6 shows the communication status information for each contract status when the response code (486) indicating the line block and the code transmission source is the SIP server device. In this case, if the number is 1 channel and 1 number, the communication status is “busy”. If the number is 1 channel number, the communication status is “busy for all channels”. This indicates a communication state in which all the channels linked to the number are busy.

  The row (b) in FIG. 6 shows a response code (5XX (XX is a number defined in RFC3261)) indicating a server failure and a communication status for each contract status when the source of the code is a SIP server device. Information is shown. In this case, it is possible to determine that the communication state is “call cannot be made due to failure of SIP server device, congestion, etc.” in any contract state of 1 channel 1 number, multiple channel 1 number, and multiple channel multiple number.

  The row (c) of FIG. 6 shows communication status information for each contract status when the response code (486) indicating the line blockage and the code transmission source is TA. In this case, if the number is 1 channel and 1 number, the communication status of “Telephone handset disconnection” is set. If the number is a multichannel 1 number or multiple channels, the communication status is “Phoneset disconnection or TA port shortage”. Is shown.

The line (d) in FIG. 6 shows a response code (406) indicating a timeout and communication state information for each contract state when the code transmission source is the SIP server device. In this case, the communication status information “TA is out of order or line failure” is shown in any of the contract states of 1 channel 1 number, multiple channel 1 number, and multiple channel multiple number.
In this way, the determination condition storage unit 130 of the communication analysis device 100 stores the correspondence between the determination condition shown in FIG. 6 and the communication state information in advance, and gives the contract state to the determination request. The communication state may be determined in accordance with the contract conditions of 1 channel 1 number, multiple channel 1 number, and multiple channel multiple number.

  Further, the communication analysis apparatus 100 is provided with a function of checking whether or not the communication terminal 200-2 has a function corresponding to the communication message for the test communication request. If it is compatible, the communication message of the test communication request is transmitted to the communication terminal 200-2. If not compatible, the communication terminal 200-2 communicates with the SIP server apparatus 300 by the communication terminal 200-2. You may make it inquire about a state check. In this way, when the communication terminal 200-2 does not support the communication message for the test communication request, the communication state is confirmed using the communication state confirmation function of the general SIP server device 300. It is possible to prevent the communication terminal 200-2 from ringing for confirmation of the communication state.

  In the present embodiment, the communication terminal 200-1 is a telephone terminal that makes a communication request to the telephone terminal 500 and receives a response from the BT. However, the communication terminal 200-1 is operated by an operator, A computer terminal provided with a display unit or the like may be used. In this case, the communication state information in response to the determination request may be output by displaying the communication state information stored in the determination condition storage unit 130 as a character string on the display unit of the communication terminal 200-1. Further, in this case, the telephone terminal that has made a communication request to the telephone terminal 500 and received a response of BT can know the communication state of the communication request destination by making an inquiry to the operator.

  The program for realizing the function of the processing unit in the present invention is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system and executed to determine the communication state. May be performed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer system” includes a WWW system having a homepage providing environment (or display environment). The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

It is a figure which shows the structure of the communication system by one Embodiment of this invention. It is a figure which shows the example of data memorize | stored in the determination condition memory | storage part by one Embodiment of this invention. It is a figure which shows the concept of the communication state of the terminal by one Embodiment of this invention. It is a figure which shows the operation example of the communication system by one Embodiment of this invention. It is a figure which shows the terminal structure for every contract state by one Embodiment of this invention. It is a figure which shows the example of data memorize | stored in the determination condition memory | storage part by one Embodiment of this invention. It is a figure which shows the example of the terminal structure which performs communication based on SIP.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Communication analyzer 110 Judgment request acceptance part 120 Judgment part 130 Judgment condition memory | storage part 140 Communication message receiving part 150 Communication request part 200 Communication terminal 300 SIP server apparatus 400 Terminal adapter 410 Communication request receiving part 420 Test communication request judgment part 500 Telephone Terminal 510 Output unit 601 IP telephone network 602 SIP server device 603 Terminal adapter 604 Telephone terminal

Claims (8)

A communication system comprising: a communication terminal that performs communication based on SIP; and a communication analysis device that is connected to a SIP server device that relays a communication message that is transmitted and received by the communication terminal and includes information that identifies a transmission source. ,
The communication analyzer is
A communication request unit for transmitting a communication message of a communication request addressed to the communication terminal;
A communication message receiving unit that receives a communication message of a response corresponding to the communication message transmitted by the communication request unit;
Among the communication messages received by the communication message receiver, a determination condition indicated by a communication message that specifies a communication state of the communication terminal, and communication state information indicating a communication state of the communication terminal specified by the determination condition; Is stored in advance in association with a determination condition storage unit,
The communication message received by the communication message receiving unit is compared with the determination condition stored in advance in the determination condition storage unit, and when the determination condition that matches the communication message is detected, the detected message is detected. A determination unit that outputs communication state information of the communication terminal that is associated with the determination condition and stored in advance in the determination condition storage unit;
A communication system comprising: Of the communication analysis device,
The communication request unit transmits a communication request communication message including information indicating a test communication message,
The communication terminal is
A communication request receiving unit for receiving a communication message of the communication request transmitted from the communication analysis device;
A test communication request determination unit that determines whether or not the communication message received by the communication request unit includes information indicating that the communication request unit is used;
When the test communication request determination unit determines that the communication message does not include information indicating that the communication message is for test, the test communication request determination unit outputs a ring tone, while the test communication request determination unit determines that the communication message is The communication system according to claim 1, further comprising: an output unit that does not output a ringing tone when it is determined that information indicating that it is for testing is included. The determination condition storage unit of the communication analysis device includes a determination condition indicated by a communication message indicating a blockage with the communication terminal as a transmission source, and communication state information indicating that the receiver included in the communication terminal is disconnected. The communication system according to any one of claims 1 and 2, wherein and are stored in association with each other. The determination condition storage unit of the communication analysis device is in a state where the determination condition indicated by a communication message indicating a timeout with the SIP server device as a transmission source is not connected to the SIP server device and the communication terminal. Or communication state information indicating the state of either or both of the state where the line between the SIP server device and the communication terminal is out of order or the state is stored in association with each other. The communication system according to any one of claims 1 to 3, wherein the communication system is characterized. In the determination condition storage unit of the communication analysis device, a determination condition indicated by a communication message indicating a line block with the SIP server device as a transmission source, communication state information indicating that the communication terminal is busy, and Are stored in association with each other. The communication system according to any one of claims 1 to 4, wherein: The determination condition storage unit of the communication analysis device has a determination condition indicated by a communication message indicating a server failure with the SIP server device as a transmission source, and the SIP server device is in a failed state, or The communication state information indicating either one of the states in which communication with the communication terminal cannot be performed due to congestion or both states is stored in association with each other. The communication system according to any one of the above. A communication analysis device connected to a SIP server device that relays a communication message that is transmitted and received by a communication terminal that performs communication based on SIP and includes information for identifying a transmission source,
A communication request unit for transmitting a communication message of a communication request addressed to the communication terminal;
A communication message receiving unit that receives a communication message of a response corresponding to the communication message transmitted by the communication request unit;
Among the communication messages received by the communication message receiver, a determination condition indicated by a communication message that specifies a communication state of the communication terminal, and communication state information indicating a communication state of the communication terminal specified by the determination condition; Is stored in advance in association with a determination condition storage unit,
The communication message received by the communication message receiving unit is compared with the determination condition stored in advance in the determination condition storage unit, and when the determination condition that matches the communication message is detected, the detected message is detected. A determination unit that outputs communication state information of the communication terminal that is associated with the determination condition and stored in advance in the determination condition storage unit;
A communication analysis apparatus comprising: Of the communication messages received and received by the SIP server device, the communication of the communication terminal is connected to a SIP server device that relays a communication message that is transmitted and received by a communication terminal that performs communication based on SIP and includes information for identifying a transmission source. Communication provided with a determination condition storage unit in which a determination condition indicated by a communication message specifying a state and communication state information indicating a communication state of the communication terminal specified by the determination condition are stored in advance in association with each other A communication analysis method using an analysis device,
A communication request unit transmitting a communication message of a communication request addressed to the communication terminal;
A communication message receiving unit receiving a response communication message corresponding to the communication message transmitted by the communication request unit;
When the determination unit detects the determination condition that matches the communication message by comparing the communication message received by the communication message reception unit with the determination condition stored in advance in the determination condition storage unit Outputting the communication state information of the communication terminal stored in advance in the determination condition storage unit in association with the detected determination condition;
A communication analysis method comprising:

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