JP6145409B2 - Communication test system, communication test method, apparatus and program - Google Patents

Description

The present invention relates to a communication test system, a communication test method, an apparatus, and a program for performing an operation test of a SIP (Session Initiation Protocol) application between a terminal under test and a jig terminal.

  In an application for communication such as an IP (Internet Protocol) telephone, prior to communication, it may be necessary to establish communication paths on a network path including negotiation of various parameters in communication with the other party and firewall control. For this purpose, SIP (Session Initiation Protocol) is widely used.

  SDP (Session Description Protocol) is used to negotiate a receiving IP address and port number in addition to protocols, codecs, parameters, and the like used for media communication between SIP applications. For details on SIP, see RFC3261 (Request For Comment 3261; http://www.ietf.org/rfc/rfc3261.txt). For details on SDP, see RFC4566 (Request For Comment 4566; http: //www.ietf. org / rfc / rfc4566.txt).

  Media communication executed by the SIP application is not limited to voice and video, and various types of data communication can be performed. In SIP applications, you can usually specify a partner with a simple operation using a phone number. For this reason, SIP applications incorporating various media communication functions are being developed.

  In developing SIP applications, it is often necessary to check the interoperability with existing and new applications. In particular, if the content of media communication is data communication, a confirmation test is conducted to confirm whether it will operate normally even if part of the data format is changed. There is a need to do it efficiently.

  Therefore, the following techniques have been proposed. That is, first, a communication message is generated based on a test scenario prepared in advance, the communication message is transmitted to and received from the terminal under test, and a communication log is acquired. Next, it is determined whether or not the specification of the communication message recorded in the communication log matches a rule prepared in advance. Further, the communication logs obtained from a plurality of terminals under test are compared, and the difference and the determination result are displayed together (for example, see Patent Document 1).

  As another related technique, a technique called a transparent proxy has been proposed. A transparent proxy is installed on a network path where devices communicate with each other, and relays after processing messages contained in IP packets etc. without being aware of the existence of each communication device. . As a specific example, an HTTP proxy such as squid that can operate as a transparent proxy is known (see, for example, Non-Patent Document 1). The transparent proxy operates on an IP packet in which a specific destination address set in advance is set. For example, in the case of a transparent HTTP proxy, it is normally set to operate on an IP packet whose destination port number is “80”.

Japanese Patent No. 4763751

"Transparent proxy with squid", Internet <URL: http: //archive.linux.or.jp/JF/JFdocs/TransparentProxy.html>

  However, when using the inspection apparatus described in Patent Document 1, the inspection apparatus communicates with the terminal under test in the form of simulating a test jig terminal. Therefore, while preparing a communication message to be transmitted by the test jig terminal, a test for transmitting the prepared communication message to the terminal under test according to the communication message received from the terminal under test The scenario needs to be prepared. Also, if there are multiple test jig terminals and there are individual differences in communication messages sent to the terminal under test, test scenarios for simulating each test jig terminal can be It must be prepared according to the test fixture terminal.

  Further, the conventional transparent proxy described in Non-Patent Document 1 has the following problems. That is, in the case of a SIP application, there is no guarantee that the IP address and port number used for media communication are the same in every communication. For this reason, it is difficult to reliably operate the proxy function.

  In addition, the conventional transparent proxy operates the proxy function for packets addressed to a preset port number, so it is not a media communication performed by a SIP application, or a media communication started independently without using SIP. Even if there is, the proxy function will work. Further, the proxy function operates not for the SIP application but also for communication performed by the media communication module alone on the terminal under test or another terminal.

  In other words, when media communication is performed as a SIP application and when media communication is performed independently by the media communication module, the jig terminal uses the same port number. Even the proxy function will work. For example, if the content of media communication is access to an HTTP server, the proxy function will operate for TCP packets destined for port “80” regardless of whether the SIP application performs media communication or not. .

The present invention has been made paying attention to the above circumstances, and its purpose is to ensure that the proxy function operates even when the IP address and port number used for media communication are not the same in every communication, and SIP is used. Communication test system and communication test method in which the proxy function does not operate for media communication started independently, or communication performed by the media communication module alone on the terminal under test or other terminal, not as a SIP application It is to provide an apparatus and a program.

The first aspect of the present invention to achieve the above Symbol purpose is each SIP communication connected between the terminal to be tested and the jig terminal having a communication function using the (Session Initiation Protocol) Application The communication test system comprises a communication test apparatus and a media data processing apparatus connected so as to enable communication between the terminal under test, the jig terminal, and the communication test apparatus. It was taken.
That is, the communication test apparatus is provided with first storage means. The first storage means includes message specifying information for specifying a SIP message related to the test of the terminal under test, which is transferred between the terminal under test and the jig terminal, and the SIP message. Processing condition information including processing target information that specifies address information for media data communication as processing target and processing content information that specifies address information of the media data processing apparatus as processing content is stored. When the SIP message is received in the communication test apparatus, the message stored in the first storage means whether the received SIP message is a SIP message related to the test of the terminal under test. Determine based on specific information. As a result of this determination, when a SIP message related to the test is specified, the media data included in the specified SIP message based on the processing target information and the processing content information stored in the first storage means The address information for communication is changed to the address information of the media data processing device, and the changed SIP message is transmitted to the terminal under test or the jig terminal.
On the other hand, the media data processing apparatus is provided with second storage means. The second storage means stores media data processing condition information including at least processing target information for specifying a processing target site in the media data and processing content information for specifying the processing content of the processing target site. Then, the media data processing device, when receiving the media data of which destination is the media data processing device from the terminal to be tested or the jig terminal, the processing object information and processing stored in said second storage means Based on the content information, the processing target portion of the received media data is processed to generate test media data, and the generated test media data is sent to the jig terminal or the terminal under test. Send.

The second aspect of the present invention to achieve the above Symbol purpose are those took measures as described below.
That is, in a communication test apparatus that is communicably connected between a terminal under test and a jig terminal each having a communication function using a SIP (Session Initiation Protocol) application, the first storage means, Two storage means are provided. The first storage means includes message specifying information for specifying a SIP message related to the test of the terminal under test, which is transferred between the terminal under test and the jig terminal, and a medium included in the SIP message. a processing object information specifying the address information for data communication as a processing target, and stores the processing condition information including the processing content information specifying the address information of the upper Symbol communications test equipment as processing contents. The second storage means stores media data processing condition information including at least processing target information for specifying a processing target site in the media data and processing content information for specifying the processing content of the processing target site.
Then, when a SIP message is received, whether or not the received SIP message is a SIP message related to the test of the terminal under test is based on the message specifying information stored in the first storage means. Media data communication included in the identified SIP message based on the processing target information and the processing content information stored in the first storage means when the SIP message related to the test is specified the address information of use, to change the address information of the communication test device and transmits the modified SIP message to the terminal to be tested or the jig device.
Further, when receiving the media data to the communication test device and the destination from the terminal to be tested or jig terminal, based on the processing object information and the processed content information stored in said second storage means, By processing the processing target portion of the received media data, test media data is generated, and the generated test media data is transmitted to the jig terminal or the terminal under test.

In the above-described second aspect of the invention, each time a SIP message relating to the above test terminal to be tested is received, the IP address of the communication test device, a random port number to receive media data Based on the processing target information stored in the first storage means, the address information for media data communication included in the received SIP message is generated and set at random. It is also possible to change the address and port number.

According to the first and second aspects of the present invention, even when the IP address and the port number used for media communication are different in each communication, or even when the media communication starts communication independently without using SIP. The proxy function can be surely exhibited. Furthermore, in the case where the jig terminal 2 uses the same port number when performing media communication as a SIP application and when performing media communication performed independently by the media communication module, media communication that is not subject to testing is performed. On the other hand, the proxy function can be disabled.

  In addition, by dynamically and randomly setting the IP address on the test device and the port number on the media data processing unit, the IP address and port number information can be made different for each test. In addition, when there is communication log data for each test of the jig terminal, it becomes easy to distinguish the communication log data. In addition, when there are a plurality of terminals under test, different values can be set for the IP address and port number used by the media data processing unit for each terminal under test. It becomes possible to execute in parallel.

The functional block diagram which shows the structure of the communication test apparatus which concerns on 1st Embodiment of this invention with the structure of a jig | tool terminal and a to-be-tested terminal. The figure which shows the 1st example of the communication sequence between the to-be-tested terminal shown in FIG. 1, and a jig | tool terminal. The figure which shows the 2nd example of the communication sequence between the to-be-tested terminal shown in FIG. 1, and a jig | tool terminal. The flowchart which shows the process sequence and process content of the test apparatus shown in FIG. The figure which shows an example of the SIP message process condition table with which the test apparatus shown in FIG. 1 is provided. The figure which shows the 1st example of the SIP message before a process by the testing apparatus shown in FIG. The figure which shows the 1st example of the SIP message after a process by the test apparatus shown in FIG. The figure which shows the 2nd example of the SIP message before a process by the testing apparatus shown in FIG. The figure which shows the 2nd example of the SIP message after a process by the test apparatus shown in FIG. The functional block diagram which shows the structure of the communication test apparatus and media data processing apparatus which concern on 2nd Embodiment of this invention with the structure of a jig | tool terminal and a to-be-tested terminal. The figure which shows the example of the communication sequence between the to-be-tested terminal shown in FIG. 10, and a jig | tool terminal. The figure which shows an example of the SIP message process condition table with which the test apparatus shown in FIG. 10 is provided. The figure which shows the 1st example of the SIP message before a process by the testing apparatus shown in FIG. The figure which shows the 1st example of the SIP message after a process by the test apparatus shown in FIG. The figure which shows the 2nd example of the SIP message before a process by the test apparatus shown in FIG. The figure which shows the 2nd example of the SIP message after a process by the test apparatus shown in FIG. The flowchart which shows the process sequence and process content of the media data processing apparatus shown in FIG. The figure which shows the 1st example of the media data processing condition table with which the media data processing apparatus shown in FIG. 10 is provided. The figure which shows the 1st example of the media data before a process by the media data processing apparatus shown in FIG. The figure which shows the 1st example of the media data after the process by the media data processing apparatus shown in FIG. The figure which shows the 2nd example of the media data processing condition table with which the media data processing apparatus shown in FIG. 10 is provided. The figure which shows the 2nd example of the media data before a process by the media data processing apparatus shown in FIG. The figure which shows the 2nd example of the media data after the process by the media data processing apparatus shown in FIG. The figure which shows the 3rd example of the media data processing condition table with which the media data processing apparatus shown in FIG. The figure which shows the 3rd example of the media data before a process by the media data processing apparatus shown in FIG. The figure which shows the 3rd example of the media data after the process by the media data processing apparatus shown in FIG. The functional block diagram which shows the structure of the communication test apparatus which concerns on 3rd Embodiment of this invention with the structure of a jig | tool terminal and a to-be-tested terminal. The figure which shows the example of the communication sequence between the to-be-tested terminal shown in FIG. 27, and a jig | tool terminal. The flowchart which shows the process sequence and process content of the test apparatus shown in FIG. The figure which shows an example of the SIP message process condition table with which the test apparatus shown in FIG. 27 is provided. The figure which shows the 1st example of the SIP message before a process by the testing apparatus shown in FIG. The figure which shows the 1st example of the SIP message after a process by the testing apparatus shown in FIG. The figure which shows the 2nd example of the SIP message before a process by the testing apparatus shown in FIG. The figure which shows the 2nd example of the SIP message after a process by the testing apparatus shown in FIG. FIG. 28 is a diagram showing an example of an IP address table for media data processing provided in the test apparatus shown in FIG. 27. The figure which shows an example of the media data processing management table with which the test apparatus shown in FIG. 27 is provided. The figure which shows an example of the connection management table with which the test apparatus shown in FIG. 27 is provided.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
In the first embodiment of the present invention, in order to perform a test for confirming the behavior of the terminal under test when the additional number is acquired between the terminal under test and the jig terminal, the terminal under test and the jig A test apparatus capable of communicating with a terminal is provided. And by providing a memory table storing the processing conditions of the SIP message in this test apparatus, only a specific SIP message is selected as a processing target among the SIP messages transmitted from the terminal under test and the jig terminal, and A SIP message for the above test is generated by performing processing necessary for the test on the selected SIP message, and the generated test message is relayed between the terminal under test and the jig terminal. It is what I did.

(Constitution)
FIG. 1 is a block diagram showing the functional configuration of a test apparatus according to the first embodiment of the present invention, together with the functional configurations of a terminal under test and a jig terminal.
In the figure, a terminal under test 3 is connected to a jig terminal 2 via a test apparatus 1 and a hub (HUB) 4. It is assumed that the terminal under test 3 and the jig terminal 2 use the UDP protocol “5060” port for transmission and reception of SIP messages. In addition, although the terminal 3 to be tested and the jig terminal 2 have IP addresses, the test apparatus 1 has an interface X13 and an interface Y14 that are bridge-connected via an IP packet transfer processing unit 12 described later and does not have an IP address. To do.

  The terminal under test 3 may be connected to the test apparatus 1 via the hub 4, and the jig terminal 3 may be connected to the test apparatus 1 directly or via a network without the hub 4. May be.

  The jig terminal 2 includes a SIP application processing unit 21 having a SIP communication unit 211 and a media communication unit 212, and an interface B22. Similarly to the jig terminal 2, the terminal under test 3 also includes a SIP application processing unit 31 having a SIP communication unit 311 and a media communication unit 312 and an interface A32. The SIP communication units 211 and 311 generate and transmit / receive SIP messages according to the SIP protocol. The media communication units 212 and 312 generate and transmit / receive media data according to the SIP protocol.

  The test apparatus 1 includes a SIP message processing unit 11, an IP packet transfer processing unit 12, an interface X13, and an interface Y14. Among these, the SIP message processing unit 11 includes a SIP message processing condition table 111 and a SIP message processing control unit 112.

  The IP packet transfer processing unit 12 receives the IP packet sent from the terminal under test 3 or the jig terminal 2 via the interface X13 or the interface Y14, and determines whether the received IP packet is a SIP packet. To do. If it is a SIP packet, the SIP packet is transferred to the SIP message processing control unit 112. If it is not a SIP packet, it is transferred as it is.

  In the SIP message processing condition table 111, a “message matching condition” for specifying a condition for specifying a SIP message to be processed, a “processing target” for specifying a processing target portion in the SIP message, and a processing method “ “Processing content” is stored. FIG. 5 shows an example. In the example illustrated in FIG. 5, a case where one set of “processing target” and “processing content” is associated with one “message matching condition” is described. A plurality of sets of “processing object” and “processing content” may be associated with one.

  The SIP message processing control unit 112 processes the SIP message transmitted from the terminal under test 3 and the jig terminal 2 with reference to the SIP message processing condition table 111. The SIP message to be processed includes a REGISTER request and a 200 response to the REGISTER request. Note that other SIP messages can be applied to the SIP message to be processed. Further, the type of the processing process includes a process of replacing “processing target” with “processing content”, but a process of deleting “processing target” and a process of replacing the entire message with a specific message can also be executed.

  The SIP message processing conditions shown in FIG. 5 will be described in detail below. That is, as the “message matching condition”, the type of the SIP message and the condition of the IP address described in the IP header in which the SIP message is stored are set. When other terminals that perform SIP communication are connected to the network of the first embodiment in addition to the test apparatus 1, the terminal 3 to be tested, and the jig terminal 2, the "message match condition" includes a From header. By adding a condition including a header including the IP address of the terminal under test such as a To header, a Contact header, and a Via header, it is possible to prevent SIP communication performed by other terminals from being affected. In addition, when processing a SIP message by associating a request with a response, information specifying a SIP call such as a Call-ID header or a Via header or a value specifying a SIP transaction when processing the request From the request. Then, a condition in which those values are the same may be added to the “message match condition” of the record of the SIP message processing condition table 111 corresponding to the response.

  In the example of FIG. 5, a record “1” with a content of adding a character string corresponding to an additional number to the P-Associated-URI header included in the 200 response to the REGISTER request, and REGISTER For the Contact header included in the request, a record “2” is described in which processing for adding a Supported header is performed immediately after the header. Note that only one of the records can be included depending on whether the REGISTER request or the response to the REGISTER request is processed.

  In the “message match condition” of record “1” stored in the SIP message processing condition table 111, the SIP message is a 200 response to REGISTER, and the destination IP address of the SIP message is the IP address of the terminal under test. “192.168.1.2” is specified as a condition. Note that requests other than REGISTER requests such as INVITE requests also exist in SIP requests, but can be determined by the request type described in the first line of the SIP message. In the case of a SIP response, the target SIP request type can be determined from the request type described in the CSeq header.

  In “Processing target” of record “1”, specify the P-Associated-URI header, and specify the contents to add <sip: 0311111111@10.0.0.1>, which is additional number information, to the header in “Processing content” doing. In this example, “target to be processed” is specified by a fixed character string, but if a regular expression is used, a SIP header including a random character string can be specified as “target to be processed”.

  In the “message match condition” of the record “2” described in the SIP message processing condition table 111, the SIP message is a REGISTER request, and the source IP address of the SIP message is the IP address of the terminal 3 under test “ It is specified as a condition that it is “192.168.1.2”. In the “processing target” of the record “2”, the Contact header is specified, and the content for adding the Supported header immediately after the header is specified in the “processing content”.

(Operation)
Next, the operation of the test apparatus 1 configured as described above will be described. FIG. 4 is a flowchart showing the operation procedure and contents.
Here, the terminal under test 3 transmits a REGISTER request to the jig terminal 2, and the test apparatus 1 processes the response from the jig terminal 2 to cause the terminal under test 3 to acquire an additional number (see FIG. 2) When testing the response of the jig terminal 2 and the behavior of the terminal under test 3 that has received the response when the REGISTER request sent by the terminal under test 3 is changed (Sequence 2 in FIG. 3) will be described respectively.

  When an IP packet is transmitted from the terminal under test 3 or the jig terminal 2, the IP packet transfer processing unit 12 of the test apparatus 1 receives the IP packet through the interface X13 or the interface Y14 in step S11. For example, as shown in FIG. 2, if the terminal under test 3 transmits an IP packet of the REGISTER request to the jig terminal 2, the IP packet transfer processing unit 12 of the test apparatus 1 interfaces the IP packet of the REGISTER request. Receive through X13. As shown in FIG. 3, when the jig terminal 2 returns an IP packet of the response to the terminal under test 3, the IP packet of the response is received through the interface Y14. An example of a REGISTER request is shown in FIG. 8, and an example of a response to a REGISTER request is shown in FIG.

  Subsequently, the IP packet transfer processing unit 12 determines whether or not the received IP packet is a SIP packet in step S12. For example, if the received IP packet is a UDP packet and the destination port number is “5060”, the IP packet is determined to be a SIP packet. Similarly, when the terminal under test 3 uses a port number other than “5060”, the packet addressed to the port number is determined as a SIP packet. For example, a REGISTER request transmitted from the terminal under test 3 is determined as a SIP packet.

  If it is determined that the packet is a SIP packet, the IP packet transfer processing unit 12 passes the SIP packet to the SIP message processing control unit 112. In step S13, the SIP message processing control unit 112 refers to the SIP message processing condition table 111 and determines whether or not a record in the table 111 is empty. If it is determined that the record is empty, the process proceeds to step S17. If the record is not empty, the process proceeds to step S14.

  In step S14, the SIP message processing control unit 112 selects one record stored in the SIP message processing condition table 111, and the SIP message sent from the IP packet transfer processing unit 12 is the “message” of the selected record. It is determined whether or not the “match condition” is met. If the result of the determination is that there is a match, the process proceeds to step S15. If there is no match, the next record in the SIP message processing condition table 111 is selected to determine whether or not the “message match condition” is matched. To do. Similarly, records stored in the SIP message processing condition table 111 are sequentially selected to determine whether or not the “message matching condition” is matched.

  In step S <b> 15, the SIP message processing control unit 112 performs the processing indicated by “processing content” on the portion to be “processed” in the received SIP message. If no “processing target” is found, the processing is not performed. The search for “processing object” is performed by character string matching. In the example shown in FIG. 5, “processing object” is specified as a fixed character string. However, if a regular expression is used, a SIP header including a random character string can be specified as “processing object”.

  For example, according to the record “1” of the SIP message processing condition table 111 shown in FIG. 5, <sip described as P-Associated-URI as shown in FIG. 7 for the 200 response to the REGISTER request in FIG. 6. : 3@192.168.1.1> is processed to add <sip: 0311111111@10.0.1.1>. Also, according to record “2”, Supported: path is added to the next line of Contact: <sip: random123@192.168.1.2>; expires = 3600 as shown in FIG. 9 for the REGISTER request shown in FIG. Processing is performed.

  Finally, in step S16, the SIP message processing control unit 112 recalculates checksum values such as a UDP header and an IP header included in the SIP packet, and rewrites the values in the IP packet before processing.

  When the SIP packet message processing is completed, the IP packet transfer processing unit 12 passes the processed IP packet through the other interface different from the interface that received the unprocessed IP packet in step S17. Send. For example, when the IP packet of the REGISTER request transmitted from the terminal under test 3 is received via the interface X13, the processed IP packet is transmitted from the interface Y14 to the jig terminal 2. On the other hand, when the IP packet of the response to REGISTER transmitted from the jig terminal 2 is received via the interface Y14, the processed IP packet is transmitted from the interface X13 to the terminal under test 3.

(effect)
As described in detail above, in the first embodiment, the SIP message processing condition table 111 in the test apparatus 1 includes, for the SIP message to be processed, a “message match condition” that represents a condition for designating the SIP message. A “processing target” for specifying a processing target portion in the SIP message and a “processing content” for specifying a processing method are stored in advance. When the SIP message and its response are received from the terminal under test 3 and the jig terminal 2, respectively, the received SIP message based on the “message matching condition” stored in the SIP message processing condition table 111. Alternatively, it is determined whether or not the response is a processing target, and in the case of the processing target, the above-mentioned reception is made based on the designation information by the “processing target” and “processing content” stored in the SIP message processing condition table 111. The SIP message or its response is processed and transmitted to the jig terminal 2 or the terminal 3 to be tested.

  Therefore, in the test apparatus 1, it is possible to reliably process the SIP message to be processed only by setting information for rewriting only a necessary part of the SIP message in the SIP message processing condition table 111. Become. For this reason, when it is desired to examine the behavior of the terminal under test 3 when only a part of the SIP message received by the terminal under test 3 is changed, a series of SIP messages including other SIP messages not to be changed are included. It is no longer necessary to prepare a test scenario for sending and receiving messages in advance, which can greatly reduce the workload of the system administrator who performs the test. In addition, a necessary test can be performed without affecting communications performed by terminals other than the terminal 3 to be tested.

[Second Embodiment]
In the second embodiment of the present invention, the test device and the media data processing device are provided independently, and the behavior of the terminal under test when the media data transmitted between the terminal under test and the jig terminal is changed. When performing a test to confirm the media data is transferred to the media data processing device by processing the destination information of the specific SIP message used for the test with the test device, and the media data processing device After performing the necessary processing for the test, it is relayed to the destination terminal.

  More specifically, an IP representing a destination of specific media communication included in the SIP message transmitted from the terminal under test to the jig terminal and the SDP information in the SIP message transmitted from the jig terminal to the terminal under test. The address and port number are rewritten to the IP address and port number used by the media data processing unit, so that the media data transmitted from the terminal under test and the jig terminal are transferred to the media data processing device, and the media data processing The apparatus performs processing necessary for the test on the media data and relays the media data after the processing to a destination terminal.

(Constitution)
FIG. 10 is a block diagram showing the functional configurations of the test apparatus and media data processing apparatus according to the second embodiment of the present invention, together with the functional configurations of the terminal under test and the jig terminal. In the figure, the same parts as those in FIG.

  In the figure, the terminal 3 to be tested and the jig terminal 2 each have an IP address and can communicate with each other via a network. The test apparatus 1 and the media data processing apparatus 5 are connected to the terminal under test 3 and the jig terminal 2 via the hub 4. The media data processing device 5 is connected to a position capable of IP communication with both the terminal under test 3 and the jig terminal 2 and has an IP address that is communicable with both the terminal under test 3 and the jig terminal 2. ing.

  For example, the terminal under test 3 has an IP address “192.168.10.30”, and the jig terminal 2 has an IP address “192.168.10.40”. Further, the media data processing apparatus 5 has “192.168.10.77” as an IP address, so that the media data processing apparatus 5 can perform IP communication between the terminal under test 3 and the jig terminal 2 respectively. Further, in order to send and receive the SIP message, both the terminal under test 3 and the jig terminal 2 use the “5060” port of the UDP protocol. In addition, in order to send and receive media data, the terminal under test 3 uses the “53030” port of the TCP protocol, and the jig terminal 2 uses the “54040” port. On the other hand, the media data processing device 5 uses the “57740” port to relay the transmission of media data between the terminal under test 3 and the jig terminal 2 and the media data processing apparatus 5. And the media data is transmitted to the jig terminal 2 using the “57730” port.

  In addition, the terminal under test 3 and the jig terminal 2 are connected to the test apparatus 1 and the media data processing apparatus 5 via the hub 4. It may be configured to connect to a state where SIP communication is possible.

  Incidentally, the SIP message processing condition table 111 of the test apparatus 1 stores a plurality of records. Each record includes “message matching condition”, “processing object”, and “processing content”. FIG. 12 shows an example of this. As record “1”, information for processing the media description part in the SDP information included in the INVITE request sent by the terminal under test 3 is stored, and record “2” is stored. Information for processing the media description part in the SDP information included in the 200 response to the INVITE request sent by the jig terminal 2 is stored.

  In the media description part in the SDP information, as the setting value of the m = line, the media part is set to application, the proto part is set to TCP, and the fmt part is set to vnd.example.messaging. Depending on the contents of the test, if the media part is audio or video, the proto part or the fmt part may be different.

  In the “message match condition” included in the record “1” of the SIP message processing condition table 111, as shown in FIG. 12, the IP address of the terminal 3 under test is set as the condition of the source of the IP packet. In the “processing target”, the m = application line in the SDP information included in the INVITE request is set. In the present embodiment, the port portion of the m = line is set to “53030” in accordance with the port number used by the terminal under test 3 for media communication. Unlike the present embodiment, when the terminal under test 3 sets “9” in the port section as described in RFC4145, the port number actually used by the terminal under test 3 for media transmission / reception is in advance. If you don't know, you can use a regular expression that matches the port part with any number.

  In the “processing content” included in the record “1”, information for changing the port portion of the “processing target” m = line and adding the c = line immediately after the m = line is set. In the port portion of the m = row after the change, the port number “57730” on the media data input / output unit 53 of the media data processing device 5 for receiving the IP packet of the media data sent from the jig terminal 2 is stored. Is set. The IP address of the media data processing device 5 is set in the connection-address portion of the added c = line. Note that when the SDP information before processing indicates that the terminal under test 3 sends an INVITE message in which c = line is described after m = line, c = after m = line in the “processing target” of record “1”. A “=” line may be added, and the “processing content” may be set so that the connection-address portion of the c = line is changed to the IP address of the media data processing device 5.

  In the “message match condition” included in the record “2”, the IP address of the terminal under test 3 is set as the condition of the destination of the IP packet. In the “processing target”, the m = application line in the SDP information included in the 200 response to the INVITE request is set. For example, the port portion of the m = line is set to “54040” in accordance with the port number used by the jig terminal 2 for media communication. In the “processing content” included in the record “2”, information for changing the port portion of the “processing target” m = line and adding the c = line immediately after the m = line is set. The port portion of the m = line after the change is “57740” which is the port number on the media data input / output unit 53 of the media data processing device 5 in order to receive the IP packet of the media data sent by the terminal under test 3. Is set. The IP address “192.168.10.77” of the media data processing device 5 is set in the connection-address portion of the added c = line.

  In addition, when the SDP information before processing sends a response in which the jig terminal 2 describes c = line after m = line, as “processing object” of record “2”, c = after m = line The information added with the line is set, and the “processing content” may be set so that the connection-address portion of the c = line is changed to the IP address of the media data processing apparatus 5.

  The SIP message processing control unit 112 designates the SDP information included in the SIP message that matches the message matching condition by “processing target” by referring to each record stored in the SIP message processing condition table 111. The processed part is processed to the content specified in “Processing content”. Then, by this processing, the transmission destination of the media data sent from the terminal under test 3 and the jig terminal 2 is changed to the media data processing device 5.

  On the other hand, the media data processing device 5 includes a storage unit 51, a media data processing control unit 52, a media data input / output unit 53, a user interface unit 54, and an interface C55.

  The storage unit 51 is provided with a media data processing condition table 511, a connection management table 512, and one or more media data processing management tables 513. The media data processing condition table 511 stores a plurality of records. Each record includes “processing target”, “user data input target flag”, “processing method”, and “processing additional information”.

  First of all, the “user data input target flag” is a data for the user to process data when the media data processing device 5 finds a data portion specified by “processing target” in the received media data. This is information that determines whether or not to accept input. If it is true, it is accepted. If it is false, it is not accepted.

  Next, “processing method” designates a processing method of media data, and includes data replacement for replacing character strings and the like, output delay for delaying the output of media data, and the like. “Processing additional information” is information that depends on the “processing method”, and indicates replacement data when data replacement is performed, and delay time when output delay is performed. Examples of media data processing condition tables are shown in FIGS. 18 and 21 show examples in the case of performing data replacement processing, and FIG. 24 shows an example in the case of processing output delay.

  The media data processing management table 513 includes a connection for the media data processing apparatus 5 to receive media data sent from the terminal 3 under test, a media data processing condition table 511 to be referred to when processing, and processed media data. Is set to represent the connection for transmitting the message from the media data processing device 5 to the jig terminal 2. Similarly, a connection for the media data processing device 5 to receive the media data sent from the jig terminal 2, a media data processing condition table 511 to be referred to when processing, and the media data processing device 5 to the terminal 3 to be tested. Information representing a connection for transmitting processed media data is also set.

  Each connection is managed by a connection management table 512. For each connection, the local IP address and local port number on the media data processing device 5, the remote IP address and remote port number on the terminal under test or the jig terminal, etc. Information is retained. FIG. 26 shows an example of the connection management table 512.

  That is, the record “1” holds information on the TCP connection used for transmission / reception of media data between the terminal under test 3 and the media data processing device 5. The TCP connection of this record “1” is internally referred to by C1. In “Local IP address”, “192.168.10.77” which is the IP address of the media data processing apparatus 5 is set. “57740” is set in the “local port number”. In “Remote IP address”, “192.168.10.30” which is the IP address of the terminal 3 under test is set. “Remote port number” is set to “53030”, which is a port number used by the terminal under test 3 to transmit and receive media data.

  The record “2” holds information of a TCP connection used for transmission / reception of media data between the jig terminal 2 and the media data processing device 5. The TCP connection of record “2” is internally referred to by C2. In “Local IP address”, “192.168.10.77” which is the IP address of the media data processing apparatus 5 is set. “57730” is set in the “local port number”.

  As a result, the jig terminal 2 uses the IP address used by the terminal under test 3 to transmit and receive media data by processing the SIP message based on the record “1” defined in the SIP message processing condition table 511 shown in FIG. Recognize the TCP port number as port “57730” of “192.168.10.77”. In “Remote IP address”, “192.168.10.40” which is the IP address of the terminal 3 under test is set. In the “remote port number”, “54040” which is a port number used by the terminal under test 3 for transmission / reception of media data is set.

  Note that the terminal under test 3 and the jig terminal 2 may use separate TCP connections for transmission and reception of media data. However, in this embodiment, since one TCP connection is used for both transmission and reception, each between the terminal under test 3 and the media data processing device 5 and between the jig terminal 2 and the media data processing device 5, One TCP connection is used for transmission / reception of media data.

  In the present embodiment, it is assumed that the IP address and port number used by the terminal under test 3 for transmission / reception of media data are known. However, the terminal under test 3 includes “9” in the port section as described in RFC4145. When "" is set or when the numerical value to be set in the port portion is not known in advance, the "remote port number" and the "remote IP address" need not be set in advance. In that case, when a TCP session is established, the other party's IP address and port number are acquired and set in the corresponding field.

  Specifically, the following information is set in the media data processing management table 513. FIG. 25 shows an example. That is, the record “1” first includes information necessary for receiving and processing the IP packet of the media packet sent from the terminal under test 3 and transmitting it to the jig terminal 2. In the “reception TCP connection”, the TCP connection referred to by C1 on the connection management table 512 shown in FIG. 26 is set. Similarly, the “transmission TCP connection” in the connection management table 512 shown in FIG. The TCP connection referenced by C2 is set up. In the item “Media Data Processing Condition Table”, corresponding media data processing conditions are set according to the desired test contents.

  Next, the record “2” includes information necessary for receiving and processing the IP packet of the media packet sent out by the jig terminal 2 and transmitting it to the terminal 3 under test. In the “reception TCP connection”, the TCP connection referred to by C2 is set on the connection management table 512 shown in FIG. 26. Similarly, the “transmission TCP connection” in the connection management table 512 shown in FIG. The TCP connection referenced by C1 is set up. In the item “Media Data Processing Condition Table”, corresponding media data processing conditions are set according to the desired test contents.

  The media data processing control unit 52 receives an IP packet of media data sent from the terminal under test 3 and the jig terminal 2 through the interface C55 and the media data input / output unit 53, and on which connection the received IP packet is received. The corresponding record in the connection management table 512 is selected by determining whether it has been done. Then, with reference to the media data processing condition table 511, it is determined whether or not the media data received from the media data input / output unit 53 includes a portion to be processed. As a result of the determination, if the processing target part is included, the processing target media data is processed according to the processing additional information in the media data processing condition table 511.

(Operation)
Next, operations of the test apparatus 1 and the media data processing apparatus 5 configured as described above will be described.
Here, as shown in FIG. 11, when the terminal under test 3 transmits an INVITE request to the jig terminal 2, and when the jig terminal 2 returns a 200 response to the above INVITE request to the terminal under test 3. Further, the test apparatus 1 rewrites the destination IP address and port number of the specific media communication included in the SDP information in the INVITE request and the 200 response to the IP address and port number used by the media data processing apparatus 5. As a result, the media data transmitted from the terminal 3 to be tested and the jig terminal 2 are transferred to the media data processing device 5, and the media data processing device 5 performs the processing necessary for the test on the media data. A case will be described as an example.

  In FIG. 11, the provisional response message between the INVITE request and the 200 response to the INVITE request is omitted. Also, in this example, the case where an INVITE request and a 200 response to the INVITE request are targeted as SIP messages processed by the test apparatus 1 will be described as an example, but other SIP messages including SDP information such as an UPDATE request will be described. Even in this case, it is applicable.

(1) Operation of Test Apparatus 1 First, the following operation is executed in the test apparatus 1. The operation procedure of the test apparatus 1 in the second embodiment is the same as the operation procedure of the test apparatus 1 described in the first embodiment, and will be described with reference to FIG.

  When the INVITE request is transmitted from the terminal under test 3, the IP packet transfer processing unit 12 of the test apparatus 1 receives the INVITE request through the interface X13 in step S11. When the jig terminal 2 returns a 200 response to the terminal under test 3, the 200 response is received through the interface Y14.

  Subsequently, the IP packet transfer processing unit 12 determines whether or not the received INVITE request or 200 response is a SIP packet in step S12. If it is determined as a SIP packet, the SIP packet is transferred to the SIP message processing control unit 112. hand over. In step S13, the SIP message processing control unit 112 refers to the SIP message processing condition table 111 and determines whether or not a record in the table 111 is empty. If it is determined that the record is empty, the process proceeds to step S17. If the record is not empty, the process proceeds to step S14.

  In step S14, the SIP message processing control unit 112 selects one record stored in the SIP message processing condition table 111, and the SIP message sent from the IP packet transfer processing unit 12 is the “message” of the selected record. It is determined whether or not the “match condition” is met. For example, if the record is “1”, whether the received SIP message is an INVITE request and the source address of the IP packet is “192.168.10.30”, that is, whether the source is the terminal 3 under test. Determine whether or not. If the record is “2”, the received SIP message is a 200 response to the INVITE request and the destination address of the IP packet is “192.168.10.30”, that is, the destination is the terminal 3 under test. It is determined whether or not there is.

  If the result of the determination is that there is a match, the process proceeds to step S15. If there is no match, the next record in the SIP message processing condition table 111 is selected to determine whether or not the “message match condition” is matched. To do. Similarly, records stored in the SIP message processing condition table 111 are sequentially selected to determine whether or not the “message matching condition” is matched.

  When the received SIP message matches the message matching condition, in step S15, the SIP message processing control unit 112 performs processing indicated in “processing content” for the portion to be “processed” in the received SIP message. Process. If no “processing target” is found, the processing is not performed. The search for “processing object” is performed by character string matching. In the example shown in FIG. 12, “processing object” is specified as a fixed character string. However, using a regular expression, a SIP header including a random character string can be specified as “processing object”.

  For example, according to the record “1” of the SIP message processing condition table 111 shown in FIG. 12, the process of adding c = IN IP4 192.168.10.77 as shown in FIG. 14 to the SDP information of the INVITE request shown in FIG. Is done. Further, according to the record “2”, the process of adding c = IN IP4 192.168.10.77 as shown in FIG. 16 is performed on the SDP information of the 200 response to the INVITE request shown in FIG. That is, in any case, processing for adding the IP address of the media data processing device 5 is performed.

  Finally, in step S16, the SIP message processing control unit 112 recalculates checksum values such as a UDP header and an IP header included in the SIP packet, and rewrites the values in the IP packet before processing.

  When the SIP packet message processing is completed, the IP packet transfer processing unit 12 passes the processed IP packet through the other interface different from the interface that received the unprocessed IP packet in step S17. Send. For example, when an INVITE request is received from the terminal under test 3 via the interface X13, the processed INVITE request is transmitted from the interface Y14 to the jig terminal 2. On the other hand, when a 200 response to the INVITE request transmitted from the jig terminal 2 is received via the interface Y14, the 200 response after the processing is transmitted from the interface X13 to the terminal under test 3.

(2) Operation of Media Data Processing Device 5 Next, the media data processing device 5 performs the following operation. FIG. 17 is a flowchart showing the procedure and contents.
When an IP packet of media data is transmitted from the terminal under test 3, the IP address and port number (“57740” port) of the media data processing device 5 are set in the destination information of this IP packet. The IP packet is received by the media data input / output unit 53 via the interface C55 in the media data processing device 5 (step S21).

  When the IP packet is received, the media data processing control unit 52 determines in which connection the received IP packet is received in step S22, and selects a corresponding record in the connection management table 512. In this embodiment, since media data is transmitted and received by TCP, when the media data processing device 5 receives a TCP packet of media data, if no TCP connection exists, a new TCP connection is established.

  In this case, a record that matches all of the “local IP address”, “local port number”, “remote IP address”, and “remote port number” in the connection management table 512 is selected. If there is no matching record, select a record that matches all of "Local IP Address", "Local Port Number", and "Remote IP Address", and only "Remote Port Number" is blank. Set the remote port number of the TCP connection in "Remote port number" above. If there is still no matching record, select a record that matches both "Local IP address" and "Local port number", and "Remote IP address" and "Remote port number" are blank. Set the remote IP address and remote port number of the TCP connection in “Remote IP address” and “Remote port number”.

  For example, when the media data processing apparatus 5 receives the media data sent by the terminal under test 3, the record “1” in the media data processing management table 513 shown in FIG. 25 is selected. Further, when the media data processing apparatus 5 receives the media data sent by the jig terminal 2, the record “2” in the media data processing management table 513 shown in FIG. 25 is selected.

  Upon receiving media data from the media data input / output unit 53, the media data processing control unit 52 outputs the received media data to the media data display unit 542 for display in step S23. As the display method, when the media data is text data or video, a method of displaying it as visible information on a screen such as a display, and when the media data is sound, a method of outputting as audible sound from a speaker or the like is used. As another display method, specific media data and its display method (displayed or highlighted on the screen, sounding BEEP, etc.) are designated in advance, and only when the designated media data is received. A method of performing display by a designated method is also conceivable.

  Next, in step S24, the media data processing control unit 52 refers to the media data processing condition table 511 and determines whether the media data received from the media data input / output unit 53 includes a processing target. In this case, the media data processing condition table 511 to be referred to is determined with reference to the corresponding record in the media data processing management table 513 selected in step S22.

  As illustrated in FIG. 18, FIG. 21, and FIG. 24, the media data processing condition table 511 includes “processing target”, “user data input target flag”, “processing method”, and “processing additional information”. If “processing object” is included, the process proceeds to step S25; otherwise, the process proceeds to step S28.

  In step S25, the media data processing control unit 52 determines whether to accept user input through the user data input unit 541. This determination is made based on whether the “user data input target flag” in the media data processing condition table 511 is “true” or “false”.

  If the “user data input target flag” is “true”, the media data processing control unit 52 accepts a user input through the user data input unit 541 in step S26. In this state, it is assumed that the user inputs information for performing arbitrary processing on the target media data based on the target test content. Then, the media data processing control unit 52 processes the media data with the input data. Examples of such processing include rewriting some data such as character strings, rewriting all data such as character strings, and deleting all media data. Further, it is possible to delay the output of the media data by maintaining the user input waiting state for a certain time without processing the media data itself.

  On the other hand, if the “user data input target flag” is “false” or the “user data input target flag” does not exist, the media data processing control unit 52 proceeds to step S27, where media data processing is performed. The target media data is processed according to the “processing additional information” set in the condition table 511.

  For example, when the setting information of the media data processing condition table 511 is as shown in FIG. 18, media including <File> ˜ </ File> in <ContentLayerCapability> ˜ </ ContentLayerCapability> as shown in FIG. The data is processed to insert <VideoTel /> immediately after that. As a result, the processed media data is as shown in FIG.

  If the setting information of the media data processing condition table 511 is as shown in FIG. 21, <sid> abc123def </ sid> in <CancelShareContent> to </ CancelShareContent> is changed to <sid as shown in FIG. Perform processing to replace data with> 456xyz789 </ sid>. As a result, the processed media data is as shown in FIG.

  Furthermore, when the setting information of the media data processing condition table 511 is as shown in FIG. 24, the output of media data including <KeepAlive /> is delayed by 60 seconds.

  When the media data processing by step S26 or step S27 is completed, the media data processing control unit 52 displays the media data after the processing on the media data display unit 542 in step S28. As a display method, as in the case of displaying received media data before processing in step S23, if the media data after processing is text data or video, it is output and displayed as visible information on a screen such as a display. In addition, when the media data is sound, a method of outputting it as an audible sound to a speaker or the like can be considered.

  Note that specific media data and its display method (displayed or highlighted on the screen, sounding a BEEP sound, etc.) are designated in advance, and the designated method is displayed only when the designated media data is received. It can be considered that. Also, the media data display processing before and after the processing in steps S23 and S28 described above can be omitted.

  Finally, in step S29, the media data processing control unit 52 refers to the previously selected record of the media data processing management table 513, acquires information necessary for transmission of the media data, and then performs the above processing. The media data is converted into an IP packet and sent from the media data input / output unit 53 to the terminal under test 3 or the jig terminal 2 via the interface C55.

  When transmitting the IP packet, the TCP connection used for transmission is determined with reference to “transmission TCP connection” in the media data processing management table 513 shown in FIG. When the media data is transmitted, if there is no TCP connection, the IP address and port number of the transmission source and the transmission destination are acquired with reference to the connection management table 512 of FIG. Establishes a new TCP connection.

(effect)
As described above in detail, in the second embodiment, the media data processing device 5 is provided independently of the test device 1. Then, in the test apparatus 1, the IP address and port number representing the destination of the specific media communication included in the SIP message transmitted from the terminal under test 3 and the SDP information in response to the SIP message returned from the jig terminal 2. Is rewritten to the IP address and port number used by the media data processing unit, thereby causing the media data transmitted from the terminal 3 to be tested and the jig terminal 2 to be transferred to the media data processing device 5 thereafter. Then, in the media data processing apparatus, according to the information input by the user or the processing additional information preset in the media data processing condition table 511, the processing necessary for the test is performed on the transferred media data. The media data after this processing is relayed and transferred to the destination terminal.

  Therefore, even if the IP address and port number used for media communication are different in each communication, or even in the case of media communication in which communication is started independently without using SIP, the proxy function can be surely exhibited. Furthermore, in the case where the jig terminal 2 uses the same port number when performing media communication as a SIP application and when performing media communication performed independently by the media communication module, media communication that is not subject to testing is performed. On the other hand, the proxy function can be disabled.

[Third Embodiment]
In the third embodiment of the present invention, the function of the media data processing apparatus is provided in the test apparatus, and the test target terminal when the media data transmitted between the test terminal and the jig terminal is changed is provided. When performing a test to confirm the behavior, the destination information of the specific SIP message used for the test is replaced with the IP address and port number that are dynamically set in the test equipment. The media data transmitted from the jig terminal is transferred to the test apparatus. Then, the media data processing apparatus provided in the test apparatus performs the processing necessary for the test on the media data, and then relays and transfers it to the destination terminal.

  FIG. 28 shows a communication sequence of the SIP message and media data in this embodiment. In this figure, after the terminal under test 3 sends an INVITE request as a SIP message, the jig terminal 2 returns a 200 response to the INVITE request, and thereafter the media between the terminal under test 3 and the jig terminal 2 An example of transmitting an IP packet of data is illustrated. Note that the provisional response message between the INVITE request and the 200 response to the INVITE request is omitted. In addition to the INVITE request and its response, other SIP messages including SDP information such as an UPDATE request can be applied as the SIP message.

(Constitution)
FIG. 27 is a block diagram showing the functional configuration of the test apparatus according to the third embodiment of the present invention, together with the functional configurations of the terminal under test and the jig terminal. In the figure, the same parts as those in FIGS. 1 and 10 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 27, the terminal 3 to be tested and the jig terminal 2 each have an IP address and can communicate with each other via a network. The test apparatus 10 is connected to the terminal under test 3 and the jig terminal 2 via the hub 4 and has an IP address that communicates with both the terminal under test 3 and the jig terminal 2.

  For example, the terminal under test 3 has an IP address “192.168.10.33”, and the jig terminal 2 has an IP address “192.168.10.44”. The test apparatus 10 has an interface X13 and an interface Y14 that are bridge-connected via an IP packet transfer processing unit 12, which will be described later, and at the same time has “192.168.10.90” as an IP address. IP communication with the terminal 2 is possible. Further, in order to send and receive the SIP message, both the terminal under test 3 and the jig terminal 2 use the “5060” port of the UDP protocol.

  In order to transmit media data, the terminal 3 under test uses the TCP port 53333 and the jig terminal 2 uses the TCP port 54444. However, in the present embodiment, the only thing that is known in advance before the test is that TCP is used, and that the port number is not known in advance.

  On the other hand, the test apparatus 10 transmits the media data between the terminal under test 3 and the jig terminal 2 using the “59040” port to relay the transmission of the media data between the terminal under test 3 and the jig terminal 2. Then, media data is transmitted to the jig terminal 2 using the “59030” port.

  In addition to connecting the terminal 3 under test and the jig terminal 2 to the test apparatus 10 via the hub 4, when a SIP server exists on the network, SIP communication is possible via this SIP server. It may be configured to connect to a different state.

  By the way, when processing the SIP message transmitted between the terminal under test 3 and the jig terminal 2, the test apparatus 10 and the IP address of the test apparatus 10 and the port number on the media data input / output unit 53 are processed. Has a function of dynamically setting.

  That is, in the first and second embodiments described above, the IP address of the test apparatus 1 is not necessarily set, whereas in the third embodiment, the test apparatus 10 needs to set an IP address. The point is different. Specifically, in the test apparatus 1 shown in FIGS. 1 and 10, the interface X13 and the interface Y14 are bridge-connected via the IP packet transfer processing unit 12, and other than SIP packets are processed without processing from one interface to the other. Pass through the interface. On the other hand, in the test apparatus 10 of the third embodiment, the interface X13 and the interface Y14 are the same in that they are bridge-connected via the IP packet transfer processing unit 12, but the IP packet transfer processing unit 12 is the routing function unit. 121, and the test apparatus 10 has an IP address and a port number for transmitting and receiving the media data IP packet, so that the media data IP packet is received, processed, and transmitted.

  The routing function unit 121 holds, for each destination IP address, a routing table for managing the next hop IP address and interface information to be used, an ARP table, and the like. When transmitting the IP packet, the MAC address resolution of Ethernet (registered trademark) is performed as necessary, and the IP packet is transmitted through the interface X13 or the interface Y14.

  As in the second embodiment, the third embodiment confirms the behavior of the terminal under test 3 when changes are made to the media data transmitted between the terminal under test 3 and the jig terminal 2. The test is performed. Regarding the target media data, the media description part in the SDP information of the corresponding SIP message must be set as m = line, the media part is application, the proto part is TCP, and the fmt part is vnd.example.messaging However, the media part, proto part, and fmt part may be different depending on the content of the test.

  In the third embodiment, the SDP information included in the INVITE request transmitted from the terminal under test 3 to the jig terminal 2 and the SDP information included in the response returned from the jig terminal 2 are By processing 10, the transmission destination address of the media data of the terminal under test 3 and the transmission destination address of the media data of the jig terminal 2 are both replaced with the IP address of the test apparatus 10. After that, the media data transmitted from the terminal under test 3 and the jig terminal 2 is received by the test apparatus 10 and processed into data necessary for the test by the media data processing unit 50 in the test apparatus 10. By transferring the data to the tool terminal 2 and the terminal under test 3, a test for confirming the behavior of the terminal under test 3 regarding the change of the media data is enabled.

  In the third embodiment, the terminal under test 3 sends an INVITE request as a SIP message and starts communication with the jig terminal 2. However, the jig terminal 2 sends an INVITE request to the terminal under test 3. It is also possible to start communication by sending it out.

  The SIP message processing unit 110 of the test apparatus 10 includes a media data processing IP address table 113 in addition to the SIP message processing condition table 111 and the SIP message processing control unit 112. In the media data processing IP address table 113, the IP address and port number set on the test apparatus 10 are set for each terminal under test 3 in order to process the media data by the media data processing unit 50 provided in the test apparatus 10. Hold.

  When processing the SIP message, the SIP message processing control unit 112 identifies the terminal 3 to be tested that has transmitted the SIP message, and refers to the media data processing IP address table 113 to transmit / receive media data. For this purpose, the IP address and port number to be used are set in the test apparatus 10. FIG. 35 shows an example of the media data processing IP address table 113.

  That is, a plurality of records are stored in the media data processing IP address table 113, and each record includes “terminal IP address under test”, “jig terminal IP address”, “IP address used”, “transmission / reception of terminal under test”. "Port number for use" and "port number for jig terminal transmission / reception".

  The “terminal under test IP address” is used as information for identifying the terminal under test 3. The “jig terminal IP address” is used as information for specifying the jig terminal 2. In the “used IP address”, an IP address set in the test apparatus 10 is set. In the “port number for terminal transmission / reception”, a port number used for transmitting / receiving media data to / from the terminal under test 3 is set. In “Jig terminal transmission / reception port number”, a port number used for transmitting / receiving media data to / from the jig terminal 2 is set.

  The terminal under test 3 and the jig terminal 2 use one TCP connection for transmission / reception of media data. For this reason, the media data processing IP address table 113 is configured to hold the “terminal number for terminal transmission / reception” and the “port number for jig terminal transmission / reception”. However, if the terminal under test 3 and the jig terminal 2 use different TCP connections for transmission and reception of media data, the “port number for receiving the terminal under test”, “port number for transmitting the terminal under test”, “Jig terminal reception port number” and “Jig terminal transmission port number” are held. The same applies to the case of using UDP for transmission / reception of media data.

  The system shown in FIG. 27 shows a case where there is only one terminal 3 under test. In this case, for the terminal under test 3, the record “in the media data processing IP address table 113 shown in FIG. 1 ”is associated. “192.168.10.33”, which is the IP address of the terminal 3 under test, is set in the “terminal under test IP address”. In the “used IP address”, an IP address that can communicate with both the terminal under test 3 and the jig terminal 2 is set. For example, “192.168.10.90” is set on the assumption that both the terminal under test 3 and the jig terminal 2 can communicate with each other. A random IP address may be set as long as the condition is satisfied.

  “59030” and “59040” are set as two different port numbers in “Port number for terminal transmission / reception” and “Port number for jig terminal transmission / reception”, but the IP address for media data processing Random values may be set as long as they do not overlap with each other, including “test terminal transmission / reception port number” and “jig terminal transmission / reception port number” in other records of the table 113.

  Next, the SIP message processing condition table 111 is constructed according to the setting contents of the media data processing IP address table 113. When the contents of the media data processing IP address table 113 are changed, the SIP message processing condition table 111 needs to be changed.

  Each record of the SIP message processing condition table 111 includes “message matching condition”, “processing target”, and “processing content”, as in the second embodiment. The SIP message processing control unit 112 processes the portion specified by “processing target” to the content specified by “processing content” for the SIP message that matches the message matching condition.

  Further, each record of the SIP message processing condition table 111 is “media data processing IP address table reference record” which is reference information to the corresponding record of the media data processing IP address table 113 in addition to the above fields. And “transmission destination terminal” which is information of the transmission destination terminal of the SIP message.

  For example, as shown in the communication sequence of FIG. 28, the SIP message processing control unit 112 in the test apparatus 10 processes a SIP message transmitted and received between the terminal under test 3 and the jig terminal 2, The media data processing control unit 52 relays and processes media data transmitted and received between the terminal under test 3 and the jig terminal 2.

  In particular, SIP message processing performed by the SIP message processing control unit 112 processes the SDP information included in the SIP message, and the device under test 3 and the jig terminal 2 transmit media data by the processing. The transmission destination address at that time is changed to be the test apparatus 10. Specifically, in order to process the SDP information included in the INVITE request transmitted by the terminal under test 3 and the SDP information included in the 200 response to the request transmitted by the jig terminal 2, the record shown in FIG. Information of “1” and record “2” is stored in the SIP message processing condition table 111.

  The SIP message processing condition table 111 stores a record for processing an INVITE request and a record for processing a 200 response for each set of the terminal under test 3 and the jig terminal 2. Also, the IP address and port number information held in these records is matched with the media data processing IP address table 113. In this example, each of the terminal under test 3 and the jig terminal 2 is only one, and the media data processing IP address table 113 shown in FIG. 35 corresponds to the terminal under test 3 and the jig terminal 2. One record is included.

  In the SIP message processing condition table 111, as shown in FIG. 30, the record “1” for processing the INVITE request transmitted by the terminal under test 3 and the 200 response received by the terminal under test 3 are processed. A record “2” is included. In the “message matching condition” included in the record “1”, the IP address of the terminal under test 3 is set as the condition of the source of the IP packet. As the IP address of the terminal 3 under test, the same “192.168.10.33” as the “terminal under test IP address” stored in the record “1” of the media data processing IP address table 113 of FIG. 35 is set. .

  In the “processing target” included in the record “1”, the m = application line in the SDP information included in the INVITE request is set. It is assumed that the terminal under test 3 sets “9” in the port portion as described in RFC 4145, and the port number actually used by the terminal under test 3 for media transmission / reception is not known in advance. When a value other than “9” is set in the port portion, a regular expression that matches the port portion with an arbitrary numerical value is used so that it can be handled.

  “Processing content” included in the record “1” is to change the port portion of the m = line of “processing target” and add the c = line immediately after the m = line. The port part of the m = line after the change sets the port number on the media data input / output unit 53 of the test apparatus 10 for receiving the media data IP packet sent out by the jig terminal 2. As this port number, the same “59030” as the “jig terminal transmission / reception port number” of the record “1” of the media data processing IP address table 113 of FIG. 35 is set. The IP address of the test apparatus 10 is set in the connection-address portion of the added c = line. As the IP address of the test apparatus 10, “192.168.10.90”, which is the same as the “use IP address” of the record “1” in the media data processing IP address table 113 of FIG. 35, is set.

  When the SDP information before processing is different from FIG. 31 and the terminal 3 under test sends an INVITE message in which c = line is described after m = line, m is set to “processing target” of record “1”. The “c =” line may be added after the “=” line, and the connection-address part of the “c =” line may be changed to the IP address of the test apparatus 10 in the “processing content”.

  In the “media data processing IP address table reference record” included in the record “1”, the record “1” of the media data processing IP address table 113 in FIG. 35 is set. Information indicating that it is the jig terminal 2 is set in the “destination terminal” included in the record “1”.

  In the “message matching condition” included in the record “2” of the SIP message processing condition table 111 in FIG. 30, the IP address of the terminal under test 3 is set as the condition of the IP packet transmission destination. As the IP address of the terminal 3 under test, the same “192.168.10.33” as the “terminal under test IP address” of the record “1” in the media data processing IP address table 113 of FIG. 35 is set.

  In the “processing target” included in the record “2”, the m = application line in the SDP information included in the 200 response to the INVITE request is set. For example, since it is assumed that the port number that the jig terminal actually uses for media transmission / reception is not known in advance, a regular expression that matches the port part with an arbitrary numerical value is used.

  In the “processing content” included in the record “2”, information for changing the port portion of the “processing target” m = line and adding the c = line immediately after the m = line is set. In the port part of the m = line after the change, a port number on the media data input / output part 53 of the test apparatus 10 for receiving the IP packet of the media data sent from the terminal under test 3 is set. As this port number, “59040”, which is the same as “Port number for transmitting / receiving terminal under test” of record “1” in the media data processing IP address table 113 of FIG. 35, is set. The IP address of the test apparatus 10 is set in the connection-address portion of the added c = line. As the IP address of the test apparatus 10, “192.168.10.90”, which is the same as the “use IP address” of the record “1” of the media data processing IP address table 113 in FIG. 35, is set.

  In addition, when the SDP information before processing is different from that in FIG. 33 and the jig terminal 2 sends a response describing c = line after m = line, m = in the “processing object” of the record “2”. A c = line may be added after the line, and the connection-address part of the c = line may be changed to the IP address of the test apparatus 10 in the “processing content”.

  In the “media data processing IP address table reference record” included in the record “2”, the record “1” of the media data processing IP address table 113 in FIG. 35 is set. In the “destination terminal” included in the record “2”, information indicating that the terminal under test 3 is set.

  The test apparatus 10 prepares the SIP message processing condition table 111 in advance to process the SDP information of FIG. 31 included in the INVITE request into the SDP information shown in FIG. 32, and also includes a 200 response to the request. The SDP information 33 is processed into the SDP information shown in FIG.

  The media data processing management table 513 is shown in FIG. 36, and the connection management table 512 is shown in FIG. In the figure, “local IP address” and “local port number” are on the test apparatus 10. The connection management table 512 is constructed in accordance with the contents of the media data processing IP address table 113. When the contents of the media data processing IP address table 113 are changed, the connection management table 512 is also changed.

  Each record of the connection management table 512 includes a “media data processing IP address reference record” that is a reference to a record of the corresponding media data processing IP address table 113 in addition to the fields shown in the second embodiment. And “opposite terminal” which is information of the opposite terminal of the connection.

  The record “1” in the connection management table holds information on a TCP connection used for transmission / reception of media data between the terminal under test 3 and the test apparatus 2. The TCP connection of this record “1” is internally referred to by C1. In the “local IP address” of the record “1”, “192.168.10.90” which is the same as the “used IP address” of the record “1” of the media data processing IP address table 113 shown in FIG. 35 is set.

  In addition, “59040” is set in the “local port number” of the record “1”. This is because the terminal under test 3 uses the IP message and TCP port number used by the jig terminal 2 for transmission and reception of media data by processing the SIP message based on the record “2” in the SIP message processing condition table 111 of FIG. This is to recognize the port “59040” of “192.168.10.90”.

  In the “remote IP address” of the record “1”, “192.168.10.33” which is the same as the “terminal IP address to be tested” of the record “1” in the media data processing IP address table 113 of FIG. 35 is set. In the present embodiment, the port number used by the terminal under test 3 for transmission / reception of media data is not known in advance. For this reason, the “remote port number” of the record “1” is empty in the initial state. Then, when the TCP connection is actually established, the port number used by the partner terminal is acquired and set in this field.

  The record “1” of the media data processing IP address table 113 in FIG. 35 is set in the “media data processing IP address table reference record” of the record “1”. In addition, information indicating that the terminal under test 3 is set in the “opposite terminal” of the record “1”.

  On the other hand, the record “2” holds information of a TCP connection used for transmission / reception of media data between the jig terminal 2 and the test apparatus 10. The TCP connection of this record “2” is internally referred to by C2.

  In the “local IP address” of the record “2”, “192.168.10.90” which is the same as the “used IP address” of the record “1” of the media data processing IP address table 113 in FIG. 35 is set. In addition, “59030” is set in the “local port number” of the record “1”. This is because the jig terminal 2 uses the SIP message processing based on the record “1” in the SIP message processing condition table 111 of FIG. This is because it is recognized as the “59030” port of “192.168.10.90”.

  In the “remote IP address” of the record “2”, “192.168.10.44” which is the same as the “jig terminal IP address” of the record “1” of the media data processing IP address table 113 of FIG. 35 is set. In the third embodiment, the port number used by the jig terminal 2 for transmission / reception of media data is not known in advance. For this reason, the “remote port number” of the record “2” is empty in the initial state. When the TCP connection is actually established, the port number used by the partner terminal is acquired and set in this field.

  In the “media data processing IP address table reference record” of the record “2”, the record “1” of the media data processing IP address table 113 in FIG. 35 is set. In the “opposite terminal” of the record “2”, information indicating that it is the jig terminal 2 is set.

(Operation)
Next, the operation of the test apparatus 10 configured as described above will be described. FIG. 29 is a flowchart showing the operation procedure and contents.
The test apparatus 10 of this embodiment sets the IP address and port number used by the media data processing unit 50 to random values each time. For this purpose, when the SIP message processing unit 110 receives the INVITE message to be processed, it generates one random IP address accessible by the terminal under test 3 and two different port numbers, and processes the SIP message. These values are reflected in the condition table 111 and notified to the IP packet transfer processing unit 12 and the media data processing unit 50.

  The two different port numbers to be generated are the transmission destinations of the media data of the terminal under test 3 and the jig terminal 2, respectively. The setting of the IP address and port number in the SIP message processing condition table 111 is shown in FIG. As in record “1” and record “2”, the INVITE request and the 200 response corresponding to the request are performed as a set. For example, when the IP address is “192.168.10.90” and the port numbers are “59040” and “59030”, the SIP message processing condition table 111 is as shown in FIG.

(1) Operation of Test Apparatus 1 First, the following operation is executed in the test apparatus 1.
When the INVITE request is transmitted from the terminal under test 3, the IP packet transfer processing unit 12 of the test apparatus 10 receives the INVITE request through the interface X13 in step S31. When the jig terminal 2 returns a 200 response to the terminal under test 3, the 200 response is received through the interface Y14.

  Next, the IP packet transfer processing unit 12 determines whether or not the destination IP address of the received IP packet is an IP address set in the test apparatus 10 in step S32. In this case, since neither the INVITE request nor the 200 response is addressed to the test apparatus 10, the process proceeds to step S33. Note that the process also proceeds to step S33 when no IP address is set in the test apparatus 10.

  In step S33, the IP packet transfer processing unit 12 determines whether or not the received INVITE request or 200 response is a SIP packet. If it is determined as a SIP packet, the IP packet transfer processing unit 12 passes the SIP packet to the SIP message processing control unit 112. . In step S34, the SIP message processing control unit 112 refers to the SIP message processing condition table 111 and determines whether or not the record in the table 111 is empty. If it is determined that the record is empty, the process proceeds to step S39. If the record is not empty, the process proceeds to step S35.

  In step S35, the SIP message processing control unit 112 selects one record stored in the SIP message processing condition table 111, and the SIP message sent from the IP packet transfer processing unit 12 is the “message” of the selected record. It is determined whether or not the “match condition” is met. For example, if the record is “1”, whether the received SIP message is an INVITE request and the transmission source address of the IP packet is “192.168.10.33”, that is, whether the transmission source is the terminal 3 under test. Determine whether or not. If the record is “2”, the received SIP message is a 200 response to the INVITE request and the destination address of the IP packet is “192.168.10.33”, that is, the destination is the terminal 3 under test. It is determined whether or not there is.

  If the condition does not match as a result of the determination, the next record in the SIP message processing condition table 111 is selected, and it is determined whether or not the “message matching condition” is matched. Similarly, records stored in the SIP message processing condition table 111 are sequentially selected to determine whether or not the “message matching condition” is matched.

  When the received SIP message matches the message matching condition, the SIP message processing control unit 112 sends the IP address and media data input / output of the test apparatus 10 to the IP packet transfer processing unit 12 and the media data processing control unit 52 in step S36. The port number on the unit 53 is notified.

  For example, when the SIP message processing control unit 112 changes the port part of m = line and adds c = line included in the INVITE request sent by the terminal 3 under test, the port part after the change of m = line And the IP address included in the added c = line are notified to the IP packet transfer processing unit 12 and the media data processing control unit 52. The IP address and port number notified here are the “used IP address” and “jig terminal transmission / reception port number” included in the corresponding record of the media data processing IP address table 113. In particular, regarding the notification of the port number, information that is a port number for transmitting and receiving media data with the jig terminal 2 is also notified.

  In addition, when a 200 response to the INVITE request sent by the jig terminal 2 is received, when changing the port portion of m = row and adding c = row included in the response, m = change of row The port number of the subsequent port part and the IP address included in the added c = line are notified to the IP packet transfer processing part 12 and the media data processing control part 52. The IP address and port number notified here are the “used IP address” and “port number for transmitting / receiving terminal under test” included in the record of the corresponding media data processing IP address table 113. In particular, regarding the notification of the port number, information that is a port number for transmitting and receiving media data with the terminal under test 3 is also notified.

  When receiving the IP address information, the routing function unit 121 of the IP packet transfer processing unit 12 stores the IP address. This IP address is used when determining in step S32 whether the destination is the test apparatus 10 when media data from the terminal under test 3 and the jig terminal 2 is received thereafter. Upon receiving the port number information, the media data processing unit 50 receives the port number for media data transmission / reception with the jig terminal 2 and the media data transmission / reception with the terminal 3 under test. Are set in the media data input / output unit 53, respectively. As a result, media data can be transmitted and received between the jig terminal 2 and the terminal under test 3 thereafter.

  Note that the IP address and port number notification processing in step S36 is performed when the SIP message processing control unit 112 performs SIP message processing, and the IP address of the test apparatus 10 and the port number on the media data input / output unit 53. This process is necessary when setting or changing a password. On the other hand, it is not necessary when the IP address of the test apparatus 10 and the port number on the media data input / output unit 53 are not newly set or changed. In this case, no processing is performed and the process proceeds to step S37.

  In the case where the IP address of the test apparatus 10 used for processing and transferring media data between the terminal under test 3 and the jig terminal 2 and the port number on the media data input / output unit 53 are set to random values. In this case, the record of the media data processing IP address table 113 may be updated at the beginning of step S36.

  Specifically, when processing the INVITE request sent out by the terminal 3 under test, the source IP address of the IP packet of the INVITE request is set in the “terminal IP address under test” of the table 113, and “Jig” Set the destination IP address of the IP packet of the INVITE request in “Terminal IP address”, set the IP address randomly generated in “IP address used”, and “Port number for transmitting / receiving terminal under test” and “Jig” A randomly generated port number may be set in “terminal port number”.

  In addition, with the update of the media data processing IP address table 113, the SIP message processing IP table 111 and the connection management table 512 corresponding to the records in the table 113 are updated.

  Among these, for the SIP message processing IP table 111, the “processing content” of the corresponding record is updated in response to the update of the “media processing IP address table reference record”. For example, for a record in which “destination terminal” is jig terminal 2, the value of “jig terminal transmission / reception port number” in media processing IP address table 113 is set in the port portion of m = line, and c The value of “use IP address” of the media processing IP address table 113 is set in the connection-address portion of the = line. On the other hand, for the record in which the “destination terminal” is the terminal 3 under test, the value of the “port number for transmitting / receiving the terminal under test” in the media processing IP address table 113 is set in the port portion of the m = line, The “use IP address” value of the media processing IP address table 113 is set in the connection-address portion of the c = line.

  For the connection management table, the corresponding record is updated in accordance with the update of the “Media processing processing IP address table reference record”. For example, for the record in which the “opposite terminal” is the terminal 3 under test, the “use IP address” value of the media processing IP address table 113 is set in the “local IP address” and the media in the “local port number”. The value of “port number for transmitting / receiving terminal under test” in the processing IP address table 113 is set. For the record whose “opposite terminal” is the jig terminal 2, set the value of “use IP address” in the IP address table 113 for media processing to “local IP address” and media processing to “local port number”. The value of “Jig terminal transmission / reception port number” in the IP address table 113 is set.

  Next, in step S37, the SIP message processing control unit 112 performs the processing indicated in “processing content” on the portion to be “processed” in the received SIP message. If no “processing target” is found, the processing is not performed. The search for “processing object” is performed by character string matching. In the example shown in FIG. 30, “processing object” is specified as a fixed character string. However, if a regular expression is used, a SIP header including a random character string can be specified as “processing object”.

  For example, according to the record “1” of the SIP message processing condition table 111 shown in FIG. 30, m = application * TCP vnd.example.messaging is applied to the SDP information of the INVITE request shown in FIG. Change to m = application 59030 TCP vnd.example.messaging and then add c = IN IP4 192.168.10.90 to the next line. According to the record “2”, m = application * TCP vnd.example.messaging is set to m = application 59040 TCP vnd.example. As shown in FIG. 34 for the SDP information of 200 response to the INVITE request shown in FIG. Processing is changed to messaging and c = IN IP4 192.168.10.90 is added to the next line. That is, in any case, processing for adding the port number set in the media data input / output unit 53 in the test apparatus 10 and the IP address of the test apparatus 10 is performed.

  Finally, in step S38, the SIP message processing control unit 112 recalculates the checksum value such as the UDP header and the IP header included in the SIP packet, and rewrites the value in the IP packet before processing.

  When the SIP packet message processing is completed, the IP packet transfer processing unit 12 passes the processed IP packet through the other interface different from the interface that received the unprocessed IP packet in step S39. Send. For example, when an INVITE request is received from the terminal under test 3 via the interface X13, the processed INVITE request is transmitted from the interface Y14 to the jig terminal 2. On the other hand, when a 200 response to the INVITE request transmitted from the jig terminal 2 is received via the interface Y14, the 200 response after the processing is transmitted from the interface X13 to the terminal under test 3.

(2) Operation of Media Data Processing Unit 50 Next, the media data processing unit 50 executes the following operation. That is, when an IP packet of media data is transmitted from the terminal under test 3 and the IP address and port number (“57740” port) of the test apparatus 10 are set in the destination information of this IP packet, the IP packet Is received by the media data input / output unit 53 of the media data processing unit 50.

  When the media data IP packet is received, the media data processing control unit 52 first transmits / receives media data to / from the terminal 3 under test or the jig terminal 2 to the destination port number of the received IP packet in step S41. It is determined whether or not the port number on the media data processing unit set for use exists. If the corresponding port number exists, the process proceeds to step S42. If there is no corresponding port, an ICMP error message is generated and the process proceeds to step S49, where the error message is transmitted to the terminal under test 3 that is the transmission source.

  When the IP packet is received, the media data processing control unit 52 determines in which connection the received IP packet is received in step S42, and selects a corresponding record in the connection management table 512. In this embodiment, since media data is transmitted and received by TCP, when the media data processing unit 50 receives a TCP packet of media data, if no TCP connection exists, a new TCP connection is established. .

  In this case, a record that matches all of the “local IP address”, “local port number”, “remote IP address”, and “remote port number” in the connection management table 512 is selected. If there is no matching record, select a record that matches all of "Local IP Address", "Local Port Number", and "Remote IP Address", and only "Remote Port Number" is blank. Set the remote port number of the TCP connection in "Remote port number" above. If there is still no matching record, select a record that matches both "Local IP address" and "Local port number", and "Remote IP address" and "Remote port number" are blank. Set the remote IP address and remote port number of the TCP connection in “Remote IP address” and “Remote port number”.

  For example, when the media data processing unit 50 receives the media data sent from the terminal under test 3, the record “1” in the media data processing management table 513 shown in FIG. 36 is selected. When the media data processing unit 50 receives the media data sent from the jig terminal 2, the record “2” in the media data processing management table 513 shown in FIG. 36 is selected.

  When media data is received from the media data input / output unit 53, the media data processing control unit 52 outputs the received media data to the media data display unit 542 for display in step S43. As the display method, when the media data is text data or video, a method of displaying it as visible information on a screen such as a display, and when the media data is sound, a method of outputting as audible sound from a speaker or the like is used. As another display method, specific media data and its display method (displayed or highlighted on the screen, sounding BEEP, etc.) are designated in advance, and only when the designated media data is received. A method of performing display by a designated method is also conceivable.

  Subsequently, in step S44, the media data processing control unit 52 refers to the media data processing condition table 511 and determines whether the media data received from the media data input / output unit 53 includes a processing target. In this case, the media data processing condition table 511 to be referred to is determined with reference to the corresponding record in the media data processing management table 513 selected in step S42.

  The media data processing condition table 511 includes “processing target”, “user data input target flag”, “processing method”, and “processing additional information”. If “processing object” is included, the process proceeds to step S45. Otherwise, the process proceeds to step S48.

  In step S45, the media data processing control unit 52 determines whether to accept user input through the user data input unit 541. This determination is made based on whether the “user data input target flag” in the media data processing condition table 511 is “true” or “false”.

  If the “user data input target flag” is “true”, the media data processing control unit 52 accepts a user input through the user data input unit 541 in step S46. In this state, it is assumed that the user inputs information for performing arbitrary processing on the target media data based on the target test content. Then, the media data processing control unit 52 processes the media data with the input data. Examples of such processing include rewriting some data such as character strings, rewriting all data such as character strings, and deleting all media data. Further, it is possible to delay the output of the media data by maintaining the user input waiting state for a certain time without processing the media data itself.

  On the other hand, when the “user data input target flag” is “false” or the “user data input target flag” does not exist, the media data processing control unit 52 proceeds to step S47, where the media data processing target flag is set. The target media data is processed according to the “processing additional information” set in the condition table 511. Since a specific example of the processing for the media data is the same as that in the second embodiment, illustration is omitted.

  When the media data processing in step S46 or step S47 is completed, the media data processing controller 52 causes the media data display unit 542 to display the media data after the processing in step S48. As a display method, as in the case of displaying received media data before processing in step S43, if the media data after processing is text data or video, it is output and displayed as visible information on a screen such as a display. In addition, when the media data is sound, a method of outputting it as an audible sound to a speaker or the like can be considered.

  Note that specific media data and its display method (displayed or highlighted on the screen, sounding a BEEP sound, etc.) are designated in advance, and the designated method is displayed only when the designated media data is received. It can be considered that. Also, the media data display processing before and after the processing in steps S43 and S48 described above can be omitted.

  Finally, in step S49, the media data processing control unit 52 refers to the previously selected record of the media data processing management table 513, acquires information necessary for transmission of the media data, and then performs the above processing. Convert media data into IP packets. Then, the routing function unit 121 of the IP packet transfer processing unit 12 sends the generated IP packet from the interface X13 or the interface Y14 to the terminal under test 3 or the jig terminal 2 based on its own routing information. .

(effect)
As described above in detail, in the third embodiment, the media data processing unit 50 is provided in the test apparatus 10, and the destination information of a specific SIP message used for the test is set to the IP address set in the test apparatus 10. By replacing the port number set in the media data input / output unit 53 of the media data processing unit 50 with the media data IP packet transmitted from the terminal 3 to be tested and the jig terminal 2 thereafter. The data is received by the test apparatus 10 and transferred to the media data processing unit 50. Then, the media data processing unit 50 performs processing necessary for the test on the received media data IP packet, and then performs IP packet transfer processing on the IP packet of the processed media data. The unit 12 transmits the signal toward the jig terminal 2 and the terminal under test 3.

  Therefore, as in the second embodiment, even if the IP address or port number used for media communication is different in each communication, or even if the media communication starts communication independently without using SIP, The proxy function can be demonstrated. In the case where the jig terminal 2 uses the same port number when performing media communication as a SIP application and when performing media communication performed independently by the media communication module, the media communication is not subject to testing. On the other hand, the proxy function can be disabled.

  Furthermore, the IP address on the test apparatus 10 and the port number on the media data input / output unit 53 are set dynamically and randomly. In this way, the IP address and port number information can be made different for each test, and when there is communication log data for each test of the terminal under test 3 and the jig terminal 2, the communication log data is distinguished. Easy to do. In addition, when there are a plurality of terminals under test 3, different values can be set for the IP address and port number used by the media data processing unit 50 for each terminal under test 3. It is possible to execute the tests in parallel.

[Other Embodiments]
The present invention is not limited to the above embodiments. For example, in the third embodiment, the case where the media data processing unit 50 is simply added to the SIP message processing unit 110 and the IP packet transfer processing unit 12 has been described as an example. However, the present invention is not limited thereto, and the tables 111 and 113 in the SIP message processing unit 110 and the tables 511 to 513 in the media data processing unit 50 are provided in one storage unit, or the SIP message processing control unit 112. The processing function of the media data processing control unit 521 may be realized by a single processor.

  In addition, the configuration of each management data stored in each table, the processing target and the processing content, and the like can be variously modified and implemented without departing from the gist of the present invention.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in each embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1,10 ... Test apparatus, 2 ... Jig terminal, 3 ... Terminal under test, 4 ... Hub, 5 ... Media data processing apparatus, 11, 110 ... SIP message processing processing part, 111 ... SIP message processing condition table, 112 ... SIP message processing control unit, 12 ... IP packet transfer processing unit, 13, 14 ... Test device interface, 21 ... SIP application processing unit of jig terminal, 211 ... SIP communication unit, 212 ... Media communication unit, 22 ... Jig Terminal interface, 31 ... SIP application processing unit of terminal under test, 311 ... SIP communication unit, 312 ... Media communication unit, 32 ... Interface of terminal under test, 50 ... Media data processing unit, 51 ... Media data processing device Storage unit 511 ... Media data processing condition table 512 ... Connection management table 513 ... Add media data Management table 52 ... Media data processing control unit 521 ... Timer 53 ... Media data input / output unit 54 ... User interface unit of media data processing apparatus 541 ... User data input unit 542 ... Media data display unit 55 ... Interface for media data processing equipment.

Claims (6)

A communication test apparatus connected so as to enable communication between a terminal under test and a jig terminal each having a communication function using a SIP (Session Initiation Protocol) application, and the terminal under test, the jig terminal, and the communication test apparatus A communication test system comprising a media data processing device connected to be capable of communicating with
The communication test apparatus includes:
Processes message identification information for identifying a SIP message related to the test of the terminal under test, which is transferred between the terminal under test and the jig terminal, and address information for media data communication included in the SIP message First storage means for storing processing condition information including processing target information specified as a target and processing content information specifying address information of the media data processing device as processing content;
When a SIP message is received, whether or not the received SIP message is a SIP message related to the test of the terminal under test is determined based on the message specifying information stored in the first storage means Determination means to perform,
When the SIP message related to the test of the terminal under test is specified by the determining means, the specified SIP message is added to the specified SIP message based on the processing target information and the processing content information stored in the first storage means. Means for changing the address information for media data communication included to the address information of the media data processing device;
Means for transmitting the changed SIP message to the terminal under test or the jig terminal,
The media data processing device includes:
Second storage means for storing media data processing condition information including at least processing target information for specifying a processing target portion in media data and processing content information for specifying processing details of the processing target portion;
Wherein when the terminal to be tested or the jig terminal receives the media data of which destination is the media data processing device, based on the processing object information and the processing content information stored in the second storage means, the receiving Generating means for generating media data for testing by processing a processing target portion of the media data that has been processed;
A communication test system comprising: means for transmitting the generated media data for testing to the jig terminal or the terminal under test. A communication test apparatus connected to be capable of communication between a terminal under test and a jig terminal each having a communication function using a SIP (Session Initiation Protocol) application,
Processes message identification information for identifying a SIP message related to the test of the terminal under test, which is transferred between the terminal under test and the jig terminal, and address information for media data communication included in the SIP message a processing object information designating a target, a first storage means for storing machining condition information including the processing content information specifying the address information before Symbol communications test equipment as processing contents,
Second storage means for storing media data processing condition information including at least processing target information for specifying a processing target portion in media data and processing content information for specifying processing details of the processing target portion;
When a SIP message is received, whether or not the received SIP message is a SIP message related to the test of the terminal under test is determined based on the message specifying information stored in the first storage means Determination means to perform,
When the SIP message related to the test of the terminal under test is specified by the determining means, the specified SIP message is added to the specified SIP message based on the processing target information and the processing content information stored in the first storage means. the address information for media data communication included, and changing means for changing the address information of the communication test device,
Means for transmitting the changed SIP message to the terminal under test or the jig terminal;
Wherein when receiving a media data of which destination is the communication test device from the test terminal or jig terminal, based on the processing object information and the processing content information stored in the second storage means, said received Means for generating media data for testing by processing the processing target portion of the media data,
Means for transmitting the generated media data for testing to the jig terminal or the terminal under test. The changing means is
Each time SIP messages related to testing of the terminal to be tested is received, the IP address of the communication test device, means for setting a randomly generated port number for receiving media data,
Based on the processing target information stored in the first storage means, the media data communication address information included in the received SIP message is changed to the randomly generated and set IP address and port number. The communication test apparatus according to claim 2, further comprising: A communication test apparatus connected so as to enable communication between a terminal under test and a jig terminal each having a communication function using a SIP (Session Initiation Protocol) application, and the terminal under test, the jig terminal, and the communication test apparatus A communication test system comprising a media data processing device connected to be capable of communicating with the communication test system,
The communication test apparatus transfers message specifying information for specifying a SIP message related to the test of the terminal under test, which is transferred between the terminal under test and the jig terminal, and media data communication included in the SIP message. Processing condition information including processing target information that specifies address information for processing as processing target and processing content information that specifies address information of the media data processing apparatus as processing content;
When the communication test apparatus receives a SIP message, the message stored in the first storage means whether or not the received SIP message is a SIP message related to the test of the terminal under test. A process of determining based on specific information;
When the communication test apparatus identifies a SIP message related to the test of the terminal under test in the determination process, based on the processing target information and processing content information stored in the first storage unit, Changing the address information for media data communication included in the identified SIP message to the address information of the media data processing device;
The communication test apparatus transmits the changed SIP message to the terminal under test or the jig terminal,
The media data processing device has second storage means for storing media data processing condition information including at least processing target information for specifying a processing target site in media data and processing content information for specifying processing content of the processing target site. The process of memorizing
The media data processing device, wherein when the terminal to be tested or the jig terminal receives the media data of which destination is the media data processing device, the processing object information and processing contents stored in the second storage means A process of generating media data for testing by processing a processing target portion of the received media data based on the information;
The media data processing apparatus comprises a step of transmitting the generated media data for testing to the jig terminal or the terminal under test. A communication test method executed by a communication test apparatus connected to be able to communicate between a terminal under test and a jig terminal each having a communication function using a SIP (Session Initiation Protocol) application,
The communication test apparatus transfers message specifying information for specifying a SIP message related to the test of the terminal under test, which is transferred between the terminal under test and the jig terminal, and media data communication included in the SIP message. a processing object information specifying the address information of the use as a processing object, comprising the steps of storing the address information before Symbol communications test equipment machining condition information including the processing content information designated as a processing content in the first storage means ,
Media communication processing condition information including at least processing target information for specifying a processing target portion in media data and processing content information for specifying processing content of the processing target portion in the second storage means. The process of remembering,
When the communication test apparatus receives a SIP message, the message stored in the first storage means whether or not the received SIP message is a SIP message related to the test of the terminal under test. A process of determining based on specific information;
When the communication test apparatus identifies a SIP message related to the test of the terminal under test in the determination process, based on the processing target information and processing content information stored in the first storage unit, the address information for media data communication contained in the SIP message is identified, and the process of changing the address information of the communication test device,
The communication test apparatus transmits the changed SIP message to the terminal under test or the jig terminal,
The communication test device, wherein, when it receives the media data of which destination is the communication test device from the test terminal or jig terminal, the processing object information and the processing content information stored in the second storage means A process of generating test media data by processing a processing target portion of the received media data,
The communication test apparatus comprises a step of transmitting the generated test media data to the jig terminal or the terminal under test. The program which makes the computer with which the said communication test apparatus or the communication test system comprises perform the process performed in each process which the communication test method of Claim 4 or 5 comprises.

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