JPH03270543A - Isdn layer three protocol test system - Google Patents

Abstract

PURPOSE:To generate test data relating to the reception of a call automatically by utilizing a dial function possessed by a terminal so as to provide function fetching matching confirmation information of a communication function of the terminal and re-editing the information to a test device. CONSTITUTION:A terminal equipment 1 sends call setting information C1 including matching confirmation information M1 to confirm the matching with an opposite party to an ISDN network 2. An information element content extraction section 3 extracts matching confirming information M1 from the call setting information C1 received from the terminal equipment 1 and rewrites the matching confirming information M1 extracted from the call setting information C1 by an edit work section 4 into matching confirming information M2 for the terminal equipment 1 put into an R setting information C2 to the terminal equipment 1. A test matching confirming information generating section 5 sends the matching confirming information M2 edited from the edit work section 4 to the terminal equipment 1 to confirm the adequacy of the matching confirming information M2 by receiving its reply signal. When the matching confirming information M2 is adequate, the matching confirming information M2 is used for the call setting information C2 sent to the terminal equipment 1 at the test. On the other hand, when the matching confirming information M2 is inadequate, the matching confirming information M2 is aborted.

Description

[Detailed description of the invention]

[Summary] Concerning a test method to confirm whether the protocol-based @ function that controls call establishment between terminal devices and the network connected via a 377-point interface in an integrated service digital communication network operates correctly on the terminal side. , The purpose of this is to automatically create the compatibility confirmation information necessary for testing the layer 3 function of the terminal TE using the terminal's calling function, and to check the compatibility with the communication function of the other party. In a protocol function test between an ISDN network and a terminal, which controls call establishment, which is initiated by sending call setup information including consistency confirmation information to the terminal and receiving a return signal from the terminal, an information element content extracting unit that extracts the consistency check information from the call setting information received by the terminal; and a matching unit for the terminal that inserts the consistency check information extracted from the call setting information into the call setting information for the terminal. an editing section that rewrites the integrity confirmation information to the integrity confirmation information; and the editing section sends the edited consistency confirmation information to the terminal, and receives an acceptance response signal to confirm the consistency of the integrity confirmation information. A testing consistency check information generation unit is provided, and the call setup information carrying the rewritten consistency check information is sent to the terminal during a protocol function test. [Industrial Application Field] The present invention is applicable to integrated service digital communication networks (ISDN).
: Integrated 5 services Dig
Terminal equipment (TE:
The present invention relates to a test method for confirming whether a protocol control function that controls call establishment initiated between terminal equipment and a network operates correctly on the terminal side. Between a terminal equipment TE connected via a 377-point interface to an ISDN service network that integrates public networks, digital communication networks, FAX networks, packet networks, etc., and the network,
There is a layer 3 communication function that specifies the sequence in which call origination, paging, disconnection messages, etc. are exchanged, and the ISDN network side is equipped with test equipment (protocol simulator) that simulates network operations. . This protocol simulator sends a call setup message carrying integrity confirmation information to the terminal, and checks whether the terminal returns a message according to the regulations when a certain message is sent in the layer 3 protocol that is started. This is a test to determine whether The above-mentioned consistency i recognition information is used by the communication function of the terminal TE to determine whether communication is possible with the other party's communication function when a call is received. Packet exchange, information transfer rate (64kbps,
384 kbps, 1536 kbps), etc.; a lower layer compatibility information element 52 indicating more detailed lower layer communication functions, such as communication speed; and a lower layer compatibility information element 52 indicating whether the terminal is a facsimile, telex, videotex, etc. Higher layer information element 53, originating sub-address information element 54 and originating address information element 55 indicating the address of the originating terminal TE29, and destination sub-address information element 56 and destination address information element 57 indicating the address of the communication destination terminal TE, etc. Consisting of [Prior Art] FIG. 6 is a functional block diagram of a conventional layer 3 protocol testing device. In the figure, 6o is the terminal TE, 61
is a layer 3 message transmitting/receiving section. Reference numeral 62 denotes a protocol test control unit, which sequentially retrieves test data generated for the connected terminal TE60 from the memory 63, transmits a predetermined call control message at the layer 3 message transmitting/receiving unit 61, and confirms that the expected message is received. We will conduct a test to see if it will be returned. The test data in the memory 63 includes test data that starts with a normal response when receiving consistency confirmation information that matches the communication function of the terminal, and consistency confirmation information that does not interfere with the communication function of the terminal. There are two types of test data that begin by sending back a rejection response when received. The procedure for the layer 3 message test will be explained below. First, the tester uses a terminal T connected to the network.
The consistency check information is generated on the E 60 and stored in the memory 63. At this time, the consistency confirmation information created for testing includes test data that indicates whether the terminal responds normally when receiving consistency confirmation information that matches the communication function of the terminal, as described above, and There are two types of test data: when receiving consistency confirmation information that does not match the communication function of the system, it can be rejected or rejected. For example, if the connected terminal TE60 is compatible with each information element marked with a circle in FIG. An information element configured by changing at least one of the consistency confirmation information, for example changing the transmission capability from audio to unrestricted digital, is defined as consistency confirmation information data that cannot be matched with the terminal. FIG. 7 is a diagram showing the sequence of a layer 3 protocol test, and in FIG. 7 (a), the test equipment is a terminal terminal TE6
0 and consistency check information that is consistent with call setup (SET)
UP) This is the case when it is sent as a message. When the test equipment sends consistency check information that is consistent with the terminal TE60 to the terminal TE60 in a call setup (SETUP) message, the terminal TE
60 responds to this and returns a message. Next, the test equipment sends out a disconnect (DISC) message, expecting to receive a release (REL) message from the terminal TE60. The terminal TE60 releases this message (RE
L) Return the message■. The tester recognizes that the terminal TE60 is normal because the predicted release (REL) message has arrived. If a release (REL) message is not obtained here, it is assumed that the terminal TE60 is abnormal. On the other hand, in Fig. 7(b), the test equipment is terminal terminal TE6.
If consistency check information that is inconsistent with
UP) This is the case when it is sent in a message. The test device transmits the inconsistent consistency check information to the terminal TE60 in a call setup (SETUP) message to the terminal TE60. terminal terminal T
E60 indicates release completion (REL COM) as a rejection response.
P) Send a message■. The test device is then released (R
EL) Sends a message, expecting to receive a message from the terminal TE60. Terminal TE60 operates normally and is released (
When the message (REL) is returned, the tester confirms that it is the same as the predicted message and recognizes that the terminal TE60 is normal. If the predicted message is not obtained here, it is assumed that the terminal TE60 is abnormal. [Problem to be Solved by the Invention] In this way, when testing the layer 3 function of the terminal terminal TE60, it is necessary to check the consistency confirmation information that is consistent with the communication function of the terminal terminal TE60 to be connected. A problem has arisen in that the consistency check information that is not available has to be created in advance as test data and manually registered in the memory 63 of the test device, which takes a lot of time to prepare. An object of the present invention is to automatically create consistency confirmation information necessary for testing the layer 3 function of a terminal TE by using the calling function of the terminal. [Means for Solving the Problems] FIG. 1 is a diagram explaining the principle of the present invention. In the figure, terminal 1 has consistency recognition information M1 for checking consistency with the other party.
The call setting information CI containing the information is sent to the ISDN network 2. Reference numeral 3 denotes an information element content extraction unit, which extracts consistency confirmation information M1 from the call setting information CI received from the terminal 1. Reference numeral 4 denotes an editing section which rewrites the consistency check information M1 extracted from the call setting information C1 into the consistency check information M2 for the terminal 1, which is entered into the R setting information C2 for the terminal 1. 5 is a test consistency confirmation information generation section, and an editing section 4
Sends the consistency check information M2 edited from to the terminal 1,
By receiving the response signal, the validity of the consistency confirmation information M2 is confirmed. Then, when testing the protocol function, call setting information C2 including the edited consistency confirmation information M2 is used.
is sent to terminal 1. [Function] In the present invention, the layer 3 of the ISDN communication function of the terminal 1 is
In the function test, consistency confirmation information M2 included in call setup information C1 from terminal l is used. This consistency check information M2 is edited by the editing section 4 into consistency check information M2 to be added to the call setting information C2 to the terminal 1. This edited consistency confirmation information M2 is judged to be valid by the test consistency data generation unit 5, and if it is valid, call setting information that sends this consistency confirmation information M2 to the terminal 1 during the test. C
Used for 2. On the other hand, if it is inappropriate, it will be discarded. [Embodiment] FIG. 2 is a diagram showing an embodiment of the present invention. In the figure, 21
is a layer 3 message transmitting/receiving unit, and is an ISDN S/
Point T isoifinta face layer 3 message is received. 22 is an incoming call control unit, which is a terminal equipment TE20.
This is the control unit for calls received from. 23 is a first memory circuit, and a terminal TE20
Of the messages sent from the incoming call controller 22, only the calling message is received from the incoming call controller 22 and stored. Reference numeral 24 denotes an editing processing unit which edits the consistency check information M1 included in the outgoing message into consistency check information M2 to be included in the incoming call message to the terminal terminal TE20. A second memory circuit 25 stores the consistency check information M2 edited by the editing processing section 24. Reference numeral 26 denotes a call control unit, which uses the contents of the second memory circuit 25 to make a call to the terminal terminal TE20, and monitors the response of the terminal terminal TE20. 27 is a test data creation section, which is a terminal terminal TE.
If the response from the second memory circuit 20 is an affirmative response, data for the layer 3 test is created based on the contents of the second memory circuit 25. 28 is a third memory circuit, which stores test data of the layer 3 test protocol. Reference numeral 29 denotes a protocol test control unit, which, upon receiving a test instruction from the tester, sequentially takes out test data from the third memory circuit 28 and sends it to the terminal TE20 to perform a layer 3 protocol test. The procedure for creating layer 3 protocol test data will be described below. When the terminal TE20 connected to the rsDN network at the S/T point isoifin interface makes a call to the other party, it sends consistency confirmation information M1 supported by the communication function of its own terminal TE20 in addition to the number of the other party. Sends a call setup (SETUP) message carried as layer 3 information to the network side. The test equipment on the network side receives the call setting message from the terminal TE20, and receives layer 3 information from the call setting message at the layer 3 message transmitting/receiving section 21. The incoming call control unit 22 extracts the consistency check information M1 from the received call setting message and stores it in the first memory circuit 23. This consistency confirmation information M1 includes line/packet switching,
Information transfer rate (64kbps384kbps, 15
36 kbps), a lower layer compatibility information element that indicates more detailed lower layer communication functions (for example, communication functions, etc.), and higher layer information that indicates whether the terminal is a facsimile, telex, videotex, etc. element, a calling sub-address information element and a calling address information element indicating the address of the calling terminal TE20, and a calling sub-address information element and a calling address information element indicating the address of the terminal terminal TE of the communication partner. These consistency confirmation information M1 are processed by the editing processing unit 24,
It is edited as consistency confirmation information M2 for the incoming message to the terminal TE20. FIG. 3 is an image diagram of editing work processing. In the figure, the consistency check information M1 on the left side received from the terminal TE20 is edited into the edited consistency check information M2 on the right side. In the consistency confirmation information M1, 31-1 is a transfer capability information element, 321 is a low layer consistency information element, 3
3-1 is a high layer compatibility information element, 34-1 is an originating address information element, 35-1 is an originating subaddress information element, 3
6-1 indicates a destination address information element, and 37-1 indicates a destination sub-address information element. Below, we will explain how to edit the consistency check information. The transmission capability information element 31-1, the low layer compatibility information element 32-1, and the high layer information element 33-■ are directly used as the transmission capability information element 31-2 and the low layer compatibility information element 32- of the consistency confirmation information M2. 2. High layer information element 3
Used as 3-2. "7" which is the originating subaddress information element 35-1 and "180j" which is the originating address information element 34-1 are the destination subaddress information element 37- for the consistency confirmation information M2, respectively.
2 and destination address information element 36-2. 5J, which is the destination subaddress information element 37-1, and r441j, which is the destination address information element 36-1, are the originating subaddress information element 35- for the consistency confirmation information M2, respectively.
2 and originating address information element 34-2. In this way, the information edited as the consistency confirmation information M2 of the incoming message of the terminal TE20 is stored in the second
It is stored in the memory 25. The call control unit 26 retrieves the consistency check information M2 from the second memory circuit and sends a call setup (SETUP) message to the terminal TE20. The terminal TE20 receiving this call setup (S
ETtJP) Integrity confirmation information M2 included in the message
determines whether or not it is possible to communicate with the communication function of its own terminal. When the terminal TE20 determines that communication is possible, it sends a call setup acceptance (CALL PROC) message, a call (ALERT) message, or a response (CO
NN) The message will be returned to you. When the call control unit 26 receives an affirmative response (any of a call setting acceptance message, a paging message, or a response message) from the terminal TE 20, it recognizes that consistency has been established, and sends this consistency confirmation from the second memory circuit 25. The information M2 is passed to the test data creation section 27. On the other hand, when the terminal terminal TE20 determines that it cannot communicate with the communication function of its own terminal, it returns either no response indicating a rejection response or a release completion (REL CoMP) message. Upon receiving this, the call control unit 26 recognizes that matching has not been achieved, and displays a mismatch notification to the tester indicating that matching cannot be achieved with respect to this matching confirmation information. The test data creation unit 27 generates the consistency check information M2 that is consistent with the terminal TE20 and a part of the consistency check information M2 that is consistent with the terminal TE20 (for example,
By rewriting a part of the transmission capability information element), test data of inconsistent consistency confirmation information M2' is created. Then, the above two pieces of consistency confirmation information M2. M2
' is stored in each call setting message portion of the test data third memory circuit 28. Now, when actually performing a layer 3 protocol test on an incoming message from the terminal TE20, the tester gives instructions to the protocol test control section 29. The protocol test control unit 29 sequentially reads the test data from the third memory circuit 28 and sends it to the layer 3 message transmitting/receiving unit 21.
By accessing , the layer 3 protocol test shown in FIG. 6 will be executed.

[Other examples]

Above, an example of use in the layer 3 protocol test has been shown, but in the present invention, the consistency check information element is configured using the consistency check information M2 for the layer 3 protocol test stored in the third memory circuit 28. It can also be used to test the function of a terminal to check each parameter and determine whether communication is possible or not. The parameter check function test of the information element for consistency confirmation will be explained below. Now, considering the case where the consistency of the connected terminal can be determined by the consistency confirmation information consisting of the information elements marked with circles in Figure 5,
For example, regarding the transmission capability information element 51, each parameter is voice, unrestricted digital 3.1kHz, circuit switching, packet switching, and information transmission speed (64kbps/384kb).
ps/1536 kbps) Create eight pieces of consistency confirmation information with all changed. This kind of thing is done for all seven information elements. FIG. 4 is a sequence showing a test of the check function of each parameter constituting the consistency confirmation information element. Figure 4(a) shows that the protocol controller is the terminal terminal TE.
This is a case where the call is set up using consistency confirmation information that is consistent with the above. At this time, the tester receives a call setup acceptance (CALLPROC) message from the connected terminal,
T) Message, response (CONN) Send a call setup (SETUP) message while expecting a response to the message■
'. The tester recognizes that the consistency judgment function of the terminal is normal by receiving the expected message from the connected terminal TE20. FIG. 4(b) shows a case where the protocol simulator sets up a call using consistency confirmation information that is inconsistent with the terminal TE. At this time, the tester sends a call setup (SETUP) message, expecting a response to the release (REL COM) message from the connected terminal. The tester recognizes that the consistency determination function of the terminal is normal by receiving the expected message from the connected terminal TE20. [Effects of the Invention] As explained above, according to the present invention, the terminal TE
In carrying out the Layer 3 function test of the terminal T
It is necessary to create test data according to the communication function of the terminal TE, but use the calling function of the terminal TE to import the consistency confirmation information of the communication function of the terminal TE into the test equipment and re-edit it. By providing this function, test data related to call termination can be automatically created, and there is an effect that tests can be performed immediately in response to tests of terminal terminals TE having various communication functions.

[Brief explanation of drawings]

Fig. 1 is a diagram explaining the principle of the present invention, Fig. 2 is a diagram showing an embodiment of the present invention, Fig. 3 is an image diagram of editing work processing, and Fig. 4 is each parameter constituting the information element for consistency confirmation. Sequence showing the test of the check function of (a) Consistent consistency [When the call is set up using iH information (b) When the call is set up using inconsistent consistency confirmation information Fig. 6 is a functional block diagram of a conventional layer 3 protocol test device; Fig. 7 is a diagram showing the sequence of a layer 3 protocol test. (a) Consistent consistency confirmation information (b) A case where a call is set up using inconsistent consistency confirmation information. The main parts in Figure 1 are as follows. 1... Terminal TE 2... ISDN network 3... Information element content extraction section 4... Editing section

Claims (1)

[Claims] 1 The call setting information (C1) including the consistency confirmation information (M1) for checking the consistency with the communication function of the other party is sent to the terminal (
In a protocol function test between the ISDN network (2) and the terminal (1), which controls call establishment that is started by sending a signal to the terminal (1) and receiving a return signal from the terminal (1), an information element content extraction unit (3) that extracts the consistency confirmation information (M1) from the call setting information (C1) received by the
) and the consistency check information (M1) extracted from the call setup information (C1), and the call setup information (M1) to the terminal (1).
The consistency confirmation information (M
2), and the editing unit (4) sends the edited consistency check information (M2) to the terminal (1), and receives the acceptance response signal. A test consistency check information generation unit (5) is provided to check the consistency of the consistency check information (M2), and during a protocol function test, the rewritten consistency check information (M2) is
) is transmitted to the terminal (1).