JP3069617B2 - Communication terminal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal connected to a digital network such as an ISDN (Integrated Services Digital Network) and capable of responding to at least an incoming call from the digital network. The present invention relates to a communication terminal device having a function of notifying the cause of the failure of the incoming call in the event that the terminal becomes unsuccessful.

[0002]

2. Description of the Related Art In recent years, communication terminal devices used by being connected to a digital network such as ISDN have rapidly become widespread.

However, communication control procedures for digital networks such as ISDN are digitized and include complicated functions as compared with conventional analog networks. There are many cases where it is not established. In this case, the user of the device must analyze where the cause of the communication failure is found and deal with it.

However, since a call control protocol monitor effective for analyzing such a cause is generally expensive, it is usually necessary to infer the cause of the communication failure by referring to the display of the communication terminal device or the communication record. Is performed.

[0005] However, information useful for analyzing such a cause often exists in the transmitting terminal, and the information of the transmitting terminal cannot be displayed and output on the receiving terminal.

[0006] In this case, when the incoming call is not established, the incoming call is destined for another terminal on the same bus or the capability mismatch due to an incorrect call is often reported to the receiving side. This is because it was considered that not reporting anything is more convenient in a normal terminal usage mode.

However, in such a configuration, if the cause of the failure of the incoming call is in the called terminal and it is necessary to analyze the cause, the state of the unsuccessful call in the called terminal is not known at all. Even if the receiving terminal has a cause such as an initial setting error, the cause of the failure of the incoming call cannot be known without checking the display and communication record of the calling terminal, which is very inconvenient.

In recent years, there have been many devices which are configured to enhance their functions by adding various optional devices to the device. However, by adding a handset to such a device, for example, a facsimile device, a telephone function is provided. In the case of an apparatus having a handset, the connector for connecting the handset to the facsimile apparatus main body is not firmly connected, or the initial setting processing of the facsimile apparatus main body necessary for attaching the handset is performed. In some cases, even though it appears to have a telephone function, it may not be possible to actually answer the incoming call.

[0009]

As described above, the above-mentioned conventional communication terminal apparatus does not have a function of properly outputting a state in which the incoming call is not established, so that the incoming call can be received only from the display output information of the receiving side terminal. It was very difficult to analyze the cause of the failure.

It is therefore an object of the present invention to provide a communication terminal device capable of analyzing the cause of the failure of incoming call only on the receiving side terminal side when the incoming call is not established, and notifying the user of the fact.

[0011]

In order to achieve the above object, the present invention relates to a communication terminal apparatus connected to a digital network and performing an incoming call operation based on call setting information from the digital network. Detecting means for detecting whether or not an incoming call is established based on the call setting information; and, if the detecting means detects an unsuccessful incoming call, an unsuccessful cause extracting means for extracting a cause of the unsuccessful incoming call. An incoming call rejection process executing unit that rejects the incoming call based on the incoming unsuccessful cause extracted by the incoming call unsuccessful cause extracting unit, a selecting unit that selects whether or not to notify the cause of the incoming call unsuccessful, and the execution of the incoming call rejection process If the notification of the cause of the failure of the incoming call is selected by the selecting means after the incoming call rejection process is executed by the means, Characterized by comprising a notification means for notifying the extracted incoming satisfied caused by.

[0012]

According to the present invention, whether or not an incoming call is established is detected by a detecting means based on call setting information from a digital network. If the unsuccessful incoming call is detected, the cause of the unsuccessful incoming call is determined. After the call is extracted by the cause extracting means and the incoming call rejection processing is executed by the incoming call rejection processing means, and if the notification of the cause of the incoming call failure is selected by the selecting means, the incoming call failure cause extracted by the incoming call failure cause extracting means is selected. Is notified by the notifying means.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a communication terminal device according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a communication terminal device according to an embodiment of the present invention.

In FIG. 1, a communication terminal device of this embodiment is connected to a bus 9 connected to a central processing unit (CPU) 8.
A network control unit 2 connected to the ISDN 1 for performing network control on the ISDN 1; an incoming call detection unit 3 for detecting an incoming call from the ISDN 1; an unsuccessful detection unit 4 for detecting when an incoming call from the ISDN 1 is not established; When the incoming call is unsuccessful, the incoming call unsuccessful cause identification unit 5 for identifying the cause of the unsuccessful incoming call, the unsuccessful cause detected by the incoming call unsuccessful cause identification unit 5, and other various information related to the operation and operation of this device are transmitted. The display unit 6 is connected to a memory unit 7 for storing various information necessary for operation and operation of the apparatus.

Next, the operation of the communication terminal device shown in FIG. 1 relating to the present invention will be described with reference to the flowchart shown in FIG.

When an incoming call occurs in ISDN 1, incoming call information (call setting information) indicating this incoming call is sent from ISDN 1 to network control unit 2 of the communication terminal device shown in FIG. ISDN
As shown in FIG. 3, the incoming call information notified from 1 to the network control unit 2 includes a call setting message indicating call setting, a calling number element for identifying a destination, information indicating information identification, and a network. Contains information indicating verification identification.

When the incoming call information is notified from the ISDN 1 to the network control section 2, this is detected by the incoming call detecting section 3 and the incoming call is judged (step 101). In the incoming call determination, the validity of the incoming information is determined. If it is determined that the incoming call is possible, the process proceeds to step 106, where normal incoming processing including generation of a ringing tone, automatic facsimile reception operation and the like is performed. You.

However, if it is determined in step 101 that the incoming information is not valid and that the incoming call cannot be made, it is determined that the incoming call is not established, and this is determined as the incoming call unsuccessful detection unit 4 shown in FIG.
, And a cause extraction process of the unsuccessful incoming call is executed (step 102). For example, if the communication terminal apparatus has been set to selectively receive a call to the other party's telephone number 89-7005 in response to the calling number information element shown in FIG. The numbers do not match. The setting of the selective reception is stored in the memory unit 7 shown in FIG.

The process for extracting the cause of the incoming call failure is executed by the incoming call failure cause identification unit 5 shown in FIG. It should be noted that the specific processing content of the cause extraction processing of the incoming failure will be described later in detail with reference to the flowchart shown in FIG.

When the process of extracting the cause of the failure of the incoming call is completed in step 102, the incoming call is rejected according to the extracted cause of the failure of the incoming call (step 10).
3). This incoming call rejection process is performed according to the sequence shown in FIG. 4 when the cause of the incoming call failure is the calling number mismatch. That is, the incoming call information including the calling number 89-7005 as the calling number information element is sent from the ISDN 1 to this communication terminal apparatus, and the communication terminal apparatus selects the call destination number 89-7005 to reject the incoming call. If the reception setting has been made, it is determined in step 101 that the incoming call cannot be disabled. In step 102, the calling number mismatch is extracted as the cause of the unsuccessful incoming call. Information is sent from this communication terminal to ISDN1.

When the incoming call process in step 103 is completed, it is next checked whether or not the incoming call failure cause informing function, which is a function according to the present invention, is selected (step 10).
4) If the function of notifying the cause of the incoming call failure is permitted, the cause of the failure of the incoming call extracted in step 102 is notified (step 105), and this processing is terminated. The cause of the failure of the incoming call is reported, for example, by displaying it on the display unit 6 shown in FIG. FIG. 5 shows a specific display example on the display unit 6 when the cause of the incoming call failure is the calling number mismatch. In this case, "call control" is displayed as the type of incoming failure, and the cause is displayed as "does not meet the selected receiving condition" and "calling number = 897005".

In this communication terminal device, if the function of notifying the cause of the incoming call failure is not selected, it is determined in step 205 that the notification of the cause of the incoming call failure is prohibited, and the process of notifying the cause of the incoming call failure in step 106 is not performed. This processing ends.

Next, a specific example of the process for extracting the cause of the incoming call failure at step 102 shown in FIG. 2 will be described with reference to the flowchart shown in FIG.

In this specific example, the communication terminal device is G
It is assumed that it can have at least one of a three facsimile function, a G4 facsimile function, and a telephone function, can set a called number, and has a selective receiving function for setting whether or not to receive a call based on a calling number.

In FIG. 6, first, it is determined whether or not the incoming message included in the received incoming information is valid (step 201). Here, if there is a sequence error, a content error, or the like in the incoming message, the cause of the incoming failure is regarded as an incoming message error (step 202), and this process ends.

If it is determined in step 201 that the incoming message is legitimate, then the unrestricted digital transmission capability of 3.1K audio, speech, and 56K / 64K, which can possibly be handled by the terminal itself, is set. It is determined whether or not it has (step 203). Here, the terminal is 3.1K audio, speech, 56K / 64K
If the terminal does not have the unrestricted digital transmission capability, the cause of the failure of the incoming call is determined as the out-of-capability transmission capability (step 20).
4) This process ends.

In step 203, the own terminal sets 3.1.
If it is determined that the terminal has unrestricted digital transmission capability of K audio, speech, and 56K / 64K, it is next determined whether or not the transmission capability requested by the other party is set in its own terminal. (Step 205). Here, if the transmission capability requested by the other party is not set in the own terminal, the cause of the failure of the incoming call is set as the non-set transmission capability (step 206), and this process ends.

In step 205, if the transmission capability requested by the other party is set in the own terminal, the G3 facsimile function, the G4 facsimile function, the telephone function Is determined (step 207). Here, if the incoming call capability is not any of the G3 facsimile function, the G4 facsimile function, and the telephone function that may be supported by the terminal itself, the cause of the failure of the incoming call is determined to be an out-of-capability function (step 208), and this processing ends.

At step 208, the G3 facsimile function, G
If it is determined that the function is the 4-facsimile function or the telephone function, it is then determined whether or not the content is included in the terminal setting function relating to the requested transmission capability (step 209). Here, if the content is not included in the own terminal setting function relating to the requested transmission capability, the cause of the failure of the incoming call is set as the non-set function (step 210), and the process is terminated.

If it is determined in step 209 that the destination ID and the destination sub-ID are included in the own terminal setting function related to the requested transmission capability, then the destination terminal ID related to the requested transmission capability and function is determined. It is determined whether or not it matches the setting ID (step 211). If the destination ID and the destination sub-ID do not match the own terminal setting ID relating to the requested transmission capability and function, the cause of the failure of the incoming call is determined to be the destination number mismatch (step 212), and this process is terminated.

In step 211, the destination ID and the destination sub-ID are the terminal setting IDs related to the requested transmission capability and function.
If it is determined to match, then the calling ID, calling sub I
It is determined whether or not D can receive a call by setting the selective reception function (step 213). If the calling ID and the calling sub ID cannot be received due to the selection receiving function setting, the cause of the incoming call failure is determined to be the calling number mismatch (step 214), and this process ends.

If it is determined in step 213 that the caller ID and the caller sub ID can be received by the setting of the selective reception function, the cause of the failure of the incoming call is determined to be other (step 21).
5) This process ends.

[0033]

As explained above, according to the present invention,
The detection means detects whether or not the incoming call is established based on the call setting information from the digital network. If the unsuccessful incoming call is detected by the detecting means, the cause of the unsuccessful incoming call is identified as the unsuccessful cause extracting means. If the notification of the cause of the call failure is selected by the selection means after the call rejection processing is executed by the call rejection processing execution means, the cause of the call failure is extracted by the call failure cause extraction means. , It is possible to analyze and report the cause of the failure of the incoming call only on the receiving terminal side, making it possible to respond appropriately and promptly when a trouble occurs on the receiving communication terminal. To play.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a communication terminal device according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the embodiment shown in FIG. 1;

FIG. 3 is a diagram showing an example of incoming information notified from an ISDN to a network control unit shown in FIG. 1;

FIG. 4 is a sequence diagram showing an operation in a case where the cause of the failure of the incoming call is a mismatch of the calling number in the embodiment shown in FIG. 1;

FIG. 5 is a diagram showing a specific example of display on the display unit when the cause of the incoming call failure is the above-mentioned calling number mismatch.

FIG. 6 is a flowchart showing a specific example of an incoming call unsuccessful cause extraction process shown in FIG. 2;

[Explanation of symbols]

 Reference Signs List 1 ISDN 2 Network control unit 3 Incoming call detecting unit 4 Incoming call unsuccessful detecting unit 5 Incoming call unsuccessful cause identifying unit 6 Display unit 7 Memory unit 8 Central processing unit (CPU) 9 Bus

Continuation of front page (56) References JP-A-1-253391 (JP, A) JP-A-3-44266 (JP, A) JP-A-2-218264 (JP, A) JP-A-2-57044 (JP) , A) JP-A-1-318347 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 11/00-11/10 H04M 1/00

Claims (1)

(57) [Claims] 1. A communication terminal device connected to a digital network and performing an incoming call operation based on call setting information from the digital network, wherein whether or not an incoming call is established based on the call setting information from the digital network is detected. Detecting means, when the incoming call is not established by the detecting means, the incoming call unsatisfied cause extracting means for extracting the incoming unsuccessful cause in which the incoming call is unsuccessful, and the incoming unsuccessful cause extracted by the incoming call unsatisfied cause extracting means. An incoming call rejection process executing unit that rejects the incoming call based on the call, a selecting unit that selects whether or not to notify the cause of the unsuccessful incoming call; and, after the incoming call rejection process is executed by the incoming call rejection executing unit, If the notification of the cause of the incoming call failure has been selected, a notifier who reports the cause of the incoming call failure extracted by the incoming call failure cause extracting means. Communication terminal apparatus characterized by comprising and.