JPH09121242A - Network communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the means for timely use environments most suitable for the user of a terminal stored in a line switchboard. SOLUTION: This equipment consists of computer terminals, which include telephone cards having a telephone terminal function, and line switchboards 1 and 2 where these terminals are stored, and line switchboards are mutually connected by plural communication lines 3 and 4. When the computer terminal to which the telephone card TC is connected to the communication line of the line switchboard, the line switchboard detects the line connection, and discrimination information for access to each line switchboard and line storage position information of the line switchboard to which the computer terminal is connected are reported to the computer terminal through the telephone card, and the position of the computer terminal on the network is recognized, and reported information are stored in the computer terminal.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network communication device, and more particularly to a terminal control and user data in a plurality of computer terminals accommodating a card (telephone card) having a telephone terminal function and a circuit switching device connecting / accommodating them. It concerns management means and methods.

In a company, in order to smoothly exchange information between distributed offices, a circuit switching device such as PBX is used to construct an in-house network.

Recently, as represented by a notebook type personal computer which has been reduced in size and weight, the performance of computer terminals has been improved and the graphical user interface (GUI) and peripheral devices have been enhanced to make information portable. , The integration of communication systems and information systems has progressed,
The number of cases where a computer terminal is directly connected to a telephone line and used is increasing.

In operating such a network,
What is required from the user side is simplification of network operation, low-cost network management, and opening of information in the network.

Further, from the viewpoint of a user who uses a highly portable terminal such as a notebook type personal computer, even if the user moves, the network can be used in the same environment and the operability is unified. Is needed.

[0005]

2. Description of the Related Art There is a system generally known in the prior art in which a plurality of circuit switching devices such as PBX are connected to construct a network as shown in FIG. , 2 are line-connected by a public network 3 or a leased line network 4 via trunks CO, TI, and telephone terminals TE1, TE2 are accommodated in each of the circuit switching devices 1, 2 via a line circuit LC. Further, the central control unit CC and the main memory MM are connected.

Such a network communication device has the following drawbacks.

(1) The circuit switching equipment is roughly divided into terminal information (extension data) relating to terminal control connected under this equipment, and network operation information (trunk data) relating to connection of public network / dedicated line network or the like. It is composed of
It is operated / managed by the administrator.

[0008] Basically, the trunk data requires an understanding of the entire network configuration, and the addition of data
Changes are not made frequently.

However, changes in extension data such as changes in extension numbers and service classes and setting of function buttons require timely changes due to the convenience of the user, but this is largely due to the convenience of the PBX administrator. The convenience of the person is often ignored.

(2) When a network composed of a circuit switching device and a plurality of circuit switching devices is used, a telephone number is used as a keyword, but these are circuit switched in advance by the PBX administrator for each circuit switching device. The physical address (accommodation position of the telephone line) of the device and the logical address (extension number) are set in association with each other.

Therefore, the telephone terminal connected to a certain telephone line uses the extension number registered by the PBX administrator.

Therefore, when the location where the terminal is used is moved, the physical line is different from the one used before.
The telephone number used is changed. Further, when the arrangement and number of telephone terminals are changed due to the change of organization or the office layout, it is necessary for the PBX administrator to change the database of the circuit switching device.

However, recent circuit switching devices include the following systems that can be used with the same number even when moving from place to place.

(A) A system such as a cordless telephone in which the terminal (slave unit) and the control device (parent unit) are made wireless so that a call can be made within the communication area of the parent unit.

(B) A system in which a circuit switching device and a computer terminal cooperate with each other to provide a value-added function using an application on the computer terminal.

However, in these systems, when a call is made from Mr. A to Mr. B, not B's telephone number but information for identifying Mr. B (ID number etc.)
By inputting from the telephone, Mr. B can call the telephone closest to the place where he is at that time. In this case, if the identification information such as the ID number is not disclosed instead of the telephone number. I won't.

(3) The circuit switching device manages the terminal status information (in-call / empty status, etc.) necessary for controlling the terminal, and the terminal user judges the status in each status, and the user The service request to be received is sent to the circuit switching device, and if the request received by the device can be executed, the service is executed, and if it cannot be executed, the fact is notified.

Therefore, the terminal user needs a wide knowledge of each service, and without it, useless operations increase.

(4) The circuit switching device receives the information related to the call control such as the source address, the destination address and the sub address from the network and performs the switching process. For calls that are received in the form of crossing over devices or calls that have been transferred multiple times, the call information (calling address, etc.) held by the circuit switching device at the time the call occurred in the network disappears, The information that can be received by the final callee is limited to the information in the circuit switch that is finally connected.

Therefore, when a plurality of callers and a plurality of circuit switching devices are used in spite of the same call, there is a difference in information level notified between the person who first receives the call and the person who finally receives the call. Will end up.

Therefore, the present invention provides a network communication device comprising a plurality of circuit switching devices for accommodating a plurality of computer terminals having a telephone terminal function,
(1) Providing means for timely creating an optimal usage environment for users of terminals accommodated in the circuit switching equipment, (2) Utilization for users of terminals accommodated in the circuit switching equipment The purpose is to improve efficiency (operability) and to provide a means for obtaining effective information when using the network, or (3) to realize the simplification of operation and management of the constructed network. I am trying.

[0022]

In order to achieve the above object, a network communication apparatus according to the present invention is a computer terminal including a telephone card having a telephone terminal function, and a circuit switching apparatus accommodating a plurality of the computer terminals. And the circuit switching devices are connected to each other through a plurality of communication lines.

When the computer terminal to which the telephone card is connected is connected to the communication line of the line switching device,
The circuit switching device detects the line connection, and the identification information for accessing each circuit switching device and the line accommodation position information of the circuit switching device to which the computer terminal is connected are passed through the telephone card to the computer. The terminal is notified so that the position of the computer terminal on the network is recognized and the notified information is stored in the computer terminal.

Further, in the present invention, the above-mentioned telephone card has a function of detecting that information notified from the circuit switching device cannot be stored in the computer terminal due to a factor on the computer terminal side, and cannot store the information. When it is detected that the notified information can be recorded in the telephone card and can be saved in the computer terminal, the notified information can be notified to the computer terminal.

Further, in the present invention, the computer terminal described above creates and saves user data that needs to be managed on the circuit switching device, and sets the created user data in the telephone card. , And can have a function of registering with the circuit switching device.

Further, in the present invention, the circuit switching device has a user information notification table, and when the user data is registered in the circuit switching device, each computer terminal is in accordance with the user information notification table. And a function of notifying the user data required by each circuit switching device.

Further, in the present invention, when the communication line is released from the telephone card and a certain period of time elapses, the user data of the computer terminal is automatically deleted from the user management table in the circuit switching device. You can

Further, in the present invention, when the user data in the user management table managed in the circuit switching device is changed, each computer terminal and each line is changed according to the user information notification table. The switching device can have a function of notifying user data required.

Further, in the present invention, when an incoming call is made to a computer terminal accommodating the telephone card connected to the circuit switching device, a call is generated in a network composed of the plurality of circuit switching devices, It is possible to notify the computer terminal of incoming call history information until an incoming call arrives at the computer terminal.

Further, in the present invention, when making a telephone call with a computer terminal accommodating the telephone card connected to the circuit switching apparatus, service information that can be used according to the state of the communication line is provided to the telephone card. It is possible to notify the computer terminal via the route.

[0031]

FIG. 1 shows the configuration of an embodiment of a network communication device according to the present invention. The circuit switching devices 1 and 2 in the figure are composed of a public network 3 and a private line network 4. It is connected. A computer terminal accommodating a telephone card TC for enabling a telephone terminal function is connected to the line switching device 1, and each computer terminal is used by Mr. A and Mr. B. Is a computer terminal having the same function,
Are connected and used by Mr. C and Mr. D respectively.

The line switching devices 1 and 2 include a line circuit LC for transmitting power supply and control information to the telephone card TC, a public network trunk CO and a private line trunk TI connected to the public network 3 and the private line network 4, respectively. And have.

The circuit switching devices 1 and 2 further include a central control unit CC for controlling the entire device, data necessary for the circuit switching device 1 to operate (communication line operation class (outgoing class, service use class, etc.), and trunk data. Etc. are stored in the main memory MM, a network control unit NWC that controls the establishment of a communication path according to a line connection request, whether or not a communication line is connected to a telephone card TC, and identification information of a line switching device. Manages the line control unit LCC, user information notification table, and user management table (including checking the validity of registered user data)
However, it is configured by the user information control unit UIC that transmits information according to the user information notification table when the management information is changed.

FIG. 2 shows a configuration common to the computer terminals shown in FIG. 1. The processor unit 10 is composed of a CPU 10a and a main memory (memory) 10b, the processor unit 10 and a bus B. An input / output device 11 connected via a disk, a disk 12 as an auxiliary storage device, and a telephone card TC having a telephone terminal function.
It is composed of

Further, the telephone card TC includes a bus interface 13 connected to the bus B, a computer terminal power receiving unit 14 and a computer terminal state monitoring unit 15 connected to the bus B via the bus interface 13.
A communication line interface section 16 connected to the line circuit LC in the circuit switching device, a computer terminal power supply receiving section 14 and a power supply detecting section 17 connected to the interface section 16, a computer terminal state monitoring section 15 and a power supply detecting section 17. The control unit 18 connected to the control unit 18, the telephone card program unit 19 and the memory unit 2 connected to the control unit 18.
0, and a call section 21 for connecting the control section 18 to a speaker, a microphone, or the like.

Of these, the computer terminal power receiving section 1
Reference numeral 4 denotes a portion that receives electric power supplied from the computer terminal, and the computer terminal state monitoring unit 15 is for monitoring whether or not the computer terminal is powered on and whether or not the computer terminal is in an operable state. The interface section 16 operates by being supplied with power from the line circuit LC and communicates with the line circuit LC using the information channel / control channel.

Further, the power supply detection unit 17 detects power supply from the computer terminal and the circuit switching device and switches to an available power supply mode, and the control unit 18 controls the computer terminal via the bus / communication line interface unit. It controls the telephone card TC by communicating with the above TC driver and line circuit LC, the telephone card program section 19 stores a program necessary for controlling the telephone card TC, and the memory section 20 exchanges a line. Device and TC
The information notified from the driver is stored, and the call unit 21 is connected to a headset, a handset (telephone), or the like to control the call.

The hardware / software configuration of the computer terminal is schematically shown in FIG. 3. The computer terminal OS, application software, a telephone card TC, and an application / driver interface for using the telephone card TC and their interfaces. It is composed of a control function library group and driver software (driver function group) for controlling the telephone card TC.

To summarize the functions of this telephone card TC,
When the information from the circuit switching device cannot be saved because the computer terminal is not powered on, the information is stored in the memory unit 20 in the telephone card, and it is detected that the computer terminal is ready to receive the information. Then, the information is notified to the computer terminal.

The telephone card TC receives power from the computer terminal when the computer terminal is powered on, and receives power from the circuit switching device in other states. Further, whether or not the computer terminal can receive / store the information from the circuit switching device is determined by the computer terminal state monitoring unit 15 and the power feeding detection unit 17.

FIG. 4 shows an embodiment of the line circuit LC, especially in the circuit switching device 1 connected to the computer terminal, in which the line circuit LC comprises the telephone card TC and the information channel / in the computer terminal.
A communication line interface unit 31 for performing communication using a control channel, a power supply unit 32 for supplying power to the telephone card TC, a line control unit LCC and a central control unit CC
Whether the telephone card TC is connected to the control unit 33 that communicates with the control unit 33 for controlling the telephone card TC via the interface unit 31, the program unit 34 that stores the program necessary to control the line circuit LC, and the telephone card TC. A line status monitoring unit 35 for detecting whether or not the status of the communication line accommodated in the telephone card TC (vacant, busy, incoming call, etc.), a line control unit LCC, and a central control unit CC And a highway (HW) interface unit 36 for communicating with.

The connection relationship between the computer terminal and the circuit switching apparatus 1 shown in FIG. 4 is exactly the same as the relationship between the computer terminal and the circuit switching apparatus 1 or the computer terminal or the circuit switching apparatus 2.

FIG. 5 shows a signal format between the computer terminal and the circuit switching equipment. This signal format is used for storing the frame bit F, the information channel for storing the call data, the data type and the data. It is composed of a control channel and a balance bit b, and the data type indicates connection information, user information, incoming call history information, or the like.

FIG. 6 shows a signal format between the circuit switching devices. This signal format has a frame bit F, a destination address, a source address and a data length L.
And a data part and a pad P that store data type and data
And a frame check sequence FCS,
The data type indicates user information, incoming call history information, and the like.

When the user data is notified from the circuit switching device 1 in FIG. 1 to the circuit switching device 2 using the signal format shown in FIG. 6, the access destination is another circuit switching device, After the communication path is formed between the trunks of the exchanges, the user information control unit UIC of each line exchange is operated in the same manner as the telephone card TC.

When these circuit switching devices 1-2 are connected by an analog public line, data communication is performed in the signal format of FIG. 6 by modem modulation after the communication path is established by the telephone call procedure. When connecting with an analog control line, after establishing a communication path by a telephone call procedure, the user information control unit UIC is accessed by the logical number (corresponding to the extension number) of the user information control unit UIC and shown in FIG. Data communication will be performed in the signal format.

Further, when notifying the incoming call history information to the computer terminal, the address information in the signal format shown in FIG. 6 is set in the control channel in the signal format shown in FIG. 5 and transmitted to the computer terminal.

The first address, the second address, ... Of the destination addresses are set in the order in which the corresponding call arrives.

FIG. 7 shows an example of the user information notification table managed by the user information control unit UIC in the circuit switching device 1, and FIG. 8 also shows an example of the user information notification table. An example of a managed user management table is shown.

Further, in FIG. 10, when Mr. B is selected from the address window and a call is made, Mr. B is busy and a service window showing available services in that state is displayed. The example of the screen of is shown.

According to the above embodiment, the telephone card T
A sequence for connecting the communication line to C is shown in FIG. 11 and FIG. 12 combined with FIG. 11, and a sequence for releasing the communication line from the telephone card TC is shown in FIG.
14 and FIG. 14 combined with FIG. 13, the operation of the network communication device according to the present invention will be described with reference to these sequences.

In the examples of FIGS. 11 and 12, after Mr. A connects to the accommodation position 001 of the circuit switching device 1 and registers the user data, the line in the user information notification table in the circuit switching device 1 is connected. The sequence in which the information of Mr. A is notified to the switching device 2 and the computer terminal 2 of Mr. B housed in the circuit switching device 1 is shown. Also, within the dotted line, when the communication line is connected to Mr. A's telephone card, the computer terminal 1
An example in which the information received from the circuit switching device 1 cannot be saved in the computer terminal 1 due to the power not being turned on is shown.

The examples of FIGS. 13 and 14 show a sequence for automatically deleting Mr. A's data when the communication line is disconnected from the telephone card of the computer terminal 1 used by Mr. A. The notification condition of the user information notification table at this time shows the same case as the sequence of FIGS. 11 and 12.

The sequences shown in FIGS. 11 to 14 are more specifically shown in FIGS. 15 to 18.
Among these, FIG. 15 shows a control flow of the circuit switching device when the communication line is connected to or released from the telephone card, and FIG. 16 is a control flow of the computer terminal (No. 1).
17 shows a control flow of the computer terminal (No. 2), and FIG. 18 shows a control flow of the circuit switching device when user data is registered or changed on the computer terminal side. It is a thing. Then, in the flowcharts shown in FIGS. 11 to 18, the same or corresponding steps are designated by the same reference numerals.

First, in FIGS. 11 and 15, the user information control unit UIC in the circuit switching device 1 registers the user information notification table shown in FIG. 7 (step S
1) Among them, the notification device is the circuit switching device 2,
Mr. B is set as a user (step S2).

The line operation class and network information (trunk data) are registered in the main memory MM (step S3).

In such a state, the circuit switching device 1
Now, assuming that the line XX is not connected to the line XX (step S100), the line state monitor 35 in the line circuit LC monitors the state of the telephone card TC (step S100).
4).

Then, it is judged whether or not the state held by the line state monitoring unit 35 matches (step S10).
1) If there is a mismatch, it is determined whether the line is connected to or released from the telephone card TC (step S102), and if it is released, the release monitoring timer is started in the line state monitoring unit 35 (step S64), When the timer times out (step S65), the user table of line XX is deleted (step S6).
6).

When the timer has not timed out in step S65, it is determined whether or not the line is connected to TC (step S103). When it is found that the line is connected to TC, the interface unit 31 confirms the connection to line XX. The request is transmitted (step S6).

As a result, the line circuit LC is connected to the telephone card T.
It is determined whether or not the connection confirmation notification from C has been received (step S7), and if not received, the line XX is in an error state (step S104), and the process returns to step S100, but the connection confirmation notification is received. If it is found that the line circuit LC has been connected, the control unit 33 of the line circuit LC makes a connection request to the line control unit LCC (step S8), and the line control unit LCC which has received the connection request obtains the connection information of the line XX to the central control unit CC. Make a request (step S9),
The central control unit CC and the main memory MM are line control units L
Send connection information of line XX to CC (step S1
0), the line control unit LCC transmits the received connection information to the line circuit LC (step S11), and the control unit 33 of the received line circuit LC transmits the connection information to the telephone card TC (step S12).

After transmitting the connection information in this way, the circuit switching device 1 determines whether or not the transmission retry is out (step S105), and only when it is not out, the connection information from the telephone card TC is obtained. Is received (step S15), and when this notification is received, the line state monitoring unit 35 determines that the line XX is connected (step S106). .

Further, as shown by the dotted line in FIG. 11, when the communication line is connected to Mr. A's telephone card, the computer terminal 1
If the information received from the circuit switching device 1 cannot be stored in the computer terminal 1 because the power has not been turned on, the terminal operation is not detected (step S19), and the telephone card T
C saves the connection information (step S20), transmits the connection information (step S22) at the stage when the operation of the terminal is detected (step S21), and saves it in the TC driver (step S23).

In this way, the communication line is connected to the telephone card TC, but in the computer terminal, the operations from step S16 to step S23 shown in FIG. 11 are performed, and the details are shown in FIGS. 16 and 17. It is shown.

That is, first, assuming that the telephone card TC is in the idle state in the computer terminal (step S201), the power feeding detection unit 17 of the telephone card TC determines whether or not there is power feeding from the communication line interface unit 16. (Step S202), if not, it is determined that the communication line is not connected (Step S203),
Returning to step S201, when it is found that power is being supplied, it is determined that the power is connected to the communication line (step S5).

Then, steps S6 to S15 are executed as described with reference to FIGS.

After transmitting the notification as to whether or not the connection information is received to the line circuit LC in step S15, it is determined whether or not the notification data to the TC driver is present in the memory unit 20 of the telephone card TC (step S204), and the notification is sent. If there is no data, the process returns to step S201, but if there is notification data, a computer terminal (driver)
Whether or not is in the operating state (step S20
6).

This determination is shown in detail in FIG. 17. First, the computer terminal status monitoring section 15 of the telephone card TC monitors the status of the computer terminal (step S301), and whether the computer terminal power receiving section 14 has received power. It is determined whether or not (step S302), when there is no power supply, it is determined that the computer terminal is not powered on (step S303), and the process returns to step S301, but when it is found that power is supplied, TC It is determined whether or not the driver has been activated (step S304), and when it is determined that the driver has not been activated, it is determined that the computer terminal is powered on but is not yet activated (step S30).
5) The process returns to step S301, but when it is found that the TC driver has been activated, it is determined that the computer terminal is in operation (step S16).

Thus, when it is found that the computer terminal is in the operating state, the telephone card TC notifies the driver that there is transmission data (step S2).
2) It is determined whether or not the driver is in the reception ready state (step S207). If the driver is not in the reception ready state, step S20 is performed until a ready notification time-out occurs.
7 is repeated (step S208), and when it is found that the driver is in the reception ready state, the save data is transmitted to the driver (step S209), whether or not the save of the driver is completed (step S210), and the transmission Whether the retry is out (step S2)
After 11), the stored data in the memory unit 20 is cleared (step S212).

As described above, when the user data is registered or changed on the computer terminal side after the telephone card TC is connected to the communication line, the processes shown in FIGS. 12 and 18 are executed. It

That is, T in the computer terminal
The C driver (Mr. A) activates the user data creation screen as shown in FIG. 10 (step S24).

Then, such a creation screen is displayed on the telephone card T.
Save it in the memory unit 20 in C (step S2
5 to S27).

Then, the line circuit LC in the circuit switching device 1 requests the line control unit LCC to register the user data (steps S28 and S29), and the line control unit LCC which has received the request requests the user information control unit UIC. The user is requested to register the user data (step S30).

As a result, the user data is notified from the user information control unit UIC to the telephone card TC via the line control unit LCC and the line circuit LC (step S40).
2).

Then, the telephone card TC transfers the user data to the user information control unit UIC (step S3).
1).

In the user information control unit UIC of the circuit switching device 1, it is judged whether or not the user table is changed (step S403), and when it is found that the user table is changed, the user is notified. The table is referred to (step S34).

Then, the user information control unit UIC confirms that there is a notification destination of the user data (step S
404), the notification destination of the user data is accessed (steps S35 to S40).

As a result, the user information control unit UIC responds to the telephone card TC of Mr. B of the computer terminal with A
The user data, which is the registration information of Mr., is transferred and saved (steps S43 and S44), and the user data is also transferred to the user information control unit UIC in the circuit switching device 2 (step S41). .

As described above, when the access destination is another circuit switching device, after forming a communication path between the trunks CO and TI of the circuit switching device, the user information control unit UIC of each circuit switching device is set to the telephone card. It will be performed in the same manner as TC.

As a result, the user information control unit UIC of the circuit switching device 2 also writes the user table (steps S42, S45, S46) and notifies the circuit switching device 1 of the completion of receiving the user data. This is performed for the user information control unit UIC (step S47).

FIGS. 13 and 14 show the sequence when releasing the communication line from the telephone card. Steps S1 to 18 are executed in the same manner as in FIG. 11, and thereafter,
When the power feeding detection unit 17 of the telephone card TC in the computer terminal detects that there is no power feeding from the communication line interface unit 16, the communication line is released (step S61).

Since the release of this communication line is also detected by the line circuit LC in the line switching apparatus 1 (step S62), the line control unit LCC is notified of the release of this line.
(Step S63), and the line control unit LCC which received it detects that a certain time has elapsed by the timer (steps S64, S65), and then the user information control unit UIC displays the user table. The deletion is requested (step S66), and the user information control unit UIC is correspondingly requested.
Will delete Mr. A's information (step S6)
7).

After the information of Mr. A is deleted in this way,
The user information control unit UIC of the circuit switching device 1 refers to the user information notification table shown in FIG. 7 (step S6).
8), a connection request is made to the user information control unit UIC of the circuit switching device 2 (steps S69 to S74).

Then, the user information control unit UIC of the circuit switching device 1 transmits the deletion information of Mr. A to the user information control unit UIC of the circuit switching device 2 (step S75).
In response to this, the user information control unit UIC in the circuit switching device 2 deletes the information of Mr. A in the user table (step S76).

Further, the user information control unit UIC of the circuit switching device 1 sends a message to the effect that the information of Mr. A in the memory unit 20 of the telephone card in the computer terminal 1 is to be deleted (step S77).

The user information control unit UIC in the circuit switching apparatus 2 is the user information control unit U in the circuit switching apparatus 1.
A notification of completion is sent to the IC (step S79).

[0086]

As described above, according to the network communication device of the present invention, when the terminal connected to the circuit switching device is used, it is necessary when the user arbitrarily makes a telephone call with a telephone number or the like. Since information can be registered and the registered data is automatically deleted by the circuit switching device, it is not necessary for the user to be aware and the resources of the circuit switching device can be effectively used.

Further, since it is possible to transmit information necessary for making a telephone call to a plurality of other circuit switching devices and user terminals in the network, if necessary, each user terminal can be transmitted using the information. It is also possible to create an address book in the network inside.

Even when such information is received by the user terminal, the information can be received regardless of the reception enable / disable state of the user terminal, and the information transmission efficiency in the network can be improved.

As a result, it becomes possible to reduce the burden on the circuit switching device and the administrator of the network and to improve the efficiency of network operation.

From the viewpoint of operating the terminal, it becomes possible to handle the operation without being aware of the operation procedure of the terminal.
Since information about each call is always transmitted to the called party (answerer), it is possible to receive an even service regardless of where it is located on the network, and it is possible to effectively use the application on the terminal that utilizes this information. Becomes

[Brief description of the drawings]

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

FIG. 2 is a functional block diagram of a computer terminal used in the network communication device according to the present invention.

FIG. 3 is a schematic block diagram of a hardware / software configuration of a computer terminal used in the network communication device according to the present invention.

FIG. 4 is a functional block diagram of a line circuit (LC) in the circuit switching device used in the network communication device according to the present invention.

FIG. 5 is a signal format diagram between a computer terminal and a circuit switching device used in the network communication device according to the present invention.

FIG. 6 is a signal format diagram between circuit switching devices used in the network communication device according to the present invention.

FIG. 7 is a diagram showing an example of a user information notification table of a circuit switching device used in the network communication device according to the present invention.

FIG. 8 is a diagram showing an example of a user management table of a circuit switching device used in the network communication device according to the present invention.

FIG. 9 is a diagram showing an example of a history of calls received by a user (Mr. A) of the circuit switching device used in the network communication device according to the present invention.

FIG. 10 is a diagram showing an example of a screen of a computer terminal when Mr. A calls Mr. B who is talking.

FIG. 11 is a sequence diagram (No. 1) when a communication line is connected to a telephone card (TC) in the network communication device according to the present invention.

FIG. 12 is a sequence diagram (No. 2) when a communication line is connected to a telephone card (TC) in the network communication device according to the present invention.

FIG. 13 is a sequence diagram (No. 1) when the communication line is released from the telephone card (TC) in the network communication device according to the present invention.

FIG. 14 is a sequence diagram (No. 2) when the communication line is released from the telephone card (TC) in the network communication device according to the present invention.

FIG. 15 is a control flowchart of the circuit switching device when connecting / releasing a communication line to a telephone card (TC) in the network communication device according to the present invention.

FIG. 16 is a control flowchart diagram (1) of a computer terminal accommodating a telephone card (TC) in the network communication device according to the present invention.

FIG. 17 is a control flowchart (No. 2) of the computer terminal accommodating the telephone card (TC) in the network communication device according to the present invention.

FIG. 18 is a control flowchart of the circuit switching device when user data is registered / changed on the computer terminal side in the network communication device according to the present invention.

FIG. 19 is a diagram showing a configuration example of a conventional general network communication device.

[Explanation of symbols]

 1, 2 circuit switching device 3 public network 4 leased line network to computer terminal TC telephone card LC Lean circuit CC central control unit MM main memory LCC line control unit UIC user information control unit 14 computer power receiving unit 15 computer status monitoring unit 16 Power Supply Detection Section 20 Memory Section In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (8)

[Claims] 1. A network communication comprising a computer terminal including a telephone card having a telephone terminal function and a circuit switching device accommodating a plurality of said computer terminals, said circuit switching devices being connected to each other by a plurality of communication lines. Which is a device, and when the computer terminal to which the telephone card is connected is connected to the communication line of the line switching device, the line switching device detects the line connection and identification information for accessing each line switching device and The line accommodation position information of the line switching device to which the computer terminal is connected is notified to the computer terminal via the telephone card so that the position of the computer terminal on the network is recognized and the notified information is sent. A network communication device characterized by storing in the computer terminal. 2. The telephone card according to claim 1, wherein the telephone card has a function of detecting that information notified from the circuit switching device cannot be stored in the computer terminal due to a factor on the computer terminal side. When detecting that the notified information is recorded in the telephone card, and when it is detected that the information can be stored in the computer terminal, the notified information is notified to the computer terminal. . 3. The computer terminal according to claim 1, wherein the computer terminal creates and saves user data that needs to be managed on the circuit switching device, and sets the created user data in the telephone card. After that, the network communication device having a function of registering in the circuit switching device. 4. The circuit switching device according to claim 3, having a user information notification table, and when the user data is registered in the circuit switching device, each computer terminal follows the user information notification table. And a network communication device having a function of notifying the user data required by each circuit switching device. 5. The user data of the computer terminal is automatically deleted from a user management table in the circuit switching device when a communication line is released from the telephone card and a certain period of time elapses. A network communication device characterized by: 6. The computer terminal according to claim 4 or 5, when the user data in the user management table managed in the circuit switching device is changed, according to the user information notification table. A network communication device having a function of notifying user data required by each circuit switching device. 7. A network comprising a plurality of circuit switching devices according to claim 1, when a computer terminal accommodating the telephone card connected to the circuit switching device receives an incoming call. A network communication device characterized by notifying the computer terminal of incoming call history information until a call is made and an incoming call is received at the computer terminal. 8. The service according to any one of claims 1 to 7, which is available according to the state of the communication line when making a call using a computer terminal containing the telephone card connected to the line switching device. A network communication device characterized by notifying information to the computer terminal via the telephone card.