JPH08115285A - Information communication system - Google Patents

Abstract

PURPOSE: To prevent the down of LAN to improve the applicability and the operability of LAN by providing a communication management server terminal with a terminal management list of the address, the group identifier, the operation condition, etc., and turning on the power source at a client terminal by a specific telegram from the communication management server terminal and indicating mutual power-on between terminals to prevent the delay of power-off at the communication management server terminal. CONSTITUTION: A communication management server terminal 21 is provided with a terminal management list 28 of the address, the group identifier, the operation condition, etc., and client terminals 23 to 25 turn on the power sources by the specific telegram from the communication management server terminal 21. Therefore, power-on is indicated not only to the communication management server terminal 21 from client terminals 23 to 25 but also to client terminals 23 to 25 from the communication management server terminal 21. Thus, the applicability and the operability of LAN26 are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a local information communication network (LA).
N) relates to an information communication system having a communication management server terminal and a client terminal connected to each other. In remote power control of an information communication system having a communication management server terminal and a client terminal connected to a LAN, the client terminal issues an instruction to the communication management server terminal only in one direction when the power is turned on, and the communication management is performed when the power is turned off. A list of operating terminals is provided in the server terminal so that the power-off processing of the communication management server terminal is interrupted while the client terminal is operating.

However, since a plurality of server systems have recently appeared in which communication, files, printers, and the like are managed by separate terminals, it is necessary to issue a power-on instruction to each of a plurality of terminals. It is desired to improve the function of.

[0003]

2. Description of the Related Art As a conventional information communication system, there is one shown in FIG. 7, for example. In FIG. 7, 1 is a communication management server terminal, and the communication management server terminal 1 is LA
A plurality of client terminals 3, 4, and 5 are mutually connected by N2.

FIG. 8 is a block diagram of the communication management server device 2. In FIG. 8, reference numeral 6 denotes a RAM, and the RAM 6 stores an operating terminal list 7 indicating the operating statuses of the client terminals 3, 4, and 5. 8 is a ROM, R
A control program is stored in the OM 8. Reference numeral 9 denotes a display unit, on which the operating terminal list 7 and the like are displayed. An operation unit 10 inputs necessary information from the operation unit 10.

Reference numeral 11 is a power-on receiver, and the power-on receiver 11 receives power-on instructions from the client terminals 3, 4, and 5. When the power-on receiving unit 11 receives the power-on instruction, the power-on unit 12 turns on the power supply unit 13. When the power is turned on, the client terminals 3, 4, and 5 give instructions to the communication management server terminal 1 in only one direction.

Reference numeral 14 is a power-off receiving unit, and the power-off receiving unit 14 receives a power-off notification from the client terminals 3, 4, and 5. When the power-off receiving unit 14 receives the power-off, the power-off unit 15 turns off the power supply unit 13. When the power is turned off, the communication management server terminal 1 refers to the operating terminal list 7 and refers to the client terminals 3, 4, 5
The power off process was interrupted during the operation of.

Reference numeral 16 denotes an updating unit. The updating unit 16 updates the operating terminal list 7 when the power-on receiving unit 11 receives a power-on instruction or the power-off receiving unit 14 receives power-off. In the operating terminal list 7, as shown in FIG. 9, the client terminals 3, 4, 5 and the client terminals 3,
The operating statuses corresponding to 4 and 5 are shown. The flag "1" in the operating status indicates that the power is on, and the flag "0" indicates that the power is off.

The input / output interface section 17 controls input / output, and the main control section 18 controls each section. Next, FIG. 10 is a block diagram of the client terminals 3, 4, and 5. In FIG. 10, 19 is a power-on unit, and the power-on unit 19 turns on the power supply unit 20. When the power is turned on by the power-on unit 19, the power-on transmission unit 21 instructs the communication management server terminal 1 to turn on the power.

A power-on instruction is issued by the client terminal 3,
It is performed in only one direction from 4, 5 to the communication management server terminal 1. Reference numeral 21 is a power supply disconnecting unit, and the power supply disconnecting unit 21 disconnects the power supply of the power supply unit 20. When the power-off unit 21 turns off the power, the power-off transmission unit 22 notifies the communication management server terminal 1 of the power-off. The client terminals 3, 4, 5 are provided with a RAM 23, a ROM 24, a display unit 25, an operation unit 26, an input / output interface unit 27, and a main control unit 28.

[0010]

However, in such a conventional information communication system, when the power is turned on, only one direction can be issued from the client terminal to the communication management server terminal, and the power is turned off. Since the communication management server terminal had only the function of interrupting the power-off processing of the communication management server terminal while the client terminal was operating, it was not possible to issue a power-on instruction from the communication management server terminal to the client terminal or from the client terminal to the client terminal. Also, recently, a multiple server system that manages communication, files, printers, etc. on separate terminals has appeared,
It became necessary to issue a power-on instruction to multiple terminals, but this could not be dealt with.

Further, when the power is turned off, the list update message is transmitted to the communication management server terminal in the power-off process of the client terminal. Therefore, the terminal which cannot respond due to a failure or the like cannot transmit the message and the list is not updated. , There was a problem that the power supply of the communication management server terminal was never cut off. Furthermore, when an abnormality occurs in the communication management server terminal during operation and communication becomes impossible, there is a problem that the network cannot be managed and communication of the entire network cannot be performed.

The present invention has been made in view of the above-mentioned problems of the prior art, and provides instructions for mutual power-on between terminals to prevent a delay in power-off of the communication management server terminal, and The purpose is to improve the operability and operability of the LAN by preventing downtime.

[0013]

FIG. 1 is a diagram illustrating the principle of the present invention. As shown in FIG. 1 (A), the present invention is an information communication system having a communication management server terminal 21 and client terminals 23 to 25, which are mutually connected by a local information communication network 26, in the communication management server terminal 21. In addition, a terminal management list 28 of addresses, group identifiers, operating statuses, etc. is provided, and the client terminals 23 to 25 are turned on by a specific telegram from the communication management server terminal 21.

As shown in FIG. 1B, the present invention provides an information communication system having a communication management server terminal 21 and client terminals 23 to 25 which are connected to each other by a local information communication network 26. All terminals 21-25
In addition, a terminal management list 28 of addresses, group identifiers, operating statuses, etc. is provided, and each of the terminals 21 to 25 is turned on by a specific message.

Further, in the present invention, the client terminals 23 to 25 are replaced by other client terminals 23 to 25.
When the client management terminals 23 to 25 transmit to the communication management server terminal 21 the corresponding addresses or group identifiers of the terminals to be powered on, the communication management server terminal 21 is based on the terminal management list 28. A power-on instruction means for outputting a power-on instruction to the corresponding client terminals 23 to 25 is provided.

The terminal management list 28 used in the present invention is also provided.
Each of the terminals 21 to 25 provided with means has a power-on instruction means for outputting a power-on instruction to a plurality of terminals 21 to 25 at the same time by setting the corresponding address or group identifier of the terminal to be powered on in the telegram. I chose In addition, the terminal 2 provided with the terminal management list 28 used in the present invention
1 to 25, when receiving the message of the status notification when the client terminals 23 to 25 are powered off, the terminal management list 2
8 has an updating means for updating 8.

The communication management server terminal 21 used in the present invention has a power-off instruction means for requesting a status notification and outputting a power-off instruction to an inactive terminal when the communication management server terminal 21 is powered off. I had it. Further, the communication management server terminal 21 used in the present invention, when the power supply of the communication management server terminal 21 is turned off, requests a status notification to another terminal and displays an error for a non-responding terminal, and terminal management. The updating means for updating the list is provided.

Further, the communication management server terminal 21 used in the present invention is a client terminal 23 having a terminal management list 28 when the communication management server terminal 21 becomes unable to communicate.
Communication management sub-server terminal 22 determined in advance from
The system has a transfer processing means for transferring the management to.

[0019]

According to the information communication system of the present invention having such a configuration, the communication management server terminal 21 is provided with an address,
Since the terminal management list 28 such as the group identifier and the operating status is provided and the client terminals 23 to 25 are turned on by the specific telegram from the communication management server terminal 21, the client terminals 23 to 25 are connected to the communication management server terminal 21. The communication management server terminal 21 can instruct the client terminals 23 to 25 to turn on the power.

When the other client terminals 23 to 25 are powered on from the client terminals 23 to 25,
The client terminals 23 to 25 are the communication management server terminals 21.
After transmitting the corresponding address or group identifier of the terminal to be powered on to the communication management server terminal 21, the communication management server terminal 21 refers to the terminal management list 28 and then the corresponding client terminals 23-2.
Since the power-on instruction for 5 is output, the client terminals 23-25 to the client terminals 23-
An instruction to turn on the power can also be issued to 25.

Further, all terminals 21 to 25 are provided with a terminal management list 28 of addresses, group identifiers, operating statuses, etc., and each of the terminals 21 to 25 is powered on by a specific telegram. The power-on instruction can be issued from 21 to the client terminals 23 to 25, and from the client terminals 23 to 25 to the client terminals 23 to 25.

The terminal 2 provided with the terminal management list 28
1 to 25 output the power-on instruction to a plurality of terminals 21 to 25 at the same time by setting the corresponding address or group identifier of the terminal to which power is to be turned on in the telegram, so that recent communication, files, printers, etc. A multi-server system that manages multiple terminals using different terminals has also appeared, and it has become necessary to issue power-on instructions to multiple terminals.
This can also be accommodated.

The terminal 2 provided with the terminal management list 28
1 to 25, when receiving the message of the status notification when the client terminals 23 to 25 are powered off, the terminal management list 2
Since 8 is updated, the current status of the client terminals 23 to 25 can be grasped. Further, since the communication management server terminal 21 requests the status notification and outputs the power-off instruction to the non-operational terminal when the communication management server terminal 21 is powered off, the person in charge does not turn off the power. Even when the user returns, the power can be surely cut off by the instruction to cut off the power.

Further, when the communication management server terminal 21 is powered off, the communication management server terminal 21 requests a status notification from another terminal, displays an error message on a non-responsive terminal, and displays a terminal management list. Since it has been updated, it is possible to notify the non-responsive terminal and update it when it is judged that a failure has occurred, so that the communication management server terminal can never be powered off forever .

Further, when the communication management server terminal 21 becomes incommunicable, the communication management server terminal 21 changes to a predetermined communication management sub-server terminal 22 from the client terminals 23 to 25 having the terminal management list 28. Since the management is transferred, if all terminals 21 to 25 have the terminal management list 28, the communication management server terminal 21
Even if communication becomes impossible, it is possible to prevent the network from going down.

From the above, according to the present invention, the operability and operability of the LAN can be improved.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 6 are views showing an embodiment of the present invention.
FIG. 2 is an overall configuration diagram showing an embodiment of the present invention. Figure 2
In the figure, 21 is a communication management server terminal, 22 is a communication management sub-server terminal, and 23, 24, 25 are client terminals, and these terminals 21, 22, 23, 24, 25 are mutually connected by a LAN 26.

The communication management sub-server terminal 22 is predetermined among the client terminals, and the management is transferred when the communication management server terminal 21 becomes unable to communicate. The communication management sub-server terminal 22 is predetermined when all terminals are provided with a terminal management list, which will be described later. When the terminal management list is provided only for the communication management server terminal 21, the communication management sub-server terminal 22 is not provided.

Next, FIG. 3 shows the communication management server terminal 21.
It is a block diagram of. In FIG. 3, 27 is a RAM, and a terminal management list 28 is stored in the RAM 27. The communication management server terminal 21 refers to this terminal management list 28 and performs remote power control.

In the terminal management list, as shown in FIG.
A unique address is provided for each terminal. The group identifier is an identifier assigned to each group by dividing a plurality of terminals into groups. The operating status indicates that the terminal is currently powered on when the flag is "1" and the power is off when the flag is "0". Show.

Further, the RAM 27 stores addresses 29 of its own and other terminals and group identifiers 30 of its own and other terminals. The own address 29 and the own group identifier 30 are the client terminals 23, 2
The comparison unit 31 compares the address or the group identifier transmitted from the communication device 4 or 25. That is, the instruction receiving unit 32 receives the power-on instruction message from the client terminals 23, 24, 25 and compares the address or group identifier set for itself with the own address or group identifier stored in the RAM 27. Compare in part 31,
When they match, the power supply unit 33 turns on the power supply unit 34.

Reference numeral 35 is a ROM, and a control program is stored in the ROM 35. 36 is a display unit,
The terminal management list 28, an error display, etc. are displayed on the display unit 36. An operation unit 37 is used to input necessary information from the operation unit 37. Reference numeral 38 is a power-on instruction unit as a power-on instruction unit, and the power-on instruction unit 38 is a client terminal 23, 24, or 25 whose power is to be turned on in a message.
By setting the corresponding address or address identifier of, the plurality of client terminals 23, 24, 25 are instructed to power on at the same time.

Further, from the client terminals 23, 24 and 25 which do not have the terminal management list 28, the terminal management list 28 is displayed.
When the other client terminals 23, 24, 25 that do not have power are turned on, the corresponding address of the client terminal 23, 24, 25 which is desired to turn on the communication management server terminal 21 or the address identifier is transmitted, and communication is performed. The management server terminal 21 causes the power-on instruction unit 38 to apply the corresponding client terminals 23, 24, based on the terminal management list 28.
The power-on instruction is issued to 25.

When the communication management server terminal 21 is powered off, the status notification request unit 39 of the communication management server terminal 21
A status notification is requested to the client terminals 23, 24, 25, and the power supply unit 34 by the power supply cutoff unit 40 interrupts the power supply cutoff while the client terminals 23, 24, 25 are in operation.
If there is an inactive terminal, the person in charge may return without turning off the power, so the power-off instruction unit 41 issues an instruction to turn off the power.

When there is a non-responding terminal, an error message is displayed on the display unit 36, and the updating unit 42 serving as updating means.
Then, the terminal list 28 is updated, and the power supply disconnecting unit 40 powers off the power supply unit 34. When the status notification receiving unit 43 receives the power-off notification of the client terminals 23, 24, 25, the updating unit 42 updates the terminal management list 28.

Reference numeral 44 is a communication inability determining unit, and the communication inability determining unit 44 determines the communication inability of the communication management server terminal 21 itself. Reference numeral 45 denotes a transfer processing unit serving as a transfer processing unit. When the communication management server terminal 21 becomes incommunicable, the transfer processing unit 45 pre-determines an alternative communication management sub-server terminal 22 and manages communication management. Sub server terminal 2
Transfer to No. 2. Reference numeral 46 is an input / output interface section for controlling input / output, and 47 is a main control section for controlling each section.

The communication management sub-server terminal 22 is predetermined and serves as a substitute for the communication management server terminal 21 when the communication management server terminal 21 becomes unable to communicate. The communication management sub-server terminal 22 uses the terminal management list 2
It is predetermined from other client terminals having 8 and has the same configuration as the communication management server terminal 21. Terminal management list 28 only for the communication management server terminal 21
Is provided, the communication management sub-server terminal 2
2 is not provided.

Next, FIG. 5 shows the client terminals 23 and 2.
It is a block diagram of 4,25. In FIG. 5, 51 is R
This is AM, and the RAM 51 stores the addresses 52 of its own and other terminals and the group identifiers 53 of its own and other terminals, respectively. The terminal management list 28 is not provided in the RAM 51. Reference numeral 54 is a ROM, and a control program is stored in the ROM 54. Reference numeral 55 denotes a display unit, and information is displayed on the display unit 55. Reference numeral 56 denotes an operation unit, which is used to input necessary information.

Reference numeral 57 is a power-on unit, which is a power-on unit 57.
Powers on the power supply unit 58, and the status communication transmission unit 59 notifies the communication management server terminal 21 of powering on. Further, when the instruction receiving unit 60 receives an instruction to turn on the power, the comparing unit 6 compares the address set for itself, the group identifier and the own address, or the own group identifier.
If the values are compared with each other and match, the power-on unit 57 determines that the power-source unit 58
Turn on the power.

When the communication management server terminal 21 is instructed to turn on the power, the corresponding address is set in the telegram, and the power-on instruction unit 62 issues a power-on instruction to the communication management server terminal 21. To do. Further, when instructing the other client terminals 23, 24, 25 to turn on the power, since it cannot be directly performed, the client terminals 23, 24,
The corresponding address or group identifier of 25 is transmitted, and the communication management server terminal 21 is turned on.

The power supply disconnecting unit 63 disconnects the power supply of the power supply unit 58 and transmits a power supply disconnection notification message from the status notification transmitting unit 59. The input / output interface unit 64 controls input / output, and the main control unit 65 controls each unit. In the client terminals 23, 24, 25, as shown in FIG.
The terminal management list 28 may be provided in the AM 51.

The terminal management list 28 has the same structure as that shown in FIG. The client terminals 23, 24, and 25 having the terminal management list 28 are updated by the update unit (update means) 67 upon receipt of a power-on or power-off message. The client terminals 23, 24, 25 having the terminal management list 28 are directly connected to other client terminals 23, 24, 25.
A power-on instruction unit (power-on instruction means) 62 can issue a power-on instruction to 24 and 25. Further, the terminal management list 28 and the like are displayed on the display unit 55.

Next, the operation will be described. When instructing the communication management server terminal 21 from the client terminals 23, 24, 25 at power-on, the address of the communication management server terminal 21 to be powered on is set in the telegram, and the power-on instructing unit 62 powers on. Give instructions. The communication management server terminal 21 on the receiving side compares its own address with its own address in the comparison unit 31, and if they match, the power-on unit 33 turns on the power supply unit 34.

When the power is turned on, the communication management server terminal 2
When issuing an instruction from 1 to the client terminals 23, 24, 25, the client terminal 23, which turns on the power in the message,
The corresponding addresses or the corresponding group identifiers 24 and 25 are set, and the power-on instruction unit 38 instructs the power-on.
The client terminals 23, 24, 25 on the receiving side compare their own addresses or group identifiers with their own addresses or group identifiers in the comparison unit 61, and if they match, the power supply unit 57 powers on the power supply unit 58. I do.

When the power is turned on, the client terminals 23, 24, 25 not having the terminal management list 28 to the other client terminals 23, 2 not having the terminal management list 28.
4 and 25, the client terminals 23, 24, which want to turn on the communication management server terminal 21,
The corresponding address of 25 or the group identifier is transmitted from the power-on instruction unit 62, and the communication management server terminal 21 issues a power-on instruction from the power-on instruction unit 38 based on the terminal management list 28.

The client terminals 23, 24, 25, which have received the power-on instruction, compare the address or group identifier set for themselves with their own address or group identifier in the comparison unit 61, and if they match, the power-on unit 57 The power supply unit 58 is turned on. At power-on, the client terminals 23, 24, 2 having the terminal management list 28
When issuing an instruction from 5 to another client terminal 23, 24, 25 having the terminal management list 28, the corresponding address or group identifier of the client terminal 23, 24, 25 to be powered on is set in the message and the power is turned on. Indicator 62
Gives an instruction to turn on the power.

Receiving side client terminals 23, 24, 2
5 compares the address or group identifier set for itself with its own address or address identifier in the comparison unit 61, and if they match, the power supply unit 57 causes the power supply unit 58.
Turn on the power. Next, when the communication management server terminal 21 is powered off, the communication management server terminal 21 requests the client terminals 23, 24, 25 from the status notification requesting unit 39 for status notification. Upon receiving this notification, the client terminal 2
3, 24 and 25 notify the status from the status notification transmitting unit 59.

In the communication management server terminal 21, if there is an operating terminal, the power-off section 40 does not turn off the power supply section 34. If there is an inactive terminal, the communication management server terminal 21 instructs the power-off instruction section 41 to turn off the power. this is,
This is because the person in charge may return without turning off the power at the client terminals 23, 24, 25. When there are no active terminals due to the power-off instruction, the communication management server terminal 21 causes the power-off unit 40 to turn off the power supply unit 34.

If there is a non-responding terminal, it is determined that the communication management server terminal 21 is out of order, an error is displayed on the display section 36, and the updating section 42 updates the terminal management list 28. And the power supply unit 34 by the update cutting unit 40.
Power off. Next, the client terminals 23, 2
When the power of the client terminals 23 and 25 is cut off,
24 and 25 transmit a message by the situation communication transmitting unit 59,
The communication management server terminal 21 updates the terminal management list 28.

Next, when the communication management server terminal 21 becomes unable to communicate, the communication management sub-server terminal 22 is determined in advance from among the client terminals 23, 24, 25 having the terminal management list 28, and management is performed. Transfer to the communication management sub server terminal 22. The communication failure determination unit 44 of the communication management server terminal 21 determines the communication failure, and the transfer processing unit 45 transfers the management to the communication management sub server terminal 22.

As described above, in this embodiment, from the communication management server terminal 21 to the client terminals 23, 24,
25, and the client terminals 23, 24, 25 can be instructed to power on to the client terminals 23, 24, 25. In addition, since a multiple server system has recently appeared in which communication, files, printers, etc. are managed by separate terminals, it is necessary to issue power-on instructions to multiple terminals. be able to.

When the communication management server terminal 21 is powered off, if a status notification is requested and there is a non-responding terminal, it is determined that there is a failure, and the terminal management list 2
8 is updated, so the communication management server terminal 21
There is no longer a case where the power of the can be cut off forever. Furthermore, since the management is transferred to the communication management sub server terminal 22 even if the communication management server terminal 21 becomes incapable of communication, it is possible to prevent the network from going down.

As a result, the operability and operability of the LAN can be improved.

[0054]

As described above, according to the present invention, the communication management server terminal can instruct the client terminal, the client terminal to the client terminal, and at the same time, the plurality of client terminals can be turned on. it can. Also, since the terminal management list is updated when there is a non-responding terminal, the communication management server terminal can never be turned off.

Further, even when the communication management server terminal becomes incapable of communication, one of the client terminals having the terminal management list is determined in advance as the communication management sub-server terminal,
Since the management is transferred, it is possible to prevent the network from going down. As a result, the operability and operability of the LAN can be improved.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 3 is a block diagram of a communication management server terminal.

FIG. 4 is an explanatory diagram of a terminal management list.

FIG. 5 is a block diagram of a client terminal

FIG. 6 is a block diagram of another client terminal.

FIG. 7 is an overall configuration diagram showing a conventional example.

FIG. 8 is a block diagram of a conventional communication management server terminal.

FIG. 9 is an explanatory diagram of a conventional operating terminal list.

FIG. 10 is a block diagram of a conventional client terminal.

[Explanation of symbols]

 21: Communication management server terminal 22: Communication management sub-server terminal 23-25: Client terminal 26: LAN 27,51: RAM 28: Terminal management list 29, 52: Address 30, 53: Group identifier 31, 61: Comparison unit 32, 60: Instruction receiving unit 33, 57: Power supply unit 34, 58: Power supply unit 35, 54: ROM 36, 55: Display unit 37, 56: Operation unit 38, 62: Power supply instruction unit (power supply instruction means) ) 39: status notification requesting unit 40, 63: power supply disconnecting unit 41: power supply disconnecting instruction unit 42, 67: updating unit (updating unit) 43: status notification receiving unit 44: communication failure determining unit 45: transfer processing unit (transfer processing) Means) 46, 64: input / output interface section 47, 65: main control section 59: status notification transmission section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuichi Kaneko 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Masafumi Asano 1015, Kamikodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited ( 72) Inventor Masahiro Ueno 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Atsushi Ito, 1015, Kamikodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (8)

[Claims] 1. An information communication system having a communication management server terminal and a client terminal mutually connected by a local information communication network, wherein the communication management server terminal has a terminal management list of addresses, group identifiers, operating conditions, etc. And an information communication system characterized in that the client terminal is turned on by a specific telegram from the communication management server terminal. 2. An information communication system having a communication management server terminal and a client terminal mutually connected by a local information communication network, wherein all the terminals are provided with a terminal management list of addresses, group identifiers, operating conditions, etc. An information communication system characterized in that each terminal is turned on by a specific telegram. 3. When powering on another client terminal from the client terminal, the client management terminal transmits the corresponding address or group identifier of the terminal to which power is to be supplied to the communication management server terminal, and then the communication management server terminal. The information communication system according to claim 1, further comprising power-on instruction means for outputting a power-on instruction to the corresponding client terminal based on the terminal management list. 4. A terminal provided with the terminal management list is a power-on instruction that outputs a power-on instruction to a plurality of terminals at the same time by setting a corresponding address or a group identifier of the terminal to be powered on in a message. The information communication system according to claim 1 or 2, further comprising means. 5. The terminal provided with the terminal management list has updating means for updating the terminal management list when a message of status notification is received when the client terminal is powered off. 2. The information communication system according to 2. 6. The communication management server terminal has a power-off instruction means for requesting a status notification and outputting a power-off instruction to an inactive terminal when the communication management server terminal is powered off. The information communication system according to claim 1 or 2. 7. The communication management server terminal, when the power supply of the communication management server terminal is turned off, requests a status notification to another terminal and displays an error on a non-responsive terminal and a terminal management list. 3. The information communication system according to claim 1, further comprising an updating unit for updating the. 8. The transfer processing of transferring the management of the communication management server terminal from a client terminal having a terminal management list to a predetermined communication management sub-server terminal when the communication management server terminal becomes unable to communicate. The information communication system according to claim 1, further comprising means.