JPH06205106A - Remote maintenance device - Google Patents

Abstract

PURPOSE:To shorten the holding time of an information channel by transmitting maintenance information without communicating information between the information channels of networks. CONSTITUTION:ISDN interface parts 102 and 201 of a device 1 to be maintained and a maintenance device 2 are connected by an ISDN. At the device 1 to be maintained, a maintenance data storage part 104 stores the maintenance information, when a maintenance data monitor part 101 detects that the fixed quantity of maintenance information is stored, a call setting part 103 requests the setting of a call to the maintenance device 2. When a call setting detection part 202 recognizes the call setting request, at the maintenance device 2, a maintenance data processing part 204 processes the maintenance information in a call control signal. Before a communication enable state is provided after it is recognized that the call control signal of the call setting request is received, a call release part 203 releases the call.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote maintenance device in an information processing device.

[0002]

2. Description of the Related Art Conventionally, this type of remote maintenance device enables communication on an information channel by exchanging a call control signal on a control channel between a device to be maintained and a maintenance device.
They used the information channel to send and receive maintenance information.

Next, a conventional technique will be described with reference to the drawings. FIG. 6 is a block diagram showing a first example of a conventional remote maintenance device.

The remote maintenance device of the first conventional example communicates by transmitting and receiving a call control signal through a control channel for a call control signal in order to form a communication path by an information channel for transferring user information with a partner. After the path is formed, the user equipment 6 and the maintenance equipment 7 which are connected to the ISDN capable of transferring the user information through the information channel and setting the information element which is transparently carried to the other user in the call control signal Consists of.

At the user-network interface stipulation point 67 at which the user can receive services from the ISDN,
User has multiple information channels and one control channel
Access to multiple lines.

The ISDN interface unit 602 of the device to be maintained 6 connects a control channel and an information channel at a user / network interface defining point (hereinafter referred to as S / T point interface) 67 for connecting the device to be maintained 6 to the ISDN. Performs multiplexing, decomposition, and signal level conversion.

The maintenance data storage unit 604 stores maintenance information. The maintenance data storage unit 604 may be on another information processing device.

The maintenance data amount monitoring unit 601 monitors the maintenance information amount stored in the maintenance data storage unit 604 by the maintenance data amount monitoring signal 626, and when it detects that a fixed amount of maintenance information is stored, the maintenance data amount is detected. Storage completion signal 62
Generates 0.

Upon receiving the maintenance data storage completion signal 620, the call setting transmitting unit 603 transmits a call setting message 621 addressed to the maintenance device 7 collecting the maintenance information to the ISDN interface unit 602.

The ISDN interface unit 602 sends the received call setup message 621 to the S / T point interface 6
7 to the control channel. The ISDN interface unit 602 transmits the control channel reception message 622 received from the control channel of the S / T point interface 67 to the communication permission detection unit 605 and the release transmission unit 607.

When the communication enable detector 605 detects a response message from the received control channel reception message 622, CCITT Recommendation I.S. 451 (Source: CCITT
Red Book III. 5 (Recommended by I series) (September 22, 1986, issued by Japan ITU Association), it is determined that the communication on the information channel is enabled, and the maintenance data transmission instruction 623 is transmitted to the maintenance data transmission unit 606.

When the maintenance data transmission unit 606 receives the maintenance data transmission instruction 623, the maintenance data transmission unit 606 reads the maintenance information from the maintenance data storage unit 604 as maintenance data 624, and the ISDN
It is transmitted to the interface unit 602 as transmission maintenance data 625.

The ISDN interface unit 602 transmits the transmission maintenance data 625 to the maintenance device 7 collecting the maintenance information on the information channel of the S / T point interface 67.

When the release transmission unit 607 detects a disconnection message from the received control channel reception message 622, it transmits a release message 627 to the ISDN interface unit 602.

The ISDN interface unit 602 sends a release message 627 to the control channel of the S / T point interface 67, so that the ISDN releases the call.

ISDN interface section 7 of maintenance device 7
01 is an S / T for connecting the maintenance device 7 to the ISDN.
The control interface and the information channel in the point interface 67 are multiplexed, decomposed, and the signal level is converted.

The ISDN interface unit 701 is an S / T
The control channel reception message 721 received from the control channel of the point interface 67 is transmitted to the call setting detection unit 702.
It transmits to the communication possible detection part 703.

When the call setup detection unit 702 detects a call setup message from the device to be maintained 6 in the received control channel reception message 721, it sends a response message 722 to the ISDN interface unit 701. ISDN
The interface unit 701 receives the response message 72
2 is transmitted to the control channel of the S / T point interface 67.

When the communication enable detector 703 detects a response confirmation message from the received control channel reception message 721, CCITT Recommendation I.S. According to 451 it is determined that communication on the information channel has become possible, and a communication enable detection signal 723 is transmitted to the maintenance data receiving unit 704.

Upon receiving the communication enable detection signal 723, the maintenance data receiving unit 704 receives the ISDN interface unit 701.
Starts searching for maintenance information from the information channel reception data 724 received from the information channel of the S / T point interface 67. When the maintenance data receiving unit 704 detects the maintenance information, the maintenance data receiving unit 704 transmits it as maintenance data 727 to the maintenance data processing unit 706. When the reception end of the maintenance information is detected, the reception end signal 725 is transmitted to the disconnection transmitter 705.

The maintenance data processing unit 706 stores and displays the received maintenance data 727.

Upon receiving the reception end signal 725, the disconnect transmitter 705 transmits a disconnect message 726 to the ISDN interface unit 701. The ISDN interface unit 701 transmits a disconnection message 726 to the control channel of the S / T point interface 67.

FIG. 7 is a block diagram showing a second example of the conventional remote maintenance device.

The remote maintenance device of the second conventional example communicates by sending and receiving a call control signal through a control channel for a call control signal in order to form a communication path by an information channel for transferring user information with a certain partner. After the path is formed, the serviced device 8 and the serviced device 7, which are connected to the ISDN, which transfer user information on the information channel and which can set information elements to be transparently carried to the other user in the call control signal, Consists of.

The ISDN interface section 802 of the device to be maintained 8 operates to connect the device to be maintained 8 to the ISDN.
The control channel and the information channel in the / T point interface 87 are multiplexed, decomposed, and the signal level is converted.

The maintenance data storage unit 804 stores maintenance information. The maintenance data storage unit 804 may be located on another information processing device.

The event detector 801 generates an event detection signal 820 when detecting the occurrence of a certain event.

The call setting transmission unit 803 uses the event detection signal 8
When 20 is received, the call setting message 821 addressed to the maintenance device 7 collecting the maintenance information is transmitted to the ISDN interface unit 802.

The ISDN interface section 802 sends the received call setup message 821 to the S / T point interface 8
7 to the control channel. The ISDN interface unit 802 transmits the control channel reception message 822 received from the control channel of the S / T point interface 87 to the communication permission detection unit 805 and the release transmission unit 807.

When the communication enable detector 805 detects a response message from the received control channel reception message 822, CCITT recommendation I.S. According to 451 it is determined that communication on the information channel has become possible, and a maintenance data transmission instruction 823 is transmitted to the maintenance data transmission unit 806.

When the maintenance data transmission unit 806 receives the maintenance data transmission instruction 823, it reads the maintenance information from the maintenance data storage unit 804 as the maintenance data 824, and the ISDN
It is transmitted to the interface unit 802 as transmission maintenance data 825.

The ISDN interface section 802 transmits the transmission maintenance data 825 to the maintenance device 7 collecting the maintenance information on the information channel of the S / T point interface 87.

When the release transmission unit 807 detects a disconnection message from the received control channel reception message 822, it transmits a release message 826 to the ISDN interface unit 802.

The ISDN interface section 802 sends a release message 826 to the control channel of the S / T point interface 87, so that the ISDN releases the call.

Since the configuration and operation of the maintenance device 7 are exactly the same as those of the above-mentioned first conventional example, description thereof will be omitted.

Next, FIG. 8 shows the flow of information on the control channel and the information channel of the S / T point interface in FIGS. 6 and 7 when the remote maintenance devices of the first and second conventional examples are connected to the ISDN. FIG. This information flow is C
CITT Recommendation I. Follow 451.

The device to be maintained 6 forms a communication path in the information channel each time a certain amount of maintenance information is stored in the maintenance data storage unit, and the device to be maintained 8 forms a communication path each time an event occurs. A call setup message addressed to the maintenance device 7 requesting the link setup is transmitted to the control channel. The maintenance device 7, which has received the call setup message from the device to be maintained 6 or 8, transmits a response message to the control channel when the link setup is accepted. At this time, the ISDN transmits a response confirmation message to the maintenance device 7 through the control channel, and the communication channel through the information channel is set to the device under maintenance 6 or 8 and the maintenance device 7.
Set between. After that, the device to be maintained 6 or 8 transmits the maintenance data, which is the maintenance information, to the maintenance device 7 through the information channel. When receiving the maintenance data, the maintenance device 7 transmits a disconnection message to the control channel. At this time IS
The DN sends a disconnection message to the device under maintenance 6 or 8 and releases the communication channel of the information channel set between the device under maintenance 6 or 8 and the device under maintenance 7. When the device to be maintained 6 or 8 that has received the disconnection message transmits a release message, the ISDN releases the link setting.

Next, FIG. 9 is a block diagram showing a third example of the conventional remote maintenance device.

The remote maintenance device of the third conventional example communicates by transmitting and receiving a call control signal on a control channel for a call control signal in order to form a communication path by an information channel for transferring user information with a certain partner. After the path is formed, the user device 10 and the maintenance device 9 are connected to the ISDN that transfers user information on the information channel and can set information elements that are transparently carried to the other user in the call control signal. Consists of.

The ISDN interface unit 1002 of the device to be maintained 10 multiplexes, decomposes, and converts the signal level of the control channel and the information channel in the S / T point interface 109 in order to connect the device to be maintained 10 to the ISDN.

The maintenance data storage unit 1004 stores maintenance information. The maintenance data storage unit 1004 may be on another information processing device.

The ISDN interface unit 1002 is S /
The control channel reception message 1022 received from the control channel of the T-point interface 109 is transmitted to the call setting detection unit 1
003, the communication availability detection unit 1005, and the release transmission unit 1006.

When the call setup detection unit 1003 detects the call setup message from the maintenance device 9 in the received control channel reception message 1022, the response message 1021 is sent.
Is transmitted to the ISDN interface unit 1002.

The ISDN interface section 1002 transmits the received response message 1021 to the control channel of the S / T point interface 109.

When the communication availability detecting unit 1005 detects a response confirmation message from the received control channel reception message 1022, CCITT recommendation I.S. In accordance with 451 it is determined that communication on the information channel has become possible, and maintenance data transmission instruction 1023 is transmitted to maintenance data transmission unit 1001.

When the maintenance data transmission unit 1001 receives the maintenance data transmission instruction 1023, the maintenance data storage unit 1001.
4, maintenance information is read as maintenance data 1024,
Send maintenance data 1 to ISDN interface 1002
It is transmitted as 025.

The ISDN interface unit 1002 transmits the transmission maintenance data 1025 to the maintenance device 9 which collects the maintenance information on the information channel of the S / T point interface 109.

When the release transmission unit 1006 detects a disconnection message in the received control channel reception message 1022, it transmits a release message 1026 to the ISDN interface unit 1002.

The ISDN interface unit 1002 sends a release message 1026 to the control channel of the S / T point interface 109 to release the call from the ISDN.

ISDN interface section 9 of maintenance device 9
01 is an S / T for connecting the maintenance device 9 to the ISDN.
The control interface and the information channel in the point interface 109 are multiplexed, decomposed, and the signal level is converted.

The call setting transmission unit 902 requests the transmission of the maintenance information when the call setting message 92 addressed to the device to be maintained 10 is sent.
2 is transmitted to the ISDN interface unit 901. IS
The DN interface unit 901 transmits the received call setup message 922 to the control channel of the S / T point interface 109.

The ISDN interface unit 901 is an S / T
The control channel reception message 921 received from the control channel of the point interface 109 is transmitted to the communication enable detector 903.
Send to.

When the communication enable detector 903 detects a response message from the received control channel reception message 921, CCITT Recommendation I.S. According to 451 it is determined that communication on the information channel has become possible, and a communication enable detection signal 923 is transmitted to the maintenance data receiving unit 904.

When the maintenance data receiving section 904 receives the communication enable detection signal 923, the ISDN interface section 901
Starts searching for maintenance information from the information channel reception data 924 received from the information channel of the S / T point interface 109. When the maintenance data receiving unit 904 detects the maintenance information, the maintenance data receiving unit 904 transmits it as maintenance data 927 to the maintenance data processing unit 906. When the reception end of the maintenance information is detected, the reception end signal 925 is transmitted to the disconnection transmission unit 905.

The maintenance data processing unit 906 stores and displays the received maintenance data 927.

Upon receiving the reception end signal 925, the disconnection transmission section 905 transmits a disconnection message 926 to the ISDN interface section 901. The ISDN interface unit 901 transmits the received disconnection message 926 to the control channel of the S / T point interface 109.

Next, FIG. 10 shows the S / T in FIG. 9 when the remote maintenance device of the third conventional example is connected to ISDN.
It is a figure which shows the flow of information of the control channel and information channel of a point interface. This information flow is based on CCITT Recommendation I. Follow 451.

When the maintenance device 9 requests the transmission of the maintenance information, the maintenance device 9 transmits to the control channel a call setting message addressed to the device to be maintained 10 requesting the link setting for forming the communication channel in the information channel. Upon receiving the call setup message from the maintenance device 9, the device under maintenance 10 transmits a response message to the control channel when the link setup is accepted. At this time, the ISDN transmits a response confirmation message to the device under maintenance 10 on the control channel, and sets a communication channel on the information channel between the device under maintenance 10 and the device under maintenance 9. After that, the device to be maintained 10 transmits the maintenance data, which is the maintenance information, to the maintenance device 9 through the information channel. When receiving the maintenance data, the maintenance device 9 sends a disconnection message to the control channel. At this time, the ISDN transmits a disconnection message to the device under maintenance 10 and releases the communication channel of the information channel set between the device under maintenance 10 and the device under maintenance 9. Upon receiving the disconnection message, the device under maintenance 10 sends a release message, and the ISDN releases the link setting.

[0059]

In this conventional remote maintenance device, the maintenance device and the device to be maintained send and receive call control signals on the control channel to enable communication on the information channel, and the maintenance information is sent using the information channel. However, there was a problem that the information channel was suspended during that time.

[0060]

A remote maintenance device according to the first aspect of the invention uses a call control signal for a call control channel to establish a communication path for a user with an information channel for transferring user information. After transmitting and receiving a signal to form the communication path, transfer the user information through the information channel,
Further, in a remote maintenance device comprising a maintenance device and a maintenance device connected to a network capable of setting information elements to be transparently carried to the other user in the call control signal, the maintenance device requires maintenance required for maintenance. Maintenance data storage means for storing information, maintenance data amount monitoring means for detecting that a fixed amount of the maintenance information is stored, and maintenance data amount monitoring means for detecting that a fixed amount of the maintenance information is stored And call setting transmitting means for transmitting a call control signal requesting a call setting to the maintenance device as the information element that is transparently carried to the other user in the call control signal in the network by the maintenance information stored at that time, A network interface unit for performing signal conversion for connecting the maintenance target device to the network, wherein the maintenance device calls the call from the maintenance target device. Call setting detection means for recognizing receipt of a call control signal requesting a call setting, maintenance data processing means for processing the maintenance information which is an information element in the call control signal requesting the call setting, and the call Call release means for releasing the call before the communication becomes possible after recognizing that the call control signal requesting the setting is received, and network interface means for performing signal conversion for connecting the maintenance device to the network. It has and.

The remote maintenance device of the second invention transmits and receives a call control signal through a control channel for a call control signal in order to form a communication path by an information channel for transferring user information with a certain partner. After the communication path is formed, the user information is transferred through the information channel, and the maintenance target device and maintenance connected to the network in which the information element that is transparently carried to the other user in the call control signal can be set In the remote maintenance device including a device, the device to be maintained includes a maintenance data storage unit for storing maintenance information necessary for maintenance, an event detection unit for detecting occurrence of a certain event, and the event detection unit for detecting an event. The maintenance information stored when the occurrence is detected is used as an information element transparently carried to the other user in the call control signal in the network. The maintenance device comprises call setting transmission means for transmitting a call control signal for requesting a call setting to the maintenance device, and network interface means for performing signal conversion for connecting the maintenance target device to the network. Call setup detection means for recognizing receipt of a call control signal requesting the call setup from the maintenance device, and maintenance data for processing the maintenance information which is an information element in the call control signal requesting the call setup. Processing means, call releasing means for releasing the call before the communication becomes possible after recognizing that the call control signal requesting the call setting has been received, and a signal for connecting the maintenance device to the network And network interface means for performing conversion.

The remote maintenance device according to the third aspect of the present invention exchanges the call control signal with the control channel for the call control signal in order to form a communication path by the information channel for transferring the user information with a certain partner. After the communication path is formed, the user information is transferred through the information channel, and the maintenance target device and maintenance connected to the network in which the information element that is transparently carried to the other user in the call control signal can be set In the remote maintenance device including a device, the device to be maintained includes maintenance data storage means for storing maintenance information necessary for maintenance, maintenance data request detecting means for detecting a maintenance information transmission request from the maintenance device, and The maintenance information stored when the maintenance data request detecting means detects the transmission request for the maintenance information is transmitted as a transparent signal in the call control signal in the network. Call setting transmission means for transmitting a call control signal requesting call setting to the maintenance device as an information element carried to the other user, and network interface means for performing signal conversion for connecting the maintenance target device to the network. Recognizing that the maintenance device has received a maintenance data request transmission means for transmitting a request for transmitting the maintenance information to the device under maintenance, and a call control signal for requesting the call setting from the device under maintenance. Call setting detection means, maintenance data processing means for processing the maintenance information, which is an information element in the call control signal requesting the call setting, and recognizing that the call control signal requesting the call setting is received. After that, call release means for releasing the call before the communication becomes possible and network interface means for performing signal conversion for connecting the maintenance device to the network are provided.

[0063]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a remote maintenance device of the first invention.

This embodiment is an improvement of the first conventional example shown in FIG. 6, in which the remote maintenance device is called to form a communication path with a certain party by means of an information channel for transferring user information. After the call control signal is sent and received on the control channel for the control signal to form the communication path, the user information is transferred on the information channel, and the information element that is transparently conveyed to the other user can be set in the call control signal. ISD
The maintenance target device 1 and the maintenance device 2 connected to N are provided.

At the S / T point 12 where the user can receive service from the ISDN, the user multiplexes and accesses a plurality of information channels and one control channel on one line.

The ISDN interface section 102 of the device to be maintained 1 is S for connecting the device to be maintained 1 to the ISDN.
The / T point interface 12 multiplexes and disassembles the control channel and the information channel, and performs signal level conversion.

The maintenance data storage unit 104 stores maintenance information. The maintenance data storage unit 104 may be on another information processing device.

The maintenance data amount monitoring unit 101 monitors the maintenance information amount stored in the maintenance data storage unit 104 by the maintenance data amount monitoring signal 124, and when it detects that a fixed amount of maintenance information is stored, the maintenance data amount is detected. Storage completion signal 12
1 is generated.

Upon receiving the maintenance data storage completion signal 121, the call setting transmission unit 103 reads the maintenance information from the maintenance data storage unit 104 as the maintenance data 122, and the ISDN.
The call setting message 123 addressed to the maintenance device 2 is transmitted to the ISDN interface unit 102 as the user / user information on the control channel.

The user-user information is CCITT Recommendation I. As defined in 451, it is one of the information elements of the call setup message and is used for transmitting information between users. The content of this information element is not interpreted by the web,
It is transparently transferred and carried to the other user.

The ISDN interface unit 102 sends the received call setting message 123 to the S / T point interface 1
2 control channels.

ISDN interface section 2 of maintenance device 2
01 is an S / T for connecting the maintenance device 2 to the ISDN.
The control interface and the information channel in the point interface 12 are multiplexed, decomposed, and the signal level is converted.

The ISDN interface unit 201 is an S / T
The control channel reception message 221 received from the control channel of the point interface 12 is transmitted to the call setting detection unit 202.

When the call setup detection unit 202 detects the call setup message from the device to be maintained 1 in the received control channel reception message 221, it sends a call setup detection signal 222 to the call release unit 203 and sends the call setup message. Maintenance information that is the user / user information of the maintenance data 22
4 to the maintenance data processing unit 204.

The maintenance data processing unit 204 stores and displays the received maintenance data 224.

Upon receiving the call setting detection signal 222, the call release unit 203 releases a call completion message 223 indicating rejection of the incoming call.
Is transmitted to the ISDN interface unit 201. ISD
The N interface unit 201 releases the release completion message 223.
To the control channel of the S / T point interface 12 to end the series of sequences.

FIG. 2 is a block diagram showing an embodiment of the remote maintenance device of the second invention.

This embodiment is an improvement of the remote maintenance device of the second conventional example shown in FIG. 7, and is used to form a communication path with a certain party by means of an information channel for transferring user information. After the call control signal is sent and received on the control channel for the control signal to form the communication path, the user information is transferred on the information channel, and the information element that is transparently conveyed to the other user can be set in the call control signal. ISD
The maintenance target device 3 and the maintenance device 2 connected to N are provided.

The ISDN interface unit 302 of the device to be maintained 3 operates to connect the device 3 to be maintained to the ISDN.
The control channel and the information channel in the / T point interface 32 are multiplexed, decomposed, and the signal level is converted.

The maintenance data storage unit 304 stores maintenance information. The maintenance data storage unit 304 may be on another information processing device.

The event detection unit 301 generates an event detection signal 321 when detecting the occurrence of a certain event.

The call setting transmitter 303 receives the event detection signal 3
21 is received, the maintenance information is read from the maintenance data storage unit 304 as maintenance data 322, and a call setting message 323 addressed to the maintenance device 2 is sent to the ISDN interface unit 3 as user / user information on the ISDN control channel.
Send to 02.

The ISDN interface unit 302 sends the received call setting message 323 to the S / T point interface 3
2 control channels.

Since the configuration and operation of the maintenance device 2 are exactly the same as those of the first embodiment shown in FIG. 1, the description thereof will be omitted.

Next, FIG. 3 shows the information flow of the control channel and the information channel of the S / T point interface in FIGS. 1 and 2 when the remote maintenance device of the first and second inventions is connected to the ISDN. It is a figure. This information flow is CC
ITT Recommendation I. Follow 451.

The device to be maintained 1 sends a call setting message to the device to be maintained 2 every time a certain amount of maintenance information is stored in the maintenance data storage unit, and the device to be maintained 3 issues a call setting message to the maintenance device 2. Send to. At this time, maintenance data is set as user / user information of the call setup message.
Upon receiving the call setup message from the device to be maintained 1 or 3, the maintenance device 2 sends maintenance data, which is the user / user information of the call setup message, to the maintenance data processing unit, and then sends a release completion message to the control channel. With the above, ISDN terminates a series of sequences.

Next, FIG. 4 is a block diagram showing an embodiment of the remote maintenance device of the third invention.

This embodiment is an improvement of the remote maintenance device of the third conventional example shown in FIG. 9, and is used to form a communication path with a partner by means of an information channel for transferring user information. After the call control signal is sent and received on the control channel for the control signal to form the communication path, the user information is transferred on the information channel, and the information element that is transparently conveyed to the other user can be set in the call control signal. ISD
The maintenance target device 5 and the maintenance device 4 are connected to the N.

The ISDN interface unit 502 of the device to be maintained 5 is S for connecting the device to be maintained 5 to the ISDN.
The control channel and the information channel in the / T point interface 54 are multiplexed, decomposed, and the signal level converted.

The maintenance data storage unit 504 stores maintenance information. The maintenance data storage unit 504 may be on another information processing device.

The ISDN interface unit 502 is an S / T
The control channel reception message 525 received from the control channel of the point interface 54 is transmitted to the maintenance data request detection unit 501.

When the maintenance data request detection unit 501 detects the call setup message sent from the maintenance device 4 in the received control channel reception message 525, it sends a release completion message 524 indicating rejection of the incoming call to the ISDN interface unit 502. At the same time, the maintenance data request detection signal 521 is generated.

The ISDN interface section 502 transmits the received release completion message 524 to the control channel of the S / T point interface 54.

When the call setting transmission unit 503 receives the maintenance data request detection signal 521, the maintenance information is read out from the maintenance data storage unit 504 as the maintenance data 522, and the ISDN is sent.
A call setting message 523 addressed to the maintenance device 4 is transmitted to the ISDN interface unit 502 as user / user information on the control channel of the. ISDN interface section 50
2 transmits the received call setup message 523 to the S / T point interface 54.

ISDN interface section 4 of maintenance device 4
01 is an S / T for connecting the maintenance device 4 to the ISDN.
The control interface and the information channel in the point interface 54 are multiplexed, decomposed, and the signal level is converted.

When the maintenance apparatus 4 requests the maintenance target apparatus 5 to transmit maintenance information, the maintenance data request transmission unit 405.
Sends ISDN to call setup message 425 addressed to device 5 to be maintained.
It is transmitted to the interface unit 401.

The ISDN interface unit 401 sends the received call setup message 425 to the S / T point interface 5
4 control channels.

As described above, when the device to be maintained 5 receives the call setting message 425 from the maintenance device 4, it transmits the release completion message 524 and then the call setting message 523 addressed to the maintenance device 4.

The ISDN interface unit 401 is an S / T
The control channel reception message 421 received from the control channel of the point interface 54 is transmitted to the call setting detection unit 402.

When the call setup detection unit 402 detects the call setup message from the device to be maintained 5 in the received control channel reception message 421, it sends the call setup detection signal 422 to the call release unit 403 and also sends the call setup message. The maintenance information which is the user / user information in the maintenance data 4
24 to the maintenance data processing unit 404.

The maintenance data processing unit 404 stores and displays the received maintenance data 424.

When the call release unit 403 receives the call setting detection signal 422, the release completion message 423 indicating rejection of the incoming call is received.
Is transmitted to the ISDN interface unit 401. ISD
The N interface unit 401 sends the release completion message 423.
To the control channel of the S / T point interface 54 to end the series of sequences.

Next, FIG. 5 is a diagram showing the flow of information in the control channel and information channel of the S / T point interface in FIG. 4 when the remote maintenance device of the third invention is connected to the ISDN. This information flow is based on CCITT Recommendation I. Follow 451.

When the maintenance device 4 requests the maintenance target device 5 to send out maintenance information, a call setup message addressed to the maintenance target device 5 is transmitted to the control channel. Upon receiving the call setup message from the maintenance device 4, the maintenance target device 5 transmits a release completion message to the control channel, and then the maintenance device 4 continues.
Send a call setup message addressed to the control channel. At this time, maintenance data is set as user / user information of the call setup message. Upon receiving the call setup message from the device to be maintained 5, the maintenance device 4 sends maintenance data, which is the user / user information of the call setup message, to the maintenance data processing unit, and then sends a release completion message to the control channel. With the above, ISDN terminates a series of sequences.

[0105]

As described above, according to the present invention, in order to form a communication path on an information channel with a certain partner, a call control signal is transmitted and received on the control channel, and after the communication path is formed, User information can be transferred through the information channel,
Also, in a remote maintenance device consisting of a device to be maintained and a maintenance device connected to the network, which is capable of transparently setting information elements to be transmitted to the other user in the call control signal, information communication on the information channel in the network is performed. Since the maintenance information can be transmitted without performing the maintenance, the holding time of the information channel can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a remote maintenance device of the first invention.

FIG. 2 is a block diagram showing an embodiment of a remote maintenance device of the second invention.

FIG. 3 is an ISD of the remote maintenance device of the first and second inventions.
FIG. 3 is a diagram showing a flow of information of a control channel and an information channel of an S / T point interface in FIGS. 1 and 2 when connected to N.

FIG. 4 is a block diagram showing an embodiment of a remote maintenance device of the third invention.

5 is a diagram showing a flow of information of a control channel and an information channel of an S / T point interface in FIG. 4 when the remote maintenance device of the third invention is connected to ISDN.

FIG. 6 is a block diagram showing a first example of a conventional remote maintenance device.

FIG. 7 is a block diagram showing a second example of a conventional remote maintenance device.

FIG. 8 is a diagram showing the IS of the first and second conventional remote maintenance devices.
FIG. 8 is a diagram showing a flow of information on a control channel and an information channel of the S / T point interface in FIGS. 6 and 7 when connected to a DN.

FIG. 9 is a block diagram showing a third example of a conventional remote maintenance device.

FIG. 10 shows an ISDN remote maintenance device of a third conventional example.
10 is a diagram showing a flow of information on a control channel and an information channel of the S / T point interface in FIG.

[Explanation of symbols]

1,3,5,6,8,10 Maintained device 2,4,7,9 Maintenance device 12,32,54,67,87,109 User / network interface specified point (S / T point interface) 101,601 Maintenance data amount monitoring unit 102, 201, 302, 401, 502, 602, 7
01,802,901,1002 ISDN interface section 103,303,503,603,803,902
Call setting transmitter 104, 304, 504, 604, 804, 1004
Maintenance data storage unit 121,620 Maintenance data storage completion signal 122,224,322,424,522,624,7
27,824,927,1024 Maintenance data 123,323,425,523,621,821,9
22 call setting message 124,626 maintenance data amount monitoring signal 202,402,702,1003 call setting detecting unit 203,403 call releasing unit 204,404,706,906 maintenance data processing unit 221,421,525,622,721 822,9
21, 1022 Control channel reception message 222, 422 Call setting detection signal 223, 423, 524 Release completion message 301, 80 1 Event detection unit 321, 820 Event detection signal 405 Maintenance data request transmission unit 501 Maintenance data request detection unit 521 Maintenance data request Detection signal 605, 703, 805, 903, 1005 Communication possible detection unit 606, 806, 1001 Maintenance data transmission unit 607, 807, 1006 Release transmission unit 623, 823, 1023 Maintenance data transmission instruction 625, 825, 1025 Transmission maintenance data 627 , 826, 1026 Release message 704, 904 Maintenance data receiving unit 705, 905 Disconnect transmission unit 722, 1021 Response message 723, 923 Communication enable detection signal 724, 924 Information channel reception data 7 5,925 receiving end signal 726,926 disconnect message

Claims (3)

[Claims] 1. After a call control signal is transmitted and received on a control channel for a call control signal to form a communication path by an information channel for transferring user information with a certain party, the communication path is formed, In a remote maintenance device comprising a maintenance device and a maintenance device, which are connected to a network capable of transferring the user information through the information channel and setting information elements that are transparently carried to the other user in the call control signal. The device to be maintained has a maintenance data storage unit that stores maintenance information necessary for maintenance, a maintenance data amount monitoring unit that detects that the maintenance information has been stored in a certain amount, and a maintenance data amount monitoring unit that has a certain amount. When the storage of the maintenance information is detected, the stored maintenance information is transparently carried to the other user in the call control signal in the network. Call setting transmitting means for transmitting a call control signal requesting a call setting to the maintenance device as an information element,
A network interface means for performing signal conversion for connecting the maintenance target device to the network, the maintenance device recognizing that the maintenance device has received a call control signal requesting the call setting from the maintenance target device. After recognizing that the setting detection means, the maintenance data processing means for processing the maintenance information which is an information element in the call control signal requesting the call setting, and the call control signal requesting the call setting have been received. 2. A remote maintenance device, comprising: a call releasing device for releasing a call before the communication becomes possible and a network interface device for converting a signal for connecting the maintenance device to the network. 2. A call control signal is transmitted and received on a control channel for a call control signal in order to form a communication path by an information channel for transferring user information with a certain party, and the communication path is formed. In a remote maintenance device comprising a maintenance device and a maintenance device, which are connected to a network capable of transferring the user information through the information channel and setting information elements that are transparently carried to the other user in the call control signal. , The maintenance target device stores maintenance information necessary for maintenance, maintenance data storage means, event detection means for detecting occurrence of a certain event, and storage when the event detection means detects the occurrence of the event. The maintenance information is requested as a call setting to the maintenance device as an information element transparently carried to the other user in the call control signal in the network. The maintenance device requests call setting from the device to be maintained, which comprises call setting transmission means for transmitting a call control signal, and network interface means for performing signal conversion for connecting the device to be maintained to the network. Call setting detection means for recognizing receipt of the call control signal, maintenance data processing means for processing the maintenance information which is an information element in the call control signal requesting the call setting, and requesting the call setting. A call release means for releasing the call before the communication becomes possible after recognizing that the call control signal has been received, and a network interface means for performing signal conversion for connecting the maintenance device to the network. A remote maintenance device characterized in that 3. A call control signal is transmitted and received by a control channel for a call control signal in order to form a communication path by an information channel for transferring user information with a certain other party, and then the communication path is formed, In a remote maintenance device comprising a maintenance device and a maintenance device, which are connected to a network capable of transferring the user information through the information channel and setting information elements that are transparently carried to the other user in the call control signal. , The maintenance target device stores maintenance information necessary for maintenance, maintenance data storage means for detecting maintenance information transmission request from the maintenance device, and maintenance data request detection means for maintenance. The maintenance information stored when the transmission request for the information is detected is required to be transparently carried to the other user in the call control signal in the network. As a basic element, the maintenance device is provided with call setting transmission means for transmitting a call control signal requesting call setting to the maintenance device, and network interface means for performing signal conversion for connecting the maintenance target device to the network. Maintenance data request transmitting means for transmitting a maintenance information transmission request to the device under maintenance; call setting detection means for recognizing receipt of a call control signal requesting the call setting from the device under maintenance; Maintenance data processing means for processing the maintenance information, which is an information element in a call control signal for requesting call setup, and a communication enabled state after recognizing receipt of the call control signal for requesting call setup A remote maintenance device comprising: a call releasing device for releasing a call before; and a network interface device for converting a signal for connecting the maintenance device to the network.