JP2001333113A - Callback processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a callback processing system that can prevent a communication delay in an in-company leased line caused by callback connection from an outside mobile terminal. SOLUTION: A callback control section 31 receives a callback request for aiming at connection to an in-company LAN from an outside mobile terminal 1, and when an in-company LAN nearby the in-company LAN is a LAN 4 and a connection desired LAN is a LAN 3, a leased line availability discrimination section 323 compares a communication data quantity of a leased line 5 detected by a communication data quantity detection section 321 with a threshold value recorded in a threshold value storage section 322, and when the communication data quantity is not more than the threshold value, callback connection utilizing the leased line 5 is conducted and a callback control section directly connected to the nearby LAN calls back the outside mobile terminal 1. When the communication data quantity exceeds the threshold value, callback connection utilizing the leased line 5 is not made and a callback control section connected to the connection desired LAN calls back the out-company mobile terminal 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a callback processing method, and more particularly, to a callback processing method which can use both a public line and a dedicated line for the purpose of connecting an external (outgoing) portable terminal to an in-house network. About.

[0002]

2. Description of the Related Art There is a callback processing method as a method of connecting to an in-house network using a portable terminal such as a notebook PC from outside. This is because when an external mobile terminal accesses the internal network, the internal computer disconnects the line once after receiving the authentication information from the external mobile terminal, and as a result of the verification of the authentication information, the connection to the internal network is established. This technology secures security by making a call from an office to an external mobile terminal and establishing a line only when possible.

[0003] With respect to this callback processing method, there is a technique disclosed in, for example, Japanese Patent Application Laid-Open No. 09-154784. This means that if there are accessible facilities in various parts of Japan and they are connected by a dedicated line in the company, and there is a request for callback from outside, the location of the external mobile terminal is specified and the dedicated line is used. A technology is described in which a call is made from the nearest facility to reduce the telephone charge by using a public line.

[0004]

However, according to the above-mentioned method, since access from outside the company using the dedicated line increases the amount of communication data of the dedicated line, if the measures such as the enhancement of the dedicated line are not performed, However, there is a problem that a delay may occur in data transfer on the dedicated line due to a communication load.

Particularly, in recent years, the functions of portable terminals such as notebook PCs have been improved, the amount of data that can be processed by these portable terminals has been increasing, and the speed of data communication using public lines has been increasing. When downloading data to a mobile terminal or uploading data from an external mobile terminal to an in-house computer, there is a problem that the amount of communication data may increase dramatically.

[0006] It is preferable that the use of the dedicated line can reduce the telephone charge caused by the use of the public line, but this increases the communication load of the dedicated line and causes a delay in the data transfer of the dedicated line other than the connection from outside the company. In environments where there is a problem, it is not the best way to simply determine the equipment that will call back based on the location of the external mobile terminal.

[0007] The present invention has been made under such a background, and it is possible to obtain the economic merit of using a dedicated line for access from outside the company by a callback, while maintaining the possibility of obtaining an economical advantage. An object of the present invention is to provide a callback processing method using a public line and a dedicated line, which can prevent a problem that a communication load on a line increases and a communication delay occurs.

[0008]

According to a first aspect of the present invention, an external portable terminal is connected to an in-house LAN (local area network).
Network), when the access point directly connected to the in-house LAN to which the connection is desired is different from the access point directly connected to the nearest LAN of the external portable terminal, the in-house LAN to which the connection is desired Detects the data traffic of the internal dedicated line connecting the external LAN and the nearest LAN of the external portable terminal, and determines whether to use the internal dedicated line at the time of callback connection based on the value of the detected traffic. A callback processing method is provided.

According to a second aspect of the present invention, in the callback processing method according to the first aspect, a communication data amount of the in-house dedicated line is detected at a connection portion between a plurality of in-house LANs connected by the in-house dedicated line. A communication data amount detection unit, a threshold recording unit that records a predetermined threshold value to be compared with the communication data amount, and a dedicated communication unit that compares the communication data amount with the threshold value. A dedicated line availability judging unit for judging the availability of the line, and if the data traffic is equal to or less than the threshold value, use the in-house dedicated line at the time of callback connection, and the data traffic is If the threshold value is exceeded, the dedicated line in the office is not used during the callback connection.

According to a third aspect of the present invention, in the callback processing method according to the first aspect, when a callback request for connection to the in-house LAN is made from the outside portable terminal, the outside portable terminal is transmitted to the outside portable terminal. It is characterized in that an in-house LAN desired to be connected is specified by activating an installed application program.

According to a fourth aspect of the present invention, in the callback processing method according to the first aspect, when the external portable terminal makes a callback request for connection to the in-house LAN, it is directly connected to the in-house LAN. The location information of the external portable terminal specified from the user authentication information and the information of the base station or the like is transmitted to the callback control unit.

The invention described in claim 5 is the first invention.
In the callback processing method described above, when making a callback request from the outside portable terminal for connection to the in-house LAN, the callback control unit directly connected to the in-house LAN, user authentication information and And transmitting information for specifying an in-house LAN desired to be connected.

In the callback system of the present invention, a method of callback to an external portable terminal is determined according to the data traffic of a dedicated line in the company. More specifically, in-house LAN
A communication data amount detection unit that detects a communication data amount of a dedicated line connecting between the two; a threshold storage unit that stores a threshold value to be compared with the communication data amount; A dedicated line use availability determination unit that determines whether a dedicated line can be used when a callback connection is made based on the value.

An external mobile terminal that has made a callback request for the purpose of connecting to an in-house LAN wants to connect to the in-house L
When the access point directly connected to the AN is different from the nearest access point of the external portable terminal, the dedicated line use availability determination unit stores the communication data amount detected by the communication data amount detection unit and the communication data amount in the threshold storage unit. If the data traffic is below the threshold, the internal private line is used at the time of callback connection.If the data traffic exceeds the threshold, the internal line is used at the time of callback connection. Do not use dedicated lines.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, two embodiments of the present invention will be described in detail with reference to the drawings. <First Embodiment> FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention. Reference numeral 1 denotes an external portable terminal, and reference numeral 2 denotes a public line. External mobile terminal 1 is public line 2
Connection to is possible. The connection to the public line 2 may be made by the portable terminal 1 itself having a communication function, or may be connected to the public line via a communication device such as a mobile phone or a PHS.

Reference numerals 3 and 4 denote internal LANs, reference numerals 31 and 41 denote callback control units, reference numerals 32 and 42 denote internal LAN communication control units,
33 and 43 are in-house computers. The callback control units 31 and 41 are connected to the public line 2 and further connected to the in-house LANs 3 and 4, respectively. In-house L
The inter-AN communication control units 32 and 42 are respectively provided in the in-house LAN.
3, 4 are connected. Internal LAN communication control unit 3
The internal configuration of 2, 42 will be described later. Reference numeral 5 denotes an in-house dedicated line, which connects the in-house LAN communication control units 32 and 42.

FIG. 2 is a block diagram showing the configuration of the external portable terminal 1. The current position specifying unit 11 specifies the current position of the external portable terminal 1 from information such as a base station. The LAN-access point correspondence table storage unit 12 records a correspondence between an access point accessible via the public line 2 and a LAN directly connected to the access point.
The access point identification unit 13 refers to the LAN-access point correspondence table storage unit 12 and
An access point corresponding to the AN can be specified. The communication processing unit 14 performs actual access to the public line 2.

FIG. 3 is a block diagram showing the configuration of the callback control unit 31 (41). User authentication information inspection unit 3
11 (411) examines the user authentication information passed from the external portable terminal 1 via the public line 2, and determines whether or not the user can use the callback system. LAN
The location storage unit 312 (412) records the location of each in-house LAN, and stores the nearest LAN identification unit 3 near the external portable terminal.
13 (413) stores the LAN location storage unit 312 (4
With reference to 12), the nearest LAN of the external portable terminal, that is, the LAN to which the nearest access point of the external portable terminal is directly connected is specified based on the location information transmitted from the external portable terminal 1. Public line communication processing unit 314
(414) receives a call from the external portable terminal 1 via the public line 2, receives data such as user authentication information,
Conversely, a call to the outside portable terminal 1 is made at the time of callback.

FIG. 4 shows an in-house LAN communication control unit 32 (4
It is a block diagram which shows the structure of 2). The communication data amount detection unit 321 (421) is provided with the callback control unit 31 (4
The communication data amount of the in-house dedicated line 5 connecting the two LANs specified by 1) is detected. Threshold storage unit 322
(422) records the communication data amount of the dedicated line 5, which is a criterion for determining whether to permit the callback connection using the dedicated line 5, and uses the dedicated line availability determination unit 323 (42).
3) In response to an inquiry from the callback control unit 31 (41), the value detected by the communication data amount detection unit 321 (421) and the value recorded in the threshold value storage unit 322 (422) are stored. By making a comparison, it is determined whether or not to permit the callback connection using the dedicated line 5, and the result is notified to the callback control unit 31 (41).

Next, the operation of the present invention in the callback system configured as shown in FIGS. 1, 2, 3, and 4 will be described with reference to the flowcharts of FIGS. In step S1 of FIG. 5 (hereinafter referred to as S1 or the like), when connecting to an in-house LAN by callback, first, which in-house LAN to which connection is desired is specified. This may be input directly to the external portable terminal 1 by the user of the external portable terminal 1, or may be specified by the application by activating an application installed in the external portable terminal 1. Here, the in-house LAN 3 is specified as an example. The designated external mobile terminal 1 determines the access point identification unit 1 from the information in the LAN-access point correspondence table storage unit 12.
3, the callback control unit 31 is specified as an access point directly connected to the in-house LAN 3 (S2).

Then, a line is connected from the communication processing unit 14 to the callback control unit 31 via the public line 2 for a callback request (S3). At this time, the external mobile terminal 1
It transmits user authentication information such as a user ID and a password, and own location information specified by the current position specifying unit 11 from information of the base station and the like to the callback control unit 31 (S4). After receiving the information from the external portable terminal 1, the callback control unit 31 temporarily disconnects the line (S5). After the disconnection, first, the user authentication information inspection unit 311 checks the user authentication information transmitted from the external portable terminal 1,
Determine whether the callback system is available (S
6). If not available, the process ends.

If the callback system is available, the LAN identification unit 313 closest to the external portable terminal sends the LA
With reference to the location information transmitted from the external portable terminal 1, the nearest LAN of the external portable terminal, that is, the LAN to which the nearest access point of the external portable terminal is directly connected, is specified by referring to the N location storage unit 312. It checks whether it is its own in-house LAN 3 or another LAN (S7). If it is its own in-house LAN 3, the public line communication processing unit 314 calls the outside portable terminal 1 and performs a callback process according to a conventional procedure (S9).

If the nearest LAN of the external portable terminal is not the own in-house LAN 3 but another in-house LAN 4, a check is made to determine whether or not a dedicated line can be used (S8). FIG. 6 shows the operation of S8 as a subroutine. In FIG. 6, the callback control unit 31 allows the inter-LAN communication control unit 32 via the in-house LAN 3 to perform a callback connection using the dedicated line 5 between the in-house LAN 3 and the in-house LAN 4 as the connection destination. Inquiry (S2
1).

The inter-company LAN communication control unit 32, which has received the inquiry, detects the amount of communication data between the in-house LAN 3 and the in-house LAN 4 detected by the communication data amount detection unit 321 by the dedicated line availability determination unit 323 (S22). Then, the threshold value is compared with the threshold value recorded in the threshold value storage unit 322 (S23). Dedicated line 5 if the comparison result is below the threshold
It is determined that the callback connection using is permitted, and the process proceeds to S10 in FIG. If the comparison result exceeds the threshold value, it is determined that the callback connection using the dedicated line 5 is not permitted, and the process proceeds to S9 in FIG.

When a callback connection using the leased line 5 is recognized, the callback control unit 31
3. In-house LAN communication control unit 32, dedicated line 5, in-house LA
The N-to-N communication control unit 42 requests the callback control unit 41 to call back to the external portable terminal 1 via the in-house LAN 4 (S10). Upon receiving the request, the callback control unit 41 calls the external portable terminal 1 by the public line communication processing unit 414 and performs a callback process (S1).
1). After the connection is established by the callback, the external mobile terminal 1 is connected to the callback control unit 41, the internal LAN 4, and the internal L.
It accesses the in-house LAN 3 via the inter-AN communication control unit 42, the dedicated line 5, and the in-house LAN communication control unit 32.

When the callback connection using the leased line 5 is not recognized, the callback control unit 31 calls the outside portable terminal 1 by the public line communication processing unit 314,
Callback processing is performed according to a conventional procedure (S9). After the connection is established by the callback, the external portable terminal 1 directly accesses the in-house LAN 3 via the callback control unit 31 and does not use the in-house dedicated line 5. After establishing the line (S12), the external portable terminal 1 performs actual work such as downloading and uploading data (S13), and disconnects the line after the work is completed (S14).

<Second Embodiment> Next, a second embodiment of the present invention will be described.
An embodiment will be described in detail with reference to the drawings.
The second embodiment is different from the first embodiment in that the external mobile terminal first connects to the line to request a callback at the nearest access point, and the transmitted data does not include the location information, but instead connects. Is different from the first embodiment in that information for specifying the in-house LAN for which the user desires is included.

FIG. 1 is a block diagram showing a configuration applied to the embodiment of the present invention, and the configuration is the same as that of the first embodiment. However, the internal configuration of each component is different from that of the first embodiment as shown below. FIG. 7 is a block diagram illustrating the configuration of the external portable terminal 1. The current position specifying unit 15 specifies the current position of the external portable terminal 1 using a function such as a GPS (global positioning system). The location-access point correspondence table storage unit 16 records the correspondence between the location of the external portable terminal 1 and the access point closest to the location, and the access point identification unit 17 is obtained by the current location identification unit 15. From the location information and the information in the location-access point correspondence table storage unit 16, the access point nearest to the external portable terminal 1 is specified. The communication processing unit 18 performs actual access to the public line 2.

FIG. 8 is a block diagram showing the configuration of the callback control unit 31 (41). User authentication information inspection unit 3
15 (415) examines the user authentication information passed from the external portable terminal 1 via the public line 2, and determines whether or not the user can use the callback system. The connection-desired LAN inspection unit 316 (416) inspects whether the connection-desired LAN identification information passed from the external portable terminal 1 via the public line 2 is its own in-house LAN.

The public line communication processing unit 317 (417) receives a call from the external portable terminal 1 via the public line 2 to receive data such as user authentication information, and conversely, to the external portable terminal 1 at the time of callback. Make a call, etc. FIG. 4 is a block diagram showing the configuration of the in-house LAN communication control unit 32 (42).
The configuration is the same as in the first embodiment.

Next, the operation of the present invention in the callback system configured as shown in FIGS. 1, 4, 7, and 8 will be described with reference to the flowcharts of FIGS. In FIG. 9, when connecting to an in-house LAN by callback, first, the in-house LAN to be connected is determined to which in-house LAN.
It is specified (S1). Next, the external mobile terminal 1 specifies the location of the external mobile terminal 1 by the current position specifying unit 15, and, based on the location information and the information in the location-access point correspondence table storage unit 16, the nearest access by the access point specifying unit 17. Points are specified (S2). Here, as an example, it is assumed that the nearest access point is specified as the callback control unit 31 directly connected to the in-house LAN 3.

Then, a line is connected from the communication processing unit 18 to the callback control unit 31 via the public line 2 for a callback request (S3). At this time, the external mobile terminal 1
User authentication information such as a user ID and a password, and information for specifying an in-house LAN to which connection is desired are transmitted to the callback control unit 31 (S4). After receiving the information from the external portable terminal 1, the callback control unit 31 temporarily disconnects the line (S5). After the disconnection, the user authentication information inspection unit 315 inspects the user authentication information transmitted from the external portable terminal 1 and determines whether the callback system can be used (S6). If not available, the process ends.

If the callback system is available, the connection-desired LAN inspection unit 316 transmits the connection-desired LAN identification information received from the external portable terminal 1 to its own in-house LAN.
3 or another LAN (S
7). If it is its own in-house LAN 3, the public line communication processing unit 317 calls the outside portable terminal 1 and performs a callback process according to a conventional procedure (S9).

If the in-house LAN to be connected is not the in-house LAN 3 but another in-house LAN 4,
A check is made to determine whether the leased line can be used (S8). FIG.
8 is shown as a subroutine. The callback control unit 31 inquires of the inter-LAN communication control unit 32 via the in-house LAN 3 whether a callback connection using the dedicated line 5 between the in-house LAN 3 and the in-house LAN 4 to which the connection is desired is permitted ( S21).

The in-house LAN communication control unit 32, which has received the inquiry, detects the amount of communication data between the in-house LAN 3 and the in-house LAN 4 detected by the communication data amount detection unit 321 by the dedicated line availability determination unit 323 (S22). Then, the threshold value is compared with the threshold value recorded in the threshold value storage unit 322 (S23). If the comparison result is equal to or less than the threshold value, it is determined that the callback connection using the leased line 5 is permitted, and FIG.
To S9. If the comparison result exceeds the threshold value, it is determined that the callback connection using the dedicated line 5 is not permitted, and the process proceeds to S10 in FIG.

Returning to FIG. 9, when a callback connection using the leased line 5 is recognized, the callback control unit 31 calls the outside portable terminal 1 by the public line communication processing unit 317, and performs a call in a conventional procedure. Perform back processing (S1
4). After the connection is established by the callback, the external mobile terminal 1 is connected to the callback control unit 31, the in-house LAN 3, and the in-house L.
It accesses the in-house LAN 4 via the inter-AN communication control unit 32, the dedicated line 5, and the in-house LAN communication control unit 42.

If the callback connection using the dedicated line 5 is not recognized, the callback control unit 31
Through the AN3, the in-house LAN communication control unit 32, the dedicated line 5, the in-house LAN communication control unit 42, and the in-house in-house LAN 4,
It requests the callback control unit 41 to make a callback to the external portable terminal 1 (S10). The callback control unit 41 that has received the request uses the public line communication processing unit 417 to call the external portable terminal 1 and perform a callback process (S1).
1).

After the connection is established by the callback, the external portable terminal 1 transmits the internal LA via the callback control unit 41.
Access N4 directly and do not use in-house dedicated line 5. After establishing the line (S12), the external portable terminal 1 performs actual work such as downloading and uploading data (S13),
After the work is completed, the line is disconnected (S14).

The operation of the embodiment of the present invention has been described above in detail with reference to the drawings. However, the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention.

[0040]

As described above, according to the present invention, the amount of communication data on the in-house dedicated line is detected, and the value is used to call back from the facility closest to the external portable terminal using the dedicated line. By deciding whether to call back from the equipment directly connected to the LAN you want to connect to without using a dedicated line, there is a possibility that the economic benefits of using a dedicated line can be obtained. On the other hand, it is possible to prevent the problem that the communication load of the dedicated line in the company increases and the communication delay occurs.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of first and second embodiments of the present invention.

FIG. 2 is a block diagram showing a configuration of an external portable terminal according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a callback control unit according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of an in-house LAN communication control unit according to the first and second embodiments of the present invention.

FIG. 5 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 6 is a flowchart of a subroutine showing an operation of step S8 in FIG. 5;

FIG. 7 is a block diagram showing a configuration of an external portable terminal according to a second embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a callback control unit according to the second embodiment of the present invention.

FIG. 9 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 10 is a flowchart of a subroutine showing an operation of step S8 in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Outside portable terminal 11 ... Current position specification part 12 ... LAN-access point correspondence table storage part 13 ... Access point specification part 14 ... Communication processing part 15 ... Current position specification part 16 ... Location-access point correspondence table storage part 17 ... Access point specifying unit 18 Communication processing unit 2 Public line 3 (4) Internal LAN 31 (41) Callback control unit 311 (411) User authentication information inspection unit 312 (412) LAN location storage unit 313 (413)… LAN specifying unit nearest to external portable terminal 314 (414)… Public line communication processing unit 315 (415)… User authentication information inspection unit 316 (416)… Connection desired LAN inspection unit 317 (417)… Public line communication Processing unit 32 (42) ... In-house LAN communication control unit 321 (421) ... Communication data amount detection unit 322 (422) ... Threshold value storage unit 323 (423) ... Dedicated line use availability determination unit 33 (43) ... In-house computer 5 ... In-house dedicated line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 11/00 302 F-term (Reference) 5K030 GA13 HC02 HC13 HC14 HD06 JL07 LB02 5K033 AA04 CB01 CB06 CB08 CC01 DA06 DB12 DB14 5K051 AA05 BB02 CC01 CC07 CC08 DD03 DD07 DD13 DD15 EE01 FF02 FF16 GG02 HH16 HH17 JJ04 5K101 KK02 LL01 LL05 LL12 MM06 RR05 RR15 SS07

Claims (5)

[Claims] When a callback request is made from an external portable terminal to an internal LAN (local area network) for connection, an access point directly connected to the internal LAN to which connection is desired and a LAN closest to the external portable terminal are connected. When the directly connected access point is different, the data traffic of an internal leased line connecting the in-house LAN to which the connection is desired and the nearest LAN of the external portable terminal is detected, and the callback is performed based on the detected traffic value. A callback processing method for determining whether or not to use the in-house dedicated line at the time of connection. 2. A communication data amount detection unit for detecting a communication data amount of the company dedicated line at a connection portion between a plurality of company LANs connected by the company dedicated line, and a comparison target with the communication data amount. A threshold recording unit that records a predetermined threshold, and a dedicated line availability determining unit that determines availability of the in-house dedicated line by comparing the communication data amount with the threshold. If the data traffic is below the threshold, use the in-house private line during callback connection, and if the data traffic exceeds the threshold, use the in-house private line during callback connection 2. The method according to claim 1, wherein
The callback processing method described. 3. The in-house LAN from the outside portable terminal.
2. The callback according to claim 1, wherein, when making a callback request for connection to the external mobile terminal, an in-house LAN desired to be connected is specified by activating an application program installed in the external portable terminal. Processing method. 4. The in-house LAN from the outside portable terminal.
When making a callback request for the purpose of connecting to the external LAN, the location information of the external portable terminal specified from the user authentication information and the information of the base station and the like to the callback control unit directly connected to the in-house LAN. 2. The callback processing method according to claim 1, wherein 5. The in-house LAN from the outside portable terminal.
When making a callback request for the purpose of connecting to the in-house LAN, transmitting the user authentication information and the information for specifying the in-house LAN to which the connection is desired to the callback control unit directly connected to the in-house LAN. 2. The callback processing method according to claim 1, wherein: