JPH03250940A - Communication connection system - Google Patents

Abstract

PURPOSE:To eliminate the need for recognizing an address of a communication opposite party by registering plural host addresses in advance to a terminal equipment, sending a connection request to each of the addresses sequentially and registering a caller address into the terminal equipment as a host address when connection acknowledge is received. CONSTITUTION:Plural host addresses for communication by a host address initial registration means 11 are registered in a terminal equipment 10 in advance and a host address selection means 12 receives one by one addresses by a host address selection means 12 and a connection request transmission means 13 sends a connection request 300. A communication controller 200 compares whether or not a caller address 202 of the connection request 300 received by a connection request reception means 21 is registered or not in the communication controller 20 by using an address comparison means 22 and a connection acknowledge transmission means 24 sends a connection acknowledge 400 from the communication controller 20 with respect to the registered connection request 300. The terminal equipment 10 registers the caller address 200 into the terminal equipment 10 as a host address by using a host address registration means 16 based on the connection acknowledge 400 received by a connection acknowledge reception means 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication connection method between a terminal and a host computer in a data communication system.

[Conventional technology]

Conventionally, this woodcutter's communication connection method required the terminal to register the host address of the host computer or communication control device that actually communicates from the beginning, and the host address was registered individually for each terminal. Or, if only one communication control device was connected to the host computer, address comparison was not performed within the communication control device, but instead was performed by communication software on the host computer side.

[Problem to be solved by the invention]

In the conventional communication connection method described above, it is necessary to register the host address of the host computer or communication control device that actually communicates with each terminal, and the communication information on the terminal side is different from each other. System management was extremely troublesome, and when there was only one communication control device connected to the host computer, the address ratio *'t had to be done on the host computer side, increasing the load on the host computer. In addition, one communication control device must communicate with all the terminals connected, which has the disadvantage of reducing communication response due to overshooting of the communication control device.

[Means to solve the problem]

The present invention provides host address initial registration means for registering a plurality of host addresses for communication with a terminal, host address selection means for sequentially bringing the plurality of host addresses registered in the terminal one by one by the host address initial registration means, connection request sending means for sending a connection request from a terminal using a host address brought by the host address selection means; connection request receiving means for receiving a connection request sent from the terminal using the connection request sending means in a communication control device; Address comparing means for comparing whether the source address of the data received by the request receiving means is registered in advance in the communication control device; connection request whose source address is compared by the address comparing means and registered in advance in the communication control device; A connection confirmation sending means for sending a connection confirmation from the communication control device to the communication control device; and a connection confirmation sending means for sending a connection confirmation from the communication control device to a connection request whose source address is compared by the address comparison means and whose source address is not registered in advance in the communication control device, and sending a disconnection request from the communication control device. a disconnection request sending means for receiving a disconnection request sent by the disconnection request sending means from the communication control device at the terminal, and activating a host address selection means to fetch the next host address and send a connection request; connection confirmation receiving means for receiving a connection confirmation transmitted by the connection confirmation transmission means from the communication control device at the terminal; and host address registration for registering a source address as a host address in the terminal from data received by the connection confirmation reception means. and communication means for communicating with the host computer via the communication control device using the host address registered by the host address registration means.

[Fu example]

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is an overall configuration diagram of the present invention.

Referring to FIG. 1, one embodiment of the present invention includes a terminal 10,
Communication control device 20, host computer 30, host address initial registration means 11 for registering multiple host addresses at the terminal, host address selection means 12 for bringing one by one in the order registered in the terminal at the terminal, connection request at the terminal connection request transmitting means 13 for transmitting a disconnection request, disconnection request receiving means 14 for receiving a disconnection request at the terminal, connection confirmation receiving means 15 for receiving all connection confirmations at the terminal, source address from the connection confirmation received by the connection confirmation reception means at the terminal. host address ringing means 16 for registering a host address in the terminal as a host address; communication means 17 for communicating with the host computer via the communication control device in the terminal; connection request receiving means 21 for receiving a connection request by the communication control device; An address comparing means 22 compares whether a connection request received by a connection request receiving means in a control device is an address registered in the communication control device, and the communication control device disconnects a connection request for an address that is not registered in the communication control device. disconnection request transmitting means 23 for transmitting the request;
A connection confirmation sending means 24 for transmitting a connection confirmation in response to a connection request for an address registered in the communication control device in the communication control device; a communication means 25 for communicating between the terminal and the host converter in the communication control device; It is composed of a communication means 31 that is a host converter and communicates with a terminal via a communication control device.

FIG. 2 shows the data format used in the present invention.

In FIG. 2, data 200 is a destination address 201
, a source address 202, a data 1 identifier section 203, and a data section 204.

FIG. 3 shows the data format of a connection request used in the present invention. In FIG. 3, a connection request 300 includes a host address 301 as a destination address, a terminal address 302 as a source address, a connection request 303 as a data identifier, and a data section 304.

FIG. 4 shows the data format of connection confirmation used in the present invention. In FIG. 4, the connection confirmation 400 includes a terminal address 401 as a destination address, a host address 402 as a source address, a connection confirmation V 403 as a data identifier, and a data section 404. FIG. 5 shows the data format of a disconnection request used in the present invention. In FIG. 5, a disconnection request 500, a terminal address 501 as a destination address, a host address 502 as a source address, and a disconnection request as a data identifier. 503 and a data section 504.

Next, the operation of the present invention will be explained with reference to the drawings.

First, the host address initial registration means 11 is stored in the terminal 10 in advance.
The terminal 10 registers a plurality of host addresses to communicate with by using the host address initial registration means 11. Next, the terminal 10 uses the host address selection means 12 to sequentially bring the plurality of host I addresses registered in the terminal 10 one by one using the host address initial registration means 11. Then, the connection request sending means 13 selects the terminal 10 using the host address brought by the host address selection means 12.
The connection request 300 sent from the terminal 10 using the connection request sending means 13 is received by the connection request receiving means 21 in the communication control device 20. The communication control device 20 is a connection request receiving means. The address comparing means 22 compares whether the source address 202 of the connection request 300 received by 21 is registered in the communication control device 20 in advance. The connection confirmation sending means 24 sends a connection confirmation 400 from the communication control device 20 to the connection request 300 registered in the communication control device 20, and the address comparison device 22 compares the connection confirmation 400 and determines that the source address 202 is registered in the communication control device 20 in advance. In response to a connection request 300 that is not registered, a disconnection request 500 is transmitted from the communication control device 20 by the disconnection request transmitting means 23. Disconnection request receiving means 14
After receiving the disconnection request 500, the disconnection request receiving means 14 of the terminal 10 sends a connection request 3 at the next host address.
The activated host address selection means 12 activates the host address selection means 12 to send 00. After the activated host address selection means 12 brings the next host address, the connection request transmission means 13
tl - starts and sends the next connection request 300, thereafter repeats until no disconnection request 500 is returned from the communication control device 20, while the connection confirmation 400 sent by the connection confirmation sending means 24 from the communication control device 20 is received by the connection confirmation receiving means 15 in the terminal 10.The terminal 10 registers the source address 202r from the connection confirmation 400 received by the connection confirmation receiving means 15 into the terminal 10 using the host address registration means 16. A communication connection method is realized by communicating with the host computer 30 via the communication control device 1120 using the host address registered by the host address registration means 16.

〔Effect of the invention〕

That's all UE! As described in A, in the present invention, a plurality of host addresses are registered in advance in a terminal, a connection request is sequentially sent to each of them, and the communication control device uses the address comparison means to compare the received connection request as the source address. It compares whether the entered terminal address is registered in the communication control device in advance, and sends a connection confirmation for connection requests with a registered terminal address, and sends a connection confirmation for connection requests with no terminal address registered. sends a disconnect request,
When the terminal receives a disconnection request, it fetches the next host address and sends the next connection request.After that, it sends connection requests until no disconnection requests are returned.Also, when it receives a connection confirmation, it sends the next connection request. From the connection confirmation, the source address is registered in the terminal as a host address, and thereafter, the terminal uses the registered host address to communicate with the host computer via the communication control device, thereby achieving the following effects.

■ Even if there are multiple communication control devices in the host computer, it is easy to manage the communication information of the terminals because the terminals do not need to be aware of the addresses of the parties with which they communicate.

■ Large-scale communication systems can be constructed even if there is a limit to the number of terminals that can communicate with one communication control device.

■ Address comparison of data flowing through the line can be performed within the communication control device, reducing the load on the host computer.

■ Since multiple communication control devices can be used, there will be no drop in communication response due to overcapacity of the communication control device.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a data format used in the present invention, FIG. 3 is a diagram showing a data format of a connection request of the present invention, and FIG. 5 is a diagram showing the data format of connection confirmation according to the present invention, and FIG. 5 is a diagram showing the data format of disconnection request according to the present invention. 10... Terminal, 11... Host address initial registration means, 12... Host address selection means, 13... Connection request transmitting means, 14... Disconnection request receiving means, 15.
... connection confirmation receiving means, 16 ... host address registration means, 17 ... communication means, 20 ... communication control device,
21... Connection request receiving means, 22... Address comparing means, 23... Disconnection request transmitting means, 24... Connection confirmation transmitting means, 25... Communication means, 30... Host computer, 31 ... Communication means, 200 ... Data, 201 ... Destination address, 202 ... Source address, 203 ... Data identifier, 204 ... Data section, 300 ... Connection request, 301 ... host address, 302 ... terminal address, 303 ... connection request, 304 ... data section, 400 ... connection confirmation, 4
01...Terminal address, 402...Host address, 403...Connection confirmation, 404...Data section, 50
0...Disconnection request, 501...Terminal address, 502
...Host address, 503...Disconnection request, 504
...Data department.

Claims (1)

[Scope of Claims] A plurality of communication control devices are connected to a host computer, and the host computer has communication means for communicating with a terminal via the communication control devices, and all data flowing on the line has a source information. address and destination address are added, each communication control device connected to the host computer has a unique address, and the communication control device can compare whether the source address is registered in advance in the communication control device. There is a limit to the number of addresses that can be registered in the communication control device, and the connection is completed when the host computer returns a connection confirmation in response to a connection request from the terminal, and if the connection cannot be established, the connection can be refused by returning a disconnection request. In such a communication connection method, there is a host address initial registration means that registers multiple host addresses for communication with the terminal, and a host address that sequentially brings multiple host addresses registered on the terminal one by one by the host address initial registration means. a selection means, a connection request transmission means for transmitting a connection request from a terminal using the host address brought by the host address selection means, and a connection request reception for receiving a connection request transmitted from the terminal using the connection request transmission means by a communication control device. means, address comparing means for comparing whether the source address of the data received by the connection request receiving means is registered in advance in the communication control device; A connection confirmation sending means that sends a connection confirmation from the communication control device in response to a connection request that is present, and a connection confirmation sending means that sends a connection confirmation from the communication control device in response to a connection request that is compared by the address comparison means, and disconnects from the communication control device in response to a connection request whose source address is not registered in the communication control device in advance. disconnection request sending means for sending the request;
disconnection request receiving means for receiving a disconnection request transmitted by the disconnection request transmitting means from the communication control device at the terminal, bringing the next host address and activating the host address selection means for transmitting the connection request, from the communication control device; connection confirmation receiving means that receives the connection confirmation transmitted by the connection confirmation terminal; host address registration means that registers the source address as a host address in the terminal from the data received by the connection confirmation reception means; and host address registration means. A communication connection method characterized by having communication means for communicating with a host computer via a communication control device using a registered host address.