KR100271604B1 - Apparatus of frame relay access - Google Patents

Abstract

The present invention relates to a frame relay access device capable of supporting an input output control (IOC) protocol when a frame relay network is constructed as a high-speed information communication network, and provides a frame relay 1.2Kbps-T1 / E1. A frame relay access device capable of communicating between a host 6 of a computer center 4, a terminal of a small branch office 5, and an automatic machine 5 via a frame relay network 11 of the frame relay network 11, wherein the frame relay access device 9 includes: The flash memory 26 for the application of the processing section 1 for the acceptance of the IOC protocol using the V.35 and V.24 serial port I / O modules 20 and 21 of the input / output section 2) Frame relay access device, characterized in that consisting of a flash memory 27 for device configuration.

Description

Frame Relay Access Device

The present invention relates to a frame relay access device capable of supporting an input output control (IOC) protocol when a frame relay network is constructed as a high-speed information communication network.

In recent years, as a standard for guaranteeing the transmission and integrity of data in a packet switched network, frame relay has become the most widely used standard for the improved version of X.25. The original frame relay access device (or FRAD) supports SNA / SDLC (System Network Architecture / Synchronous Data Link Control), LAN (Local Area Nerwork), voice / broadcast data, and does not support the data of IOC protocol at all. It is not.

However, some banks are currently using the IOC protocol to communicate with branch processors (BPs), which are branch servers, and financial terminals and automats. Therefore, the frame relay access device supports the IOC protocol in designing the construction of the frame relay network, which is a high-speed information communication network, and requires an auxiliary means for accommodating existing resources without replacing or redeveloping unnecessary systems. It became.

On the other hand, the IOC protocol was an asynchronous protocol for data transmission and reception between the server and the client, unlike the general asynchronous protocol has the following advantages by introducing the concept of a synchronous protocol.

First, each byte of data is composed of asynchronous data format. First check is performed by using parity check and frame unit is checked by Block Check Charactor (BCC) to guarantee reliable data. Second, concept of synchronous protocol The concept of parity is applied to distinguish between plaque and general data.

Accordingly, the communication equipment using the IOC protocol is divided into a multi-branch controller (or MBC) and an extended branch controller (or EBC) according to the location of the branch processor. Can be used to communicate with the branch processor.

In other words, if the branch processor in the branch is located, use the expansion branch controller. In the case of a small branch (for example, branch office, 365 corner, etc.), the branch processor is located in the center or regional center. One is in charge of the operation of several branch offices and uses multi-branch controllers as communication equipment.

In the construction of the frame relay network, when the branch processor has a branch office, since the branch processor and the terminal device are located at the same place, the IOC protocol support in the frame relay access device is unnecessary.

However, when the branch processor is located at the center, the branch processor and the financial terminal device (including the automatic machine) are remote from each other. There was a problem in use that the communication of the device was impossible.

The present invention has been invented to solve the communication defects of the conventional frame relay access apparatus described above, and the conventional frame relay access apparatus can support the IOC protocol, and thus uses the V.24 module of the frame relay access apparatus. By adding a software module to accommodate the IOC protocol, it is possible to effectively communicate between the branch processor and the financial terminal during the construction of the frame relay network, thus improving the scalability of the supporting protocols and improving existing bank assets and frames. The object of the present invention is to provide a frame relay access device that is capable of constructing a frame relay network as a high-speed information communication network of a bank while accepting the advantages of a relay network.

1 is an operation diagram for explaining a frame relay network using a frame relay access device according to an embodiment of the present invention.

2 is a block diagram showing in detail the frame relay access apparatus of the present invention.

3 is a flowchart illustrating that the IOC protocol is supported in the frame relay access apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

1: processing section 2: input / output section

3: power section 4: regional center

5: small branch 8: BP

9,12: FRAD 120: Frame Relay Switch

The frame relay access device of the present invention for achieving the above object is, through the frame relay network 11 of the frame relay 1.2Kbps-T1 / E1, the host 6 and the small branch office (5) of the computer center or regional center (4) In a frame relay access device capable of communicating between a terminal and an automatic machine (5), the V.35 and V.24 serial port input / output modules (20) of the input / output section (2) in the frame relay access device (9:12) 21, the application flash memory 26 and the device configuration flash memory 27 of the processing section 1 for the IOC protocol acceptance.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an operation diagram for explaining a frame relay network using a frame relay access apparatus according to an embodiment of the present invention. The frame relay access apparatus of the present invention can be used in a frame relay network in which communication between a center and a remote area is performed. Here, as an example, we will talk about bank-to-bank communication and can be easily used everywhere else.

That is, in the frame relay network 11 of the frame relay 1.2 Kbps-T1 / E1, communication between the computer center or the regional center 4 and each of the small branch offices 5 becomes possible.

In the computer center or regional center 4, the host 6, the communication controller unit (referred to as 7: or CCU), the branch processor (8; BP), the IOC input and output at the speed of 1.2K-19.2Kbps RS 232C V.24 And a frame relay access device (FRAD) 9 and a frame relay switch 10 of input and output V.35.

In the small branch office 5, the terminal 14 and the transaction terminal 15 through the frame relay access device 12 and the MBC 13 of the input and output RS 232C V.24 and the input and output V.35 at the IOC 1.2K-19.2Kbps speed. ) And an automatic teller machine (16).

That is, in order to support communication of the IOC protocol between the frame relay network 11, the branch processor 8, the BP 9, the MBC 13, and the terminal, as shown in FIG. The V.35 and V.24 serial port I / O modules 20 and 21 of the I / O section 2 are required.

The V.35 serial port input / output module 20 is used for communication with the frame relay switch 10 for connecting the frame relay network 11, and the V.24 serial port input / output module 21 is a BP (8). It is used for the communication of the IOC protocol between and FRAD (9) and between FRAD (12) and MBC (13). There is also an Ethernet module 19, a voice input / output module 22, an ISDN interface input / output module 23, and the like.

Therefore, the present invention can support the IOC protocol even in a conventional frame relay access device, so that a frame is additionally added by using a V.24 module 21 of the frame relay access device (9:12). Even when establishing the relay network (11), communication between the BP (8) and the financial terminal (14-16) can be effectively carried out by investing a small amount of expense and airborne, so that the support protocol can be expanded, and existing bank assets and frame relay networks ( 11) It is possible to build a frame relay network as a high-speed information communication network of a bank while accepting the advantages of 11).

On the other hand, the general specification of the IOC protocol is based on the asynchronous transmission method, the baud rate 2400-19200 bps, 8 bits of data length, and asynchronous communication in which the parity, start bit and stop bit have one bit. The transmission data structure (11 bits) is ST (start bit) indicating the start of data, B0-B7 (data bit) as RAW data, PA (parity bit) as a bit for distinguishing between error detection and flag and general data. And SP (stop bit) indicating the end of data.

The data block format is F (flag), source or destination address used to distinguish it from normal data, A (address), C (command), D0-n (data), and check sum (error) for error detection. It is in the order of BCC (binary check character).

In the command of the data block format, the command from FRAD to the terminal includes: POL; Polling the device, RD; Transmit instruction for the device, WT; Receive instruction for the device, WTD; Indicates that the character following the move is data, ACK; Indicating that the data received from the device is normal and instructing the device to respond after the data transmission, SS; Sensing device status, RST; Instructs the device to return to the initial state. If the device is in output operation, it indicates to return after the operation is completed.

The command from the terminal to the FRAD is RDD; A response to the RD command indicating that the character connected to the data is SS, 00; A response to the POL, SS, and ACK commands, a data reception state for the WT command, and a response when the data reception for the WTD command is normal; Response when the device requests transmission, SR 02; Used when rejecting command reception due to an error during execution of a previously received command, SR (04); An error occurred while the device was receiving the WTD command.

The simple software architecture of the frame relay access device 9: 12 for supporting the above-described IOC protocol includes an IOC protocol conversion module and a frame relay protocol conversion module interconnected to the frame relay at the top and the bottom thereof.

The architecture allows FRAD to convert the IOC protocol into a frame relay or vice versa, so that even if the branch processor and the terminal are remote, the communication can be performed regardless of the location. .

As shown in FIG. 2, the V.35 and V.24 serial port I / O modules 20 and 21 of the I / O section 2 in the FRAD 9: 12 are required. The other modules are also mounted in the slots S1 and S4-S7 while the slots S2 and S3 are mounted (where the order of the slot numbers is irrelevant).

The processing center 1 includes an expansion flash memory 24, an expansion DRAM 30, two main memories 25, an application flash memory 26 for storing software supporting the IOC protocol, and device configuration. It consists of a flash memory 27, a bootable EPROM 28 and a microprocessor 29, and the power section 3 consists of an AC / DC converter 17 and a power selection switch 18 of 120 / 220V.

Through the structure of the frame relay access device (9:12) as described above, the transaction data flow is enabled by supporting the IOC protocol in the frame relay access device (9:12), for example, the transaction data flow in a typical banknote Takes the following steps: That is, the financial terminal transmits a transaction summary, and the transmitted data is received to the host through the CCU of the center via a network.

Then, after the transaction processing in the host, the transaction processing data is again received by the financial terminal via the network via the CCU.

Based on the above data flow sequence, the description of the support of the IOC protocol using the frame relay access device of the present invention describes the data flow with reference to FIGS. 1 to 3.

When the transaction data of the IOC protocol is uploaded from the terminal and the automatic machine 14-16 in the small branch office 5, the input / output RS 232C V at the rate of 1.2K-19.2Kbps at the IOC 1.2K-19.2Kbps while passing through the MBC 13 .24 and I / O V.35 convert IOC protocol to Frame Relay protocol.

Then, the transaction request data transmitted to the computer center or the regional center 4 via the frame release network 11 is input / output RS 232C V.24 and input / output at IOC 1.2K-19.2 Kbps through the frame relay switch 10. The IOC protocol received through V.35 is converted into a frame relay protocol and transmitted to the protocol relay network 11 through input / output V.35.

Therefore, the transaction request data is converted into the IOC protocol, processed by the BP 8, and then converted into the SNA / SDLC protocol, and transmitted to the host 6 through the CCU 7.

Meanwhile, the received transaction request data is processed at the host 6 of the computer center or the regional center 4, and the transaction result data, which is SNA / SDLC data, is transmitted to the BP 8 via the CCU 7 again.

The host data transmitted to the BP 8 is converted into an IOC protocol, and is converted into a frame relay protocol through a FRAD 9 of an input RS 232C V.24 and an output V.35, which is a frame relay switch 10. It is transmitted to the frame relay network 11 through.

Since the FRAD 12 of the small branch office 5 supports the IOC protocol through the frame relay network 11, the transaction result is output to the terminal and the automatic machine 14-16 via the MBC 13.

In this way, the frame relay access device of the present invention improves the scalability of the supporting protocol and allows the construction of the frame relay network as a high-speed information communication network of the bank while accepting the advantages of the existing bank assets and the frame relay network. have.

As described above, according to the present invention, the frame relay access device can support the IOC protocol. Thus, when the frame relay network is constructed by using a V.24 module of the frame relay access device, a software module for accommodating the IOC protocol is added. It is possible to effectively communicate between branch processor and financial terminal during the low cost and air cost. Therefore, it is possible to improve the scalability of supporting protocol and to take advantage of existing bank asset and frame relay network while maintaining the advantages of existing bank asset and frame relay network. It is possible to provide a frame relay access device that is capable of constructing a network.

Claims (2)

Frame relay access through the frame relay network 11 of 1.2Kbps-T1 / E1 for communication between the host 6 of the computer center or the regional center 4 and the terminal and the automatic machine 5 of the small branch office 5 In the apparatus, a processing center (1) for accepting an IOC protocol using V.35 and V.24 serial port I / O modules (20, 21) of an input / output section (2) in a frame relay access device (9:12). Frame relay access device, characterized in that consisting of a flash memory (26) for application and a flash memory (27) for device configuration. The frame according to claim 1, wherein the frame relay access device (9) is provided between the BP (8) and the frame relay switch (10), and the frame relay access device (12) is provided in front of the MBC (13). Relay access device.