JPH0397347A - File transfer device - Google Patents

Abstract

PURPOSE:To connect directly an exchange and a general-purpose computer including a work station by providing an SCSI(small computer system) interface to a magnetic tape device control circuit of an exchange and providing a device simulating the magnetic tape device to a side of a general-purpose computer including a work station. CONSTITUTION:A work station 4 connecting to an exchange comprising an exchange control section and a magnetic tape control circuit 3 through an SCSI interface and a LAN 4 are connected to a general-purpose computer 5. An exchange file generated by the general purpose computer 5 is transferred to the work station 4 via the LAN. The exchange file transferred to the work station file is transferred with the magnetic tape control circuit 3 through the SCSI interface with a magnetic tape device start request from an exchange control section 2 to the magnetic tape control circuit 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to data transfer using SCSI (Small Computer System).

[Conventional technology]

Traditional switching systems use magnetic tapes to transfer files to and output files from the switch, and in order to process them on general-purpose computers including workstations, the magnetic tape must be read and processed again. There is.

[Problem to be solved by the invention]

In the above conventional technology, since there is only an interface between the exchange and a general-purpose computer including a workstation via a medium such as a magnetic tape or a floppy disk, it is difficult to create an exchange file on the general-purpose computer, transfer the file to the exchange, A series of processes such as collecting switchboard data were not automated and had to be done manually.

The present invention aims to enable direct connection between an exchange and a general-purpose computer including a workstation, and to automate the series of processes described above.

[Means to solve the problem]

In order to achieve the above purpose, by providing an SCS I interface in the magnetic tape device control circuit of the exchange and providing a device that simulates a magnetic tape device on the side of the general-purpose computer including the workstation, the general-purpose computer including the exchange and the workstation can be directly connected.

[Effect]

In response to a magnetic tape operation request from the exchange, the magnetic tape device control circuit on the exchange side converts the request into an SCSI interface and accesses a general-purpose computer including a workstation. Further, on the general-purpose computer side, magnetic tape operation is simulated according to the magnetic tape operation instruction received via SCSI. This allows the exchange and general-purpose computers, including workstations, to be directly connected via the magnetic tape interface without changing the procedure for accessing the magnetic tape from the exchange.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows a switch 1 consisting of a switch control section 2 and a magnetic tape device control circuit 3, a workstation 4 connected to the magnetic tape device control circuit 3, and an LA via an SCS I interface.
A general-purpose computer 5 is connected to the workstation 4 via N.

The exchange file created by the general-purpose computer 5 is transferred to the workstation 4 via the LAN. The switch file transferred to the workstation 4 is transferred to the switch control unit 2.
In response to a magnetic tape device activation request to the magnetic tape device control circuit 3 from the magnetic tape device control circuit 3, file transfer is performed between the magnetic tape device control circuit 3 and the workstation 4 via the SCSI interface. The data in the exchange controller 2 is also executed in the same manner as above, and the exchange data transferred to the workstation 4 is transferred to the general-purpose computer 5 via the LAN.

Next, the magnetic tape device control circuit 3 and the workstation 4
An outline of the operation during this period is shown in Figs. 2, 3, and 4. The magnetic tape device control circuit 3 and workstation 4 are SCS
This is an I interface, and after the selection phase, control is performed in the following three phases. One is
The second phase is a command phase in which a request from the exchange control unit 2 is directed to the workstation 4. The second phase is a data transfer out phase in which data is transferred from the exchange control unit 2 to the workstation 4. The third phase is a command phase in which data is transferred from the exchange control unit 2 to the workstation 4. It consists of three phases: a data reception phase and a data transfer in phase in which an operation result in response to a request instruction is received from the workstation 4. S of each phase
The CSI interface consists of phases shown in FIG.

FIG. 2 shows control-related operations other than reading and writing from the exchange control unit 2 to the magnetic tape (for example, instructions to rewind the magnetic tape).

An outline of the operation will be explained below.

The magnetic tape device control circuit 3 is activated by a control system instruction from the exchange control section, and the magnetic tape device control circuit 3 then issues operation instructions to the workstation 4 through the SCSI interface.

The SCS I interface consists of three phases. First, the selection phase connects the magnetic tape device control circuit 3 and the workstation 4, and the command phase transfers requests from the exchange control unit 2 to the workstation 4. The result of the operation is transferred to the magnetic tape device control circuit 3 in the data transfer in phase.

The results transferred from the workstation 4 are reported by the magnetic tape device control circuit 3 to the exchange control unit as a report operation.

FIG. 3 shows the read operation from the exchange control section 2 to the magnetic tape. An outline of the operation will be explained below. The magnetic tape device control circuit 3 is activated by a read request from the exchange control unit 2, and then the magnetic tape device control circuit 3
As in the case of the control system described above, operation instructions are given through the workstation 4 and the SCSI interface. sc
The sr interface consists of four phases: the selection phase and command phase are the same as the control system, but then the data transfer in phase is used to transfer data from the workstation and report the operation results. Execute and switch control unit 2
transfer the received data to, report the operation results,
Read processing ends. FIG. 4 shows the write operation from the exchange control section 2 to the magnetic tape. An overview of the operation is explained below. The magnetic tape device control circuit is activated in response to a write request from the exchange control section 2, and then receives data from the exchange control section 2. After that, the magnetic tape device control circuit 3 is activated by the workstation as in the case of the control system. 4 and the SCS I interface to issue operational instructions. The SCSI interface consists of four phases, and the selection phase and command phase are the same as for the control system, but the subsequent data transfer to the workstation is the data transfer out phase, and the operation result is , executes the data transfer in-phase, reports the result to the exchange control unit, and completes the write process.

As explained above, with the present invention, it is possible to directly connect a switch and a general-purpose computer including a workstation without changing the control on the switch side. [Effects of the Invention] According to the present invention, a general-purpose computer including a switch and a workstation can be directly connected through a magnetic tape device interface without changing the conventional magnetic tape control on the switch side. What used to be controlled by the robot can now be directly controlled, simplifying work and improving efficiency.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention in which a switchboard and a workstation are connected, Fig. 2 is a schematic diagram of control system operation, Fig. 3 is a schematic diagram of read system operation, and Fig. 4 is a schematic diagram of write system operation. , FIG. 5 is an explanatory diagram showing the SCS I interface in each phase in FIGS. 2 to 4. DESCRIPTION OF SYMBOLS 1... Switching machine, 2... Switching machine control part, 3... Magnetic tape device control circuit, 4... Work station, 5... General-purpose computer. Akira 2nd / 8th Sekikata [Face' Nodezu J [Face' Tsumeju Noe's only younger brother 5 (4) Fuman Y7 Aze te"-! Transfer in 7 peas゜(C) te”-7 transfer γ out 71-s゛

Claims (1)

[Claims] 1. When connecting the switch and the magnetic tape device, use SCSI for this interface and use a workstation as the magnetic tape device, and connect the workstation or general-purpose computer without changing the magnetic tape device control procedure on the switch side. What is claimed is: 1. A file transfer device that enables direct transfer of a switch file created by a workstation to a switch via a magnetic tape device interface, and direct transfer of switch data to a workstation via a magnetic tape device interface.