JP2529011B2 - Local access method for transmission equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] A local access method of a transmission device that allows access to and control of a plurality of controlled transmission devices centrally controlled by a system control device at an installation site. When the control transmission device is connected to the system control device via the communication line of the specific interface,
A plurality of transmissions provided with a channel bank controller for managing the setting / collection of data for a unit for the purpose of allowing access to any one transmission device from a local terminal having an interface different from the specific interface. In a transmission device control system, which comprises a device and a system controller connected to the channel bank controller via a communication line of a specific interface to centrally control the transmission device, a local terminal having an interface different from the specific interface is used. A local access method for accessing a transmission device to control the unit,
The level of the signal is converted between the specific interface and the local terminal interface, the control signal from the local terminal is sent to the channel bank controller, and the data from each unit collected by the channel bank controller is sent to the local terminal. Each transmission device is provided with an interface unit having a level conversion unit for enabling transmission and a microprocessor for notifying the channel bank controller of a status signal indicating that the local terminal is in use when being accessed from the local terminal. , The local terminal is connected to the channel bank controller via the interface unit to locally access the transmission device, and during the local access, the channel bank controller is a local terminal to the system controller. Through being in use It is configured to.

[Industrial applications]

The present invention relates to a local access method of a transmission device that enables access to and control of any one of a plurality of controlled devices centrally controlled by a system control device at an installation site.

In recent transmission equipment such as subscriber PCM multiplexers, a channel board for accommodating subscriber lines and MLDX for multiplexing / demultiplexing
Units, provisioning that performs initial settings such as allowable error rate, frame pattern, alarm display content, etc. for each unit that constitutes a channel bank such as LIU unit that interfaces with multiplex transmission line, provisioning monitor that monitors these setting data Control of transmission equipment such as inventory monitor that monitors attribute data such as type code of unit and unit is sent to the microprocessor of each unit by the microprocessor of the channel bank controller and processed by the microprocessor based on this data. , Is supposed to collect data. Then, these controls are performed by serially accessing the channel bank controllers of a plurality of transmission devices from one control device installed at a remote place called a system control device.

The present invention relates to a transmission device control system in which provisioning of units of each transmission device and an inventory monitor are centrally controlled by remote control, so that control access to each unit can be performed even in front of the device. It relates to an access method.

[Conventional technology]

 FIG. 2 is a diagram showing a conventional transmission device control system.

Generally, a plurality of subscriber transmission devices 1-1 that are distributed and installed.
1 to N are multi-connected to the system control device 3 installed at a remote place by the communication circuit 2, and the operator individually accesses each transmission device from the control terminal 31 of the system control device 3 and is called provisioning. Data unique to each of the units 11-1 to 11-n of each transmission device is set, and attribute information of each unit called an inventory monitor is collected.

A unique system ID is set for each of the transmission devices 1-1 to 1-N, and the controlled protocol is specified by specifying the ID for the communication protocol between the system control device 3 and each transmission device. Done by

Transmission and reception of commands and data between the control terminal 31 and the transmission device are performed by serial data transfer. That is, since a personal computer is usually used for this control device, the control terminal 31 sends and receives control data via the RS232C level interface. However, since this RS232C interface can be used only for short-distance communication between the one-to-one devices, the level conversion unit 32 of the system control device 3 sets the level to that of the RS485 interface capable of one-to-many long-distance transmission. After conversion, it is sent to the communication circuit 2.

Each of the transmission devices 1-1 to 1-N has a level conversion unit 1 of the RS485 interface of the respective channel bank controller 12.
2a receives this control data and converts it to TTL level,
Send to microprocessor 12b, microprocessor 12b
Analyzes this command and executes the provision / inventory control command for the plurality of units 11-1 to 11-n which the own channel bank controller is responsible for.

[Problems to be Solved by the Invention]

In the above-mentioned conventional access method, even when the unit of the transmission device is replaced for maintenance of the device, etc., provisioning / inventory monitoring using the system control device cannot be performed immediately before the device at the maintenance site. Had to go to a system controller installed in a remote place to set data and monitor.

However, in actual system operation, if the access for the above is possible at the site where maintenance or system turn-up is performed, that is, at the front of the transmission device, the operator does not need to go to the installation location of the system control device It is convenient.

The present invention has been made in view of the above problems, and when a plurality of controlled transmission devices are connected to a system control device at a remote place via a communication circuit of a specific interface, any one transmission device can be used. The purpose is to enable access from a local terminal having an interface different from the specific interface.

[Means for solving the problem]

FIG. 1 is a block diagram showing a local access system of a transmission device of the present invention.

The above problem is caused by a plurality of transmission devices 1-1 to 1-N provided with a channel bank controller 12 for managing data setting / collection for the units 11-1 to 11-n, as shown in FIG. And the channel bank controller 12
In a transmission device control system comprising a system control device 3 which is connected via a communication line 2 of a specific interface to centrally control the transmission devices 1-1 to 1-N, from a local terminal 4 having an interface different from the specific interface. There is a local access method for controlling any of the units 11-1 to 11-n by accessing an arbitrary transmission device 1-1, and converting the signal level between the specific interface and the local terminal interface. The control signal from the local terminal 4 is sent to the channel bank controller 12, and each unit 11-1 which the channel bank controller 12 collects.
A level conversion unit 13b that enables transmission of data from 11-n to the local terminal 4 and, when being accessed by the local terminal 4, notifies the channel bank controller 12 of a status signal indicating that the local terminal is in use. Interface unit 13 having a microprocessor 13c for
1-N, connects the local terminal 4 to the channel bank controller 12 through the interface unit 13 to locally access the transmission device 1-1, and controls the channel bank during the local access. The device 12 notifies the system control device 3 that the local terminal is being used, which is solved by the local access method of the transmission device of the present invention.

[Action]

By connecting the portable local terminal 4 having a signal input / output port of an interface (RS232C) level different from the communication line interface (RS485) level to the interface unit 13, the level conversion unit 13b inside the interface unit 13 is The signal level of the local terminal 4 is converted to the communication line interface level (RS485) of the channel bank controller 12 and transmitted to the channel bank controller, so that the local terminal 4 can access the channel bank controller in the same manner as when accessing from the system controller 3. It becomes possible to access the channel bank controller 12. Therefore, the desired transmission device 1-
On the front of 1, the provisioning and inventory monitoring become possible. Even if the local terminal 4 is accessing the transmission device from the system control device,
Since the channel bank controller notifies the fact based on the signal from the interface unit that the local terminal is in use, the system controller recognizes it and stops transmitting the control command to the channel bank controller. Therefore, the same transmission device is not controlled twice.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a configuration block diagram showing a main part of an embodiment of the present invention. The same reference numerals indicate the same objects throughout the drawings.

In the figure, 3 is a system control device, which comprises a personal computer 31 and a level conversion section 32, and is installed at a place apart from the installation place of the transmission device. The personal computer 31 sends out control data in RS232C level by various control commands instructed by the operator from the keyboard, and the level converter 32 converts this control data into RS485 level that can be communicated with the remote multiple device. It is sent to the communication line 2.

Reference numeral 1 is a plurality of subscriber system transmission devices, each of which includes a plurality of units 11-1 to 11-n and a set of channel bank controllers 1
2. Has an interface unit 13.

The unit 11 is, for example, a PCM converter that converts a voice signal or a data signal from a subscriber and sends it to a multiplexing unit (not shown). The unit is a channel board, and the subscribers accommodated by each are provisioned by setting parameter data in its variable portion. The transmission function corresponding to the characteristics of the line is set. Then, each unit stores attribute data (inventory) such as set data and type code in the ROM so that it can be monitored as needed. The channel bank controller 12 of each transmission device includes a level conversion unit 12a for converting a signal level between the communication line 2 of RS485 interface suitable for remote multi-end communication and the microprocessor 12b of TTL interface, and the level conversion unit. It has a CPU 12b that analyzes the reception control data from 12a and executes various controls for the unit.

Normally, with the above configuration, a specific transmission device is specified by a command from the system controller, and the channel bank controller individually accesses each unit within its own control range to perform provisioning and inventory monitoring, and the result is displayed in the system. Remote centralized control of transmitting to the control device is performed.

Next, in the present invention, the operator directly from the local terminal 4 which is a portable (laptop) computer,
The following interface unit 13 is newly added to allow access to each transmission device. The interface unit 13 has an interface connector 13a, a level converter 13b, a CPU 13c, and a ROM 13d. The interface connector 13a is a connector compatible with the RS232C serial interface, and can be used by the local terminal
A cable 41 forming the RS232C level serial communication line 5 with a portable (laptop) computer used as is connectable to and detachable from the computer. Level converter
13b is a level conversion unit 12a of the channel bank controller for commands and data transmitted and received from the local terminal 4 by RS232C.
Convert to RS485 level which is the input / output level of. Upon receiving the specific command from the local terminal 4, the microprocessor 13c puts it in a response message to the polling from the channel bank controller 12 and notifies the CPU 12b of the channel bank controller. Upon receipt of this message, the CPU 12 of the channel bank controller notifies the system controller that the local terminal 4 is currently in the controlled state when responding to the access request from the system controller 3. This prevents the system controller from sending commands to the channel bank controller and the channel bank controller is not double controlled.

The ROM 13d stores the inventory information of the interface unit 13 itself and provides it to the microprocessor of the channel bank controller 12 upon request.

In the above configuration, when the operator inputs a predetermined command from the keyboard of the local terminal, the channel bank controller is controlled in the same manner as when the command is received from the system controller, and provisioning or inventory for any transmission device unit is performed. The monitoring can be done in front of the transmission device.

〔The invention's effect〕

As described above, according to the present invention, provisioning and inventory monitoring for a transmission device that is remotely controlled by a central control device can be performed by accessing from a remote terminal at the maintenance site of the transmission device.
There is an effect that the operation of the transmission device control system becomes efficient.

[Brief description of drawings]

FIG. 1 is a block diagram showing a local access system of a transmission device of the present invention, and FIG. 2 is a diagram showing a control system of a conventional transmission device. In the figure, 1-1 to 1-N ... Transmission device, 11-1 to 11-n ... Unit, 12 ... Channel bank controller, 12a ... Level converter, 12b ... Microprocessor CP
U), 13 ... Interface unit, 13a ... Interface connector, 13b ... Level converter, 13c ... Microprocessor (CPU), 2, 5 ... Communication line, 3 ... System control unit, 4 ... Local The terminal is.

Claims (1)

(57) [Claims] 1. A channel bank controller (12) for managing data setting / collection for units (11-1 to 11-n).
And a plurality of transmission devices (1-1 to 1-N) provided with the channel bank controller (12) via a communication line (2) of a specific interface.
1-N), the transmission device control system comprises a system control device (3) for centrally controlling the transmission device to access an arbitrary transmission device (1-1) from a local terminal (4) having an interface different from the specific interface. A local access method for controlling units (11-1 to 11-n), in which a signal level is converted between the specific interface and a local terminal interface to control signals from the local terminal (4). Channel bank controller (12)
And a level conversion unit (13b) capable of transmitting the data collected by the channel bank controller (12) from each unit (11-1 to 11-n) to the local terminal (4), and the local terminal. When accessed from (4),
An interface unit (13) having a microprocessor (13c) for notifying the channel bank controller (12) of a status signal indicating that the local terminal is in use is provided in each transmission device (1-1 to 1-N), The local terminal (4) is connected to the channel bank controller (12) via an interface unit (13) to locally access the transmission device (1-1), and during the local access, the channel bank is controlled. A local access method of a transmission device, wherein a controller (12) notifies the system control device (3) that a local terminal is in use.