JP2002165021A - Remote control system using line setting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control system that conducts a loopback test and setting revision such as increase/decrease of speed without a maintenance personnel to visit to an installed place of network terminators even when both network terminators are installed in unattended stations where no maintenance/ operation personnel is resident and in operation. SOLUTION: This invention provides a remote control system employing a line setting function, which is characterized in that a control data channel and a service data channel are set for each of network terminators SUB 2-SUB 25 of unattended stations, a network terminator SUB 1 that is connected to a multiplex converter 2 with the line setting function and used to remotely control the network terminators of the unattended stations in common is provided, and a channel of the remote control network terminator SUB 1 is set as the control data channel corresponding to the network terminators SUB 2-SUB 25 of the unattended stations.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control system for a network termination device used in a high-speed digital line.

[0002]

2. Description of the Related Art Conventionally, a remote control method used in a high-speed digital line is such that one network terminating device is located at a manned station and the other device is located at an unmanned station. When a failure occurs, loopback control or speed control has been performed as a means for searching for a failure location.

[0003]

However, in the above-mentioned conventional remote control system, one of the network terminating devices needs to be a manned station, so that both network terminating devices are maintained and managed.
When operating in an unmanned station where no operator is stationed, maintenance by remote control cannot be performed, and loopback control and speed control must be performed if maintenance personnel do not go to the installation location of the network termination unit. Setting changes such as acceleration / deceleration could not be performed.

[0004] It is an object of the present invention to assign a control data channel to each network terminating device and to route it to the remote control network terminating device. The control data channel of the remote control network termination device is assigned to a channel drawn from the remote control network termination device. By using this channel for communication of control data, control of the network terminating device is performed remotely.

[0005]

In order to solve the above-mentioned problems, a control data channel and a service data channel are set in each of a plurality of unmanned station network terminating devices, and the plurality of unmanned stations are connected to each other. In a digital line having a multiplex conversion device having a line setting function of controlling connection of a line, a network termination device for remote control common to the network termination devices of the plurality of unmanned stations is connected to the multiplex conversion device, The setting of the channel of the remote control network termination device is set as a control data channel corresponding to the network termination devices of the plurality of unmanned stations, so that both network termination devices are unattended without a maintenance / operator. Even when operated in a station, maintenance by remote control can be performed. (Claim 1)

Further, by setting the channel setting of the remote control network terminating device into a channel corresponding to the network terminating device to be remotely controlled, both network terminating devices are maintained / operated by the operator. When the system is operated in an unmanned station where is not stationed, maintenance by remote control can be easily performed. (Claim 2)

[0007] By inserting remote loopback test data as control data, a loopback test can be performed remotely without a maintenance person going to the installation location of the network termination device. (Claim 3) In addition, by inserting data for monitoring a remote alarm as control data, it is possible to remotely monitor the alarm without a maintenance person going to the installation location of the network termination device. (Claim 4)

Further, by installing the remote control network terminating device in a highly convenient location near a manned station, the degree of freedom in installing the remote control network terminating device can be increased. (Claim 5)

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing one embodiment of the present invention. SUB2 to SUB25 are network terminating devices located at subscriber homes that are unmanned stations, and constitute remote controlled network terminating devices. Reference numeral 2 denotes a multiplex conversion device having a line function installed in a manned station, and the multiplex conversion device and the network terminating devices SUB2 to SUB2 at the subscriber's house.
5 is connected via a number of data channels,
The multiplex conversion device 2 performs line setting and time slot replacement, and for example, SUB2 and SUB
3. Digital data is transmitted and received between SUB4 and SUB5.

The SUB 1 is located in a manned station and serves as a network terminating device on the remote control side during the remote control.
It controls and monitors the network terminating units SUB2 to SUB25 at the subscriber's house. The remote control side network terminating device S
The UB1 does not necessarily need to be installed in a manned station, but may be any place where maintenance personnel can easily go.

Next, the operation of FIG. 1 will be described with reference to FIG. FIG. 2 shows the network terminating devices SUB1, SUB2 to SU.
13 shows an example of setting the line speed of B25. As shown in FIG. 2A, the multiplex conversion device 2 sets the channel between the network termination device SUB2 and the multiplex conversion device 2 to the control data channel ch1, and sets the service speed to the remaining ch2 to ch25 to the service data channel. Set as Also, the channel between the network termination device SUB3 and the multiplex conversion device 2 is shown in FIG.
As shown in (b), the control data channel is set to ch1, and the service speed is set to the remaining ch2 to ch25 as the service data channel.

Also, a network terminating unit SU provided in a manned station
As shown in FIG. 2 (c), the channels between B1 and the multiplex conversion device 2 are ch1 to ch24, respectively, as network termination devices SUB2.
SUB25 is set as a control data channel.

When setting the circuit so that the network terminating device SUB2 and the network terminating device SUB3 are connected, as shown in FIG. 2, the multiplex conversion device 2 sets the service data channels ch2 to ch6 of the line of the network terminating device SUB2 as shown in FIG. Network termination device SUB
3 are connected to service data channels ch2 to ch6. Further, in order to connect the control data channel between the network termination device SUB1 and the network termination device SUB2 provided in the manned station, the control data channel ch1 of the network termination device SUB2 is provided in the network termination provided in the manned station. Connected to ch1 of device SUB1. Further, a network terminating device SUB1 and a network terminating device SUB provided with a control data channel in a manned station are provided.
In order to make a connection with the network termination device 3, the control data channel ch1 of the network termination device SUB3 is connected to ch2 of the network termination device SUB1 provided in the manned station.

As described above, the network terminating device SUB2 and the network terminating device 3 are connected by the multiplex conversion device 2, and normal digital data transmission / reception is executed. Regarding the transmission / reception of digital data between the other network terminating devices, the connection between the network terminating devices is performed by the multiplex conversion device as described above.

Next, when remote control or monitoring is performed on the network terminating device SUB2, the control data is inserted into the ch1 of the network terminating device SUB1 provided in the manned station, so that the terminating device SUB2 is already in operation. , A loopback test and monitoring of an alarm detected by the network termination device SUB2 can be remotely executed.

A specific example of this case is as follows. The control data to be inserted is in a predetermined format. For example, the control is performed by transmitting and receiving a predetermined command to the data to be transmitted using a basic control procedure. The controlled network termination device analyzes the command and, for example, if it detects a disconnection of data (acceptance signal) from the terminal device connected to the command, sends a message indicating the disconnection to the remote control side network termination device. send.

The loop test is performed in the following procedure. SUB1 sends a loop command to SUB2. SUB2 executes the loop command, and the signal is looped back to the transmission path side. Next, SUB1 is SUB
Then, a pseudorandom pattern is sent to No. 3 and a command for error measurement is sent. The pseudo-random pattern sent from SUB3 is looped back at SUB2 and received at SUB3 to perform error measurement. The result is returned to SUB1 so that the normality of the line can be confirmed.

When remote control or monitoring is performed on the network terminating apparatus SUB3, control data is inserted into the channel terminating apparatus SUB1 channel 2 provided in the manned station. On the other hand, a loopback test and monitoring of an alarm detected by the network termination device SUB3 can be remotely executed. The same applies to the other network terminating devices SUB4 to SUB25.

[0019]

According to the first aspect of the present invention, a control data channel and a service data channel are set in each of a plurality of unmanned station network terminating devices, and a line connection between the plurality of unmanned stations is controlled. In a digital line having a multiplex conversion device having a line setting function, a network termination device for remote control common to the network termination devices of the plurality of unmanned stations is connected to the multiplex conversion device, and the remote control By setting the channel setting of the network terminating device as a control data channel corresponding to the network terminating devices of the plurality of unmanned stations, the control data channel of the network terminating device to be controlled and monitored is arranged at a highly convenient location. By collecting the information in the remote control network terminating devices, the control and monitoring of each network terminating device can be remotely performed.

According to the second aspect of the present invention, control data is inserted into a control data channel corresponding to a network termination device to be remotely controlled among the channels of the remote control network termination device. Accordingly, various remote controls can be easily performed on the network termination device of the unmanned station.

According to the third aspect of the present invention, by inserting remote loopback test data as control data, the loopback test can be remotely performed without maintenance personnel going to the installation location of the network termination device. It can be carried out. According to the fourth aspect of the present invention, by inserting data for monitoring a remote alarm as control data,
The alarm can be monitored remotely without a maintenance person going to the installation location of the network termination device.

According to the fifth aspect of the present invention, since the remote control network terminating device is installed in a highly convenient place near a manned station, the location of the remote control network terminating device can be freely set. The degree can be increased.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of setting a channel of a network termination device.

[Explanation of symbols]

 1 Controlled Network Terminating Device (SUB2 to SUB25) 2 Multiplexer with Line Setting Function 3 Remote Controlled Network Terminating Device (SUB1)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K048 AA05 BA01 CA08 CB01 DA02 DC04 EA11 EB02 EB06 FC01 GB01 GC03 HA01 HA02 HA05 HA07 5K101 KK11 LL03 MM01 MM04 MM07 SS01 SS06 SS07 TT06 UU16 VV01

Claims (5)

[Claims] 1. A multiplex conversion apparatus having a line setting function for setting a control data channel and a service data channel in each of a plurality of unmanned station network terminators and controlling a line connection between the plurality of unmanned stations. A digital line having a remote control network terminating device connected to the multiplex conversion device common to the plurality of unmanned station network terminating devices, and setting a channel of the remote controlling network terminating device. A remote control system using a line setting function, wherein the remote control system is set as a control data channel corresponding to a network termination device of a plurality of unmanned stations. 2. The remote control is executed by inserting control data into a control data channel corresponding to a network termination device to be remotely controlled among channels of the remote control network termination device. A remote control system using the line setting function according to claim 1. 3. The remote control system according to claim 2, wherein the inserted control data is loopback test data. 4. The remote control system using a line setting function according to claim 2, wherein the inserted control data is monitoring data of a remote alarm. 5. The remote control system using a line setting function according to claim 1, wherein said remote control network terminating device is installed near a manned station.