JPH06224905A - Maintenance line configuration system - Google Patents

Abstract

PURPOSE:To decrease number of lines allocated for maintenance by terminating maintenance lines for each station by a same handling group HG with respect to the communication network system comprising plural transmitters. CONSTITUTION:A control console 10 of a maintenance line interface section of a master station 1 makes data transmission by a call signal to the master station and each slave station and data reception by a reply signal from the master station and each slave station. A changeover selector is provided to the maintenance of each of slave stations 2, 3, 4, and when an equipment management control section 9 of the master station detects a call signal to the master station, the changeover selector is controlled and a reply signal is sent to the master station 1. When the equipment management control section 9 detects no call signal to the master station, the changeover selector is not controlled but the reply signal from a subordinate station is relayed to the master station.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance line construction method in a communication network system composed of a plurality of transmission devices. Communication network consisting of multiple transmission devices
An example of the system maintenance line configuration is shown in FIG. In the figure,
31 is a master station, 32 is a slave station A, 33 is a slave station B, 34 is a slave station C, and 35, 36 and 37 are transmission lines.

The master station 31, which is a master station and is a control console installation station, accommodates maintenance lines in the transmission lines 35, 36 and 37 in the same manner as general lines, and maintains each slave station (slave station) 32, 33 and 34.・ Manage. Maintenance line from master station 31 to each slave station 32, 3
Data is branched to 3 and 34, and each slave station 32, 33, 34
The method is to selectively receive the response from.

The transmission lines 35, 36 and 37 are constructed by connecting the stations to each other. The general line transmits data between the stations and the maintenance line maintains and manages the slave stations at the master station. The transmission line is constructed by a high-speed line multiplexing structure, but it is terminated by an HG (handling group) corresponding to each line, and each station needs to terminate a maintenance line (different HG). Generally used 1.5MHz, 24CH (4H
In the transmission line having the configuration G), some lines are used for maintenance lines and other lines are used for general lines. For this reason, in a device with a small line capacity, if the number of stations is large, the number of lines allocated for maintenance will increase, and the capacity of general lines will be pressured.

When distributing from the master station 31 to each slave station 32, 33, 34 like a maintenance line, the master station 31
HG is set to the termination setting for only three slave stations. In each slave station, the HG accommodating the interface for directly communicating with the master station 31 is terminated, and the HG that relays data to the next slave station is not terminated. That is, the master station
31 ends with HG1, HG2, HG3, and slave station 32 has HG1
Is terminated and HG2 and HG3 are not terminated.
Terminate G2, non-terminate HG1, HG3, slave station 34
Then, HG3 is terminated and HG1 and HG2 are not terminated.

[0005]

2. Description of the Related Art FIG. 6 shows a connection configuration diagram of a conventional maintenance line. In the figure, 41 is a master station, 42 is a slave station A,
Reference numeral 43 is a slave station B, 44 is a slave station C, and 45, 46 and 47 are transmission lines. In the master station 41, the control console and the device management control unit are connected by the maintenance line interface unit,
It is connected to the transmission line 45 by the transmission line interface unit. In addition, each slave station 42, 43, 44 is connected to the device management control unit by the maintenance line interface unit,
The transmission line interface section enables transmission lines 45 and 46, respectively.
Connected to 47.

The control console of the master station 41 is for monitoring, setting, and controlling the status of each station, and the device management control section is for collectively managing each device (frame). Multiple conversion
The transmission line interface unit is a transmission line interface for multiplexing various subordinate interfaces and outputting them to the transmission line. The maintenance line interface unit is provided in each station, and the same HG (line setting unit in the multiplexing unit) is used in each station.
Is terminated and the maintenance line interface unit is accommodated in the HG to form a maintenance line.

The control console of the master station 41 reads the installation state of each rack from the device management control section of each station, monitors the alarms of each rack, sets the line control for each rack, and controls these by time division. Information is collected for each channel by multiplexing. Each channel is composed of one transmission / reception channel, and the calling signal from the master station is received by the slave station, and the response signal from the slave station is received by the master station.

[0008]

When distributing from a master station to each slave station like a maintenance line, the master station sets HG terminations by the number of slave stations. In the slave station, the HG that accommodates the interface that directly communicates with the master station is terminated, and the HG that relays data to the next slave station is not terminated. Therefore, in the case of a device having a small line capacity, if the number of stations is large, the number of lines allocated for maintenance becomes large, and there arises a problem that the line capacity is pressed.

An object of the present invention is to efficiently construct a maintenance line in a communication network system composed of a plurality of transmission devices and effectively use the transmission line.

[0010]

FIG. 1 is a block diagram showing the principle of the present invention. In the figure, 1 is a master station, 2 is a slave station A, 3 is a slave station B, 4 is a slave station C, 5, 6,
7 is a transmission line, 8 is a transmission line interface unit, 9 is a device management control unit, and 10 is a control console. The master station 1 connects the control console 10 and the device management control unit 9 by the maintenance line interface unit HG1 of the transmission line interface unit 8, and the slave stations 2, 3 and 4 are connected by the maintenance line interface unit HG1 of the transmission line interface unit 8. Relay line and device management control unit 9
Controls switching between and.

The master station 1 transmits data by a calling signal to its own station and each slave station by the control console 10, and receives data by a response signal from its own station and each slave station. Each slave station has a switching selector in the maintenance line interface section, and when the device management control section 9 detects a call signal to the own station, it controls the switching selector to transmit a response signal to the master station 1. If the device management control unit 9 does not detect the call signal to the own station, the switching selector is not controlled and the response signal from the next station is relayed to the master station 1.

[0012]

The transmission data from the master station 1 is relayed by each slave station 2, 3 and 4 and dropped to each device management control unit 9, and the response data to the master station 1 is relayed and each device management control unit 9 is sent. Insert from. These two signal paths are constructed by using two channels in the same HG (Handling Group). Since 1HG has 6 channels, the maintenance line can be accommodated in 1HG.

[0013]

FIG. 2 shows an embodiment of a connection configuration diagram of the maintenance line configuration system of the present invention. In the figure, 11 is a master station, 12 is a slave station A, 13 is a slave station B, 14 is a slave station C,
Reference numerals 15, 16 and 17 denote transmission lines. In the master station 11, the control console and the device management control unit are connected by the maintenance line interface unit, and the transmission line 15 is connected by the multiplex conversion / transmission line interface unit.
It is connected to the. The slave station 12, 13, 14 is connected to a device management control unit by a maintenance line interface unit, and is connected to transmission lines 15, 16 and 17 by a multiplex conversion / transmission line interface unit, respectively.

The control console of the master station 11 monitors, sets, and controls the status of each station, and the device management control section collectively manages each device (frame). Multiple conversion
The transmission line interface unit is a transmission line interface for multiplexing various subordinate interfaces and outputting them to the transmission line. The maintenance line interface unit is provided in each station, and the same HG (line setting unit in the multiplexing unit) is used in each station.
Is terminated and the maintenance line interface unit is accommodated in the HG to form a maintenance line.

Each slave station 12, 13, 14 has a switching selector in the maintenance line interface unit, and switches the reception line to the relay line from the next station and the connection from the device management control unit by controlling the response signal. If the call signal from the master station 11 is judged to be a signal to the own station and the device management control unit, the switching selector is switched from the relay side to the response side by the response signal from the device management control unit, and the response from the device management control unit. Send data to master station 11.

If the device management control section determines that the call signal from the master station 11 is not a signal to the own station, the response signal from the device management control section is not sent out, so the switching selector remains switched to the relay side. The response data from the next slave station is relayed to the master station 11. The call signal from the master station 11 is transmitted by designating any slave station.
Since one slave station does not receive the call signal in duplicate, the slave station that does not transmit the response signal always relays the response data from the next station.

The maintenance line interface section may be used by the master station or the slave station.
They are set as master mode and slave mode, respectively. FIG. 3 shows an embodiment of a connection configuration diagram in the master mode, and FIG. 4 shows an embodiment of a connection configuration diagram in the slave mode. 3 and 4, 21 and 22 are multiplex conversion / transmission path interface units, 23 is a line setting unit (electronic jumper), and 24
Are various interfaces, 25 is a maintenance line interface unit, 26 is a speed conversion / phase adjustment unit, 27 is a control console, 28 is a device management control unit, and 29 is a selector unit.

The master mode maintenance line interface section 25 of FIG. 3 comprises a speed conversion / phase adjustment section 26,
The call signal is received from the control console 27 (the device management control unit 28 also receives the call signal), and the response signal is transmitted to the control console 27. Further, the line setting unit 23 sets CH1 to HG1 of the multiplex conversion / transmission line interface unit 21, speed-converts the ringing signal from the control console 27 and the response signal to the control console 27, and also performs phase adjustment to perform multiplexing. Transmission / reception to / from the conversion / transmission path interface unit 21.

The multiplex conversion / transmission line interface unit 21 is H
The G1 is terminated by various interfaces 24 and connected to the slave station via the transmission line. The other multiplexer / transmission line interface unit 22 is not used, the line setting unit 23 connects the HG2 to the interface unit 21 for non-termination, and the HG1 is used for a spare connection line for termination.

The maintenance line interface unit 25 in the slave mode shown in FIG. 4 is provided for speed conversion for CH1 and CH2.
Comprising a phase adjusting unit 26 and a selector unit 29, when the device management control unit 28 receives the call signal from the speed conversion / phase adjusting unit 26 for CH1, it controls the control line to the selector unit 29 at the time of response. The selector unit 29 is switched to the "1" side, and the response data is transmitted to the speed conversion / phase adjustment unit 26 for CH1 via the selector unit 29.

If the call signal is not received from the speed conversion / phase adjustment unit 26 for CH1, the selector unit 29 remains switched to the "0" side, so that the speed conversion / phase adjustment unit 26 for CH2 outputs the signal. The response data is relayed to the speed conversion / phase adjustment unit 26 for CH1. Therefore, multiple conversion
Received data of CH1 from HG1 of the transmission line interface unit 21 is relayed to the multiplex conversion / transmission line interface unit 22 by the maintenance line interface unit 25 and connected to the device management control unit 28 to detect whether it is for its own station. CH2 from the HG1 of the multiplex conversion / transmission line interface unit 21 processed
The maintenance data interface unit 25 relays or disconnects the received data of.

As mentioned above, 1C in master mode
H is used to send data from the control console to the slave stations and receive response data from each slave station. In slave mode, 2CH is used, the transmission data from the master station is received by CH1, and relayed to the next slave station by using CH2. Also, the response data of the slave station is CH
2 receives and relays using CH1. As described above, since the relay mode is provided in the slave mode, even if the number of stations is large, the line allocated for maintenance may be 2 channels of 1HG.

[0023]

According to the present invention, the lines allocated for maintenance can be reduced, and the lines can be used efficiently. Further, this makes it possible to install two maintenance lines, which improves reliability and maintenance efficiency.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the present invention.

FIG. 2 is a connection configuration diagram of an embodiment.

FIG. 3 Example of connection configuration diagram in master mode

FIG. 4 Example of connection configuration diagram in slave mode

[Fig. 5] Example of maintenance line configuration of communication network system

FIG. 6 is a connection configuration diagram of a maintenance line of a conventional example.

[Explanation of symbols]

1, 11, 31, 41 Master station 2, 12, 32, 42 Slave station A 3, 13, 33, 43 Slave station B 4, 14, 34, 44 Slave station C 5, 6, 7, 15, 16, 17 , 35, 36, 37, 45, 46, 47 Transmission line 8 Transmission line interface unit 9, 28 Device management control unit 10, 27 Control console 21, 22 Multiplex conversion / transmission line interface unit 23 Line setting unit 24 Various interfaces 25 Maintenance Line interface section 26 Speed conversion / phase adjustment section 29 Selector section

Claims (1)

[Claims] 1. A plurality of transmissions in which data is transmitted to a self station and each slave station by a call signal and is received by a response signal from the self station and each slave station by a control console of a maintenance line interface section of the master station. In the maintenance line configuration of the communication network system consisting of devices, a switching selector is provided in the maintenance line interface part of each slave station (2, 3, 4), and the call signal to the own station is detected by the device management control part (9). Then, the switching selector is controlled to transmit a response signal to the master station (1), and unless the device management control unit (9) detects a calling signal to the own station, the switching selector does not control the next level. The master station (1) is connected to relay the response signal from the station, and the slave station (2, 3, 4) relays the transmission data from the master station (1) and the device management control section (9). To the master station (1), relay the response data to the master station (1) and insert from each device management control unit (9), and route these two signals to two channels within the same HG (handling group). A maintenance line configuration method characterized by being configured using.