JP2001024637A - Method and system for monitoring signal link - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce number of signal lines to be introduced and to simplify exchange switches in a signal station and a monitor device by selecting a monitor link distributed from a plurality of signal links between the signal station and another signal station, according to the control signal from a monitor control part inside a monitor signal selecting device, which is independent of a signal processor inside the signal station. SOLUTION: When the signal link between a signal processor 101 of a signal station 10 and a signal processor 201 of a signal station 20 is monitored, signal link is selectively set by the monitor control part 322 in a signal monitor part 32. A selection control part 312 impresses a control voltage for selection on a SEL 311 by the selective indication of the signal link, which is to be monitored. A monitor 321 in the signal monitor part 32 monitors the signal in the monitor link, which is received from a monitor link selecting device 31. Exclusive control or the like is not required, and the signal link is monitored by the device which is perfectly independent of the signal station or the signal processor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a signal link monitoring method and a signal link monitoring system for monitoring signals of a plurality of signal links between a signal station and another signal station.

[0002]

2. Description of the Related Art (1) Conventional method 1 First, a conventional method 1 will be described with reference to FIG.

In order to monitor the signal link in the signal station 10 by the monitor device 30, the same signal as the signal transmitted and received is extracted for monitoring for all the links from the signal station 10 to the signal station 20 to be connected. It connects to the selection unit SEL301 in the monitor device 30.

[0004] Similarly, for other signal stations, SEL30
Connect to 1. The monitor can be monitored by designating a link to be monitored from the control unit 303 and selecting the link to be monitored by the SEL 301 and displaying the selected link on the monitor 302.

[0005]

However, this method has the following problems.

First, all the links to be monitored from each signal station must be accommodated in the SEL 301.
The number of signal lines to 301 becomes enormous. Next, the monitor device 3
The SEL 301 of 0 increases in proportion to the number of signal lines, the number of controls by the control unit also increases, the SEL 301 itself also increases, and the display recognition of which link signal the monitor 302 uses becomes less clear.

(2) Conventional method 2 Next, a conventional method used to reduce the number of links between signal stations and monitor stations will be described.

In FIG. 6, a signal station 10 and a monitor 3
In order to send the signal information of the link to be monitored to the monitoring link between 0 and 0, it is necessary to simultaneously send the signal to be sent to the signal station 20 of the connection destination to the monitor device 30. A switch 104 is prepared and a multipath is set. Also, in the monitor device 30, an exchange switch 301 is prepared in order to select a signal link to be monitored from arbitrary signal stations 2 and 3. The exchange switch 301 in the monitor device 30 receives monitor signals corresponding to the number of links from the plurality of signal stations 10 and displays the respective signals on the monitor 302 by selecting these. As described above, an arbitrary signal station / link can be monitored.

In this system, the following conditions must be satisfied in order to enable remote monitoring. First, (1) the signal station 10 must have the exchange switch 104 and be capable of controlling multipath settings for monitoring. (2) The monitor device 30 includes an exchange switch 301 for selecting a signal link to be monitored from the signal links for monitoring connected to the signal station and setting a path for connecting to the monitor 302. thing. (3) Multipath setting at the signal station 10;
It is necessary to unify the path setting in the monitor device 30, and it is necessary to satisfy each of the necessity of transmitting and receiving control information between the signal station 10 and the monitor device 30. As a result, the number of signal lines to be drawn into the monitor device 30 can be reduced by the number of switching switches 104 accommodated in each signal station as compared with the conventional system 1, so that the configuration of the monitor device 30 is simplified.

However, in this system, there is a problem that a function for monitoring must be incorporated on both the monitor side and the monitored side.

The present invention provides a signal link monitor system which solves the above problems. That is, when a link is established in a communication system, a monitoring device that monitors transmission signals of a plurality of signal stations reduces the number of signal lines to be introduced, simplifies an exchange switch in the signal station, and replaces an exchange switch in the monitor device. Another object of the present invention is to simplify synchronization of both exchange switches.

[0012]

According to the present invention, there is provided a signal link monitoring method for monitoring signals of a plurality of signal links between a signal station and another signal station, wherein the signal link monitoring method is independent of a signal processing apparatus installed in the signal station. The selected monitor signal selection device,
A monitor link distributed from the plurality of signal links is selected according to a control signal from a monitor control unit to be displayed on a monitor in the monitor signal selection device, and a signal of the selected monitor link is output to the monitor. It is characterized by doing.

The present invention also provides a signal link monitoring method for selecting a signal link and monitoring one signal by selecting a plurality of signal link pairs between a signal station and another signal station. A control signal from a monitor control unit for arranging a plurality of monitor signal selection devices independent of a signal processing device installed in the signal station and displaying the monitor signal on a monitor in a monitor device connected to the monitor signal selection device by a general-purpose interface bus Selecting a plurality of monitor links respectively distributed from the plurality of signal links in the monitor signal selecting device, and performing monitor control on one monitor link from the monitor links selected from the plurality of monitor signal selecting devices. And outputting the selected one monitor link signal to the monitor in response to a second control signal from the unit. To.

Further, the present invention provides a signal link monitor system for monitoring signals of a plurality of signal links between a signal station and another signal station, wherein the signal link monitor system is arranged independently of a signal processing device installed in the signal station. A monitor signal selecting device, and a distributor that outputs a monitor link signal by distributing from the signals of the plurality of signal links in the monitor signal selecting device,
A monitor control unit for selecting a monitor link of the distributor;
A selector for selecting a monitor link from the distributor according to a control signal from the monitor control unit, and outputting a signal of the selected monitor link to the monitor.

The present invention also provides a signal link monitoring system which has a plurality of signal link pairs between a signal station and another signal station, selects the signal link, and monitors one signal thereof. A plurality of monitor signal selection devices for each pair of the plurality of signal links independent of a signal processing device installed in a signal station; a general-purpose interface bus connected to each of the monitor signal selection devices; and a monitor in the monitor device. A monitor control unit for displaying a plurality of monitor links respectively distributed from the plurality of signal links in the monitor signal selection device according to a control signal from the monitor control unit; and A second monitor link selecting one monitor link from the monitor links selected from the monitor signal selecting device in accordance with a second control signal from the monitor control unit; A 択器, and outputs a signal of the selected one of the monitored link on the monitor.

In the signal link monitoring method according to the present invention, (1) a monitoring device independent of the signal processing device installed in the signal station is installed and monitored, thereby monitoring the signal processing device in the signal station. It has the following two features that it is not necessary to provide a monitoring function at all, and (2) it is possible to realize monitoring both in a signal station and in a remote place using the same device.

The features of the present invention will be described with reference to FIGS. 1 and 2. According to the present system in FIG. 1, a signal monitor and a signal monitoring device independent of a signal processing device in the signal station are installed. 2 shows a case where monitoring is performed, and is configured by a signal extracting unit 30, a signal link selecting unit 31, and a signal monitoring unit 61. In the system shown in FIG. 2, a signal monitoring device according to the present invention is installed in a remote place. This shows a case where monitoring is performed, and a signal extraction unit 30 and a monitor link selection unit 3 installed in a plurality of signal stations and the like.
1 and a monitor device 6 including a monitor link selector 60 and a signal monitor 61 installed at a remote location.

1 and 2, the selection control of the monitor link is realized by using the general-purpose interface 7 such as a LAN. Therefore, the signal station 10 or the signal station 20 uses the dedicated control for realizing the signal link monitor. No monitoring is required, and a signal link can be monitored by a device completely independent of the signal station or the signal processing device.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described.
This will be described in detail with reference to the drawings.

First Embodiment (1) Description of Configuration The configuration of an embodiment of the present invention will be described with reference to FIGS.

First, a description will be given with reference to FIG. The signal link monitoring method in FIG. 1 indicates a method in which the signal monitoring device 3 in the present method monitors only the signal link 104 between the signal station 10 and the signal station 20.
It comprises a signal extracting unit 30, a monitor link selecting unit 31, and a signal monitoring unit 61.

Here, the signal extracting section 30 is composed of a plurality of distributors 301. The distributor 301 is composed of a signal processing device 101 and a signal processing device 201, each of
2 and 202, 103 and 203, respectively.
An interface with the signal link 104 is realized. When the signal link 104 is composed of an optical fiber, the distributor 301 is composed of a Y-shaped plywood, an arrayed waveguide type, a fused fiber type optical star coupler, a directional coupler, or the like. Monitor link 30 from part of link 104
4 is derived.

A signal to be monitored flowing on the signal link 104 is sent to the monitor link selector 31 as a monitor link 304. The monitor link 304 may be formed of an optical fiber similarly to the signal link 104.

The monitor link selecting section 31 includes a SEL (selector) 311 for selecting one of the monitor links 304 to be monitored, and a selection control section 312 for controlling the SEL 311. The selector 311 applies a control voltage from the selection control unit 312 to the optical modulator to which each optical fiber is connected, and selects only one monitor link 304 by conducting it. To select one signal link 304.

The SEL 311 selects a link to be monitored from the plurality of monitor links 304 sent from the signal extracting unit 30 according to the instruction of the selection control unit 312 according to the instruction of the selection control unit 312, and outputs a signal as the monitor link 32. It is sent to the monitor 61.

The selection control unit 312 is connected to the monitor control unit 322 in the signal monitor unit 32 by a general-purpose interface bus 7 such as a LAN, and controls the SEL 311 according to an instruction from the monitor control unit 322.

The signal monitor 61 includes a monitor 321 and a monitor controller 322. Monitor 321
Receives the monitor link 32 selected and transmitted by the SEL 311 in the monitor link selection unit 31, and implements a monitor function such as screen display.

The monitor control unit 322 interfaces with the selection control unit 312 via the general-purpose interface bus 7,
The selection control of the link to be monitored is performed.

In FIG. 1, the signal station 10 and the signal station 20 may be considered to correspond to the signal monitoring device 3 from an equal standpoint, and the signal monitoring device 3 monitors the transmission signal of the signal link 104. An example is shown. The signal station 10 includes signal processing devices 101 to 103, and a plurality of signal processing devices are connected. Similarly, the signal station 20 includes signal processing devices 201 to 203, and a plurality of signal processing devices are connected. The signal stations 10 and 20 include a switch device and a signal terminating device in a network such as a LAN and a WAN, and a router and a bridge for data transmission.

Next, a description will be given with reference to FIG. The signal link monitoring method in FIG. 2 shows a method of monitoring a signal link between a plurality of signal stations at a remote place or the like. In the figure, the signal stations 10 and 20, as well as the monitor signal selection devices 3, 4, and 5 provided between the signal stations 11 and 21, and the signal stations 12 and 22, respectively, and the monitor device installation station are provided. It is constituted by a monitor device 6.

The monitor signal selecting device 3 comprises a signal extracting section 30 and a monitor link selecting section 31 as described with reference to FIG. 1, and the monitor device 6 is also described with reference to FIG. As described above, the monitor link selection unit 6
0 and a signal monitor 61.

The signal extracting section 30 in the monitor signal selecting apparatus 3 is located between the signal processing apparatuses 101 and 201, 102 and 202, and 103 and 203, similarly to the signal extracting section 30 in FIG. An interface with the link 104 is realized.

A signal to be monitored flowing on the signal link 104 is sent to the monitor link selecting section 31 as a monitor link 304.

The monitor link selecting unit 31 in the monitor signal selecting device 3, like the monitor link selecting unit 31 in FIG.
According to the instruction 2, the link to be monitored is selected and sent to the monitor device 6 as the monitor link 32. The monitor signal selection devices 4 and 5 have the same contents as the monitor signal selection device 3.

The monitor link selector 60 in the monitor device 6
1 is realized by the same device as the monitor link selecting unit 31 in FIG. 1, which also has the same configuration as the monitor link selecting unit 31 in the monitor signal selecting device 3. Selection device 3 ~
5, a signal link 62 to be monitored is selected from the monitor links 32, 42, and 52 transmitted.

The signal monitor 61 in the monitor device 6
It is realized by the same device as the signal monitor unit 32 in FIG.
The signal monitor 61 is received via the monitor link transmitted from the monitor signal selection devices 3 to 5, and a display function of the monitor 611 such as a screen display is realized. Monitor control unit 612
Is connected to the selection control unit 602 by the general-purpose interface bus 7.
And controls the selection of the monitor links 32, 42, and 52 to be monitored by the monitor 611. Also,
In cooperation with the selection control unit 312 in the monitor link selection unit 31, when displaying on the monitor 611, it is specified which signal link signal is being displayed.

(2) Description of Operation The operation of the embodiment of the present invention will be described with reference to FIGS.

First, the operation of the embodiment shown in FIG. 1 will be described with reference to the block diagram of FIG. 1 and the flowchart of FIG.

Referring to FIG. 1, a case where a signal link between the signal processing device 101 of the signal station 10 and the signal processing device 201 of the signal station 20 is monitored will be described as an example.

(1) The monitor control section 322 in the signal monitor section 32 selects and sets a signal link to be monitored (101).

(2) The monitor controller 322 instructs the selection controller 312 in the monitor link selector 31 via the general-purpose interface 7 to select the signal link 5 to be monitored (102). .

(3) The selection control unit 312 controls by applying a selection control voltage to the SEL 311 so as to select the signal link 5 to be monitored (103).

(4) The monitor link 5 of the signal link 4 to be monitored is selected by the SEL 311 (104).

(5) Monitor 321 in signal monitor section 32
In, the signal in the monitor link received from the monitor link selecting device 31 is monitored (105).

As described above, the signal station 10 or the signal station 2
At 0, no dedicated control or the like is required in realizing the monitoring of the signal link, and the monitoring of the signal link can be realized by a device completely independent of the signal station or the signal processing device.

Next, the operation of the embodiment shown in FIG. 2 will be described with reference to the block diagram of FIG. 2 and the flowchart of FIG.

Referring to FIG. 2, a case will be described as an example where the signal link 104 between the signal processing device 101 of the signal station 10 and the signal processing device 201 of the signal station 20 is monitored. The relationship between the signaling station 11 and the signaling station 21 and the relationship between the signaling station 12 and the signaling station 22 can be similarly described.

(1) The signal monitor 61 in the monitor device 6
In the monitor control unit 612, the signal link of the monitor signal selecting device accommodating the link to be monitored is set (201).

(2) The signal monitor 61 in the monitor device 6
In the monitor control unit 612, a monitor signal selecting device 3 that accommodates a signal link to be monitored is specified (202).

(3) In accordance with the designation from the monitor control unit 612, the selection control unit 602 in the monitor link selection unit 60 in the monitor device 6 via the general-purpose interface 7 sends the monitored links 32, 4 to the SEL 601.
Any one of the selection controls 2 and 52 is performed (203).

(4) The SEL 601 in the monitor link selector 60 in the monitor device 6 allows the link 3 to be monitored.
The monitor signal selection device 3 that accommodates any one of the monitor signals 2, 42, and 52 is selected (204).

(5) The signal monitor section 61 in the monitor device 6
The monitor control unit 612 of the monitor signal selecting unit 312 of the monitor link selecting unit 31 in the monitor signal selecting device 3 accommodating the signal link 104 to be monitored,
The signal link to be monitored is specified (205).

(6) In accordance with an instruction from the monitor control unit 612, the selection control unit 3 in the monitor link selection unit 31 in the monitor signal selection device 3 via the general-purpose interface 7.
12, the SEL 311 is controlled to select a link to be monitored (206).

(7) The monitor target link 304 is selected by the SEL 311 in the monitor link selector 31 in the monitor signal selector 3 (207).

(8) The signal link to be monitored is selected, and the monitor result is displayed and output on the monitor 621 in the monitor device 6 (208).

As described above, one of the signal links linked to the plurality of signal stations can be selected by the unified selection of the monitor control unit 612, and the signals flowing through the respective signal links can be displayed on the monitor 611. It is possible to determine the normality of the monitoring result and specify an abnormal part. As a result, it is also possible to isolate a failure related to the signal station, and it is possible to reduce the number of operations for dealing with a failure. Further, the exchange switch in the signal station can be simplified, the exchange switch in the monitor device can be simplified, and the synchronization of both exchange switches can be simplified.

[Second Embodiment] In the present invention, a case is considered in which a signal link in the No. 7 signal system, which is mainly defined in the Q series as a signal, is monitored. Terminal Equipment (DTE) for packet-type terminals with dedicated lines connected to the public data network according to ITU-T
X. CE (Data Circuit Terminal Equipment) interface. 25 LAPB
(Link Access Protocol (Procedure) Balanced) and the like can be monitored in the same manner.

In the case of monitoring LAPB, an arbitrary link monitor is possible by installing a monitor signal selecting device and a monitor device as a signal extracting section between a signal station to be monitored and its opposing device.

Further, since no special hardware is required, a new effect that a device necessary for monitoring can be shared is generated.

In the above embodiment, the link transmission line of the signal link or the monitor link has been described as an example of an optical fiber. However, the transmission line may be a coaxial cable or a wireless transmission line. Can be monitored by receiving a part of. Although the interface 7 is an example of a general-purpose interface such as a LAN, an optical fiber or a coaxial cable is used for this interface, and the interface is not limited to a transmission path member. Although the monitors 321 and 611 have been described using examples of displays, a measuring instrument such as a data analyzer or a synchroscope may be used for observing a signal waveform. You can print out the waveform shape of the
It may be displayed on a Y plotter or output to various output devices.

Also, an example in which the monitor function of the entire system is controlled by the monitor control unit 612 has been described. However, the monitor time may be monitored at predetermined time intervals. May be operated. For example, when a failure occurs in any of the signal links, it is also possible to specify and monitor the signal link.

Further, the monitor control section 612 can delete the signal link or add the signal link even if there is a case.
The selection of that signaling link can be deleted or increased and monitored. When the monitor 611 is a display, and the monitor control unit 612 selects a specific monitor link for each of the selection control units, the specific monitor link is signal code together with the signal data and the identification code of the monitor link is a character code. By using the display, a friendly display can be provided to the operator, so that an accurate determination can be promoted.

[0063]

According to the signal link monitoring method and the signal link monitoring system of the present invention, the following effects can be obtained.

(1) The use of the monitor signal selection device allows the signal station or the signal processing equipment in the signal station to be completely independent of the system. No hardware or software processing is required.

(2) When monitoring is performed at a remote location, a device (monitor link selection unit) for selecting a signal link to be monitored is arranged for each signal station, so that a signal between the monitor signal selection device and the monitor device is provided. The number of monitor links is kept to a minimum.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration according to a signal monitoring method of the present invention.

FIG. 2 is a block diagram illustrating a configuration according to a signal monitoring method of the present invention.

FIG. 3 is a flowchart according to the signal monitoring method of the present invention.

FIG. 4 is a flowchart according to the signal monitoring method of the present invention.

FIG. 5 is a block diagram showing a configuration based on a conventional signal monitoring method.

FIG. 6 is a block diagram showing a configuration based on a conventional signal monitoring method.

[Explanation of symbols]

 3, 4.5 signal monitoring device (monitor signal selection device) 6 monitoring device 7 interface (bus) 10, 11, 12, 20, 21, 22 signal station 30 signal extraction unit 31, 60 monitor link selection unit 32, 42. 52 monitor link 61 signal monitor section 62 monitor link 101, 102, 103 signal processing device 104, 111, 121, 211, 221 signal link 201, 202, 203 signal processing device 301, 302, 303 distributor 311, 601 SEL (selection) Unit) 312, 602 Selection control unit 321, 611 monitor 322, 612 Monitor control unit

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) HH16 HH17 HH26 KK02 LL02

Claims (7)

[Claims] 1. A signal link monitoring method for monitoring signals of a plurality of signal links between a signal station and another signal station, wherein a monitor signal selection device independent of a signal processing device installed in the signal station is arranged. Selecting a monitor link distributed from each of the plurality of signal links according to a control signal from a monitor control unit to be displayed on a monitor in the monitor signal selecting device, and transmitting a signal of the selected monitor link to the monitor. A signal link monitoring method characterized by outputting. 2. The signal link monitoring method according to claim 1, wherein the monitor signal selecting device distributes the monitor link by the plurality of signal links between the signal stations and a coupler respectively, and selects the monitor link. The signal to be monitored is transmitted by a general-purpose interface bus and is selected by a selector for selecting the monitor link. 3. A signal link monitoring method comprising a plurality of signal link pairs between a signal station and another signal station, selecting said signal link and monitoring one signal thereof, wherein said signal link is installed in said signal station. A plurality of monitor signal selection devices independent of the signal processing device to be arranged are arranged, and the monitor signal selection device is connected to the monitor signal selection device by a general-purpose interface bus in accordance with a control signal from a monitor control unit to be displayed on a monitor in a monitor device. A plurality of monitor links respectively distributed from the plurality of signal links in the monitor signal selection device are selected, and one monitor link is selected from the monitor links selected from the plurality of monitor signal selection devices by the monitor control unit. A signal link for selecting one of the monitor links and outputting the selected signal to the monitor. Monitoring method. 4. A signal link monitor system for monitoring signals of a plurality of signal links between a signal station and another signal station, wherein a monitor signal selection unit arranged independently of a signal processing device installed in the signal station. Device, a distributor for distributing from the signals of the plurality of signal links in the monitor signal selection device and outputting a monitor link signal, a monitor controller for selecting a monitor link of the distributor, and the monitor controller A selector for selecting a monitor link from the distributor in response to a control signal from the distributor, and outputting a signal of the selected monitor link to the monitor. 5. The signal link monitor system according to claim 4, wherein the monitor signal selecting device distributes the monitor links by the plurality of signal links between the signal stations and respective couplers; A general-purpose interface bus for connecting a monitor control unit and the selector, wherein a control signal for selecting the monitor link is transmitted by the general-purpose interface bus and one monitor link is selected by the selector for selecting the monitor link. A signal link monitor system characterized by selecting. 6. A signal link monitoring system having a plurality of signal link pairs between a signaling station and another signaling station, selecting said signaling link and monitoring one of said signaling links, said signal link being installed in said signaling station A plurality of monitor signal selection devices for each pair of the plurality of signal links independent of the signal processing device to be connected, a general-purpose interface bus connected to each of the monitor signal selection devices, and a monitor to be displayed on a monitor in the monitor device A control unit, a selector for selecting a plurality of monitor links respectively distributed from the plurality of signal links in the monitor signal selection device according to a control signal from the monitor control unit, and the plurality of monitor signal selection devices And a second selector for selecting one of the monitor links from the monitor links selected according to a second control signal from the monitor control unit. A signal link monitor system for outputting a signal of the selected one monitor link to the monitor. 7. The signal link monitoring system according to claim 6, wherein the monitor signal selection device distributes the monitor links by the plurality of signal links between the signal stations and a coupler, respectively, and A control signal for selecting a monitor link of the selector and the second selector; and a second control signal for selecting a monitor link of the selector and the second selector. Is a signal link monitor system transmitted by the general-purpose interface bus, selects the one monitor link, and selects one monitor link by the selector and the second selector.