JPS60107962A - Supervisory system - Google Patents

Abstract

PURPOSE:To attain economical and simple supervisory by providing external supervisory device only to one controller in a decentralized automatic exchange system so as to supervise other controllers. CONSTITUTION:A controller of an optional exchange unit, e.g., 3-1 transmits an incoming connection start signal and a check call display signal to other exchanger units in a proper period in the decentralized automatic exchange system comprising local exchange units 3-1, 3-2 and relay exchange units 3-3, 3-4. The controller to the incoming units executes the incoming cell analysis flow, identifies a check call display and returns a check OK signal to the exchange unit 3-1. Since the exchange unit 3-1 supervises the time at the state of reception waiting of check OK, if the check OK signal is not returned within a predetermined time, it is discriminated as a fault.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a system for monitoring the health of a system, and particularly to an external monitoring device in a distributed automatic switching system.

[Background of the invention]

Until now, there have been few examples of distributed automatic exchange systems, and the system health monitoring method is not very clear, but the first
This will be explained using FIGS.

Fig. 1 is a diagram of a distributed automatic switching system. In Fig. 1, 1-1 is a local switching unit including subscriber lines, trunk lines, various service terminals, etc., and 1-2 is a connection between the local switching units. Relay exchange order for relay exchange only), 1-
Reference numeral 3 denotes an interfurniture section for various terminals (for example, telephones, data terminals, etc.). 1-3 differ depending on the type of terminal.

1-4 is a time-division multipolar highway between 1-1 and 1-2,
1-5 is a time division multiplex highway between 1-1 and 1-3, and l-4 and 1-5 both consist of two bear highways, one in one direction and the other in the opposite direction. 1-6 is 1-
The external monitoring device for 1-2 is the external monitoring device for 1-2.

Figure 2 is a block diagram of 1-1 and 1-2. Division multiplex highway, 2-3 is ttt
Use the lJ supine device.

Although some redundancies have been made in FIGS. 1 and 2 above, this is for the convenience of explanation and does not impair generality. In addition, only what is necessary for explanation is illustrated, and what is necessary in actual operation and operation is omitted.

1-6 is a pseudo terminal device and has an interface to Ruri and l-3, starts 1-1 from the outside, checks the response, and monitors whether 1-1 is operating normally. There is something to do.

In other words, 1-6 is 11M, which is the same as a call from a general machine.
Create k periodically. Considering that 1-3 is a general call, 1-1
Contact 2-3. 2-3 is dial tone fjj-
To perform the connection, the dial tone source (not shown) connected to 1-5 is switched. In other words, when a general call connection is performed, terminals 1-6 receive a dial tone. 1-6 monitors the time from receiving the calling letter R4 to receiving the dial tone, and if the dial tone is not returned within a certain period of time, it is assumed that 1-1 is abnormal.

Next, regarding 1-2, since 1-2 only performs relay exchange between 1-1, 1-7 becomes a pseudo local exchange unit.

1-7 issues the following relay exchange order to 1-2.

1-2 switches, and an order is issued to be looped back and connected to 1-7, which is activated again. This results in 1
After sending the order to 1-2, -7 monitors the order coming from l-2, and 1-2 successfully relays the exchange'? will be implemented or monitored.

As explained above, in the conventional decentralized automatic switching system, in the acuity type, for each subsystem (local switching unit, relay switching unit);
4 4Q 1. -1'1'tln 1 4I-'fl
: Semaru mll ail Jr Mtb it, r
X 11'h - An external monitoring device is required for each replacement control device, which is extremely uneconomical, and also has the disadvantage that there are 14 monitoring devices, one for the local replacement unit and one for the relay replacement unit.

[Objective of the Invention J] The object of the present invention is to eliminate the above-mentioned drawbacks and to propose an economical and simple monitoring method for a distributed automatic switching system.

[Summary of the invention]

In order to achieve the above purpose, in a distributed automatic switching system, arbitrary l
The other side monitors the normality of other tIIlj# devices, and the number of monitoring side o11 devices 1111 K is such that an external monitoring device @2 is installed.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described using FIGS. 3 to 5.

FIG. 3 is a block diagram of a fraction type automatic exchange system according to an embodiment of the present invention.

In skin figure 3, 1-1 in figure 1 is added to 3-1 and gamma 3-2.
corresponds to However, 3-1 indicates a locally exchanged unit that monitors other control devices, and 3-2ij indicates a locally exchanged unit that does not. 3-3 and 3-4 are the first
It is the same relay exchange unit as 1-2 in the figure, 3-4 is 1-3.3-5Fi in Figure 1, 1-4.3-6 in Figure 1 is @
1-5°3-7 in Figure 1 is the same as 1-6 in Figure 1.

FIG. 4 is an example of the principle algorithm of the incoming call analysis flow incorporated in the 1lilJ control device 2-3 in 3-2.

The 51st field shows an example of a general call processing activation signal (IAM) signal format exchanged between local switching units.

A check call indication bit is provided in the call type indication (total of 12 pits) in the IAM signal formant. , shall be treated as a check call.

Furthermore, although only one and two local exchange units and two relay exchange units are shown in FIG. 3, this is for the convenience of explanation and is not intended to be specific.

Similarly, although some assumptions were made in Figures 3 to 5,
This is also for the convenience of explanation and does not detract from the killing effect.

Then, 3-1's 11-return device 2-a sends an incoming connection activation signal to 3-2 via 3-3 at an appropriate period (currently, every 3 minutes). At this time, in step 3-1, the check call display shown in FIG. 5 is displayed in the call type display in the calling mJ@ number.

3-3 is simply switched to 3-2 as a general incoming connection activation signal.

The control device #L2-3 of 3-2 performs incoming call analysis flow according to the algorithm illustrated in FIG. At the end of the calling task, check the IAM call type display and perform a bintra analysis of the call display. At this time, if there is no check call display, 2-3 activates 2-1 and 3-4 and activates the telephone line as a continuation of the general inspection. However, if the check call display is cleared, as shown in FIG. 4, the check OK signal is returned to 3-1, and 3-2 is restored.

Here, since time monitoring is performed while waiting for reception of 3-IU check OK, if check OK is not returned to fM at a predetermined time, 3-3 may be at fault, or 3-
In order to determine whether 2 is at fault, the exact same l AM't- is sent to 3-2 via 3-4.

When the check OK signal is correctly returned to the activation signal, it is determined that 3-3 is a failure, and if the check OK is not returned even after timeout, 3-2 is determined to be a failure. It is also possible to use a combination of methods for division such as judgment.

However, regarding the normality check of 3-1, in order to avoid checking yourself, 3-1 accommodates 3-1.
4. External monitoring device 3-7?11 with pseudo terminal function
- Set up and implement.

A known external monitoring device is sufficient for 3-7, and its explanation will be omitted.

As described above, as is clear from this embodiment, the number of external monitoring devices can be reduced, and the need for pseudo-local replacement units is eliminated.

〔Effect of the invention〕

According to the present invention, it is sufficient to install one external monitoring device, so it has the effect of blindly contributing to economicalization of the system.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional monitoring system, and FIG. 2 is a diagram showing 1-1 and 1-2 in FIG. Figure 5 is a schematic diagram of 3-1 to 3-3 in Figure A3, Figure 5 is a configuration diagram of an embodiment of the monitoring system according to the present invention, Figure 4 is a flowchart of the change-over division in the embodiment of the above FIG. 5 is a format diagram of No. 1g of general call processing activation No. 18.

Claims (1)

[Claims] 1.- In a distributed automatic switching system consisting of a plurality of units having a membrane exchange function, a test signal is included in a general call processing activation signal sent and received between each unit to start call processing. Each unit has a function to periodically send out a general call processing activation signal with a test signal display to other units by sequentially changing the destination unit for testing purposes. When a general call processing start signal is received, after processing the general call and IWJ, all test signal displays are discriminated, and after identifying it as a test signal, all processing is cleared, and a processing light response is sent to the general call processing start signal sending unit. By providing a full return function, any one unit (called the activation/excitation unit) can monitor the normality of other units, and the distributed automatic exchange system can be installed at the general terminal position of the activation unit. is provided with an external monitoring device t't- having an independent control system, and
Confirmation message sent from the startup unit after normal processing
＠A monitoring method in which an external nuclear monitoring device periodically monitors the normality of the activation unit and monitors the normality of the system. Z It accommodates all subscriber lines, trunk lines, and various service circuits, and has a switching function.
In a distributed automatic switching system consisting of a plurality of relay switching units that relay and exchange signals, the local switching units are provided with the components and functions described in item 1, and any one local switching unit (referred to as the starting local switching unit) ) to other local exchange units via any relay exchange unit, when an error is detected, the relay exchange unit 71
1. By monitoring the normality of the local replacement unit that is considered to be abnormal, it is possible to determine whether the abnormality is a local replacement unit or a relay replacement unit.