JPS5846759A - Fault replacing system - Google Patents

Abstract

PURPOSE:To relaize an on-line replacement of units without giving any effect to other normal circuits within a unit in case a falut is caused to a circuit within the unit, by using a connector with cable which is capable of a multiple connection. CONSTITUTION:In case a fault arises at a subscriber circuit 6 which is stored in a unit 5, a maintainer connects the unit 5 to a spare unit 15 by means of a cable 8 with connector attached with male and female connectors 11a and 11b. Then the faulty circuit 6 and an idle subscriber cicuit are closed and releases the closure of the subscriber circuit of the unit 15 to secure a call monitoring state. For a subscriber circuit under a busy mode, the same state as that of the unit 5 is given to the subscriber circuit. Then the subscriber circuit of the unit 5 is closed. After this, the male/female connector 11 is pulled out of the connector 1 of the unit 5 to replace the unit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a unit that accommodates a plurality of independent circuits, such as subscriber circuits, and when one or more circuits in the unit fail, other Affects abnormal circuits. The present invention relates to a fault replacement method that allows a unit containing a faulty circuit to be replaced with a normal unit on-twin without any trouble.

In a unit that accommodates a plurality of independent circuits, for example, subscriber circuits, when one or more subscriber circuits becomes a failure, conventionally the following methods are used:
The unit containing the faulty subscriber circuit is being replaced with a normal unit.

(f) When a fault occurs in a subscriber circuit in a unit, the maintenance personnel detects by some means that the fault has occurred in the subscriber circuit, and by operating a command, the faulty unit number, Information such as the faulty subscriber circuit number is notified to the processing device that controls the subscriber circuit, and control of the unit is therefore transferred to the fault replacement mode. The processing device monitors the operation of other normal subscriber circuits in the unit, and blocks the subscriber circuit for a subscriber terminal that is in an idle state, that is, not in a talking state or a call connection state, and returns the subscriber circuit to an idle state. For subscriber terminals that are not present, the primary subscriber circuit is blocked before transition to the idle state. When all the subscriber circuits in the unit are in a blocked state, a maintenance person pulls out the unit and inserts a normal unit based on failure replacement information outputted from the processing device. When a maintenance person operates a command such as terminating fault replacement, the processing device initializes all subscriber circuits in the replacement unit and returns them to normal mode.

(b) In method 0), after blocking the subscriber circuit for subscriber terminals that are in an idle state, for subscriber terminals that are not in an idle state, interrupt the call and call the switch from a talkie device, etc. The unit will issue an alert that the call will be disconnected due to a problem. After a certain period of time, the service becomes vacant and subscriber terminals are forcibly disconnected and blocked. Then, when all the subscriber circuits in the unit are in a blocked state, he performs the same process as method 0).

In the method (f), the maintenance person who transferred the control of the second unit containing the faulty subscriber circuit to fault replacement mode transferred the subscriber terminal accommodated in the faulty subscriber circuit to the fault replacement mode. A switchboard that changes the connection between the subscriber line and the subscriber circuit is used to accommodate the spare unit in the subscriber circuit, thereby restoring the unit to normal operation.

Thereafter, the processing device monitors the normal operation of the remaining subscriber circuits in the unit, and when the incoming and outgoing traffic of the remaining subscriber terminals decreases and becomes empty, the processing device monitors the normal operation of the remaining subscriber circuits in the unit. It blocks all subscriber circuits, outputs faulty replacement information, and instructs maintenance personnel to replace the unit containing the faulty subscriber circuit.

After replacing the unit, wait for the subscriber circuit of the spare unit to transition to the empty state, then block the subscriber circuit, and reconnect the subscriber terminal that had been accommodated in the spare unit at the switchboard. Restore the connection before the failure occurred. In response to a command operation by a maintenance person such as completion of fault replacement, the processing device initializes all subscriber circuits in the replacement unit and returns to the normal mode.

Conventionally, the unit containing the faulty subscriber circuit has been replaced as described above, but this method has the following disadvantages.

In other words, if a subscriber terminal that is currently on a call continues to talk for a long time, the remaining blocked subscriber terminals will be unable to talk to other subscriber terminals. Decrease in litigation revenue due to reduced traffic;
Another disadvantage is that the maintenance efficiency is lowered because the maintenance person is kept on standby until the subscriber terminal in use ends the call.

In addition, in method (-), a call in progress is disconnected at the convenience of the exchange, which has the disadvantage that service to subscriber terminals is degraded.

Also, the method? → has the drawback of requiring maintenance personnel to switch cables at the switchboard in order to restore normal operation to subscriber terminals that are unusable due to a fault, and all subscriber circuits within the unit are blocked. Since there is a high possibility that this happens late at night, when the number of outgoing and incoming calls decreases, there is a drawback that the unit must be replaced in the middle of the night.

The present invention has been made to improve the above-mentioned drawbacks, and its purpose is to repair the unit online without affecting the remaining normal circuits in the unit when a fault occurs in the circuit within the unit. The purpose is to enable replacement. Examples will be described in detail below.

Figures 1 (to) and 1 (to) are perspective views of connectors used to realize the method of the present invention; 1 is a male connector to be attached to the unit; 2 is a male; The lead-out tangent line 6 is the lead-in connection I of the male and female connectors for multiple connections (hereinafter abbreviated as male and female connectors) 11 shown in the figure (to)).
13 is a lead-out tangent that connects with the lead-in tangent of the other male and female connectors; 14 is a lead-in tangent 10.
This is a multi-core cable attached to a male and female connector 11 that transmits electrical information.

Further, Fig. 82 is a block diagram showing an example of the configuration of a device for replacing a unit including a faulty circuit according to the method of the present invention. 16
*26. 7 is a lead-out tangent for connecting the unit 5 to a processing device and a communication path device (not shown); 2o is a subscriber terminal 25 and subscriber circuits 6, 16, 2;
6.36 A switchboard for arbitrarily making the connections; 23 represents a jumper wire connecting the subscriber circuit side terminal 21 and the subscriber terminal side terminal 22; 24 represents the same part. Although the subscriber line 25 is actually a pair of lines, it is shown as a single line in the figure for the sake of simplicity.

5(b) to ρ) are diagrams showing an example of the dormitory management procedure according to the present invention, and 15 indicates four subscriber circuits 106.1.
16, 126, and 136; 7a is a lead-out tangent for connecting the spare unit 15 to a processing device and a communication line device (not shown); 1G is a male connector having the same function as the male connector 1; The same reference numerals as in the other figures in FIG. 2 represent the same parts. The following figure (2) to (to)
The method of the present invention will be explained with reference to FIG.

For example, suppose that the subscriber circuit 6 housed in the unit 5 shown in FIG. 2 (2) has become faulty. Also, at this time, it is assumed that the subscriber circuit 16 is in a busy state and the subscriber circuits 26 and 36 are in an idle state. The maintenance person detects by some means that the subscriber circuit 6 of the unit 5 has failed, and by command operation etc., sends the failure subscriber circuit number to the processing device (not shown) that controls the second unit. , and notify information such as the faulty unit number. Thereby, the processing device is connected to the subscriber circuits 106, 116, 12 housed in the spare unit 15.
6,136 normality of subscriber circuits 106, 11, respectively.
Confirm by the test function provided in 6,126,136. If an abnormality is detected in the spare unit 15, the maintenance person immediately removes it and replaces it with a normal spare unit. If the normality of the spare unit 15 is confirmed, the processing device connects all subscriber circuits 106, 116° 12 in the spare unit 15.
6. Close 136.

After this, the maintenance person installs the connector-equipped cable 8 with male and female connectors 11G111& having the same function as the male and female connectors 11 shown in Figure 1) on both ends of the multi-core cable.
Connect the unit 5 and the spare unit 15 as shown in ) in FIG. After this, the processing device closes off the faulty subscriber circuit 6 and the empty subscriber circuit 26.56, and the subscriber circuit 106, 126.1! of the spare unit 15! +6
When the call is blocked, the call is monitored. Also, for the subscriber circuit 16 in the talking state, read the control information and control the subscriber circuit 116 of the spare w unit 15 to the same state as the subscriber circuit 16. After that, the subscriber circuit 16 occlude. .

After confirming that all subscriber circuits in the unit 5 are blocked, the maintenance person connects the male and female connectors 11 connected to the subscriber terminal and the female and male connectors 11 of the cable with connector 8, as shown in the same figure.
b from the male connector 1 of the unit 5 while still connected, and then replace the unit 5. After this, the processing device processes the subscriber circuits 6 and 1 in the replaced unit 5.
6, 26.56 normality of subscriber circuit 6,
16, 26.36, and if normality is confirmed, all subscriber circuits 6, 16, 26.56 in unit 5 are closed.

Next, the maintenance person inserts the female and male connectors 11.'1'1b in the connected state that were removed in FIG. ,
The processing device is connected to the subscriber circuit 106,1 in the spare unit 15.
Based on the status of units 16, 126, and 136, that is, whether they are busy or idle, switching to unit 5 is performed using the same procedure as when switching to spare unit 15. When the switching is completed, the maintenance person connects the male and female connectors 11a and 116 of the cable with connector 8 connecting the spare unit 15 and the unit 5 to the male connector 1a and the male connector 1a, respectively.
When the male and female connectors 11 are disconnected, the state shown in Figs.

In the example, we have explained how to replace a failure in a subscriber circuit, but it is also possible to use an online system that is used in the same way as a subscriber circuit, for example in an information processing system that uses a central processing unit in time-division multiplexing. It can also be applied to failure replacement of an interface circuit accommodating a terminal device, and its field of application is extremely wide.

As explained above, the present invention provides multiplexing between a terminal such as a subscriber terminal and a plurality of independent circuits such as subscriber circuits housed in a unit with two or more connectors. The connection is made through a connectable connector with a cable (connector 11 in the embodiment), and when a failure occurs in one or more circuits in the unit, a spare connector with a cable is connected to the connector with a cable. (connector 11b in the embodiment), connect the other end of the cable of the spare connector with cable to the spare unit, switch the control from the processing device to the unit online to the spare unit, and after the afternoon Since the system replaces a faulty unit with a normal unit, it can be replaced online without affecting the normal connections of the remaining units in the unit, thus reducing service degradation to subscribers. This has the advantage of being able to prevent failures and also simplifying the task of replacing failures. The cost increase due to the provision of prizes and spare units is almost negligible if the number of units is large.

[Brief explanation of drawings]

Fig. 1 (2), ω) is a perspective view of a connector used in the method of the present invention, Fig. 2 is a block diagram of a device to which the method of the present invention is applied, and Fig. 3 (2) to (to) are a perspective view of the connector used in the method of the present invention. FIG. 1.1α is a male connector, 2, 5, 7, 7a, 13 are lead tangents, 5 is a unit, 6.16, 26, 36. 106.
116, 126.136 is the direction major circuit, 8 is the ・Nectar attached place-bull, 10 is the drawing tangent, 11.1'1a,
11 & are female and male connectors for multiple connection, 14 is a multi-core cable, 15 is a spare unit, 20 is a switchboard, 21 is a subscriber circuit side terminal, 22 is a subscriber terminal side terminal, 25 is a jumper wire 1, 24 is a subscriber line , 25 are subscribers! It's the end. Patent Applicant: 8 Heng Telegraph and Telephone Corporation Representative Patent Attorney Gobe Tam'mushiku I and 3 others) Figure 1 (A) (B) No. 211! !

Claims (1)

[Claims] In the fault replacement method, when multiple faults occur in independent circuits that correspond to a pair of terminals, the unit containing the faulty circuit is replaced with a normal unit. If a fault occurs in one or more circuits in the previous one, the connection is made via a connector with a cable that allows multiple connections with the above connectors. Connect a spare cable row connector i that has the same function as the connector with cable, connect the other end of the cable of the spare connector with cable to a spare unit that has the same function as the unit, and perform processing on the unit. This fault line switching method is characterized in that the control from the previous unit is switched to the previous unit using an olerain, and after that, the unit containing the faulty circuit is replaced with a normal unit.