JPS58170271A - Switchboard controlling system - Google Patents

Abstract

PURPOSE:To confirm the state of power supply in applying and the failure in generating of each switchboard, by providing a means discriminating the response from a switchboard for a response refuesting signal to the switchboard. CONSTITUTION:Call information of switchboards T1-Tn passes through a multiplexer/demultiplexer via subscriber circuits SLC for the switchboards and is connected to a network NW of the exchange side on a highway HW. Control lines (a), (b) are connected to a board interface circuit BDI in a switchboard controller TCTL, and a control signal is controlled with a control section MPU and a memory MEM. The device TCTL sets the content of memory representing the loading/unloading information of the boards and the state of power application initially. The response requesting signal is transmitted in order to the boards, and whether or not the response from the boards T1-Tn exists within a prescribed time for the response requesting signal, allowing to discriminate the state of power supply application and failure.

Description

DETAILED DESCRIPTION OF THE INVENTION α) Technical field of the invention The present invention relates to a switchboard control device, a switchboard, and an O-in/I interface. Oribetsu and power-on status (Pv@r 0N
10FF) Regarding the switching board control method for O identification.
``e visit.

(2) Prior Art and Problems In general, a plurality of switchboards are installed depending on the scale of the exchange V-stem that uses the switchboard, and are connected to the switchboard main body via a switchboard control device.

FIG. 1 is a schematic configuration diagram for explaining the conventional switchboard control system. In the figure, NW is a switching network, 8U
l is subscriber telephone, CC is central controller, TTY is typewriter, TCTL li switchboard controller, ? , -T
n indicates a switchboard. The switchboard control device TCTL is configured one-to-one or one-to-multiple with respect to the switchboard T, but in this embodiment, an example of one-to-multiple is shown. When the replacement V-stem is started up and is in operation, when information on the dormitory scissors/mistaken scissors of the exchange board is input from a typewriter etc., the central controller CC transmits the information to the switchboard controller TCTL. Send to. Switchboard controller TCTLu, this sent 911
1! We will test the switchboard according to the lil/Yoneryo scissors information.
Each switchboard sends the power-on status (VH source on/off status 1t) # signal! 11Ct～C! 1 is sent to the switchboard controller TCTL and displayed on the display register R@H.

Therefore, the switchboard control device TCTL realizes that the previous dormitory vt/red mounting information is not implemented, and the power is turned on (input) and sends a response request signal sequentially assigned the switchboard number m to the nine switchboards via the control line. The response signal is controlled within a certain amount of time from each switchboard! If the switch did not return to 11ia, the switchboard without the response signal was recognized as a failure. Note that the communication lines are omitted in FIG. 1.

With the above control method, even if the switchboard is implemented by commands, it is necessary to identify whether it is implemented physically or not. 11
It requires signal lines C1 to C1 to indicate the status of M input, which is not only uneconomical but also requires frequent wiring work when a large number of units are replaced.

2 (,)□. 1. The purpose of the present invention is to provide a control system for the switchboard that eliminates the above problems by determining the power-on status of the switchboard using the control line and detecting the board. be.

(4) Structure of the Invention In order to achieve the above object, the present invention provides a switchboard control device that exchanges control information with n switchboards (m is 1 or more), which sends a response request signal to the switchboard. and a means for identifying a response from the switchboard to the response request signal, which recognizes that the switchboard is powered on when the response is the first response, and recognizes that the switchboard is powered on when there is no response to the response request signal thereafter. It is characterized in that it is determined that a fault has occurred in the switchboard.

(5) Examples of the invention Hereinafter, the present invention will be explained in detail with reference to Examples.

FIG. 2 is a schematic diagram illustrating the switchboard control system of the present invention. In the figure, the same reference numerals as in FIG. 1 indicate the same objects. Note that S indicates a communication line.

The present invention makes it possible to identify the power-on status of the switchboard and the failure status using the control lines a and k based on such a configuration.

FIG. 3 is a block diagram showing the relationship between the switchboard and the switchboard control device shown in FIG. 2 in further detail.

In the figure, the call information on the switchboard TI is the subscriber circuit S for the switchboard.
Via the LC, it passes through the multiplexer/demultiplexer, and then onto the highway HW, and is connected to the network (time division shown in this example) on the P exchange side NWK.

On the other hand, the control lines a and l+ are controlled by control signals input to the board interface circuit BDI in the switchboard controller 'rC'rL by the control unit MPU and the MIM. Highway H
The interface circuit IN on W is composed of, for example, an inserter and a dropper circuit, and receives or sends out time information within a predetermined highway via the line interface circuit LNI, and sends it to the central control unit on the exchange side. C
It exists to exchange information with C.

Based on the above configuration, the switchboard controller TCTL initializes all memory contents indicating installation/uninstallation information and power-on status of the switchboards T and -Tn when starting up the system. After that, response request signals are sequentially sent to the descendant switchboards T and -Tn, and it is determined whether or not there is a response from the switchboard 1 within a certain period of time based on the response request signal, and the power is turned on and the fault is detected. Determine the situation.

In Figure 0, which is a time chart explaining the control method of the present invention, the TI side has a switching board connected to the TCTL.
indicates the switchboard control device side, and indicates the passage of time from the top to the bottom. When the switchboard control device TCTL is powered on and started up (IpL; initial program load), all the installation/uninstallation information of the switchboard is set to the installed state during the initial setting (during IPL) of ■, and the power stage 41 ( ) on the switchboard is turned off.

Next, as shown by (3), a response request signal is sent to each exchange TI, and responses within one running time are monitored.

If the switch Tl has not been powered on yet, there is no response operation to this response request signal (■), which is a rounded no response (■). Therefore, the switchboard controller TCTL detects no response within a certain period of time and considers that the switchboard is not powered on.

When the switchboard TI detects the response request signal ■ for the first time after being powered on ■, it returns a response ■. Switchboard control device TCTL
sends a response request signal (2), and when it detects a response (2) within a certain period of time, it checks whether this response is the first response in internal processing (3). That is, if the current power-on status of the switch Tl is in the OFF state, it is determined that the power is turned on to this switch TI upon the response from the switch T1 (the first response), and the power-on information is set to the ON state. shall be. In the subsequent exchanges between the switchboard control device TCTL and the switchboard 〒1, in response to the response request signal sent O, a response ■ is detected ■, and the power-on information is in the ON state of 1° and there is a response, so the switchboard 'r1 You can confirm that it is working properly.

On the other hand, if a failure occurs in the switchboard TI and the switchboard controller TCTL cannot send a response signal to the response request signal sent @ (no response @), the switchboard controller TCTL does not respond within a certain period of time. The system detects that a switch TiK failure has occurred because the power-on information is on and there is no response. Figure IIE5 shows the specific processing configuration of this control method.
41IVC No. 3111 In Figure 0, which explains the operation of the memory MEM and the control unit, the information in the memory MICM includes mounting/unmounting information E and power-on information P corresponding to the switching board (4=0 to φn). ) K stored O R1
, R2, R3.R4 is a register; C is a counter that counts for a certain period of time and sets the contents of register R4 in the register 82 upon timeout; LU is an arithmetic circuit; and CMP is a circuit for determining normality and abnormality. The number marked with ○ is located at 11 in Figure 4. First, at the time of initial startup of the switchboard controller τCTL, all the installed/uninstalled information E is in the installed state (for example, "ll" setting, etc.), and all the power-on information P is in the off state (for example, "
01 setting, etc.). If the switchboard TI is not powered on yet, it will not respond to response requests, so
Information set in read-ready register R from power-on information E (off state a = “O”) to interface circuit BDI
(See FIG. 3), when the face-taking information is not detected and the timeout occurs, the arithmetic circuit ALU calculates the information stored in the register R2 from the register R4 (no response -601), and as a result, it is determined that there is no change (2). On the other hand, when response ■ is detected, information 10'' set in register R, and register R
The calculation result of information 111 (response) set to 2 is changed to 7.
Since there is a change from 0 to 1, the setting information of register R3 (power-on state - 1") is stored in the corresponding area as the first response (2).

Next, when the switchboard is normal, there is a response to the response request signal transmission [share], and there is a response with the power-on state II "1".
1", it is determined to be normal [phase]. If an abnormality occurs, a change is detected by the no response 101, and it is determined to be abnormal.

The following table shows this decision logic.

table In this embodiment, the on state when the power is turned on is "1".

Off state is @θ″, response is l”, no response is 408
However, it is not limited to this setting value. worn,
In the present invention, the mounted/unmounted information can be unconditionally controlled by response information except for the mounted state and the troublesome input of commands by the operator when the switchboard control device is started up. Receives and sets implementation information from the central controller,
The determination may be made by further adding implementation information to the control of the present invention.

(-Effects of the Invention As explained above, according to the present invention, multiple power-on situations and failures occur by detecting a response signal via the control line or detecting no response for a certain period of time, including when a switching board is installed or uninstalled. This makes it possible to check the status and eliminates the need to supply power-on information via a separate signal line, which was the case in the past, making it possible to realize switchboard control that is extremely economical and operationally effective.

In addition, management using a medium heat control device or the like becomes easier.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram explaining a conventional switchboard control system, Fig. 3 is a detailed block diagram of an embodiment of a system to which the system of the present invention is applied, and Fig. 4 is a block diagram of the system according to the present invention. FIG. 5 is a processing block diagram of the present invention. '11゜TCTL; Switchboard control device 嘗1''nj Switchboard a, b;
Control line MPU; Control unit MEM; Memari agent Patent attorney Koji Matsuoka-j・P TCTL Hata 3 Dormitory 4

Claims (1)

[Claims] In a switchboard control device that exchanges control information with an O switchboard (one or more for crows), it sends a response request signal to the switchboard and identifies a response from the switchboard in response to the response request signal. means for recognizing that the switchboard has been powered on when a request response is the first response, and determining that a call has occurred in the switchboard corresponding to the meeting if there is no response to the O response request signal thereafter. A switchboard control system featuring: