RU6486U1 - AUTOMATIC CONTROL SYSTEM OF THE CONDITIONS OF SUBSCRIBER TELEPHONE LINES - Google Patents

Abstract

A system for automatically monitoring the status of subscriber telephone lines, comprising an input-output unit, microprocessor control units with signal input-output and information input-outputs, as well as diagnostic units with stationary and linear inputs and outputs, while the information inputs and outputs of microprocessor control units are connected with stationary inputs and outputs of the respective diagnostic units, the linear inputs and outputs of each of which are connected to the corresponding automatic telephone exchange, characterized in that it further comprises data transmission units installed respectively in each building for automatic telephone exchanges, the input-output unit is made in the form of a personal computer, which is connected via a communication line to the first information input-output and address inputs of the data transmission multiplexer, the second information inputs and outputs of which are signal inputs and outputs of the input-output unit, while the first input-output of each data transmission unit is connected to the corresponding the signal input-output of the input-output unit, and the second input-output of each data transmission unit is connected to the signal input-output of the corresponding microprocessor control units.

Description

System of automatic control of the state of subscriber telephone lines.

The utility model relates to telecommunications and can be used to automatically monitor the status of subscriber telephone lines, determine the nature and location of the malfunction from the central control unit

From the prior art, a system is known for automatically monitoring the status of subscriber telephone lines (see copyright certificate OGCP Л 26Ь961, CL Н04М 3/22 1967), containing a control unit connected to a switching unit and to a test unit, the output of which is connected to the registration unit, and a subscriber kit switch connected to the switching unit.

However, the known system is characterized by a large investment of time for monitoring subscriber lines and sets. In addition, to solve such optimal control problems as diagnostics and forecasting the state of lines, long-term planning of restoration work, it is necessary to control subscriber lines by parameters such as the value of insulation resistance of wires relative to the poles of the stationary battery and among themselves, to determine the state of breakage and short circuit. The well-known system provides control shedding only by residual attenuation and the signal-to-noise ratio. In other words, the known system does not provide information sufficient for the optimal operation of the central control unit.

- g cd.NJJ 3 / 22,1993 g.) taken as a prototype and containing an input-output unit, a central control unit, A / peripheral control units, S + 1 diagnostic unit, madem and peripheral channel, and each control unit includes a microprocessor, the inputs and outputs of which are connected by a system line in the inputs and outputs of the memory unit, the central inputs and outputs of the serial interface unit and with the stationary inputs and outputs of the corresponding diagnostic unit, the linear inputs and outputs of which are connected to subscriber telephones real lines. In addition, the central control unit also includes an input / output controller and a state receiver, while the first inputs / outputs of the input / output controller and the central inputs / outputs of the state receiver are connected to the system bus of the central control unit, and the second inputs / outputs of the input / output controller are connected with inputs and outputs of the input-output unit. The first signal inputs and outputs of the peripheral control units, which are the inputs and outputs of the corresponding serial interface units, are connected via the peripheral channel to the inputs and outputs of the serial interface unit of the central unit. Each peripheral control unit also includes a fault recovery unit, the first and second outputs of which are connected respectively to the first and the second control input of the microprocessor of the corresponding peripheral control unit, the inputs of the failure recovery unit soy ineny backbone corresponding to the system control unit. The third outputs of the failure regeneration units are the second signal outputs of the peripheral control units and are connected to the corresponding inputs of the state receiver. The stationary inputs and outputs of the modem are connected to the system trunk of the central1 control unit.

- 8 complex construction due to the presence of two physical communication lines between the central and each peripheral control unit.

The utility model is based on the task of developing a system for automatically monitoring the state of subscriber telephone lines, the constructive implementation of which would ensure its simplification.

The problem is solved in that a system for automatically monitoring the status of subscriber telephone lines, containing an input-output unit, microprocessor control units with a signal input / output and information inputs / outputs, as well as diagnostic units with stationary and linear inputs and outputs, while information inputs - the outputs of the microprocessor control units are connected to the stationary inputs and outputs of the respective diagnostic units, the linear inputs and outputs of each of which are connected to the corresponding automatic telephone exchange, according to a utility model, further comprises data transmission units installed respectively in each building for automatic telephone exchanges, the input-shutter unit is made in the form of a personal computer, which is connected via a communication line to the first information input-output and address inputs of the transmission multiplexer data, the second information inputs-outputs of which are signal inputs and outputs of the input-output unit, while the first input-output of each transmission unit is nnyh connected to the corresponding signal input-output input-output unit, and second inputs and outputs of each data transmission unit are connected to signal inputs-outputs of the respective microprocessor control units.

This embodiment of the system provides a simplification of its design by reducing the number of physical communication lines.

& / 0tfS4

- 4 The system of automatic monitoring of the state of subscriber telephone lines contains an I / O unit 1 located in the central repair office on the communication center, data transfer units например (for example, a modem) installed one on each building 3 in which automatic telephone exchanges (PBXs) are located 4 , and devices 5 for managing subscriber telephone lines, while on each PBX 4 no more than two devices 5 are installed.

The input-output unit 1 includes a personal computer, for example, XSh RS / AT-286, which is connected to a higher-level computing complex via the first communication channel 7, and is connected to the first information input-output and address inputs of the transmission multiplexer 9 through the second communication channel 8 data, the second information inputs and outputs of which are the signal inputs and outputs of the unit 1 input-output. The first input-output 11 of each data transmission unit Z is connected to the corresponding signal input-output Yu of the input-output unit 1 by means of a two-wire physical communication line

Each subscriber telephone line control device 5 contains microprocessor control units 12, the signal input-output of which is connected to the corresponding second input-output of the data transmission unit 2 installed in the same building, as well as a diagnostic unit 13, whose stationary inputs and outputs are connected to the information the inputs and outputs of the control unit 12. The linear inputs and outputs of the diagnostic blocks 13 are connected to the corresponding PBX 4. The specific circuit design of the interface node blocks 13 with the PBX 4, and

the algorithm for connecting to a specific subscriber line is determined by the type of ATS 4 and therefore is not the subject of this utility model.

- b At the stage of preparing the system for work, its configuration is determined, namely: each communication channel is assigned a PBX number 4, which will be controlled via this channel, and the speed of information exchange on each channel is also established.

In the individual subscriber line check mode, the operator enters the subscriber’s telephone number containing the PBX number by which the channel number is determined in accordance with the system configuration. After that, the readiness request signal is sent to the multiplexer 9, and when a ready signal is received, a control signal (word) is transmitted, with the help of which a given communication channel is programmed. Then, along the second communication channel 8, a signal is sent that the communication channel is ready to work with the device b of the specified exchange.

The exchange of information between a given device 5 and personal computer b takes place according to the algorithm shown in FIG. 2, while the personal computer b with respect to the devices 5 is an active unit, in other words, the dialogue initiative belongs to the computer 6.

The communication signal 8 transmits a readiness code signal of the readiness of the given device b, while the request signal first arrives at the first information input-output of the data transmission multiplexer 9, then the signal is supplied from the corresponding second information input-output of the multiplexer 9 to the first input-output 11 of block 2 data transmission installed in the building where the desired telephone exchange is located. Moreover, all the devices b connected to the second inputs and outputs of the given data transmission unit находятся are in a state of waiting for a command from the input / output unit 1, in case of a coincidence of the request signal code with the code of the device 5, the readiness signal of device 5 is generated, which is the same the communication channel enters block 1.

W / o / em

- 6 After receiving the readiness signal of this device, a signal is generated and transmitted to execute one or another command. With the correct reception of a signal for the execution of a given command, a signal is generated and transmitted about the correct reception of the command, after which the device 5 disconnects from the communication channel and proceeds to its execution. Depending on the type of command, the type of employment of the subscriber set (local or long distance connection), malfunction (short circuit on the line and at the station, extraneous voltage on the line), the state of the off-hook handset, and the subscriber complex (AK) are not interrupted. To determine the place of a short circuit and the condition of a removed tube, it is necessary to have constant voltage short circuit on the line for each AK or the value of the loop resistance. Therefore, in this case, the voltage on the line is measured and then transferred to block 1 for comparison with a constant from the database. If the AK is in a free state, it is disconnected from the PBX and the electrical parameters are removed according to the full program. The measurement results and a digital code are recorded in the memory block of the microprocessor control unit 12 and stored there on demand by the commands of blocks 1, while the device 5 goes into a waiting state for the continuation of the dialogue, in block 1 a signal of the readiness of measurement results is generated and sent, in turn in device 5, a readiness request signal is generated and sent to receive the data array, and after receiving the Ready signal, the measurement results are transmitted. After receiving information on the side of block 1, a signal about the correct reception is generated and transmitted, after which the device 5 enters the standby state of a new command

Checking a group of subscriber lines is carried out, as a rule, at night. The group of subscriber lines and its composition is determined by the operator in accordance with the need for cable line south-route.

In this test, the connection to the AK is carried out in turn and the absence of extraneous polarities is checked (% on the telephone exchange, on the line, on the telephone exchange, on the line) Measurement of the insulation resistance of the wires to the positive side is carried out. batteries (each wire separately) and paired between wires. The procedure for transmitting measurement results is similar to that described above.

System operation with a computer complex (CMM) of the upper level.

Information is exchanged with a top-level ESh via channel 7. After a command is received from a top-level ESh in block 1, the system operates similarly to that described above, as when entering control commands from the terminal of block 1.

Thus, the proposed system provides the ability to connect to an arbitrary subscriber line of any of the PBX node included in the system to determine its status, nature and location of the malfunction

- 7.

Claims (1)

A system for automatically monitoring the status of subscriber telephone lines, comprising an input-output unit, microprocessor control units with signal input-output and information input-outputs, as well as diagnostic units with stationary and linear inputs and outputs, while the information inputs and outputs of microprocessor control units are connected with stationary inputs and outputs of the respective diagnostic units, the linear inputs and outputs of each of which are connected to the corresponding automatic telephone exchange, characterized in that it further comprises data transmission units installed respectively in each building for automatic telephone exchanges, the input-output unit is made in the form of a personal computer, which is connected via a communication line to the first information input-output and address inputs of the data transmission multiplexer, the second information inputs and outputs of which are signal inputs and outputs of the input-output unit, while the first input-output of each data transmission unit is connected to the corresponding the signal input-output of the input-output unit, and the second input-output of each data transmission unit is connected to the signal input-output of the corresponding microprocessor control units.