SU1030995A1 - Device for automatic inspection of individual line and individual line equipment - Google Patents

Abstract

DEVICE FOR MONITORING AVTOMATICHES- WHOM subscriber line and the subscriber set comprising a control unit soed1 | nenny a switching unit and a testing unit, you turn is connected to the recording unit and the switch subscriber sets connected to the switching unit, characterized in that , in order to reduce the monitoring time, the switching unit is made in the form of a local suppression node connected to the analyzer, connector, the first and second code converters, the matching node and the latch, another input This is connected to the first output of the subscriber number register, the second output of which is connected to the second input of the first code converter, and the third to the second input of the second code converter connected to another input and output of the matching node connected to the subscriber set switch, the other inputs and outputs of which are connected to the connector connected to the analyzer and to other input and output of the test block, made in the form of serially connected test signal generator, connected of a software unit, an analog-to-digital converter and operational. i of the storage node, the other input of which is connected to one of the outputs (L of the program node, the other output of which is connected, to the second input of the analog-digital converter, the corresponding inputs and outputs of the control unit being connected to the subscriber number register, about the local control node and the second input and output of the registration unit, the third input of which is connected to the latch output.

Description

The invention relates to telecommunications and can be used to automatically control subscriber lines and subscriber sets of coordinate automatic telephone exchanges (PBX).

A device for automatic control of subscriber and lines of subscriber sets is known, comprising a control unit connected to a switching unit and a test unit whose output is connected to a registration unit, and a subscriber switching unit connected to a switching unit Cij.

However, the known device is characterized by a large amount of time for monitoring subscriber lines and kits. In addition, to solve such problems of optimal control, such as diagnosis and prediction of the network state, advanced planning of rehabilitation works, it is necessary to monitor subscriber lines by such parameters as the amount of insulation resistance of the wires relative to the poles of the station battery and between themselves, determine the state breakage and short circuit. The known device controls the telephone channels only by the residual attenuation and by the signal-to-noise ratio, i.e. The known device is not able to provide the services of operation sufficient for optimally controlling the amount of information. Moreover, the known device is intended only to control telephone channels; b does not have; it is possible for the network to control subscriber sets installed on PBXs, so. as for the monitoring time, the telephone channel is disconnected from the central and response stations.

Application of the known device

To check the subscriber lines, it will be necessary to increase their number to 10,000 for one PBX, since the subscriber telephone lines are individual for each telephone set, and it is not possible to merge them into large groups for which the known device is designed, because of the branched network of the subscriber network . The use of a known device for monitoring subscriber lines will lead to a significant increase in its cost, and the cost of execution units attached to one meter will significantly exceed the cost of the meter, in addition, the switching unit of this device contains a switch that is designed for a relatively small number of channels, however to control subscriber lines you need a com

a mutator designed for 10,000 lines (for one PBX), which will also increase the cost of the device. The use of a device for monitoring subscriber lines will reduce the reliability of the subscriber network by introducing additional contacts of channel sets into the subscriber line, while the channel sets installed from the side of the telephone set require special maintenance.

The purpose of the invention is to reduce control, as well as obtain necessary and sufficient information to optimally manage the process of eliminating subscriber line and subscriber line failures / by increasing the functionality of the device, reducing the test time of subscriber lines and subscriber sets, and then reducing the results test equipment costs.

 For this, in the device for automatic control of subscriber lines and subscriber sets, containing a control unit connected to a switching unit and a test unit whose output is connected to a registration unit, and a subscriber set switch connected to a switching unit, the latter is designed as a local control unit. node; connected to the analyzer, connector, first and second code converters, matching node and clamp, the other input of which is connected to the first output of the subscriber's register pa, the second output of which is connected to the second input of the first code converter, and the third output - to the second input of the second code converter connected to another input and output of the matching node connected to the subscriber unit switchboard, which are connected to the connector connected to the analyzer and another input and output of the test block, made in the form of a series-connected test driver, connected to a software node, an analog-digital converter (A CPU) and a random access memory node (RAM), the other input of which is connected to one of the outputs of the software node, the other output of which is connected to the second input of the ADC, and the corresponding inputs and outputs of the control unit are connected to the subscriber number register, to the local control node the second input and output of the registration unit, the third input of which is connected to the latch output.

Fig. 1 shows a structural electrical circuit of the device for automatically testing the subscriber line of subscriber sets; 2 is an equivalent circuit for measuring the insulation resistance of the wire a relative to the plus of the station battery; in FIG. 3, the equivalent circuit for determining the condition of Oblish and measuring the resistance between the wires a and 6; Fig. 4 shows voltage graphs on the reference resistor in determining the breakage condition and measuring the insulation resistance between the wires Q and D. The device contains a switching unit 1, a test unit 2, a control unit 3, a registration unit 4, a local control unit node 5, subscriber number register b, first code converter 7, second code converter 8, matching node 9, analyzer 10, connector 11, clamp 12, driver 13 test signals, ADC 14, program node 15, RAM 16 and subscriber switch 17 sets, soles of relay th kit (RPA) 18 the code receiver subscriber incoming D; Hunt subscriber (AI) giste ATS, the incoming data register 19 (SRM), devices 20 and 21, the automatic setting data (DSA) and the node device 22 operates as follows. From the control panel of the control unit 3, a four-digit subscriber number is entered in the register b, the first of the number group being checked, and a co-start is started. Unit 3 delivers a control signal to the local control unit 5, which generates control signals for the unit 1 units. On a command from node 5. Connector 11 connects AUD 20 of switch 17 to 1 analyzer 10 and code converter 7, Analyzer 10 determines the state of AUD 20 and, if it is free, on command from node 5, connector 11 takes AUD 20 by setting the body potential in the AUD 20 The converter 7 through the connector 11 supplies to the wire a +, and to the wire to the station battery. After receiving from the analyzer 10 a signal confirming a reliable occupancy of the AUD 20, the node 5 connects to the register 6 a code converter 7, which through the connector 11 supplies to the pierce a and -g of the AUD 20 a series of battery pulses corresponding to the first character of the subscriber number, which selects thousand of the line unit of the subscriber search stage AI 22 of the switch 17. Next, node 5 sends to the code converter 8 and the matching node E a command to charge the remaining three characters. The code converter 8 through the node 9 occupies the RPA 18, which is fixed to the AUD 20 and AUD 21, by supplying a positive potential, after which a signal is transmitted from the RIA 18 to the code converter 8 to transmit the next digit in a partial way. Code converter 8 converts the second character of the subscriber number from the binary-to-decimal number system FROM b and delivers it to the matching node 9, which connects the corresponding sign to this sign. frequency combinations to the input of the RPA 18. Further, from the RPA 18, these signals are fed to the input of the AUD 20 via the connector 11f, i.e. The connector 11 forms a transmission path for the frequency signals meuk at the RPA 18 and the AI 22 step marker, the incoming register of the WFD 19 is mine. Further, upon request, the third and fourth digits of the subscriber number are issued similarly from the RPA 18. After that, from RPA 18, via matching node 9., The End of Connection Establishment signal is sent to Local Control Unit 5. If the connection is not established for any reason, then through; for some time, node 5 repeats the call setup cycle and issues a signal to block 3. At the command of block 3, registration unit 4 displays information about an unset connection, which is used to evaluate the connection setup quality at the subscriber search stage of the PBX. If the connection is established, on command from node 5, connector 11 disconnects the code converter 7 and analyzer 10 from AUD 20 and connects them to AUD 21 of switch 17, and AUD 20 connects 13 test signals to test unit 2, the connection established through AUD 20 is kept from connector 11. Then, following a command from node 5 to latch 12, subscriber number from which register is established via AUD 20 is entered from register b, after which the signal from block 3 registers b to block 1 to the next state and block 1 sets t connection to the next subscriber number via the AUD 21, and in block 2 this command turns on the software node 15 / while establishing the connection through the AUD 21 by the block 1 and testing the subscriber line and subscriber set to which the connection is established via the AUD 20, flow simultaneously .. The program node 15 generates the control signals of the driver 13 test signals, ADC 14 / RAM 16 mounted by the nporpaNMSi. presented in the table. Command 1 is executed by the driver 13 by supplying + over a wire with a Sne shown) to the side of the subscriber set, while in the user kit a separating relay is triggered, which disconnects the winding of the linear relay and the resistor R. from the terminals a and IZ. After a period of time required for the separation relay to work, wires O and, on command from node 15, shaper 13 delivers a negative potential through reference resistors. (-) Stationary batteries, while discharging the capacity of the subscriber line and end a telephoto device detector, and a circuit is created to measure the copro. resistance and insulation of wires Q and o with respect to the positive pole of the station battery (figure 2, circuit: +, Rvib -). After the time required to discharge the capacity of the subscriber line and the capacitor of the calling circuit of the telephone set, the node 15 sends a signal on to the ADC 14 which measures the voltage drop across the reference wire resistor and determines the state of the subscriber line in it. occupied or free). If the subscriber line is free, node 15 sends command 4 to ADC 14 — Measure the insulation resistance value of the wire a relative to the + stationary battery, which the ATC 14 performs by measuring the drop value. the voltage across the reference resistor of the wire a, and if this value exceeds a certain value, the ADC 14 writes to RAM 1 & a damage code corresponding to the reduced GI wire insulation resistance relative to the + station battery. Commands No. 5-8 are executed in the same way, Command No. 9 is executed by the driver 13, which is connected to the a-wire and to the wire through the reference resistor + station battery. This creates a .zar circuit and the capacity of the subscriber line and the capacitor of the ringing circuit of the telephone apparatus (Fig. 3, circuit: wire, a, 1 (Cd +), wire, and P I t 4. 1 -Of KijT Voltage on the reference The wire resistor .c is changed exponentially. A good subscriber line (If graph of Fig. 4) has a capacitance equal to the sum of the capacitances of the line and the condenser of the telephone set (C Sd + Stead.d while the maximum capacity of the subscriber line does not exceed 0 microfarad, the capacity of the telephone is in the range from 0.5 to 1 microfarad, and the subscriber line is broken It is characterized only by a line capacity not exceeding 0.5 μF. Thus, the fixed time of the break line is less than that of a serviceable one (graph 11, figure 4). At time ti, the voltage on the reference resistor of the wire y lower than that of the disconnected one, it is possible to judge the state of the subscriber line by its value.After charging the line capacity and the capacitor of the telephone at the time moment bQ, the voltage across the reference wire resistor characterizes the value of the insulation resistance between wires O and .- and (fig 4 graph III) which leads to an increase in voltage across the reference resistor. After executing # 9, the software node 15 forms in the moments -t and -ti2. commands for determining and measuring the state of the insulation resistance between wires a and -6 (respectively, commands 10 and 11) in ADC 14. If damage is detected, ADC 14 writes the corresponding codes in RAM 16. This completes the test of the subscriber line. The test of the subscriber set begins by connecting to wires a and the windings of the linear relay and resistance R-800 Ohm (command No. 12) by disconnecting the positive potential C from the wire, while the isolating relay is released. Next, the linear relay circuit is monitored (commands no. 13 and 14) by connecting to the wire through the reference resistor + station battery and measuring the voltage drop across this resistor. The command W 15 is executed in the same way. LD1I signal level measurement Answer the station form, tel 13 occupies the subscriber set, while at the lead and given +, 5 ;. and on the wire, the station battery through resistors with a nominal value of 500 ohm, after which, by a command from node 15, the A / D converter 14 measures the actual voltage of the signal from the Response station. Then, following a command from the node 15, the RAM 16 outputs information to the registration block 4 (command 19), after which the node 15 sends a signal to the control block 3 that the test has been completed. If test unit 2 detects damage to the subscriber line or subscriber set, the command from block 3 on} finds registration unit 4, which outputs the seven-digit subscriber line damage number and the damage code to the teletype (or telegraph channel on the computer). After the output of the information is completed and the connection is established via the AUD 21 with a command from block 3, node 5 determines the method of releasing the AUD 20 according to the state of register 6. If the state of register 6 does not correspond to the number of the selected thousand interlaced AI 22 AI block, i.e. In the course of the successive testing of subscriber lines and subscriber sets in register 6, the number of the next AI unit’s 22 thousand line unit is recorded. Then node 5 through connector 11 destroys the connection and erases the information in the AUD device’s 20 ATS counting circuit by breaking the wire, while the connection is established by four digits of the subscriber number.

If the state of register 6 corresponds to the number of the selected thousand of the linear block, then node 5 sends a positive potential to the AUD 20, which results in blocking the state of the AUD 20 device’s counting circuit, then disconnecting the AUD 20 occupancy wire through the connector 11, The counting circuit of the AUD 20 remains unchanged, and the connection is established by the last three digits of the subscriber number. After some time required to destroy the connection (to the verified subscriber number), at the command from node 5

connector 11 disconnects the code converter 7 and the analyzer 10 from the AUD 21 and connects to the AUD 21 the driver 13 of the block 2, and to the AUD 20 it supplies. code converter 7 and analyzer 10, while the connection established via AUD 21 is retained from connector 11. Next, on command from node 5, fixer 12 enters the subscriber number through which the connection is established via AUD 21, then the signal from block 3 - the hub is transferred to the next state, and block 1 establishes a connection to the next subscriber number, and block 2 performs a test of the subscriber line and subscriber set to which the connection is established via AUD 21. Next, the connection set-up and the tests are repeated. At the end

0 checks the specified number group, unit 3 sets the device to its initial state.

The table shows the performance of the test unit and the functional nodes that execute this program.

.Plug on the wires and through the reference resistors of the station battery

Determine the status of

measure the value of the resistance of the ADC 14 wire insulation O relative to the RAM 16 "" + if station battery

ro-ra The discharge of the capacity of the subscriber line and the capacitor of the calling circuit of the telephone apparatus is carried out. A circuit is created to measure the insulation resistance of the wires a and the relative plus of the station battery.

14 The subscriber line's occupancy is determined by the magnitude of the potential on the wire — to g. If the subscriber line is busy / node 15 forms a test signal.

The value of the insulation resistance is determined by the magnitude of the voltage drop across the reference resistor.

2 Measure the insulation resistance of the ADC 1 wire - and relative to the station RAM of the 16 st battery Remove from wires O and 6 and feed the station battery through the reference resistors

Measure the value of the cost of the ADC 14 to isolate the wire d relative to the RAM 16 minus the station battery

Measure the value of the resistance of the wire insulation - relatively - station

.. ..Leat from the wire about - and feed the station battery to the wire;

Determine Cliff State

ten

eleven

Measure the value of insulation resistance between wires a and "

12 Connect the station to the subscriber line

. Feed the wire a +, and ya wire station battery through the reference resistors

Check the linear relay circuit

15

Check circuit R "800 Ohm

Continuation of table

EZZI

-V formatter

Similar to the commands (f 3 and 4

Also

Subscriber line capacity is charged to determine power loss and measure insulation resistance between wires Q and.

14 16

The voltage drop across the reference wire resistor -S f created by the charge current of the capacitance of the research institutes determines this state

14

Determined by the magnitude of the non-voltage drop across the reference wire-6 resistor upon termination of the charge on the line capacitance

This is accomplished by removing the plus from the wire c. subscriber kit

that

FormiroCreated chain checker subscriber 13 subscriber set

Magnitude of the voltage drop across the reference resistor

The same insulation resistance value is determined by the voltage drop across the reference resistor. A circuit is created to measure the insulation resistance of wires 4 and S relative to the minus of the station battery.

16 Supply to wire a +, -a to wire. &Amp; - Station battery through R 500 Ohm

17 Measure the signal level of the station response.

18Remove information in block 4 registration

19 End of measurement The proposed device is an electronic device, made on integrated circuits, which allows controlling subscriber lines and subscriber sets according to the following main parameters: state. That; -resistance of wire insulation q and wire relative to + and battery; insulation resistance between wires a and -e; detecting the presence of a linear-relay circuit and an R-800 Ohm resistance in the subscriber set; signal level Answer station. The device fixes the underpass at the stage of the AI PBX, which allows assessing the quality of the connection at this stage. The average time of use of one subscriber line and subscriber set does not exceed 3s, and the total time of testing one PBX with a capacity of 10,000 numbers does not exceed 8 hours. The test equipment existing at the PBX does not: allows you to monitor the state of the subscriber line and sets with such periodicity, Since the verification of subscriber lines and subscriber sets with one using a measuring and testing table requires more than 30 man-days. The device provides information output on a teletype or via a telegraph channel on a computer in the MTK-2 code, whereby the seven-digit subscriber number of the damaged subscriber line and the damage code are output and reduces the monitoring time. The proposed device does not require installation of execution units. Continued tables

Formed- Circuit is created for the 13-subscriber station subscriber set to receive the station response signal.

from the register

A / D converter 14 By the magnitude of the effective RAM of the 16th value of the signal voltage

Program;

node 15

RAM 16. Program Signal is issued node 15 3 management mand on the part of the telephone set i than achieved a significant skill; / cost of the device, uses; (as the switch two devices of the automatic installation of data (AUD) PBX (switch) can also work through one AUD) ... When the device is connected to the PBX, the device installation work is insignificant, while the introduction of some additional possibilities into AUD, AUD and RIA does not change their algo- rity, which allows operation of the device and the measuring and test table of the PBX through the AUD together. alternate overheads of abrnent lines and subscriber sets; selective testing of one subscriber line, subscriber line and subscriber set; subscriber line check; subscriber line check; subscriber line check and subscriber set. The proposed device allows to obtain the necessary and sufficient information for optimal control the process of eliminating subscriber line failures and subscriber sets, while it can be used both as part of the equipment of technical operation centers and individually for each PBX. The information received from the proposed device allows one to solve such optimal control problems as diagnosing and predicting the state of the subscriber network / warning of failures on the subscriber network and the costs of subscribers, damage accounting, planning of the working day of repair services, design of wrecks. collecting and analyzing statistical information, assessing the quality of connection establishment at the AI stage and

To other links m

Fe / g. etc., while the greatest economic effect is possible when processing information on a computer.

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Claims (1)

DEVICE FOR AUTOMATICALLY CONTROL OF SUBSCRIBER LINES AND SUBSCRIBER SETS, comprising a control unit connected to a switching unit and to a test unit, the output of which is connected to a registration unit, and a subscriber set switch connected to a switching unit, which is connected with me. in order to reduce time. control unit, the switching unit is made in the form of a local control unit connected to an analyzer, connector, first and second code converters, a matching node and a latch, the other input of which is connected to the first output of the subscriber number register, the second output of which is connected to the second input of the first code converter, and the third - to the second input of the second code converter connected to another input and output of the matching node connected to the switch of subscriber sets, the other inputs and outputs of which They are connected to a connector connected to the analyzer and to the other input and output of the test block, made in the form of series-connected shaper of test signals connected to a software node, an analog-to-digital converter, and operational. a memory node, the other input of which is connected to one of the outputs of the software node, the other output of which is connected to the second input of the analog-to-digital converter, and the corresponding inputs and outputs of the control unit are connected to the register 2 rum of a subscriber number, with a local control unit and with a second input and output of the registration unit, the third input of which is connected to the output of the fixer. 1030995. I