SU1555906A1 - Device for monitoring communication channels - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to increase the reliability of the control. The device comprises a channel parameter verification block, an information transmission control block and a memory block. The device operates in two modes: checking channels and their linear sets and monitoring the status of information transmission over the channel. In the first mode, the control of the correctness of the passage of linear signals (busy, ready to dial a code, ready to dial a number, the subscriber is free, busy, answer, hang up, make a call again)

control of the passage of dialing pulses and the level of the tonal frequency

control deviation from the residual attenuation in the channel or line in each direction of transmission

control of excess voltage noise in the channel or line in each direction of transmission. In the second mode, the duration of the transmission of information on the occupied channel is determined by detecting the required potential on the corresponding wire of the linear set. The goal is achieved by detecting all the damage that leads to loss of functionality in the communication channel and its linear set, as well as in the switching system in which the channel is turned on. 1 hp f-ly, 1 ill.

Description

The invention relates to telecommunications and can be used to automatically search for the inoperability of communication channels and their linear sets.

The purpose of the invention is to increase the reliability of the control.

The drawing shows a structural electrical circuit of the proposed device.

The device for monitoring communication channels contains a unit 1 for checking channel parameters, a unit 2 for monitoring information transfer and a unit 3 for memory, a receiving unit 1 for checking channels consists of a control unit 4, a channel connecting unit 5, a matching unit 6, a channel identification unit 7, a unit 8 time controls, a pulse sensor 9, a fault recording block JO, a printing block P, a voltage control block 12 and a time signal sensor 13, and the information transmission control block 2 consists of block 14

control of the potential, the generator of 15 pulses, the first element And 16, the counter of 17 pulses, the one-vibrator 18 and the second element And 19.

The device operates in two modes: checking channels and their linear sets and monitoring the status of information transmission over the channel.

In the first mode (check channels), the device for monitoring communication channels through a switching device (not shown) connects to linear sets of channels and monitors the correctness of the passage of linear signals (busy, ready for dialing code, ready for dialing, the subscriber is free, busy then, answer, hang up, re-send the call), control the passage of dialing pulses and the level of the tone frequency of 1200 Hz, control deviations from the norm of the residual attenuation in the channel or line in each direction of transmission, ol exceeding a normal voltage noise in the channel or line in each transmission direction. The control of residual attenuation and noise voltage is performed using a similar device located on the opposite side, or an answering machine included in the PBX set.

The device in the first mode works as follows.

After start-up, the channel connection unit 5, on command from the control unit 4, transmits, on its output chains, signals to a switching device for connecting a predetermined channel. After the channel is connected to the device input, the block 6 of the matching receives a signal through one of the input circuits, and the block 6 begins to try the channel states. If the channel is busy, a signal is sent from block 6 to block 4, and block 4 transmits to block 5 a command to switch to the next channel. The relay channel is blocked, block 4 transmits to the damage recording block 10 the required information, which is transmitted to print in block 11 and then switches to the next channel. If the channel is free, it begins checking. The required test data (counter station type, channel attenuation and noise voltage) form

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Route in channel identification block 7 by the channel number transmitted from block 5 and transmitted to block 4.

Then block 6 occupies the channel along the input circuit. Block 4 starts checking the channel, having received the corresponding signal from block 6. At the same time, block 4 sends the appropriate linear signals and the answering machine number to the channel via the circuit connecting it to block 6. The number of the answering machine is transmitted by decade code pulses of the tone frequency or direct current, which are generated by the pulse sensor 9. After the connection to the answering machine is established, the block 4 with the help of the voltage control block 12 conducts the detection of the noise and attenuation voltage of the channel. When violations are detected at any verification phase, the corresponding information is transmitted to the damage recording unit 10 and printed by the printing unit 1J.

In addition, with the help of the time control unit 8, the waiting time of a particular signal from a channel or a communication line is limited. If the time allotted for waiting for a signal expires, then the corresponding signal arrives; from block 8 to block 4, which gives the command to block 10 to print a message about this. When printing damage messages, information about the time of its detection is also printed, which is generated by the sensor 1 3 time signals. Thus, all channels are checked, and after checking the last channel connected to the monitoring device, the test cycle repeats, starting with the first channel. There is also the possibility of checking the selected group of channels or just one channel.

Although the inputs and outputs of the linear sets of communication channels each contain several electrical circuits (wires) that perform certain functions (transmission of information, linear signals, information about the free or busy set), however, in order not to complicate the image, the device input, by which it is connected to the linear kit is shown as one line.

In the second mode, the device for controlling communication channels determines, using the information transmission control unit 2, the duration of the transmission of information on the occupied channel by detecting the required potential on the corresponding wire of the line set. Most often it is the potential from minus 20 to O B on the wire and the conversational circuit. If the duration of the information transfer is less than the specified one, the device switches to the next channel. If the duration of the information transfer is equal to the set one, then the next mark in memory block 3 is made, and then, not waiting for the moment of the transmission of information on this channel, the device switches to the next channel, which does not have a mark in memory block 3 No information transfer with a duration longer and different set. Such monitoring occurs cyclically, with the number of channels monitored decreasing with each cycle,

 At a predetermined time interval Tk, the unit 1 for checking the channel parameters polls the memory unit 3 and prints the channel numbers that do not have marks in the memory unit 3 about the presence of the information transfer state with a duration greater than or equal to the specified one.

The device in the second mode works as follows.

If the personnel servicing the device starts it to work in the second mode, then, as in the first mode, it is connected to the linear set of the channel. Block 6 determines the channel status and, if the channel is idle, switches to the next channel. If the channel is busy, then, after receiving the relevant information from block 6, block 4 starts block 2 of the control of information transfer and block 8

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A permission is issued for the operation of block 2, in which the isolator 18 produces a pulse, transmitting to block 3 of memory through the second element 19, if the output signal of the counter 17 has an enable signal, i.e. transmission duration is equal to the specified. By the falling edge of the pulse of the one-shot 18, the counter 17 is reset.

After the end of the time interval. T “from block 8 receives the corresponding signal to block 4 and the printout of channel numbers with a transmission time shorter than specified occurs.

The proposed control device makes it possible to detect almost all the damage that leads to loss of functionality in the communication channel and its linear set, as well as in the switching system in which the channel is turned on. Since the operation does not create additional load on the channels, the device for monitoring communication channels can operate during high load hours without deteriorating the quality of service for calls received from users.

Formula of invention

A device for monitoring communication channels, comprising a channel parameter verification unit consisting of time signal sensors, a time control unit, a voltage control unit, a serially connected channel connection unit and a channel identification unit, and a serially connected matching unit, the first input of which is The input of the device for controlling communication channels, the output of which is the second output of the channel connection unit, the control unit,

time control. In this case, in block 2, 45, a damage recording block and a print block,

if the potential control unit 14 determines the presence of a potential corresponding to the step of transmitting information in the channel, pulses from the generator 15 are received at the input of counter 17 through the first element 16. Thus, the duration of the transmission of information over the channel is determined. As soon as the time allotted for monitoring the state of the channel elapses, the corresponding signal arrives from block 8 to block 4 and a switch to the next channel takes place. At the same time, on the eighth output of block 4, the output of the time signal sensor is connected to the second input of the damage recorder, the third output of the channel connection unit is connected to the first input of the voltage control unit, and the second, third, fourth, fifth and sixth outputs and the second, third, the fourth and fifth inputs of the control unit are connected respectively to the input

time control unit, with pulse sensor input, with second input of voltage control unit, with input of channel connection unit, with second input of matching unit, with output of block

time control, with the output of the pulse sensor, with the output of the voltage monitoring unit and with the output of the channel identification unit, characterized in that, in order to increase the reliability of the control, serially connected information transmission monitoring unit was inserted, and the memory unit, while the output and the second the input of the memory unit is connected to the third input of the damage recording unit and to the seventh output of the control unit, the eighth output of which is connected to the first input of the information transmission control unit 55, which has a separate input n to the second output matching block.

2. The device according to claim 1, of tl and - which is due to the fact that the control unit

Editor M.Blanar

Compiled by V. Slepakov

Tehredm.Didyk Corrector T.Naleg.

Order 565

Circulation 526

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

The information transfer role contains a one-shot, a potential control and information transfer unit, a pulse generator connected in series, a first AND element, a pulse counter and a second AND element, the output of which is the output of the information transfer control unit, the first and second inputs of which are respectively the one-shot input and the input of the control unit of the potential, the output of which is connected to the second input of the first element I, the third input of which is connected to the second input of the pulse counter and to the input of the one-shot, trans first and second outputs which are respectively connected to the third input of the pulse counter and a second input of the second element I.

Subscription

Claims (2)

Claim 1. A device for monitoring communication channels, comprising a channel parameter checking unit, consisting of time signal sensors, a time monitoring unit, a voltage monitoring unit, a channel connection unit and a channel recognition unit connected in series, and a matching unit, the first input of which is the input of the device, for monitoring communication channels, the output of which is the second output of the channel connection unit, a control unit, a damage recording unit and a print unit, the output of the time signal sensor nor connected to the second input of the fault recording unit, the third output of the channel connection unit is connected to the first input of the voltage control unit, and the second, third, fourth, fifth and sixth outputs and the second, third, fourth and fifth inputs of the control unit are connected respectively to the input of the control unit time, with the input of the pulse sensor, with the second input of the voltage control unit, with the input of the channel connection unit, with the second input of the matching unit, with the output of the unit G555906 time control, with the output of the pulse sensor, with the output of the voltage control unit and with the output of the channel recognition unit, characterized in that, in order to increase the reliability of the control, series-connected information transmission control unit and a memory unit are introduced, with the output and the second the input of the memory unit is connected respectively to the third input of the damage recording unit and to the seventh output of the control unit, the eighth output of which is connected to the first input of the information transfer control unit, the second input of which is connected a second output matching block. 2. The device according to claim 1, which is related to the fact that the control unit for transmitting information contains a single vibrator, a unit for monitoring potential and transmitting information, a pulse generator connected in series, a first element I, a pulse counter, and the second element And, the output of which is the output of the information transfer control unit, the First and second inputs of which are the input of the single-vibrator and the input of the potential control unit, the output of which is connected to the second input of the first element And, the third input of which is connected to the second input ode to the pulse counter and with the input of a single vibrator, the first and second outputs of which are connected respectively to the third input of the pulse counter and to the second input of the second element I.