SU902308A1 - Device for monitoring calls of switching stations - Google Patents

Description

54) DEVICE TO CONTROL CALLS OF COMMUTATION STATION

one

The invention relates to telecommunications and can be used to control the quality of service on switching telegraphs and. telephone stations x.

A device for controlling calls of a switching station is known, which contains a call counter and a fault counter Ln combined by the installation inputs.

However, the known device has low efficiency and low accuracy of control.

The purpose of the invention is to improve the accuracy of control while reducing its time.

The goal is achieved by the fact that the first decoder and the second decoder, switch, coincident unit, synchronization unit and delay unit are inputted to the call station control device containing the call counter and the failure counter combined, and the delay block output connected to the installation input of the call counter, the output of which through the first decoder is connected to the corresponding inputs of the coincidence unit, and the output of the failure counter is connected to the input of the second wow decoder.

The drawing shows the structural electrical scheme of the proposed

10 devices.

The device for monitoring calls to the station KONjMyTauHH contains a counter 1 vyzzo 5ov, a counter 2 failures, the first and second decoders 3 and 4, block 5

synchronization ts, coincidence unit 6, switch 7, delay unit 8.

The device works as follows.

At the beginning of the measurement cycle counter

Claims (1)

1 call and counter 2 failures set to the original state. Call and refusal signals from the switching station devices arrive at the inputs of counters 1 and 2, which store information about the number of calls and failures until the end of the measurement cycle. Depending on the number of calls, one or several outputs of the decoder 3 continuously generate a signal that the number of calls falls into a certain zone. Similarly, a signal is generated at the outputs of the decoder 4, indicating that the number of failures in a certain zone is found. The outputs of the decoder 4 through the switch 7 are connected to the inputs of the block 6 of coincidence. Depending on what percentage of failures need to be monitored, the corresponding outputs of the zones of the decoder 3 and the decoder 4 are connected to one of the schemes of block 6 matches For any numbers of calls from 10 to 999 and any numbers of failures from 1 to 99 always on one of the block diagrams 6, a signal is generated More (exceeding a specified percentage of the number of failures), or a signal Less than (no exceeding). However, at the output of synchronization unit 5, these signals are generated only when a signal arrives at its input. Request from control devices of a switching station or from technical personnel (for example, an hour after the beginning of counting the number of calls and refusals). Thus, the quality of service can be monitored at any given time, including during the period of high load (PPN). The signal of the result of the comparison — Greater or Less — goes to the signaling (indication) and registration devices of the switching station. The same signals through the block 8 of the support arrive at the installation inputs of the counters 1 and 2 of calls and failures and set them to their original state. Counters 1 and 2 are ready to receive new information. The technical and economic effect of the proposed device lies in the fact that the introduction of new blocks (a coincidence unit, two decoders, a switch, a synchronization unit and a delay unit) and their connection therein significantly improves the accuracy 84 and the efficiency of service quality control compared to known devices. The duration of the interval during which the monitoring is carried out can be set exactly what the technical staff needs to quickly assess the quality of service. In contrast to known devices, this duration does not depend on the flow rate of incoming calls, which makes it possible to obtain a reliable estimate of the quality of service with much greater accuracy. The high accuracy and speed of control is confirmed by linear tests of traffic detection equipment (APT) for the AT-PS-PD telegraph station, in which the proposed device is used. This device, in addition, has another advantage with a significantly smaller amount of equipment compared to the base object, which can be selected as a device developed at our enterprise as an intermediate option in the process of creating the aforementioned APT equipment. Claims A switching station call monitoring device comprising a call counter and a failure counter combined by installation inputs, characterized in that, in order to improve the control accuracy while reducing its time, the first decoder and the second connected decoder, switch, block of coincidence are entered, the synchronization unit and the delay unit, while the output of the delay unit is connected to the installation input of the call counter, the output of which is connected to the corresponding through the first decoder conductive inputs matcher block, and failure counter output is connected to the input of the second decoder. 1 Sources of information taken into account during the examination 1. UK patent No. 1502415, cl. H 4 K, 1978 (prototype).