SU1158016A1 - Device for receiving user's answer signal - Google Patents

Abstract

The invention is not compatible with telephony and can be used in quasi-electro-automatic telephone exchanges. The purpose of the invention is to increase the reliability of receiving a subscriber response signal. The device contains a subscriber switch 1, block 2 of the switching circuit of the call ring, sensor 3 of the line loop condition, block 4 of scanning, voltage divider 5, threshold block 6o When the subscriber responds during the call sprinkling, the threshold voltage is triggered, supplied from the divider 5 and part of the ringing signal voltage, eliminates the influence of the change in the voltage of the homing signal on the accuracy of the threshold unit 6, which increases the reliability of the reception of the subscriber response signal. The signal from the threshold unit 6, in which the co-response of the subscriber has been recorded, causes the ringing circuit in block 2 to open and block 4 to turn on. When the subscriber's F response pauses between the send messages, sensor 3 triggers, and the signal from the block 4 turns on. 1 silt

Description

The invention relates to the field of telephony and can be used in quasi-electronic automatic telephone exchanges.

The aim of the invention is to increase the reliability of receiving the response signal.

The drawing shows a structural electrical circuit of the device receiving a subscriber response signal "

The device for receiving a subscriber response signal contains a subscriber switch 1, a switching unit of the ringing circuit, a line loop sensor 3, a scan block 4, a voltage divider 5, a threshold block 6, wires 7 and 8 of the line loop, bus 9 and

10 station batteries and 11 signal bus.

The device receiving the response signal

Sd subscriber works as follows.

00

Starting from the resistance of the subscriber line loop before the subscriber answers and when the handset is picked up,

and determine the voltage of the vyzgany signal at the input of the threshold unit 6 with offset of allowable deflected voltage on the call signal bus and choose the threshold voltage received at the output of the divider 5 in iRed-divs more than the voltage of the output signal at the input of the threshold unit 6 to the answer of the subscriber at the maximum voltage on the ringing bus, - {minimum

Claims (1)

Claim A subscriber response signal receiving device comprising a subscriber switch that is connected by an output to the lines of the line loop, the first input to the line loop status sensor, the second input to the call block circuit switching unit, while the power inputs of the line loop state sensor and circuit switching unit call calls are connected respectively to the buses of the station battery and the bus of the ringing signal, which means that, in order to increase the reliability of receiving the response signal, series-connected voltage divider a threshold block, as well as a scanning block, and the second input of the threshold block is connected to the output of the switching block of the sending circuit of the threshold block. 6, This improves the reliability of signal reception, subscriber response. The signal from the output of block 6, in which the response status of the subscriber was recorded, causes the call circuit to open in block 2 and the call block 4 e is turned on, the output of the threshold block is connected to the first input of the scan unit and to the control input of the switching unit Call circuit, status sensor output the line loop is connected to the second input of the scanning unit, the input of the voltage divider is connected