RU2012152C1 - Device for automatic dialing - Google Patents

Abstract

FIELD: telephone equipment. SUBSTANCE: device has automatic dialing unit 1, automatic dialing repeat unit 5, lines 2-4 and 6-9, inputs and outputs 10-13. Automatic dialing unit 1 has signal converter 14, "disconnection" signal generator, "repeat" signal generator, first and second OR gates 17 and 18. "Disconnection" signal generator has delay line 19, univibrator 20, AND gate 21, counter 22. "Repeat" signal generator has flip-flop 23, delay line 24, AND gate 25, univibrator 26. EFFECT: decreased time for dialing. 1 dwg

Description

 The invention relates to telecommunications and can be used in telephone networks with automatic telephone exchanges.

 The purpose of the invention is to reduce the time taken to retransmit the number.

 The drawing shows a structural electrical diagram of an automatic dialing device.

The automatic dialing device contains an automatic dialing unit 1, the first 2 ¹ and second 2 ² transmission lines of the telephone, the first 3 ¹ and second 3 ² receiving lines of the telephone, transmitting 4 ¹ and receiving 4 ² PBX lines, block 5 automatic repeat numbers , line 6 receiving the signal "End", line 7 for transmitting the signal "End", line 8 for receiving the signal "Repeat", line 9 for transmitting the signal "Repeat", subscriber input 10 and output 11, line 12 input and line 13 output. The first and second outputs, the first and second inputs of the automatic dialing unit 1 are connected respectively to the inputs of the first 2 ¹ transmission line of the telephone and the transmitting 4 ² PBX line, the inputs of the second 3 ² receiving line of the telephone and receiving 4 ¹ PBX line. The subscriber input 10 and output 11, the linear input 12 and output 13 of the device are connected respectively to the input of the first 3 ¹ receiving line and the output of the second 2 ² transmission line of the telephone, the input of the receiving 4 ¹ line and the output of the transmitting 4 ² PBX line. The first input and output, the second input and output of the automatic number repeating unit 5 are connected respectively to the output of the first 2 ¹ transmission and the input of the second 2 ² transmission line of the telephone, the output of the first 3 ¹ reception and the input of the second 3 ² reception line of the telephone. The third input and output, the fourth input and output of the automatic number repeating unit 5 are connected respectively to the output of the “Hang up” signal reception line 6, the output of the “Repeat” signal reception line 8 and the input of the “Repeat” signal transmission line 9. The third input and output, the fourth input and output of the automatic dialing unit 1 are connected respectively to the output of the transmission line 7 and the input of the reception signal line 6, the output of the transmission line 9 and the input of the reception signal line 8 “Repeat”.

 Block 5 automatic repeat the number contains the Converter 14 signals, the driver 15 of the signal "End", the driver 16 of the signal "Repeat", the first 17 (end) and the second 18 (repeat) elements OR. The first input and output, the second input and output, the third input and output, the fourth input and output of block 5 are connected respectively to the first inputs of the signal converter 14, the second input and output of the signal converter 14, the first input and output of the first OR element 17, the first input and the output of the second element OR 18. The third output of the Converter 14 signals is connected to the first inputs of the drivers 15 and 16 of the signals "End" and "Repeat". The output of the driver “Signal” signal 15 is connected to the second inputs of the first 17 element OR and the driver 16 of the signals “Repeat”, the first output of which is connected to the second input of the driver 15 of the signal “End” and the second input of the second element OR 18.

 Shaper signal "End" contains a delay line 19, connected in series to the first input, one-shot 20, element And 21, the counter 22 and the output. The first input of the shaper 15 is connected via a delay line 19 to the second input of the And 21 element, the second input of the shaper 15 is connected to the second input (reset input) of the counter 22.

 The “Repeat” signal driver 16 contains a trigger 23, a second input connected in series, a delay line 24, an I 25 element, and a single vibrator 26, the output of which is connected to the output of the driver 16 and to the reset input of the trigger 23, the installation input and output of which are connected respectively to the first input shaper 16 and the second input of the element And 25.

 The automatic dialing device operates as follows.

When dialing to the side of the telephone exchange from block 1 of automatic dialing through line input 12 and output 13, lines 4 ¹ and 4 ² transmit pulses corresponding to the dialed number. Block 1 automatic dialing also provides a conversational (control) mode of operation of the device in the inter-series time to listen to the PBX signals that come from the PBX to the telephone through line input 12 and output 13, lines 4 ¹ and 4 ² , blocks 1 and 5 of automatic dialing and repeating numbers transmitting 2 ¹ , 2 ² and receiving 3 ¹ , 3 ² lines, subscriber input 10 and output 11. The signal from the telephone exchange is received in parallel in the signal converter 14 of the signal block 5 of the automatic repeat number, which issues from its output to the inputs of both formers 15 and 16 rectified DC signals with a duration of equal duration t ₃ one sending signal "Busy" from the PBX.

In this case, the one-shot 20 of the shaper 15 of the “End call” signal is configured for a duration t _{in the} output pulse equal to the duration of sending the signal “Control call”; the delay line 19 delays the signal for a time exceeding δ (δ - >> 0) the duration t _{in the} signal from the output of the one-shot 20; counter 22 is configured to count to n, where n is selected based on the requirement of reliable reception of the Busy signal and the fact that the PBX signal Ready transfers the counter by one clock cycle, for example, n = 3 or a number equal to the number of Busy packets placed in the package "Call Control", after which the signal is held at its output for 1 s.

Given these conditions, when the first signal “Busy” is received from the telephone exchange, this signal, changing in the converter 14 into a DC pulse of duration t ₃ , starts the one-shot 20 and prepares the And element 21 for opening. When the second message “Busy” is received from the telephone exchange, at the output of a single vibrator 20 doubles and amounts to 2t, and upon receipt of the third package - three times, etc. Therefore, after a period of time t + δ, direct current pulses of duration t begin to appear on the second output of the And 21 element, which go to the counting input of the counter 22. The counter 22, counting up to n, issues the “End” signal through the first element OR 17 to the “End” signal transmission line 7 and then to the automatic dialing unit 1, which converts it and issues via line 4 ¹ and 4 ² , linear input 12 and output 13 in the exchange. The PBX receives the signal and destroys the connection. The PBX spends a time of the order of 1 s from the moment of the beginning of reception of the “Hang up” signal.

 In parallel with the receipt of the first pulse in the shaper 15, this pulse is supplied to the first input of the shaper 16 of the signal "Repeat" and sets the trigger 23 to a single state. Trigger 23 prepares the And 25 element for opening, which opens when the “Hang up” signal arrives at its first input, and the signal is delayed in the delay line 24 for a time sufficient for reliable reception of the “Hang up” signal in the telephone exchange (a little more than 1 s). The signal from the output of the And 25 element is triggered by the one-shot 26, the duration of the output pulse of which is selected based on the reliability of resetting to the zero state of the trigger 23 and the counter 22 in the driver 15 of the “End” signal and the operation of the second element OR 18, to the corresponding inputs of which this pulse comes from the output single-vibrator 26. From the output of the second element OR 18, the generated “Repeat” signal is sent via line 9 to the automatic dialing unit 1, which again starts transmitting the number recorded in the device to the telephone exchange using this signal. The process is repeated until a call-back control signal is received from the telephone exchange, to which the automatic number retry unit 5 does not respond, since in the signal conditioner 15 “Hang up” in this case there are no coincidence of single signals at the inputs of the And 21 element due to the fact that at the output of the single-shot 20, the signal will disappear earlier by a time δ than the pulse arrives at the second input of the And 21 element.

If necessary, the user can interrupt the dialing by pressing the “End” button on the keypad, while from the automatic dialing unit 1, the “End” signal is transmitted through the first element OR 17 of the automatic number retry unit 5 and then goes to block 1 via line 7 and converted to it and through lines 4 ¹ , 4 ² is transmitted to the exchange. If necessary, the device user can use the “Repeat” button on the keypad, and the “Repeat” signal reception line 8 and the second 18 OR element are activated.

Claims (3)

 1. DEVICE FOR AUTOMATIC DIALING, comprising an automatic dialing unit, two transmission lines and two receiving lines of the telephone, transmission and reception lines of the telephone exchange, subscriber input and output, linear input and output, the first and second outputs, the first and second inputs of the unit automatic dialing are connected respectively to the inputs of the first transmission line of the telephone and the PBX transmission line, the outputs of the second reception line of the telephone and the PBX reception line, subscriber input and output, linear input and output One device is connected respectively to the input of the first receiving line of the telephone and the output of the second transmission line of the telephone, the input of the receiving line of the telephone exchange and the output of the transmitting line of the telephone exchange, characterized in that, in order to reduce the time taken to retransmit the number, an automatic number retry unit is introduced , the transmission line and the reception line of the signal "hang up", the transmission line and the reception line of the signal "repeat", while the first input and first output, the second input and second output of the block automatically repeat the connection number respectively, with the output of the first transmitting line of the telephone and the input of the second transmitting line of the telephone, the output of the first receiving line of the telephone and the input of the second receiving line of the telephone, the third input and third output, the fourth input and fourth output of the automatic repeat unit are connected respectively to the output “receive” signal reception line and “hang up” signal transmission line input, “repeat” signal output line output and “repeat” signal transmission line input, third input and output, four The first input and output of the automatic dialing unit are connected respectively to the output of the “hang up” signal transmission line and the input of the “hang up” signal reception line, the output of the “repeat” signal transmission line and the input of the “repeat” signal reception line, the automatic repeat number block contains a signal converter, “hang up” signal conditioner, “repeat” signal conditioner, OR “hang up” element and OR “repeat” element, first input and output, second input and output, third input and output, fourth input and output of the automatic repeat unit are connected respectively Naturally, with the first input and output of the signal converter, the second input and output of the signal converter, the first input and output of the OR “hang up” element, the first input and output of the OR element of “repeat”, the third output of the signal converter is connected to the first inputs of the “hang up” signal conditioners and “repeat”, the output of the “hang up” signal conditioner is connected to the second inputs of the “hang up” element and the “repeat” signal conditioner, the output of which is connected to the second input of the “hang up” signal conditioner and the second input of the OR repeat element.  2. The device according to claim 1, characterized in that the “hang up” signal conditioner comprises a delay line, a first input, a single vibrator, an And element, a counter and an output connected in series, the first input of the former is connected through a delay line to a second input of an And element, and a second the shaper input is connected to the second counter input.  3. The device according to claim 1, characterized in that the “repetition” signal conditioner comprises a trigger connected in series with a second input, a delay line, an I element, a one-shot oscillator, the output of which is connected to the driver output and a trigger reset input, the installation input and output of which are connected respectively, with the first input of the shaper and the second input of the element I.