SU1288929A1 - Device for transmission of dialling signals - Google Patents

Abstract

This invention relates to automatic. electric communication The purpose of the invention is to reduce the unproductive time taken by the subscriber line by pre-storing the transmitted signals. The device contains a keyboard 1, n filters. conversational unit 3, calling unit 4, lever switch 5, n g-ss 6i-6p, n locking pins 7, -7 ", wire" and subscriber line 8, wire "in subscriber line 9. Again, the counter 10 pulses, clock g - p II, m keys 12i-12m, scan signal receiver 13, key 14, filter 15, rr 16, subscriber identifier 17. Each line is scanned mp, and once a second, and reliable transmission of information about the number series is provided in 30 ms Thus, the unproductive time spent on the line when using this device is reduced by 66 times. 1 il.

Description

The invention relates to the field of automatic telecommunications and is intended to transmit dialing signals.

The purpose of the invention is to reduce the unproductive time taken by the subscriber line by pre-storing the transmitted signals.

The drawing is an electrical block diagram of a dialing signaling device.

The device for transmitting dialing signals contains a keyboard 1, p filters, a talking unit 3, a calling block 4, a lever switch 5, n generators 6–6, p fixers 7 | –7, wire and subscriber line 8, wire in subscriber line 9, a pulse counter 10, a clock generator 11, m of keys 12i-12,, a receiver 13 for signaling, an additional key 14, an additional filter 15, an additional generator 16, a subscriber determinant 17.

The device signaling dialing works as follows.

If it is necessary to obtain the required communication, the subscriber does not pick up the handset, i.e., does not call the PBX, dials the number on keyboard 1. After dialing - programming the last b-series number from the additional output of keyboard 1 to the input of additional key 14 is sent an opening potential that connects an additional filter 15 to the subscriber line. The subscriber identifier 17 at the respective scan cycle is connected to the subscriber line. A single-tone signal from the output of the additional generator 6 through the subscriber identifier 7 is transmitted to the line, to the lever switch, 5, additional K.-1YuCH 14. In this case, the subscriber determinant 17 determines the number of the subscriber unit requiring service.

The fact that the scan signal passes through the additional filter 15 captures the receiver 13 of the scan signal, which generates a command to start the clock beater 11. The clock generator 11 translates the pulse counter 10 from the initial position to the first position. From the output of the pulse counter 10 to the input of the first key 12 | Opening potential arrives. At the same time, through the first key 12: and the keyboard 1 to the subscriber line are connected in accordance with the dialed first series number two from n filters 2i-2 .. In two of the n clamps, bursts of alternating currents from two of the frequencies will be fixed; f .. ,, which will allow to decrypt the first series of the called number. Then the clock generator 11 will transfer the pulse counter 10 to the second position. From the output of the pulse counter 10 to the input of the second key 12-2, the opening potential will arrive, Mil will provide connection to the subscriber

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lines of the other two of the n filters. In this case, two of the n fixers 7i-7 „will fix the second series of the number of the called subscriber. This process will be repeated and terminated by fixing the last b-series number. After that, the subscriber line will be switched to the called subscriber line.

The caller and the callee will be provided with a call signal, which will be received by the calling unit 4 almost instantly after dialing - by the calling subscriber, the called party number, if the latter turns out to be free. The caller picks up the handset earlier than the called one. Thereafter, an acoustic signal will be sent to the caller from the station. The control of the call will be received, which it will receive using the talker unit 3.

0If the called party is busy, then, for example, an inductor call signal will be transmitted from the station, which carries information about the called party's busyness. At the request of the caller on the appropriate cycle of the next cycle of scanning subscriber lines, the caller will be served again. If he does not wish to repeat the call, then it will be sufficient for him to exclude the information on the last b-series of the called number. In this case, the opening potential from the additional key 14 will be removed and the scanning signal will not be transmitted through the subscriber line.

If the number to be dialed will have fewer characters than w, then the caller will dial it for the corresponding number of the last series so that the last character matches the programming of the last w-series.

If we take into account that each line is scanned 3 times per second, and reliable transmission of information about the serial number is provided in 30 ms, then the unproductive time to occupy the line will be 66 times shorter.

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Claims (1)

Invention Formula A device for transmitting dialing signals containing a keyboard, n filters whose outputs are combined. And the inputs of each of the n filters are connected to the corresponding n terminals of the keyboard, as well as a talk unit, a call unit, a lever switch, the first output of which is connected to the input of a talk unit, the output 55 of which is connected to the output of the ring unit, the input of which is connected to the second output of the lever switch, as well as 0 five 0 generators, p clamps, the inputs of which are combined and connected to the wire and subscriber line, the outputs of each of the n tabs are connected to the corresponding inputs of each of n generators, the outputs of which are connected and connected to the wire in the subscriber line time of subscriber line idle time by pre-storing the transmitted signals, a pulse counter, a clock generator, t keys, a scan signal receiver, an additional key, an additional ny filter, an additional generator, the subscriber determiner having an input coupled to the inputs of n latches, and an output connected to the subscriber determiner additional input of the generator, whose output is connected to the n outputs of generators, and each of the m terminals is connected to the corresponding keypad by others;:;; i.iv,: i-KU .ii iЧЕЙ, BblXO. Ibl i, - Sec .: i-.i AND .CHCH DINNES with G1; n, imi: ibiioix) FILTER AND |;) p: mM P -.-,, H 1CHI;; P1K: GO I10 | ieCy Switch, inopi.K- and. :,. and / kdogo and w keys connected). ; -., -; o1vuyu1t t counter outputs img pulse-gn. lopo / smart output, which coc; unicii with the first input of the clock generator, the second input of which is connected to the output of the scan signal receiver, the input of which is connected to the second output of the additional filter, whose input is connected to the first output of the additional key, whose input is connected to the additional The output of the keyboard, the outputs of the n filters are connected to the second output of the auxiliary key and the output of the call box, and the third output of the lever switch is connected to the wire on the subscriber line.