SU7549A1 - Device for counting connections at telephone stations - Google Patents

Description

The present invention relates to a device for counting connections on telephone stations, during which the counter is under the influence of a time counter during the entire connection. Since with automatic time recording, the caller will be forced to pay, in addition to the expenses for the actual negotiations, also special expenses for the connection time, the costs for the unsatisfied connection, etc., to calculate only the main time spent on calls The proposed adaptation in the connecting line, when calling the required subscriber, slows down the start of the time counter in order to first prepare the counter for basic expenses.

FIG. 1 of the drawing is a diagram of a telephone exchange for serviced by a manual system; in fig. 2-diagram automatic telephone station.

When the subscriber Tl is calling (Fig. 1), the calling relay AI circuit is closed through the subscriber line and through the Ictj contact, the calling lamp AL closes. The telephone operator then inserts the test plug AS into the test socket AK, whereby the following current circuit is established: ground, battery, slider lamp SL, pin 2si, plug contact 3, socket body 4, relay T, ground. The relay T operates and, breaking the contacts 5 and 6t, turns off the ringing relay of the subscriber A and the ground. The caller now receives the current to power the microphone through a power supply relay 8 connected in parallel to the cord line, which operates simultaneously with

relay T and, opening contact 2si, breaks the shunt of the resistance 7. Due to the inclusion of this resistance 7 and the resulting weakening of the current flowing through the bouncing lamp SL and the relay T, the bouncing lamp SL cannot light up.

The telephonist polls in the usual way, tries whether the required line is free or busy, and, if free, inserts the connecting plug VS into the connecting socket of the VK. As a result, the following current circuit closes: ground, battery, relay B, pins 8 and 9g, plug contact 10, cortex of socket P, relay T, ground. Relay T shuts down the ringing relay A of the required subscriber, opens contacts 12 and Relay B closes its contacts 14, 15 and 236. Through contact 23 & bounce lamp circuit; SZ 2 of the desired subscriber: ground, contacts 23 & 24%, break off lamp SL, battery, ground. Due to the closure of contacts 14 and 156, the required subscriber will be automatically called. Using the rotary switch 16 to the relay R receives the battery, then the source of the ring current RU. Calling current has the following path: ground, source of ringing current-J7, switch 16, relay R, contacts 15 & 17si, 18m, 19g, 20, subscriber unit, contacts 21, 22, 14 b, winding II relay S, contact 36 and land In this circuit, the relays do not operate. During the intervals between calls, a switch is supplied to switch 16 via switch 16. If the required subscriber answers in the interval between calls, then only the direct current circuit of relay B through the subscriber’s unit is closed, and this relay, opening contact 9g, breaks the relay shunt V. Relay U operates, opens its contacts, 8, 18 and 36tt and closes its pins 25, 26 and 26i. Through contact 26g, the caller's counter receives a current pulse in the following way: ground, contacts 26m, 277g., 28, 29,

counter Z, battery, zeml. After closing the contact 25i and opening the shunt at the winding III at the contact 36m, the supply relay Sc, the required subscriber, acts through its windings I, P and III. At the contact, the bouncing lamp circuit 8L is cut off, and the auxiliary relay S is turned on via contact 30s2. This auxiliary relay is blocked through contact 32A through contact 31A. Further, due to the opening of the contact 27A and the closing of the contact 33fe, the caller’s call counter comes under the action of the time counter ZS. A time counter closes the circuit of the counter Z: ground, time counter ZS, contacts 34s2, 355, 33 / i, 28, 29, counter Z, ground.

At the end of the conversation, the counter circuit immediately breaks through the supply relay of the first subscriber who has hung up the phone, because, due to the loss of relay 8 or, contact 34s2 or contact 35si breaks.

If both subscribers hung up the phone, the SL and SL bumper lamps are switched on. The latter light up and the telephone operator disconnects the subscribers, removing the plug AS and VS from the AK and VK jacks. As a consequence, the U and B relays in the cord line are left without current. Relay U interrupts at contact 32 “the blocking circuit of the relay S. The connecting line is now again at rest.

FIG. 2 a practical scheme for an automatic station has been carried out. When the subscriber calls, the RI pre-search VW relay closes through both its windings and the line. Close his contacts and 2g1. The contact b-j closes the rotating magnet circuit -Dj as follows: ground, contact, rotating magnet D, contact 2t-, interrupter 3, battery, ground. If the pre-searcher finds a free first IGW group finder, the following current path is formed: ground, contact 2rj, windings I and II of relay Tj, brush 3, contact 4, winding 1 of relay (7 ,, head contact 204k, battery, ground. Current branches to the battery and the ground parallel to the winding 1 of the GI relay through the contact and the resistance 6. The relay T and Ci act. The relay TI interrupts at the contact 2t the circuit of the rotating electromagnet D, closes through the contact closure 7 / i (to which the head contact 3 / s given the ground) found first, group finder by means of a short the closing of the winding 1 of the TI relay and through contacts 9 and 10 t switches the spoken wires to the AI relay connected in parallel, simultaneously turning off the RI ringing relay by opening the contacts And.

In the first group finder, the relay Ci prepares with its contact 13 Cj a lock for its winding II, which operates when the relay is energized by opening the contact -14 a. The blocking circuit for relay C, in which the delayed FI relay is also located, is obtained as follows: ground, contact 13 CD winding P relay C, contact 15 Oj relay Fj. battery Relay V-through circuit 16v prepares the circuit for the lifter electromagnet. If the caller sends current pulses to establish the first group finder, then with each break in the line and the resulting parallel parallel relay 1 falling, the lifting electromagnet HI turns on: ground, 17 Cj contacts, 16 g, 18 "j, lifting electromagnet ETi, contact I9iv, opened at the first turn of the finder, battery, earth. At the first fallout of the relay A-i, due to the opening of the contact 15 "i, the relay Fo is activated, which operates and, by opening the contact, prevents the rotating electromagnet from being turned on. Relay 2 remains under excitation during the acquisition of a pulse and cannot disappear between the pulses, since it works as a delayed relay due to the short-circuiting of its winding through pin 15 aj. When all the current pulses have run out, then the contact 15 "1 remains closed for a longer time. Relay Fo drops off and closes the circuit of the rotating electromagnet ground, contact 120 f / o (self-opening contact of the rotating electromagnet), 21 Oi, 20 V., 22 p, rotating electromagnet D, head contact 23 k, battery, ground. If the group finder finds a free linear finder, then the following test circuit is obtained: ground, windings 1 and II relay Pb contact 24 C, brush 25, contact 26, contact control switch 27-position 1, relay 6, battery, ground. Relays P) and C are valid. The PI relay interrupts the rotating electromagnet DO circuit through pin 22 and then, by shunting its high impedance winding 1 through pin 28 j, it will not be possible to occupy the line finder found by the other first group finder and turn on the talker wires through pins 29 and 30pi. On the linear finder, the Cg relay will work and will be blocked via contact 31 C2; the blocking circuit does not work when the control switch leaves its position 1 and thereby opens contact 27. If you -. if the subscriber sends current pulses to install a linear finder, then when i first drops out, relay i will turn on relay Fg again, which will open its contact 32f.2 and close contact 33g; 2 As a result, the linear searcher will act in the continuation of the pulses: ground, battery, contacts ЗЗг / з, 30 PI, brush 34, contact 35, contact of control switch 36-position 1 (also closed in position 2), relay B, ground. The current pulses will be transmitted to the linear finder at each falling off of the parallel AI relay i i relay of the linear finder along the following path: ground, contacts 37 ai, 38 s, 29 p, brush 39, contact 40, control switch 41 (position 1 ), also closed in position 2, relay A, battery, zeml. With each excitation of relay A, the elevating electromagnet U receives a pulse: ground, contact 42 a, contact of the control switch 43-position 1, elevating electromagnet battery, ground. At the end of a series of pulses, relay 2 disappears due to prolonged closure of contact 15 “1, so that relay BI disappears due to closure of contact 33 of the ultrasonic. The following circuit closes: ground, contacts 44 nd, 45 fc, (which was closed at the first raising of the linear finder), contact of control switch 46, position 1, relay F, resistance 47, battery, ground. Relay F, through its contact 48 f, turns on the electromagnet of the control switch St, which puts the control switch to position 2 and short-circuits relay F through contact 50st. In position 2, a rotary solenoid Dg is connected to the pulse contact 42 through the contact of the control switch 51 instead of the sub-electromagnet -02. The current pulses act in exactly the same way as with a sub-electromagnet. Once again, relay B is energized during a series of pulses, it disappears only after its termination and closes the circuit of relay F through the contact 52gu closing at the first rotational motion of the searcher: ground, contact 445-2.10, control switch 53 contact F2 , resistance 47, battery, zeml. Relay F switches the control solenoid b ,,. again on, which leads the control switch to position 3 and closes the relay I via contact 50 si. In position 3, the line test is “zan. If the line is free, the following circuit is obtained: ground, battery, control switch contact 54-position 3, winding relay I and II relay, brush 55, contact 56, T-line relay, head contact 57 of the corresponding searcher, ground. Relays T and P are valid. Relay Ta disconnects from the line the ringing relay of the pre-searcher in the same way as in the line of the caller, while the relay RZ closes its high-resistance winding 1 through contact 58 Pz and thereby closes the selected line.

In position 3 of the control switch to the relay F, the switch 60 is switched through the contact of the control switch 59, so that the control switch can only pass through the position 3 in passing and immediately goes to position 4.

Since the relay P acted and then the contact 61 p closed, this activates the relay F through the contact of the direction switch 62. The guide switches to the position where the first call goes to the selectable wire ..

The source of the ringing current, the contact of the control switch 63 is position 5, the brush is 64, the contact 65, the subscriber's wire and the bell of the device, the contact 66, the brush of the control switch 67, the contact 68 in position 5, ground. The guide switch in position 5 is depressed for a short time, because its 69 relay F is connected to the circuit breaker 70. The position L is prepared at position 6, which, with the aid of the -SP call breaker, closes after a certain period of time: ground contact 71, contact of switch 72 in position 6, relay L, call breaker B, and battery, ground. With each excitation, the relay L opens its contact 131 and closes

its own contact 74, whereby the calling current through the contact of the guide switch 75 is included in the subscriber wires.

During call pauses via contact 731, the U relay turns on. If the called subscriber responds during pause, the U relay will be energized by closing the DC circuit through the subscriber unit and opening contact 71m will break the L relay circuit, then close its contacts 7bi, 77w and 78m and, in addition, opens contact 79i. From contact circuit 76, the relay of the counter of the number of connections ZR on the first group finder will follow: ground, resistance 80, contact 76g1, 40, brush 39, contact 29 PI, 38 Cj, 81 “1, relay ZR (winding), battery, ground. The ZR relay attracts a bark and closes the contact for the Z counter by its contact 82cg. The current path is as follows: ground, battery, breaker 83, resistance 84, contact 85 о, 82gg, 4, brush 3, counter 2 parallel to it, winding relay 2, KOHfaKT , 8 and, land At the same time as the ZR relay is energized, the direction switch switches to position 7, since relay F is energized via contact 78 and contact of direction switch 86 (position 6). The relay is also equipped with a slow-acting cortex and therefore there is still a short time, when the brushes switch to position 7, excited, so that the following circuit can close: ground, battery, contact 77 ", contact of the direction switch 87 (position 7), contact 35, brush 34, contact 30 Pi, 32%, relay NOT (winding 1), contact, PZ o, zeml. Relay HB includes itself through its contact and its II winding into the next holding circuit, which also contains electromagnet O: ground, contact 89hr, winding AND relay NO, electromagnet O, contact 9Ur, 90 s-, battery, ground. -Relay ZR when excited

through its contact 91gg and winding 11 also depends on the 90 Cj contact in the holding circuit. An electromagnet O is associated with a retarder of any known type that changes several contacts after various periods of time have passed. The retarding device can be made in the form of a mechanical retarding device, or also in the form of a relay, which throws its one contact immediately, the other through a known period of time after the first.

In this case, the electromagnet O, being excited, immediately causes its PZo to open, during the opening of the contact 85 o and the closing of the contact 92 o only after a certain period of time has elapsed; the time after which the transfer of the last named contact should follow depends on the number of counter pulses through which the meter gives an indication of the main flow, on the other hand also the speed at which the current pulses from the circuit breaker 83. If the main flow corresponds to the meter Z is read three times, then the retarder or time counter O is designed so that it comes into effect when the breaker 83 sends three current pulses. When O will act, then the counter Z through contact 92 o, the resistance 93 and the interrupter 94 is energized after a certain period of time. Contacts 95 and 96 are closed on the linear finder in position 7 of the direction switch. So, relays A and B can operate through the subscriber loop. Relay J..2 opens its contact 97% and therefore makes it impossible to energize relay F after releasing the measles of relay U.

When a caller calls your microphone,

the relay AI is left without current and, from this, contact 14 a shorts the winding 11 of the GI relay, which releases the measles after some time, and contact Cj breaks the auxiliary circuit of the 2-S and -ff-B relays, also of the O electromagnet. Next in contact 24ci relay circuit P and Cg, relay PI, measles release, breaks the circuit of the switching electromagnet MI, earth, contacts 98ci, 99g / 1, lOOpi, electromagnet M, head contact UT / s, battery, earth. Almost simultaneously with the PI and C relays, the Vi relay releases measles, due to the opening of the ISq contact. The L / 1 electromagnet returns the group finder to a quiet position and, in a 5% contact, breaks the relay circuit 1 of the predictor FPFj, which releases the measles, closes the circuit of the rotating electromagnet DI by contact 2ej, which reaches the rest position by contact of the preselector.

On the linear finder, when the 24ci contact is opened, the measles of the Cg- relay releases. At the same time, its contacts 103 and 104c2 are closed, through which the activation process occurs only when the called subscriber hangs on the microphone. When the latter hangs up the microphone, then the relay f will be fired through contacts 97a2, 79gb and the contact of the guide switch 105 in position 7. The guide switch switches to position 8, in which the relay II relay R3 short-circuits and the switching-off electromagnet M closes it is switched on via the contact 106 of the direction switch in position 8 and the contact USS. The linear finder switches off with, due to the closure of the contacts 107/1; relay F includes the following: ground, contact, 104c2, contact 109 of the direction switch in position 8, relay F, resistance. 47, battery The guide switch moves to position 1, whereby from the closure of the contact 27 of the guide switch in position 1 the linear finder is made available to occupy it with a group finder.

If the called subscriber hangs up before the called one, then, by releasing the relay core 49, the direction switch immediately changes to position 8, in which it remains until the calling subscriber hangs the microphone to immediately interrupt the counter . When the microtelephone is hung up by the called subscriber, the following circuit is closed at position 8: ground, contact 110c2, contact 111 of position 8, contact 35, brush 34, contact 30pi,, winding 111 of relay D contact 112o, battery, ground. Since winding III is turned on oppositely to winding AND 2I, when turned on, it destroys the action AND winding. This is followed by the falling out of the core of the ZR relay and from this a break of the blocking circuit of the NI relay and the electromagnet O due to opening of the contact 91 n. The resulting inclusion of the counter circuit Z through the breakers 83 and 94 of the relay are therefore at rest, so that the counter is not excited .

The subject of the patent.

1 A device for counting connections on telephone exchanges, in which during a conversation the caller's call counter is controlled by a time counter, characterized by the use of two relays f and H, of which the relay and, including the source of the ringing current, are provided with a contact 2bg {assigned to activation of the call counter Z and a contact 36m assigned to activate the relay supplying the subscriber's loop, and relay H connected to the battery circuit via terminal 30 S, relay S

provided with contacts 21h and szl assigned to, when I opens the first of them and closes the second after actuation of the counter Z, the counter circuit; closed through the counter / S negotiation time.

2. With the device described in item 1, the application of a decelerating electromagnet O intended for switching the counter Z to the time counter circuit only after the counter Z is activated when the circuit is closed by the contact 92o of the electromagnet O, which contact 92o closes only after passing through the winding an electromagnet About a certain number, for example, three current pulses from the chopper 83, the circuit of which includes the counter Z (Fig. 2).

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