CH162304A - Telephone system with several exchanges and self-loading devices at the telephone stations. - Google Patents

Description

  

  Telephone system with several exchanges and self-loading devices at the telephone stations. If in telephone systems with several exchanges and self-loading devices at the telephone stations, the operation is not completely automatic. Instead, when establishing connections that the cooperation of female officers is required, precautions must be taken in order to eliminate the adverse effects of manual operation as far as possible, so that the traffic zone desired by the calling office is recognizable at the position of an officer do.



  For this purpose, display devices (e.g. a lamp field) are provided at the officer's place, which are influenced in a certain way by the code numbers sent by the calling station and thus the officer is shown the desired traffic zone, for example the exchange of the subscriber to be called .



  In order to facilitate the connection monitoring for the officer as far as possible, switching devices are provided according to the invention, which cause display devices at the office of an officer to only identify the traffic zone desired by the calling point if one of the value of the desired connection corresponding self-exposure has taken place on the part of the calling station.



  If it is a telephone system whose conversion to fully self-employed operation is planned, but not yet fully carried out, and in which the facilities required for the upcoming voter operation are already available in the switching centers with manual operation, so are, if possible to avoid the provision of special facilities that are only required temporarily and that will be lost as the renovation continues,

   Expediently, during the interim traffic, the display devices at the officer's place are brought into effect after all switching points have been switched to dialer mode to establish connections.



  The drawings show a diagram of the exemplary embodiment of a telephone system according to the invention.



  In FIG. 1, the parts of a coin-operated telephone NF are shown at the top right, insofar as they are important for the explanation of the subject of the invention. To the outgoing from: the coin operated telephone a, b of the coin operated telephone individually assigned office part AT is connected.

   The connections are established via a preselector V TV shown on the right in the drawing and further number current surge receivers (not shown).

   Furthermore, on the left in FIG. 1, a switching device GZE with a selector device with six switching arms is shown, which is referred to in the description as money and time adjuster or, for short, money dispenser.

   Via three wires a1 going out from this switching device, <I> m, r </I> an apparatus ZPR (Fug. 2) designated in the description as zone tester is switched on, to which in turn (see left part of FIG. 2) a device - referred to in the description as counting set ZS is connected.



  From the coin operated telephone station itself, the collection magnet EN, the return magnet RN, a contact 2q10 actuated by thrown in 10-pfennig pieces, a contact actuated by thrown 50-pfennig pieces 1g50, a display galvanoscope SG and the one that is connected to earth in the idle state Hook switch HU.

       The two wires a, b outgoing from the coin operated telephone are connected to two money pulse relays G50 and G10 in their circuit extension in the office. In the rest position of the coin operated telephone there is a closed circuit that is bifurcated from the two money pulse relays to the indicator light vanoskop.

   At one end of the fork is via relays on, contacts San, 4bes and 5ab, the grounded office battery, while at the other end of the fork is connected to earth via the closed hook switch.

   So there is a current flow from earth, battery, contacts 5ab, 4bes, closed contact San, -Wick ment of the relay <i> On, </I> Branch point y, winding I and via contact 6n, winding II of relay G50, contacts 15e, 12t, b-wire, contact 1y50, cashier magnet EibI,

      Winding part I of the .Schauzeichengalvanoskopes SG, and parallel to it <B> from </B> Branch point y via winding I of the relay G10, contacts 8r, 10t, a-wire, contact 2g10, return ga @ bemag-net Rill, winding part II of the display galvanoscope SG, branch point x, hook switch HU, earth.



  The contacts 6n respectively. 7n are under the influence of a relay N, which, if several tariffs are provided; For example, a day and a night tariff, which indicates the applicable tariff, which is effected by switching processes that are described below. = The relay N is controlled by a clock UH in such a way that, for example, it is

  between 7 p.m. and 8 a.m. Each: the "two money impulse relays G50 and G10 has two windings I and II. Both the windings I of both relays and their windings 1I have the same resistance.

   One of the windings II: of these two relays is now switched alternately in the morning 8 o'clock and in the evening 1.9 o'clock in parallel to the winding I of the relevant relay;

   so that, for example, during: the time of day as a result of the parallel connection of the two windings of the relay G50 at contact 6n. the a-wire - from one: current greater: strength flows through than the b-wire. During the night, so when the relay N is energized and the contact 7n is closed, the reverse ratio of the partial currents in .den two wires is set.

   The consequence of the different strong: current flow in the two veins is that the indicator galvanoscope is influenced so that it is one of. It deflects the pointer moved by a certain amount from a central position that the pointer would assume if the partial currents in both cores were pale. From the direction of deflection is therefore opposite to that during the daytime during the night. In this way, a guest is shown the tariff in effect at the time of the call, night or day tariff.



  In the current flow described above, when the system is idle, the return magnet and the cashier magnet, even if they are loaded by the larger idle current, as stated above, do not receive enough current that: they can be operated. The operation of these two magnets is done by Stromver amplification either on wire a or b. The current gain occurs when the low-resistance relay P is switched on in one of the two wires instead of relay G10 or G50.

   As will be explained later, this can be done by closing the contact 9r, which increases the current flow through the a-wire and thus excites the return magnet RM, or by closing the contact 14e, whereby the current flow through the b -Ader amplified and the excitation of the collection magnet EM is caused.

   Only the relays speak in the mentioned circuit while the system is idle and the IUF coin-operated television receiver <i> On, </I> G10 and G50 and keep their contacts in working position.



  There is the possibility of making local connections as well as long-distance connections through the pay phone shown. Since the device is also intended to establish relatively high-quality connections (connections can be established according to the example for which the speaking guest has to pay RM. 1.20 according to the daily tariff), the arrangement is such that the The amount paid can be paid in 10-pfennig pieces, in 50-pfennig pieces or simultaneously with both types of coins.

      The coins, which can also be inserted in any order, are checked for authenticity and suitability by a control device before they are picked up by the payphone, a measure that is irrelevant for explaining the present invention - and therefore not will be further described.



  Depending on the type, the coins are guided on different tracks so that contact is made after inserting a 50-pfennig piece <B> 1950, </B> when a 10-pfennig piece is inserted, the contact 2g10 is temporarily opened.



  It should also be noted that the two contacts 1g50 and 2g10 are not under the influence of relays G10 and G50, but are purely mechanical contacts that are only used when inserting coins, which is when the hook switch contact is closed, that is, before the listener leaves Hook is lifted, has to be done, operated ..



  Let us now first describe the establishment of a local connection, for which a fee of 10 pfennigs is to be paid both during the day and at night. Without lifting the receiver from the hook switch, the participant throws the 10-pfennig piece into the coin slot. As already mentioned, the coin is checked by a coin validator. After this process, it passes through the receiving channel and briefly opens contact 2g10.

   This temporarily interrupts the flow of current in the a-branch, causing relay G10 to drop for a short time. In the money and time adjuster GZE, the contact 16g10 is therefore closed, so that the rotary magnet D10 receives a current surge in the following way:

   Battery, earth, rotary magnet D10, contacts 16g10, 17g50 (the relay G50 remains energized because the b-wire was not interrupted by throwing in the 10-pfennig piece), contacts 20p, 22an, (the relay is -On, there .the hook switch <I> HU </I> has not yet been activated, still energized), earth. The rotary magnet D, 10 of the money and time adjuster GZE advances the switching arms 1-6 shown on the left in FIG. 1 by one step.

   Since this is a local connection, no further payment of coins is made, the magnet D10 is not influenced any further, so that its switching arms remain on contact 1.



  If the subscriber now lifts the receiver and thereby switches the earth off the hook switch Hm, the current flow over the fork is interrupted and, among other things, the relay <i> An </I> to waste - brought.

   As a result, the contact 21an is closed and thereby applied to contact 1 of the contact bank earth swept by the switch arm 2: earth, contacts Kan, 2,3f, '25n, 28d2, 30d1, switch arm 2 of the money and time adjuster GZE, contact 1 .

    The contacts of the contact banks swept by the switch arms 1-6 are connected to "zone rails" 1 = 6 acting as identification lines and wired according to the fee distribution and the zone.

   For example, rail 1 applies to local connections for which 10 pfennigs are to be paid, rail 2 for connections to the first remote zone, for which a daily fee of 30 pfennigs and a night fee of 20 pfennigs are charged, etc.



  The time and money setter is also set to the corresponding tariff, day or night tariff. In the case of a connection according to the daily tariff (as it is assumed for this example) the contact 25n is closed, while the contact 26n is closed during the time during which the night tariff applies. Also, these contacts are under the influence of the clock controlled: relay N.



  By: the relay dropping out <i> An </I> the contact 31an is still closed and thereby the circuit for the torque magnet Dvw of the preselector. VW agreed: Earth, contacts 31an, <I> 33t, </I> 35bes, 36o, rotating magnet Dvw, battery, earth.

   The torque magnet Dvw 'works together with the relay 0 as an interrupter in such a way that when the magnet Dvav is excited for the first time, the contact -37dv is closed, creating a circuit for the relay 0: earth, contact 37dv, winding of the relay 0 ; Battery, earth.

   At contact 36o, the circuit just described for the magnet Dmv is opened, so that the circuit for relay 0 at contact 37dv is opened again. The rotary magnet Dvw is again excited via the contact 36o which closes again, etc.

   This game continues until the switching arms a, b, c of the preselector VIP are on a next free connection device, for example a free I. group selector <I> I </I> have put GW in.

   The moment when this occurs, the relay T is energized in the pre-selector VW in the following way: Earth from the next free connection device, wire c, switching arm c of the pre-selector <I> VW, </I> Contacts 38bes, 39an, windings II and I of relay T, battery, earth.

    Relay T closes its contact 41t, thereby short-circuiting its high-resistance winding II and thereby blocking the connection device found against other occupancy. The relay Z, which is parallel to the winding I of the relay T, cannot yet respond in this circuit. As a result of the response of the relay T, the contacts 10t and 12t are still opened and, as the exchange part AT assigned to the payphone, is switched off by the latter.

   By closing the contacts 11t and 13t, the payphone is connected to the free connection device found: By opening the contact asst, the circuit for the rotary magnet of the preselector is opened and this is shut down. By closing contact 32t, the following circuit is closed for the second winding of relay M: Earth, - contacts 31an, 3'2t, <I> 42r, </I> winding II of relay M, battery, earth.

   The relay M responds and closes its contacts 45m, 46m, 48m. When these contacts are activated, wires a1, <I> m </I> and <I> r, </I> via which a zone tester ZPR can be reached is switched on.

        The apparatus of the zone tester has the following parts: 1. A connection finder VS, a switching mechanism moved by the rotary magnet Dvs with switching arms 1-8, which has the task of locating the time and money setter GZE influenced by the payphone.



  2. A co-running mechanism MW I, a rotary selector moved by the magnet Dmwl with the switching arms I-IV, of which the two arms II and III are offset by 120 to the arms I and IV.



   <I> 3. </I> A follow-up drive <I> MW </I> II, a selector with two directions of movement and three switching arms I-III, which are lifted by the lifting magnet IImw2 and rotated by the rotating magnet Dmw2.



  By closing the contact 46m, the following circuit is closed for the relay Ml in the zone tester ZPR (Fig. 2): Earth, battery, winding I of the relay Bes (which does not respond in this circuit), contacts 49r, 46m, wire 7n , Contact 50r1, winding of the relay Ml, switching arm IV -the follow-up mechanism MW <I> I in </I> Rest position, contacts 51o1, 52h, earth.

   Relay Ml closes its contacts 53m1, 54m1 and 55m1. At contact 55m1 the following circuit is closed for the first winding of relay G: earth, contacts 5: 5m1, 56dvs, winding I of relay G, battery, earth. At the contact 53m1, the windings I and II of the relay P'1 are connected to the switching arm 8 of the connection finder VS.

   At the contact 54m.1 a circuit is prepared for the magnet of the connection finder VS, which comes into effect when the relay G is activated and takes the following course: earth, contacts 58p1, 57g, 54m1, winding of the magnet Dvs, battery, earth . In the circuit mentioned above he speaks, the magnet Dvs and switches its switching arms 1-8 forward by one step.

   The magnet Dvs simultaneously opens the circuit of the relay G at contact 5,6dvs, which in turn opens the circuit for the magnet at contact 5'7y. At the contact @ 56dvs the circuit of the relay G is again established and thus the rotary magnet Dvs is re-energized. This play between the rotary magnet Dvs and the relay G lasts until the switching arms 1-8 of the connection finder VS are on the wires a1, <I> m </I> and r connected time and money adjusters GZE.

   Have the switching arms reached the relevant contact, the following circuit is effective via the switching arm 8: Earth, windings II and I of the relay P1, contacts 53m1, 59h, switching arm 8 of the connection finder VS, wire <I> r, </I> Contacts 48m (Fig. 1), 62bes, 61p, winding I of the relay M, winding I of the relay R, battery, earth. In this circuit, the relays M and R in the money adjuster GZE and the relay P'1 in the zone tester ZPR are energized.

   At the contact <I> 42r </I> (Fig. 1), the second winding of the relay M is switched off. However, the contacts of this relay remain actuated because the relay is kept energized via its first winding.

   By closing contact 43r, the second winding of relay R is switched on and the following holding circuit is closed for this relay: Ex-de, contacts 31an., 32t, 43r, winding II of relay R, winding I of the relay R, battery, earth. In the zone tester ZPR, the relay P1 had been energized in the mentioned circuit, running over the switching arm 8 of the connection finder VS.

   This relay short-circuits its high-resistance winding I at contact 64p1 and thereby blocks the money and time setter GZE from being opened by other connection seekers. The circuit for the rotary magnet Dvs is opened at contact 58p1 and the connection searcher is thereby stopped. Closing contact 65p1 creates the following circuit for relay R1:

      Earth, contact 6'5p1, winding. of relay B1, battery, earth. At contact 66p1, the following circuit is closed for delay relay V1: earth, battery, winding of relay V1, contact 66p1, switching arm. IV of the follow-up mechanism <I> MW I </I> in rest position, contacts 51o1, 52h, earth.

   Furthermore, the relay P1 also opens the contact 67p1 and closes the contact 68p1. This will energize the relay _. prepared, which is excited a short time after contact 69v1 is closed in the following circuit:

      Earth, battery, winding of relay A, contacts, 69v1, 68p1, switching arm 7 of connection finder VS, wire a1, contact 45m (Fig. 1), wire b, contact 1g.50, winding of the cashier magnet E111, sighting galvanoscope SG, Winding of the return magnet PH, contact 2g ^ 10, wire a, resistance Wi, contact 70m, earth.

   This circuit extends over the coin operated telephone station. The relay A is in this way under the influence of a not shown Stromstossssendeeinriehtung of the calling, participant and is influenced by number impulses at the same time with the @ Strom.stossempfangs- relay of a surge receiver downstream of the Vorwäbler. The relay R1. In the zone tester ZPR, which, as stated above,

    when contact 65p1 closes, its contact 50r1 opens and there with the circuit for the relay Hl running over the wire m. This circuit is also separated by opening the contact 49r in the money adjuster GZE. The relay Ml in the zone tester ZPR therefore drops out and interrupts the current circuit for winding I of relay G at contact 55m1.

   When it is excited, the relay V1 opens the contact 71v1 and closes the contact 72v1, where the following circuit is closed for the relay V2: earth, battery, winding of relay V2, contacts <I> 72v1, 74a, </I> 175f1, 78r1, earth. The relay V2 opens its contact 80v2 and closes its contact 79v2 and thereby brings the rotating magnet Dmwl of the follow-up mechanism <I> MW I </I> under the influence of the impulse contact of relay A.



  The first series of impulses sent by the calling subscriber indicates whether the desired connection is a local or a remote connection. For the present example it is assumed that when making local calls, a digit between the numbers 2--8 must be selected as the first digit. The from switching arm I of the follow-up mechanism -MW <I> I loading The crossed-out contact bank is therefore designed in such a way that the contacts 2-8 are wired to one another and the relays 01 indicative of the local connections are routed.

   It is assumed that the first series of electrical surges sent by the calling subscriber consists of five current surges. Relay A in the zone tester ZPR is influenced in accordance with the interruptions by the impulse transmission device on the payphone. Each time relay A drops out, the magnet Dmwl of the follower mechanism M W <I> I </I> a circuit closed:

   Earth, battery, winding of the rotary magnet. Dmwl, contacts 79v2, 73a, 75f1, 78r1, earth. This circuit is closed and opened again five times during the transmission of the five number current pulses by the calling subscriber. The rotary magnet Dmwl therefore switches the switching arms I-IV -des Mitlaufwerkes 111W I by five steps forward.

   The follow-up drive <I> MW I </I> is designed so that the switching arms II and III at an angle of 120 'opposite. the switching arms I and IV are offset. The switching arms II and III are therefore used when setting the follow-up mechanism <I> MW I </I> a switching process not carried out due to five number current pulses.

   After the end of the 3tromstosszeile the relay V1, which, as soon as .the follow-up mechanism MW I with its switching arms after the first pulse that takes effect on the magnet Dmzvl has left the rest position, is held via the contacts 81a, 82v2 and 65p1 and, since it is designed as a delay relay, while the short power interruption at contact 81a keeps its contacts in working position, brought to waste.



  When contact 72v1 is opened, the circuit for: Relay V2 is interrupted, which however, thanks to its design as a delay relay, lasts for a short time. During the duration of this fall time, the following circuit is closed for the winding I of the relay 01: earth, battery, contacts 8.3v1, 85v2, 86f1, switching arm I of the follower mechanism <I> MW I, </I> Contact 5 of the contact bank I marked by him, winding I of the relay <B> 01, </B> Earth.

    The relay 01 closes the following holding circuit: earth, contacts 88r1, 87o1, winding II of the relay <B> 01, </B> Battery, earth. By closing contact 89o1, the following circuit is closed for the first winding of relay G:

   Earth, battery, winding I of relay G, contact 89o1, busbar 11, which is connected to Kon tact 89o) 1, switching arm 1 of the connection finder VCS ', zone rail 1, contact 1, to which the money and time setter GZE has been set, switch arm 2 of the money and time adjuster GZE, contacts 30d1, <I> 28d2, </I> 25n, 23f, 21an, earth.

    By closing contact 91o1, the following circuit is closed for relay H: Earth, battery, winding of relay H, contacts 90u, <B> 916.1, </B> 78r1, earth. As a result, relay G is placed in the holding circuit: earth, contacts 931a, 92g, winding I of relay G, battery, earth.



  The relay G checks in this way whether the inserted amount corresponds to the charge for the connection, which the subscriber wishes to establish. The response of the relay G is thus the indicator for a correct payment made for the desired connection. The contact 94g is opened and thereby the creation of an excitation circuit for the winding II of the relay that runs via the contact 6'0h <I> Des </I> in the money and time adjuster GZE, a process that will be explained in detail later, prevented.



  As soon as the relay G has checked the correctness of the payment made, the task of the zone tester ZPR is fulfilled, so that nothing stands in the way of its shutdown and provision for other connections. The triggering of the zone tester takes place in the following way: The above-mentioned excitation of the relay H opens the contact 59h and closes the contact 60h.

   As a result, the aforementioned .Stromkreis running over the switching arm 8 of the connection finder YS - in which the relays P1 in the zone checker ZPR and 117 and R in the money adjuster GZE were energized, opened. The relay R in the money set ler remains energized through its contact 43r. Relay P1 drops out in the zone tester ZPR. The circuit for relay R1 is interrupted at contact 65p1. This drops out and opens the holding circuit for relay 01 at contact 88r1.

   When it drops, the relay 01 at contact 91o1 disconnects the circuit of the relay 11 delayed in the drop, which drops out a short time later. The holding circuit for winding I of relay G is opened at contact 93h. If these devices have reached their rest position, relay A is energized again:

   Earth, battery, winding of the relay <I> A, </I> Contacts 95v2, 96v1, 94dinwl, switching arm IV of the follower mechanism MW I in working position, 'contacts 51a1, 52h, earth. By closing the contact 74a the home circuit for the magnet Dmwl is closed, namely in the following way: earth, battery, winding of the magnetiDmwl, contacts 80v2, 71v1, <I> 74a, </I> 75f1, 97k, <I> 77r1, </I> earth.

   At its contact 94dmzol, the magnet separates the above-mentioned: Circuit for relay A, which accordingly opens its contact 74a and opens the circuit for the rotary magnet: At contact 94dmwl, the circuit for relay A is closed again, so that the rotary magnet Dmazol a new impulse is held.

   This game between the rotary magnet Dmwl and relay <I> A </I> is repeated until the switching arm IV of the follower mechanism MW I has run out of its return segment and has reached the break contact. In this position, relay A can no longer respond. The zone checker ZIPP. has thus been returned to its rest position.



  The relay NI in the time and money setter GZE had dropped out. By opening the contacts 48m, 46m and 45in, the lines a1, <I> m </I> and <I> r </I> switched off.



  It is now assumed that the calling subscriber has established the connection to the desired subscriber by sending out further series of numbered bursts and thereby setting a non-illustrated connection device that is close to the preselector VW.

       If the desired participant reports, an incentive, the counting stimulus, is transmitted via the c-wire, in such a way that the relay Z (winding I), which is parallel to winding I of relay T, responds through Stromver amplification on the c-wire . The relay Z closes its contact 100z, whereby the following circuit is closed for the second winding of the relay E: Earth. Contacts 99r, 100z, 101f, second winding. of relay E, local call counter Z0, battery, earth.



  The counter ZO is designed so that it only responds when the winding II of the relay E is energized in series with it, but not, if also, which does not happen in this case, the winding I of this relay is switched on.

   The counter ZO is thus switched on every time a local connection is established, so that it records the total number of all local connections made by the payphone MF. The relay E places itself independently of the relay Z in a holding circuit running via the contacts 99r and 102e. - A holding circuit is also closed for relay Z:

   Earth, contacts 103m, 104z, 105e, 106t, relay Z (winding II), battery; Earth. The relay E opens its contacts 108e and 15e and closes its contact 14e. The addressing of the relay E is the indicator that the calling subscriber has received the connection to the desired subscriber and - the receipt of the - thrown in. Amount can be done, which happens when the call is ended when the calling subscriber hangs up the receiver.



  When the call is over and when the caller hangs up the handset, the hook switch is activated <I> HU </I> Earth is switched on, then by switching processes not shown here and of no further interest: the release of the connection is initiated and the relay T excited via the c-wire is brought to waste. By opening the contacts llt and 18t, the preselect VW from the lines leading to the coin-operated telephone MF <I> a </I> and b switched off.



  By closing the contact 12t, the following circuit is created: earth, battery, contact 5ab, winding of relay P, contacts <I> 14e, 12t, </I> Wire b, contact 1g50, winding of the EM collection magnet, winding part I of the indicator galvanoscope SG, branch point x, hook switch <I> HU, </I> earth.

   Since, as already mentioned, the relay P has a low resistance, the current flow via the b-wire to the coin-operated telephone NF is so strong that the cash-in magnet EDI pulls through.

   The amount thrown in (in the example explained, the 10-pfennig piece) is collected and the coins fall into the cash box. The collection process is secured by relay B, which, although its holding circle is on Contact 32t has been opened, thanks to its design as a delay relay, the circuit for relay E at contact 99r is maintained long enough to: safely complete the cashing process.



  In the circuit mentioned above, relay P has also been energized. It closes the contact 109p. At the moment when the relay R drops out, the battery is connected to the relay via contacts 5ab, 109p <i> An </I> and the first winding of the relay G10 is applied and a circuit is formed for these relays, which continues via the contacts 8r, 10t, wire a, contact 2g10, winding of the return magnet RDI, winding part II of the display galvanoscope SG;

          Branch point x, hook switch HU runs to earth. The relays <i> An </I> and G10 respond in this circuit and close their contacts.

    If the hold circuit of the relay E is interrupted at the contact 99r, the windings I and 1I of the relay G50 are placed parallel to the winding I of the relay G10 on contacts 15e with simultaneous disconnection of the winding of the relay P and so, because after the dropping of the Relay P and opening of contact 109p meanwhile the Kon- talzt San is closed, the original state in which a quiescent current through contacts 5ab, 4bes ,, <i> San, </I> the relays <I> On, G10, </I> G50 etc. flows, restored.

     If the connection just described is made during the time during which the relay N has been energized, i. H. so at the time of the night tariff from. 7 p.m. to 8 a.m., contact 25n is open and contact 26n is closed.

   The relay G in the zone tester ZPR, which checks the correct payment, is now switched to zone 1, contact 1, switching arm 5 of the money adjuster GZE, contacts 177d1, 176d2, 26.11, <I> 23f, </I> elan, earth excited. In this case, no Schaltvor gear occurs via the switching arm 2. Otherwise the processes correspond to those already described.



  Let us now describe the establishment of higher-quality connections, such long-distance connections, for which, depending on the zone in which the call is being made, a fee of 30, 40, 70, 90 and 1'20 pfennigs per day and 20, 30, 50, 60 and 80 pfennigs can be taken into account during the night. It is assumed that the subscriber wants to establish a connection to the 3rd remote zone, i.e. a connection for which a fee of 70 pfennigs is charged during the day and 50 pfennigs at night.

   This zone corresponds to the "zone rail" 4 in the cash dispenser. As mentioned at the beginning of the description, the arrangement is made so "that the fee can be paid in units of 10 pfennigs as well as in units of 50 pfennigs and 1'0 pfennigs at the same time. It is initially assumed that the Subscriber wants to set up a daily connection and puts seven individual 10-pfennig pieces in the money slot of the NF coin-operated telephone.

    As already described, when the individual 10-Pfenuig- pieces are thrown in, the contact 2g10 is briefly opened and, in doing so, the relay G10 is released every time.

   The magnet D10 receives current impulses: earth, contacts 2'2an, 20p, 17g50, 16g10 (this contact generates the pulses for the magnet D10 that correspond to the number of coins inserted), magnet D'10, battery, earth . In the present case, the magnet D10 receives seven current surges and sets its switching arms 1-6 to the 7th contact.

   If now the participant picks up the receiver after inserting the coins and thereby, as was described for local calls, brings the relay An to waste, contacts 21an, <I> 2'8f, </I> 25n, 28d2, 30d1, switching arm 2 of the money adjuster GZE, contact 7 of the contact bank it has painted, earth applied to the "zone rail" 4 characteristic of the 3: far zone.



  In the manner already described, the connection searcher VS belonging to the zone tester ZPR is started, which searches (via switching arm 8) for the money counter GZE that has come into effect.



  For the present example it is assumed that every remote connection must be initiated by sending the code number 0. The ten current impulses that are to be emitted provide the follow-up mechanism in the manner described, in addition to the connection devices downstream of the preselector VW <I> MW I im </I> Zone checker ZPR on. After the first series of current impulses, the switching arm I of this follow-up mechanism is thus on contact 10.

   Since no switching mechanisms are connected to this contact at the moment, there is no switching process via arm I and this contact. The switching arms II and III, which are offset by 120 relative to the switching arm I, are on contacts 0 after the first pulse series consisting of ten pulses.

   Since, in contrast to the previous example, relay -01 has not been energized, the zone tester ZPR cannot be triggered for the time being. The second series of current impulses, which may consist of seven current impulses, is accordingly also transferred to the magnet Dr) zzE "l of the moving mechanism MW I.

   Remember that the circuit for magnet Dmzzvl is as follows: earth, battery, magnet Dmzzvl, contacts 79v2, 73a, 75f1, 78r1, earth. The switching arms II and III of the follow-up mechanism <I> MW I </I> are thus brought to the 7th contact.

   While over switching arm II of this switching mechanism Il @ hW <I> I </I> and contact 7 of the switching arm II of the follower mechanism <I> MW </I> II is switched on,. Comes via switching arm III of the follow-up mechanism lUW <I> I </I> and contact 7 shortly after transmission - the 2nd series of current impulses and the closure of contact 110v1, the following circuit for the FI relay is established: Earth.

   Contacts 88r1, 110v1, switch arm III- of the follow-up mechanism <I> MW I, </I> contact 7; Winding of relay F1, battery, earth.

    Relay F1 closes a hold circuit on contact 63f1. By opening the contact 75f1, the surge circuit for the rotary magnet Dmwl is interrupted and by closing the contact 76f1 the hub magnet Hmw2 of the switching mechanism MW II is switched on. 'At the same time, opening the contact <B> 8,6f1 </B> the second winding of RAais G freed from its short circuit.

    Closing contact 113f1 creates the following circuit for relay V2: Earth; Contacts 78r1, 113f 1, winding of relay V2, battery, earth.



  When the next, i.e. the third series of current impulses is sent, the lifting magnet Hnzw2 of the switching mechanism IIIW II will follow the path generated by the numbered current impulses transmitted to relay A: earth, battery, lifting magnet Hmw2 of the switching mechanism <I> MW </I> II, contacts 113h, 114u, 115a, 7,6f1, 78r1, earth.

   The rear derailleur <I> MW </I> II works like a line selector and is set by a lifting and turning movement.

   After the end of the series of impulses and the drop in delay relay V1, whose circuit now remains open at contact 81a for a long time, the following circuit is established for relay U: - Earth, battery, winding of relay Ü, at the first stroke of the follow-up mechanism <I> MW </I> II active contact 1161c, contacts 118w, 119a, 120v1, 123h, earth.

   The relay U closes its contact 124u and prepares a hold circuit for itself at this contact. This comes into effect when. when the next, that is, the fourth series of current impulses is sent, and the contact 81a closes, the relay V1 is again excited.



  'At contact 125u a switch is made from the lifting magnet to the rotary magnet of the switching mechanism 111W II. Dia: the following fourth series of current impulses now influences the rotary magnet Dmw2 in the following way: earth, battery, rotary magnet Dmaw2, contacts 126h, 125u, 115a, 76f1, 78r1, earth.

   The switching arms I-III of the follow-up mechanism MTV II are therefore set to a specific contact in a specific decade. If, after the end of the 4th series of impulses, relay V1 drops out again and contact 83v1 is closed, the following circuit is closed for winding II of relay G:

   Earth, battery, contacts 83v1, 85v2 ;. from the short circuit freed winding II of the relay G, switching arm II of the follow-up mechanism <I> MW I, </I> Contact 7, switch arm II of the follower mechanism <I> MW </I> II, - Contact x, to which the switching arm II should be set by the third and fourth series of current impulses, busbar 44,

       Switching arm 4 of the connecting sücbers VS, "zone rail" 4, contact 7 (Fig. 1), switching arm 2 of the cash adjuster GZE, contacts 30d1, <I> 28d2, 25n, </I> 23f, 21an, earth. The relay G responds in this circuit, which indicates the correctness of the deposit as before.



  The initiation of the triggering of the zone tester ZPR takes place in turn by relay H. "The relay U, which is designed as a delay relay; drops out a short time after the opening of the contact 121v1 and thereby closes its contact 90.t. For the relay H now arises following circuit; earth, battery, winding of relay H, contact 90u, at the first turning step of the follow-up mechanism <I> MW </I> II closed contact 128w, earth.

    For the relay G, a holding circuit is again established via the winding I: earth, battery, winding I of relay G, contacts 92g, 93h, earth. The relay G opens its contact 94g and thus prevents a switching process via the switching arm 8 of the connection finder VS, namely the excitation of the relay Bes on the money adjuster, from taking place after the relay H has responded and its contact 60h closed. If during the establishment of a connection, this relay Bes is not made to respond, the connection can be made un hindered.

   The relay H initiates the triggering of the zone tester ZPR in exactly the same way as before and initiates the return of the followers 11W I and 111W II. It should be noted that when relay F1 responds, the contact 111 f l opens and the contact <B> 112f1 </B> was closed.

   As a result, when contact 67p1 closes, earth is applied to switching arm 7 of connection finder VS, which becomes effective in the following circuit: earth, contacts 112f1, 67p1, switching arm 7 of connection finder VS, wire a1, contact 44m (Fig. 1) of the relay 111, which has now dropped out, in the money setting device GZE, winding I of the relay F, battery, earth.

   In this .Stromkreis the relay F responds in the money adjuster and closes a hold circuit for you at contact 129f: earth, contacts 31an, 32t, 129f, windings II and I of relay F, battery, earth. The relay F opens its contact 101f, thereby switching off the second winding of the relay E and closes its contact 102f, thereby preparing a circuit for the thermal relay Thf.



  If now after establishing the connection and reporting the desired participant via the Saha.ltaxm c of the preselector <I> VW </I> the counting stimulus is given and the relay Z is excited by this, the following circuit is closed for the thermal relay Thf: Earth, contacts 99r, 100z, 102f, 131e, winding of the thermal relay Thf, battery, earth.

   The thermal relay Thf is designed in such a way that it only actuates its contact 132thf after approximately 15 seconds. Here-. . This ensures that the excitation of the relay E and the decision to collect the amount of money inserted is delayed by about 15 seconds. During this time after the called subscriber has reported, the subscribers can speak without the inserted coins being collected if the caller gives the closing signal by hanging up the receiver.

   If, for example, the calling subscriber finds out within this time, the so-called waiting period, that the subscriber who answers is not the one he wants, he quickly hangs up his receiver and thereby closes the contact on the hook switch <I> HU. </I> In a known way, the relay <I> T </I> of the preselector VW brought to waste, so that a current flow arises over the wire a leading to the payphone, the

   Since the low-resistance relay P is now switched on via contact 9r, it is so strong that the return magnet RM pulls through its armature and thereby transports the thrown amount of money into the return tray. This current flow is as follows:

   Earth, battery, contact 5ab, winding of relay P,: contacts 108e, 9r, 10t, wire a, contact 2g10, return magnet BM, winding part II of the indicator galvanoscope SG, branch point <I> x, </I> Hook switch HU, earth.



  If the calling subscriber is now correctly connected, after the waiting period has expired, i.e. after about 15 seconds, contact 132thf is closed, and the following circuit earth is created for relay E, contact 132tibaf, windings I and II of relay E, Local call counter ZO (which, since both windings of relay E are connected in series with it, are not energized in this current circuit), battery, earth.

   The relay F closes a holding circuit for itself at the contact 102e and, by closing the contact 14e, prepares the circuit for the cashier magnet EM that will come into effect after the end of the signal from the calling subscriber.



  The thermal relay Thf is switched off at contact 131e, while a circuit leading to the counting set (FIG. 2) is closed by closing contact 130e.



  The counting set designated in the drawing by ZS is a control device which is jointly assigned to a plurality of coin operated telephones and through which two counters ZF and KZ are incremented. KZ is a control counter that records the value of the Fernver connections, which are made by a11 the payphones to which the counting rate is commonly assigned.

   The ZF counter is the remote counter individually assigned to each payphone, which is incremented for each long-distance call by the number of 10 pfennig units that are to be paid for each call.



  Since a Ortsverbindunbszähler ZO (Fib. 1) is now also for each payphone, it is possible to determine the amount contained in the cash box of a payphone with the help of these facilities and so under-loop when replacing BEZW. to determine when emptying the cash cassette.



  The circuit indicated above is running: earth, contacts 99r, 100z, 102f, 130e, line ZKl leading to counting record ZS (Fig. 2), resistance TWil in counting record ZS, contacts 133ds, <I> 1341, </I> 135s, winding of the relay U1, parallel to this resistance As, but larger. is as the resistance of relay U1, battery, earth. In this circuit, the relay U1 responds.

   At the contact 136241 the following circuit is closed for the magnet Ds of the counting seeker: earth, contact 1362c1, winding of the rotary magnet Ds, battery, earth. The switching arms 1-8 of the count finder are thus brought to the first contact.

    At the same time, the circuit for relay U1 is interrupted at contact 133ds, so that contact 136u1 and thus the circuit described above for magnet Ds is opened.

   As a result, the contact 133ds is closed again, the relay U1 is again energized and the circuit for the magnet Ds is restored:

   -This interplay between the rotary magnet Ds and the relay TJl continues until the switch arms of the counter seeker have reached the contact indicated by the earth on the connection line ZK1. Via the line ZK1, switch arm 7 of the counter seeker the relay S is energized,

   which finally interrupts the circuit for the relay U1 at contact 135s and thus stops the counting seeker. By closing the contact 137s, another relay is energized during the period of validity of the night tariff <B> NI </B> switched on, which is excited by this switching process in the time from 1: 9 to 8 o'clock when the pointer controlled by a clockwork UHl is on the segment.

   If a connection is established during the night, contact 139n1 is opened and contact 140n1 is closed. It takes place there by switching off switching arm 2 of the tap .ADW, which takes effect during the daytime, and switching on switching arm 3.

   In the present case, however, the connection was established according to the daily tariff, i.e. contact 139n1 was closed. \ By closing contact 138s, the following circuit is closed for relay F12-: earth, contact 138s, winding of relay F'2, resistor Wi3, battery, earth. The relay F2 closes it.

    Contact 141f2 and thus a circuit for the indexing magnet <i> There </I> of the scraper AB-W. The switching arms 1-4 of the gripper are thus switched to the first contact. At the same time, the contact 144d2 controlled by the magnet 1) a is closed, whereby the relay F2 is short-circuited and a short time afterwards caused to drop out.

   The contact <B> 141f2 </B> in the exciter circuit de., Magnetes <i> There </I> is opened so that contact 144da is also opened again. The relay F2 responds again and closes its contact 141f2, thereby the switching magnet <i> There </I> causes send to move its switch arms to the next contact. The play between the rotary magnet <i> There </I> and the relay F2 continues until the switching arm 2 of the tap ABW comes to the contact on which the earthed "zone rail" is located via one of the arms of the counting set ZS.

   According to the assumed example (switching arm 2 of the cash adjuster GZE in connection with "zone rail" 4), if the switching arm 2 of the tap finds the contact to which the switching arm 3 of the counting set ZS is connected, to which in this case the earthed " Zone rail "4 is located, the following circuit is formed for relay P2:

   Earth, winding of relay P2, contact 1397a1, switching arm 2 of the tap ABW, switching arm 3 of the counting set ZS, zone rail 4, switching arm 2 of the money adjuster GZE and further, as previously described, to earth. Relay P2 closes contact 142p2 when it responds, which creates the following circuit for relay T1: earth, battery, winding of relay TI, contact 142p2, switching arm 1 of the tap ABW in the working position, earth.

   Relay T1 closes a hold circuit on contact 143t1 independently of relay P2. The contact 145t1 in the wire running over the switching arm 6 of the counting set ZS is closed, in which wire the two counters ZF (individually assigned to each payphone) and KZ (a plurality of payphones together) are. Each time, if now when the rotating magnet is excited <i> There </I> the contact 144da is closed and the relay F2 drops out after a short time, the circuit for the two counters is closed at the contact 146f2.

    The pick-up ABW, which is advanced until it has reached its rest position, advances the two counters by one unit with each step. The wiring of the contact banks coated by the switching arms 2 and 3 is carried out in such a way that after energizing the relay P2, the number of contacts still to be passed through to the rest position corresponds to the number of 10-pfennig units thrown in by the calling subscriber.

   When the pickup has reached its last contact, then via shadow arm 4 of the pickup and contact 147t1- earth is applied to the switching arm 8 of the counting set and thus to the wire ZK2.

   The meaning of this switching measure is described in detail below .. Before it should be mentioned that when the switching arm 1 of the Ab gripper expires from its contact segment and reaches the Ptuheststellung, the holding circuit for the relay TI is opened so that the Contacts 143t1, 145t1 and 147t1 are opened. The earth potential applied via wire ZK-1 is then switched off in any arbitrary manner, so that relay S also drops out. and brings his contacts to rest.

    The counting rate ZS has then reached its rest position and is ready for further use.



  As just mentioned, the earth potential applied to wire ZK2 for a short time via switching arm 4 of the tap ABW and switching arm 8 of the counting set ZS causes the relay D2 in the money adjuster GZE: Earth to be excited; Wire Z12, contact 148d2, winding I of the relay <I> D2, </I> battery, earth.

   The relay <I> D2 </I> is immediately on its contact 149d2, winding II of the relay D2, contacts 150m, 152f, respectively. 153p, earth in a holding circle. The relay D2 closes its contact 154d2 and thus the following circuit for the magnet D10 of the money setter: earth, contacts 154d2, 1'56o, 159d1, winding III of relay R, magnet D10, battery, earth.

   The magnet D10 closes its contact 157d10 when it is excited, whereby the following circuit is closed for the relay 0: earth, contacts 154d2, 157d10; Winding of relay 0, battery, earth. At contact 156o, the circuit that has just been established for magnet D10 is interrupted, relay 0 at contact 157d10 is switched off again and contact 156o and thus the circuit for magnet D10 are closed again. The game between the magnet D10 and the relay 0 continues until the switching arms of the money adjuster GZE have reached their rest position.

         If this has happened, the following circuit for relay Dl is established via switch arm 1: Earth, contacts 154d2, 157d10, switch arm 1 in rest position, contact <I> 172f, </I> winding I of the relay Dl, battery, earth. The relay Dl is immediately above its contact 167d1, winding II of the relay Dl, contacts 150m, <B> 152f </B> or 153p, earth, in a holding circle. The circuit of magnet D10 is opened by opening contact 159d1.

   By closing the contact 15 $ d1 -the switching magnet D10 is brought under the influence of a 10-second switch S'10, which sends a current impulse to the magnet D10 every time at 10-second intervals, whereby the contact arms 1-6 of the The money adjuster can be switched one step further.

   This circuit runs as follows: earth, 10-second switch, contacts 168t, 169e, 161p, 158d1, winding III of relay R, magnet D10, battery, earth.



  After @ he has participated in the determination of the correct fee payment, the money setter is used for another purpose after this control process has been completed, namely as a timer for time counting and for the forced disconnection of the connection after a certain time, for example after 3 Minutes, wetted.



  If, under the influence of the 10 second switch, the money adjuster GZE has switched its arms 1-6 to the 17th contact, sa is, i.e. after <B> 170 </B> seconds, the following circuit closed: earth, contacts 154d2, 157d10, switching arm 1 of the money adjuster GZE, contacts 17, 162p, winding II of the relay Ab, battery, earth.

   In this circuit, the relay 9.b responds and switches the busy buzzer RS on contact 172ab to the wires a and b leading to the coin-operated telephone and thus signals to the speaking subscribers that the speaking time is almost up. If the participants do not pay attention to this warning signal, if the switch arm 1 is on Aden 18.

         Contact has been made, i.e. after three minutes, for the relay Bes the following circuit is closed: Earth, contacts 154d2, <B> 157d10, </B> Switching arm 1 of the money adjuster GZE, last contact of the unmarked contact bank, contact 170d1, winding III of the relay Bes, battery, earth.

   The relay Bes closes for itself at the contact 63bes a holding circuit running through the contact 61p, winding I of the relay M, winding I of the relay B to the battery, which, when the relay P is energized during the checkout process, is opened at contact 61p.

   By opening the contact .38bes the c-wire in the preselector VW is interrupted, giving the signal to trigger the connection devices and causing the relay T to drop out. By opening the con tact 3.2t, the holding circuit for the two windings I and II of the relay F and the relay B is separated.



  The collection of coins and. the transfer of the facilities to the idle state takes place in exactly the same way as this was described for the establishment of local connections. It should be mentioned here that at the moment the relay P is closed and energized by offnaning the contact 153p, the holding circuits for the two relays D1 and D2 are interrupted and so these relays are used for waste:

    Let us now consider the case that the calling subscriber does not pay the fee due for the desired connection with a; but paid with two types of coin. Let it again be assumed that a connection is desired for which a fee of 70 pfennigs is charged, and that the person making the call wants to pay in a 50 pfennig cloth and two 10 pfennig pieces. Regardless of the type of coin, the coins should

   be conveyed in one and the same coin slot, the order in which the coins are inserted is arbitrary. It is therefore assumed that the participant first throws in a ten-pfennig piece, then the 50-pfennig piece and finally another 10-pfennig piece.



  When the first 10-pfennig piece is thrown in, the magnet D10 is influenced, as has already been described in detail for local connections, which thereby brings its switching arms 1-6 to the Kontal.t 1. If the 50-pfennig coin is now thrown in, it is passed on to another path such as the 10-pfennig coin, also after being checked by the coin tester for suitability and authenticity. The contact 1g50, which is briefly opened during the falling movement of the 50-pfennig piece, lies in this path.

   This also causes relay G50 to be dropped for a short time. The relay G50 closes the contact 18g50 when it drops out, whereby the following circuit is created for the relay Dl: earth, contacts 22a2a, 20p, 18g50, 166d1, winding I of the relay Dl, battery, earth. The relay D1. immediately closes a holding circuit for itself via its contact 167d1, which runs to earth via its winding II, contacts 1507n, 153p.

   By opening the contact 30d1, the switching arm 2 of the cash adjuster GZE, via which the zone checking process took place in the connection described above, is switched off and by closing the contact 29d1 the switching arm 3 of the cash adjuster, via which the zone checking process is now running, is switched on. If the participant throws in the second 10-pfennig piece, a circuit for the rotary magnet D10 that was mentioned earlier is closed by interrupting the circuit for the relay G10 and closing the contact 16g10.

   The switching arms 1-.6 of the cash adjuster are thus from .1. switched to the 2nd contact. The contact 2, to which the switching arm $ is set, is, as can be easily seen from the drawing, also to the. Zone rail 4 connected.

   The zone check is therefore carried out in exactly the same way as in the case when the speaking guest pays with seven 10-pfennig pieces, the only difference being that the earth potential required to excite relay G in the zone checker is now via switch arm 3 of the money einstellers GZE and the contacts <B> 294, </B> 28d2, <I> 25n, 23f, </I> 2'1a-n, is created. The processes in the zone tester and in the counting set ZS are exactly the same.



  The relay Dl, which in turn has to participate in the time counting, is brought into the rest position in the following way before the start of the time counting. After relay H has been energized in Zonprüfex ZPR, relay P'1 is released by opening contact 5911, which at contact 65p1 interrupts the circuit for relay B1.

   By opening the contact 88r1 the holding circuit of the relay F1 is interrupted, which by opening the contact 11.3f1 causes the relay V2 to drop out. By closing the contact 84v2, earth potential is applied to the switching arm II of the follower mechanism <I> MW I </I> and the switching arm II of the follower mechanism <I> MW </I> II created.

   This closes a circuit in the money adjuster GZE for the winding II of the relay 111, which runs as follows: earth, contacts 84v2, 86f 1, switching arm II of the follow-up mechanism MW I;

   Contact 7, switching arm II of the follow-up mechanism <I> MW </I> 1I, contact <I> x, </I> Sarrimel rail 44, switching arm 4 of the connection finder VS, zone rail 4, switching arm 3 of the money adjuster GZE, contacts 29d1, 28d2, 25n, 24f (the relay F was, as described above, energized by the zone tester), winding II of relay 1V1, battery, earth. The relay M opens its contact 150m and thereby opens the hold circuit of the relay Dl. This relay drops out and can now be used for the time counting process that now follows.



  Now consider the case that a long distance connection is desired for which an amount of RM: 1.20 is to be paid. The participant has the option of paying this amount in three ways: 1. By inserting twelve 10-pfennig pieces.



  As already described, every time a 10-penny piece is inserted, contact 2g10 is opened and relay G10 is released for a short time. The magnet D10 receives twelve current surges by closing and opening the contact 16g10 and sets its switching arms to the 12th contact. The zone rail 6 is connected to the 12th contact of the contact bank coated by the switching arm .2 of the GZD cash adjuster. The code number for such a connection naturally has a different composition than that for the long-distance connection described above.

    This will make the shared drives lylW <I> I </I> and 762W II set in a different way in the zone tester ZPR. The zone test and excitation of the relay G then takes place via the switching arm II of the follow-up mechanism MW I.

   and one arm of the follower <I> MW </I> II, for example in this case the arm III, which is then on a contact to which the busbar 66 and also the switching arm 6 of the connection finder and the Zo nenschiene 6 is connected. The zone testing process is otherwise carried out in the same way as before.



  2. By throwing in a 50-pfennig piece and seven 10-pfennig pieces.



  When a 50-pfennig piece is thrown in, the magnet D10 is not influenced, but the relay DI is triggered, as explained above, thereby switching on the switching arm 3 of the cash adjuster GZE and using it to carry out the zone check. By inserting the seven 10-pfennig coins, the D10 rotary solenoid receives seven current surges and switches its switching arms to the 7th contact.

   The contact 7 of the contact bank swept by the switching arm 3 is now - but also connected to the zone rail 6, so that the zone check is carried out in the same way as when twelve 10-pfennig coins are inserted, with the difference that the earth potential for the Relay G is applied via contact 29d1 and to the switching arm 3 of the cash adjuster.



  3. By inserting two 50-pfennig pieces and two 10-pfennig pieces.



  When the first 50-pfennig piece was thrown in, the relay Dl was activated, as explained above. If a second 50-pfennig piece is thrown in and the contact 18g50 is closed for the second time, the following circuit is created for the relay D2: earth, contacts 22an, 20p, 18, g50; 173d1, 164d2, winding I of the relay <I> D2, </I> battery, earth.

   The relay <I> D2 </I> immediately closes a hold circuit that runs to earth via contact 149d2, winding II- of relay D2, contacts 150m, 153p. When the relay D2 responds, the contact 28d2- is opened, thereby disconnecting the switching arm 3 of the cash adjuster and switching on the switching arm 4 of the cash adjuster by closing the contact 27d2. The zone check is therefore in this case learn via the switching arm 4 of the Geldeinstel.

   If the two 10-pfennig pieces that are still required are thrown in, the magnet D10 switches its switching arms to the 2nd contact. As is readily apparent from the drawing, the con tact 2 of the contact bank swept by the switching arm 4 is also connected to the zone rail 6.

   The zone test is again carried out in exactly the same way, with the difference that the earth potential required to respond to relay G in the zone tester ZPR is now via contacts 21a72, 23f, 25n, 27d2 on switching arm 4 of the money adjuster, contact 2 and zone rail 6 is applied.



  The relays D1 and D2, which were actuated when the 50-pfennig pieces were thrown in, are then in turn activated by the relay <B> IU, </B> as described above, brought to the trash and used to help count the time.



  As can now be easily seen, the zone check is carried out 1. when only 10-pfennig pieces are thrown in via switching arm 2, 2. when a 50-pfennig piece is thrown in alone or with 10-pfennig pieces at the same time via switching arm 3, 3. When inserting two 50-pfennig pieces alone or with other 10-pfennig pieces at the same time via switch arm 4.



  The switching arms 5 and 6 of the money setter GZE come into effect during the zone test during the night tariff, ie when the contact 25n is open and the contact 9.6n is closed.



  1. If only 10-pfennig pieces are thrown in, the zone test is carried out via arm 5 and the earth potential is applied via contacts 2lan, 2'3f, 26n, 176d2, 177d1, switching arm 5, etc.



  z. If a 50-pfennig piece is thrown in alone or at the same time with 10-pfennig pieces, the zone test is carried out via switching arm 6 and the earth potential to excite relay G in the zone tester ZPR via contacts 21an, 23f, 26n, 176d2, 178d1, switching arm 6, etc.



  Let us now consider the processes that occur when the subscriber sets up a connection but does not pay the fee prescribed for the connection.



  1. If a speaking guest tries to establish a connection without inserting coins, since the switching arms of the money adjuster GZE remain in their rest position, a circuit for winding III of the relay Bes is immediately closed when the receiver is lifted:

   Earth, contacts 2lan, 23f, 257a, <I> 28d2, </I> 30d1, switching arm 2 of the cash inserter GZE in the rest position, contact connected to relay Bes, winding IH of relay Bes, battery, earth.

   The relay Bes responds and transmits a busy number to the subscriber by closing the contact 175bes. At the same time, the contact 38bes is opened, thereby making any connections impossible. 2.

   When the speaking guest If you pay an amount that does not correspond to the fee for the connection to be established, in these cases there is a discrepancy between the two switchgear, zone tester ZPR. and money setter GZE in such a way that a certain zone rail is grounded via an arm of the money setter GZE according to the amount thrown in, but on the other hand the switching mechanisms MW set by the code numbers corresponding to the traffic direction <I> I </I> and MW II of the zone inspector take such a position,

    that the earthed zone rail cannot be reached via these switching mechanisms. The circuit for the correctness of the fee payment determining relay G can now not come into being in the above-mentioned circuit. As a result, the contact 94g in the zone tester ZPR remains in its rest position, while the contact 60h of the relay H, which was excited independently of the relay G, is closed.

   This creates a circuit for the relay. Bes: earth, battery, contacts 94g, 60h, switching arm 8 of the connection finder VS, wire r, contact 47m (Fig. 1) (the relay 11'1 in the money adjuster GZE was brought to waste by opening the contact 5911 in the zone tester ZPB) , Winding II of relay Bes, earth.

   The relay Bes, in turn, switches the busy signal to the voice lines, causes the connection devices set up to then to be triggered by opening the contact 38bes and prevents the connection from being completed. Through the relay <I> Res </I> a connection that is already being established is interrupted at the moment when it is determined that the money deposit at the payphone has not been made correctly or that codes and thus traffic directions have been selected that do not correspond to the amount thrown in the connection devices set up until then are released.



       If the subscriber hangs up his handset after receiving the busy signal, since the relay E determining the collection of the amount has not yet been energized (relay R is energized), a circuit is closed over the winding of the relay P in the office part AT , through which the return magnet RDI on the coin cashier NF is excited as follows:

   Earth, battery, contact äab, winding of relay P, contacts 1086, 9r, 10t, a-wire, contact 2g10, return magnet R1! 1, to .Earth via the contact closed by the hook switch HU. The return magnet pulls through and conveys the amount thrown into the return tray.



  To the speaker from harm; To preserve, care must also be taken to ensure that the deposited amount is returned if the participant has inserted too many coins. For example, if the subscriber throws in eight 10-pfennig pieces instead of seven 10-pfennig pieces, then the switch arm 2 of the GZE money adjuster, contact 8 - energizes the winding HI of the relay Bes, switches on the busy buzzer at contact 175bes,

   at contact 38bes the. The connection devices set up until then are triggered and when a hang up. of the calling subscriber, the deposited amount has been returned. As can be seen from the wiring indicated in the drawing of the contacts of the contact banks painted by the switching arms 1 = 6 of the money adjuster, the contacts to which the switching arms of the money adjuster are set when too many coins are inserted are with the winding III of the Relay Bes connected.

   So even in the event that the participant pays too much, the desired connection cannot be made.



  For example, if the participant accidentally throws three 50-pfennig pieces into the throw, the following happens: When the first 50-pfennig piece was thrown in, the relay Dl was activated, as described. After throwing in the second 50-penny piece, how. has also already been written, the relay D2 energized.

   Both relays are in a circuit. If the third 50-pfennig piece is thrown in and contact 18g50 is closed for the third time, the following circuit is closed for relay B6s: earth, contacts 22an, 20p, 18g.50, 173d1, 165d2, winding III of relay Bes, battery , Earth. If the subscriber picks up the receiver, he receives the busy signal and, after hanging up, the amount deposited back.

   Only in one case, namely when there is a shortage of change, should it be permitted to establish connections g, even as an exception, if the prescribed fee is thrown in over an increasing amount, namely according to the exemplary embodiment it should be possible to establish a connection for which a The amount of 40 pfennigs is to be paid by inserting a 50 pfennig piece and establishing a connection, which is calculated at 90 pfennigs, by inserting two 50 pfennig pieces.

   The solution to this task is immediately apparent from the drawing. If four individual 10-pfennig pieces are thrown in, the switching arm 2 is set to the contact 4 and thus to the zone rail 3, via which the zone test then takes place.

   If instead of the four individual 10-pfennig pieces a 50-pfennig piece is thrown in, the switching arm 3 is not affected by the contact 29d1 and the break contact of the contact bank swept by the switching arm 3 (as already described, the switching magnet D10 is not affected by the throwing in a 50-pfennig piece, the switching arms the money adjuster remain in their rest position), the zone rail 3 is also switched on, so that the zone check can also be carried out in a positive sense here,

   in the same way as via switch arm 2 when inserting four 10-penny pieces.



  The same applies if the amount of RM instead of 90 pfennigs for a connection. <B> 1.- </B> is deposited. If the subscriber pays with nine individual 10-pfennig pieces, the zone check is carried out using switch arm 2 of the cash adjuster, contact 9 of the contact bank and zone rail 5. If the payment is made using one 50-pfennig and four 10-pfennig pieces, contact 29d1 the switching arm 3 of the cash adjuster GZE is switched on, and: the switching arms of the cash adjuster are set to the 4th contact.

   The "zone rail" 5 is also on this contact. If the subscriber pays with two 50-pfennig pieces, the contact 27d2 is closed and the switching arm 4 is therefore switched on. In this case, the switching arms 1 - G are not switched by the switching magnet D'10. The break contact, on: which the switching arm 4 is, is also ver with the "zone rail" 5 connected.

   In all three cases, the zone test is carried out in the same way via the "zone rails: e" 5, the only difference being that the ground potential is applied once via the switching arm 2, then via the switching arm 3 and finally via the switching arm 4.



       Fig. 3 shows schematically a device that is advantageous in such. Telephone systems can be installed that are not yet fully automated, but only partially automated, in which connections are made in certain directions with the assistance of an officer.

   In order to establish connections via an official's station in such systems with the help of the coin telephone shown in Fig. 1: with the same handling of the same (i.e. first inserting the required coins, then dialing the code number), Facilities must be provided at the official's place to enable precise monitoring of the calls initiated from the payphone.

   For this reason, it is necessary: to transmit the code number series of current impulses that characterize the desired exchange and that act on the zone testing device ZPR (Fig. 2) to the control devices arranged at the officer's place, which so the desired exchange, the Make the officer recognizable. This is achieved in that the lamps of a row of lamp fields assigned to the desired exchange are lit.

   This is effected, which will be described in detail in a moment, via the group selector designated in the figure with NGTF (network group selector) and AGW (office group selector). These are already planned for the coming fully automatic matic operation and are used to establish connections after switching to voter mode. For the time being, however, they serve this special purpose, i.e. to operate the control devices.



  The arrangement in the device shown is such that the group selector NGW, of which two stroke decades 1 and 2 are shown in FIG. 3, occupies a certain lamp field according to the series of current pulses required for its setting. Each lamp field consists of two rows of lamps.

   The first row contains the 10 lamps, of which one lamp can be switched on using the group selector AGW; the second row contains the ler lamps, of which one lamp can be selected by a step frame influenced by a number current surge series.

   It is therefore possible to mark three series of current impulses sent by the calling subscriber as a three-digit number through the lamp fields. From the group selector AGW five stroke decades 1 to 5 are shown.



  If the speaking guest wants to establish a connection through the manual remote exchange, he has to dial the appropriate code numbers after inserting the prescribed amount. It is assumed that the digit 0 is selected first, which means that what has been described earlier, the indicator: is given for a zone connection.

   As described, this series of current impulses sets: the zone tester ZPR and at the same time ... a: 7 onenmarking selector, not shown here, individually assigned to the payphone.



  After . The group selector NGW is switched on when this selector is set and the speech lines are switched through. The winding I of the relay C is excited via the c wire in a circuit which runs to earth via the contact 207k. Via the two speech lines <I> a, </I> b responds to relay A2. At the same time, the relay A2 and the resistor Wil0 are used to supply the calling subscriber station.

   When you speak to the relay C, the following circuit is closed at contact 210c: Earth, battery, contact 210e, winding IL of the relay C, contact <I> 212a2, </I> Winding of relay V3, earth. In this circuit, the relay C is kept energized if, after the first lifting step, the contact 207k is opened and the winding I of this relay is switched off.

   The upstream connection devices are not triggered by opening contact 2071c, since then via contact <I> 203m </I> (depending on the release magnet, not shown) and resistance <i> Will </I> Earth potential is at the tripping wire c.



       If the calling subscriber sends out the next series of current impulses to set the group selector NGW, the relay V4 is freed of its short circuit when the relay A2 drops for the first time by opening the contact 212a2, so that it is via: earth, battery, contacts 210e, 211a2, windings of relays V4 and V3, earth responds.

   As a result of the excitation of the relay V4, the contact 2'05v4 is closed, so that contacts 209c and 210c via this contact and resistor Wi4. Battery is connected to the lower voice wire and this remains switched on during this time, since the relay V4 is not caused to drop due to the short interruptions when the number current bursts are sent out.

   By the transmitted current burst series, the lifting magnet, not shown, of the group selector NGW is influenced and after this .Schaltvorganges the group selector in the set decade to search. a free line. The setting procedures of the group selector NGW are irrelevant here. Therefore, the setting devices for this group selector, lifting magnet, rotary magnet, trigger magnet, etc. are not shown.

   It is assumed that the group selector NGW is on contact o of decade 2 after its setting. A circuit is closed via switch arm c: earth, winding II of relay P2, contact 247c (which had prepared the test circuit when the group selector was occupied), winding I of relay P, switch arm c, contact o of decade 2, contact 214k, winding of relay Cl, battery, earth. Relays P2 and Cl respond in this circuit. By closing contact 213p2, the found group selector is blocked against other occupancy.

   At the contacts <I> 202p2 </I> and S031'2 the speech wires are switched through. The relay Cl in the group selector ÄGW closes a hold circuit at its contact 215e1, independent of the contact 214k, which is after the first <b> hub </B> step of the group selector ÄGW is opened. The test circuit running via switching arm c of group selector ÄGW is prepared at contact 217c1.

   Also for the group selector ÄGW the setting processes are insignificant and therefore the setting devices of this selector are not shown in the figure, the next series of impulses sent by the calling subscriber is transmitted to the group selector ÄGW at contact 201a2 and this selector is set in a known manner.

   It is assumed that the switching arms of this group selector are on contacts o of decade 5 after it has been set. The following circuit is then established via the c-arm of the group selector:

   Earth, winding 1I of relay P3, contact 217c1, winding I of! Relay P3, switching arm c of the group selector ÄGW, decade 5, contact o, lamp 50, movements I and II of relay A-nl, switching arm ddsl of switching mechanism Dds in rest position, resistance Wi5, battery, earth.

    In this circuit, the relays P8 and Afzl respond while they are lit. the lamp 50 is not yet possible in this current flow. The high-resistance winding II of relay P3 is short-circuited at contact 21,6p3.



  By closing the contact 220an1, the circuit just mentioned is maintained regardless of the position of the switching arm ddsl. By closing contacts 221.an1 and 222an1, switching arms a and b of group selector AG <B> FV </B> the relays Al and B switched on.

    The next series of current impulses is in turn transmitted to contact 221a2, specifically now to relay A1, which often closes and opens its contacts to the current impulses -the current impulse series P correspondingly.

   At the same time, the relay P is energized with the first pulse, namely in the circuit: earth, battery, contacts 210e, 209e, resistance Wi4, contacts 205v4, 203p2, switching arm b of the group selector NGW, contact o of decade 2, Switching arm b of the group R dialer AG @ W, decade 5, contact o, contacts 222an1, 22611, winding of relay B; Earth.

   At contact 23; 5b, a circuit for relay X is closed in the following way: earth, contact 235b, winding of relay X, contact 248anl, resistor IYi8, battery, earth. The current impulses of this series of current impulses now act on the switchgear DS by opening and closing contact 244a1 different times.

    The following circuit is created for the rotary magnet Dds: earth, contacts 239y, 241b, 244a1, rotary magnet Dds, battery, earth. The rotary magnet Dds has three switching arms ddsl, dds2 and dds3, which are now brought to a specific contact.

    Let it be. assumed that the series of bursts emitted consisted of three bursts; and that three current impulses are effective on the rotary magnet mitbin. The switching arm dds2 is therefore set to the contact 3 of the contact bench it has swept.

    After the series of impulses, since the contact 205v4 in. - Group voter NGW. ge opens and thereby the battery is switched off, the relay B brought to waste. The relay X is designed as a delay relay, so that it keeps its contacts in the working position for a while after opening the con tact 235b. This creates the following circuit for relay Y: earth, contacts 236b, 237x, winding of relay Y, contact 248an1, resistance Wi8, battery, earth.

   The relay Y opens the contact <I> 239y </I> and prevents Dds from being further influenced by the magnet. By. Closing the contact 238y closes it for itself independently of the contact <I> 237x </I> a holding circuit that runs across contact 248an1 and resistor Wi8. - The relay. Y. Opens his contacts 225y and <I> 226y </I> and. Switches through the relays <B> 11 </B> and B.

   By closing the contact 219y, the winding I of the relay Anl is short-circuited in the test circuit described above. The current in this circle is thereby. amplified in such a way that the lamp 50 lights up. By closing the contact. <B> 2.23y </B> the lamp 3 is made to light up in the following circuits: earth; Switching arm dds2, contact 3 of the Kon taktbank painted by him, lamp 3, contacts <I> 223y, 224z1, </I> Resistance Wi6, battery, earth.



  In the lamp field the lamps 50 and 5 are now burning. Via contact 230y, the following circuit is simultaneously closed: Earth, contact 234x, which is closed for a short time when relay Y is triggered, contacts 231z1, 230y, winding of the relay <B> 81, </B> Contact 248anl, resistance Wi8, battery, earth. The relay S1 is energized and switches the free signal FZ on: earth, free character FZ, contact 228s1, winding I of the induction coil; J, latch spring, earth.

   The dial tone is transmitted inductively to winding II of the induction coil J, which is connected to the speech wires. - The calling subscriber thus receives a sign that he has reached the position of the remote official. If the relay X- drops out after a short time, the relay at contact 283x <B> 8 </B> to a 10-second switch <B> 810 ' </B> so that the dial tone. rings every 10 seconds in the handset of the calling party.



  As already described earlier, a connection can only be established if the amount thrown in by the calling party matches the amount that is prescribed for the conversation in the zone in question. The GZE money setter and the ZPR zone checker were used to carry out the functions required for this. If, accordingly, a connection is established up to the position of the remote official, the agreement of the payment with the traffic direction desired by the calling subscriber has already been checked by these devices.

   From the lighting up of the lamp in the lamp field, the officer recognizes which connection direction is desired by the calling subscriber and at the same time also which fee has been paid by the calling subscriber. She now asks and accepts the request of the calling subscriber. By inserting the interrogation plug is switched off on the pawl spring earth from the winding I of the relay J and thus the dial tone from the voice line.

   If the connection direction marked by the lamps in the lamp field corresponds to the one requested by the subscriber, the officer establishes the desired connection. However, if the calling subscriber requests a connection to a different traffic direction than the one marked by the lamp field, the officer may not establish this connection, but must inform the calling subscriber

      by hanging up the phone to initiate the return of the inserted coins and to make the connection with the prescribed money slot and the choice of the above-described code number again. If the traffic direction desired by the calling party corresponds to the direction indicated by the lamp field, the officer establishes the connection in a known manner.

   After reporting the called subscriber, that is, if the conversation is successful and the fee has to be collected for the conversation, the officer presses the ZT counting key. The following circuit conditions apply to relay ZI: earth, actuated pawl spring, counting key ZT, winding, relay Z1, contact 248an1, resistor Wi8, battery, earth.

   Relay Z1 responds and closes a hold circuit on contact 229z1 independently of the counting button ZT. The circuit of relay Z1 is maintained for the duration of the connection. The circuit for the relay is connected to contact 231z1 <B> 81 </B> interrupted, which finally switches off the dial tone at contact 228s1.

    By opening contact 218z1, winding I of the relay <I> Ani </I> is switched on again, with the result that the lamp 50 goes out. By opening the contact 224z1, the circuit in which the lamp 3 was lit is interrupted and this lamp is also made to go out.



  * It can therefore be seen that the lamps in the. Lamp field can be made to go out. This arrangement has the advantage that the officer cannot forget to press the ZT counting key. _ At contact 227z1, the battery is connected to the lower voice wire, thereby closing the following circuit:

   Earth, battery, resistor Wi8, contact 248an1, contact 227z1, upper half of winding II of induction coil J, contact 22,2anl, contact o, decade 5, switching arm b of the group selector AGW, contact o, decade 2, switching arm <I> b </I> of the group selector NGW, contacts 203p2, 2044, winding of relay Zr, earth. The relay Zr responds in this circuit.

   At contact 206zr, earth is connected to the resistor <i> Will </I> connected to the c wire. The resistance Will is relatively small, so that by amplifying the current on the c-wire, the Kas sierinreiz is given and the relay Z in the office part AT (Fig. 1) is brought to respond. The relay Z in the office part AT is concerned, as described in detail earlier. the . Collection of the inserted amount of money.



  When the conversation is over, the relay A2 in the group selector NGITr is brought to waste by giving the final signal. Since the contact 211a2 is closed by, the winding II of the relay C short-circuited and this relay brought to waste. The relay C opens its contact 247c and thus the circuit running over the switching arm c of the group selector NGW.

   The consequence of this is also a drop in the relay Cl in the group selector AGT'Y. By opening the contact 217c1 the circuit which runs through the lamp 50 and the relay Anl is opened.

   The relay An, 1 therefore drops out and opens its contact 220anl. By closing the contact 232ani, the tail lamp SL lights up in the following circuits: earth, battery, resistor Wi7, contact 232aia1, tail lamp SL, latch spring, earth. When this lamp lights up, the officer recognizes that the conversation has ended and the caller has given the final signal.

   If she pulls the plug out of the pawl, the tail lamp is switched off at the pawl contact earth and the tail lamp is thus erased. By closing contact 242a-n1, the following circuit is closed for relay A1 via its winding II: earth, contacts 239y, 240b, 242anl, switching arm dds3 in working position, winding II of relay A1, resistor Wi9, battery, earth.

   Relay A1 responds and closes the following circuit for rotary magnet Dds: earth, contacts 239y, 240b, 242a0, 2-43a1, rotary magnet Dds, battery, earth. The rotary magnet: advances its switch arms one step.

   The contact 246dds controlled by the magnet Dds is closed when the rotary magnet is excited and thus a short circuit is created for the winding II of the relay Al, which causes this relay to drop out and consequently interrupts the circuit established for the rotary magnet Dds by opening the contact 243a1 . The magnet Dds is therefore de-energized and again opens its contact 246ds. As a result, the short circuit for the relay Al is in turn canceled and this relay is made to respond again.

   The rotary magnet Dds in turn receives a current surge and switches its switching arms on. This game between the rotary magnet Dds and the relay A1 continues .sich until the switching arm dds, 3 run abge from the return segment and has reached its normally closed contact. In the rest position, the relay Al can no longer respond. In this way, the switching arms of the rotary magnet Dds are brought into their rest position.



  The processes for triggering the group selector NGTTT and AGW are not described here, since they are irrelevant for the subject matter of the invention.



  It has already been mentioned that, when a connection has been established to the officer, the zone tester ZPR (Fig. 2) checks the amount of money thrown in by the speaking guest for agreement with the code number series of current impulses given by the calling speaker ) and the money adjuster GZE (Fig. 1) has already been completed.

   If this match is not found, i.e. if the participant throws in one of the traffic directions that do not correspond: the amount, the relay Bes in the money adjuster GZE (Fig. 1) is energized, as has been described in detail above by opening the contact 38bes the connection under construction is interrupted and the connection devices set up until then are released.

   Consequently, the lamps at the officer's place are not lit up if the calling station has made a self-burden that does not correspond to the value of the desired connection.



  It can now happen that in systems with several exchanges, the number of codes to be sent out differs depending on the type of exchange desired. For example, it is not necessary to send out as many codes for connections to a main exchange as for connections to a sub-exchange.



  If the desired subscriber is, for example, directly at a central exchange, the group selector NGW is set to decade 1. The following circuit is then created via its c-arm:

   Earth, winding II of relay P2, contacts 247e, winding I of relay P2, switching arm c, decade 1, corresponding contact, lamp n, windings I and II of relay A 1, switching arm dsl of step-by-step switch Dds in rest position, resistance Wi5 , Battery, earth.

   The lamp n does not yet light up in this circuit, but only when, as previously described, the relay Y (at contact 237x) is activated, contact 219y is closed and the current flow in the circuit just described is short-circuited Winding I of the relay Anl is reinforced. In this case, only one lamp, lamp n, lights up, while the switching mechanism Dds remains in the rest position due to the failure of further series of current impulses.

 

Claims (1)

PATENT CLAIM: Telephone systems with several exchanges and self-loading devices at the intercom stations, in which switching devices are provided, which ensure that display devices at the officer's place only indicate the traffic zone requested by the calling station if one of the values of the desired connection corresponding self-exposure has been made by the calling station SUBCLAIMS 1. Telephone system according to claim, in which during the transitional traffic from manual to voter operation, the display devices are brought into effect at the place of a civil servant via group selectors, which group selectors are provided in order to establish connections after switching all exchanges to voter operation. 2. Telephone system according to claim, in which the identification of the desired switching center takes place depending on the type of the same by switching on a different number of display devices. 3. Telephone system according to dependent claim 1, with multi-digit codes for the individual exchanges, in which the display devices for a part of the code digits except for the groups mentioned in dependent claim 1 .by further auxiliary switching means (Dds) are brought into effect. 4. Telephone system according to dependent claim 1, with different-digit codes, in which display devices (n) for low-digit codes bypassing a multi-digit code coming into effect group dialer (ÄGW) are switched on immediately. 5. Telephone system according to claim, in which the display devices are switched off by switching means (Z1), the effect of which forms the indicator that the calling station is charged according to the fee payable for the connection established. 6. Telephone system according to dependent claim 2, in which main exchanges by a small number of display devices are identified as sub-exchanges.