DE592547C - Circuit arrangement for counting connections of different values in telephone systems - Google Patents

Description

In the main patent there is an arrangement for counting compounds of different values in Telephone systems with dialer operation placed under protection, in which each subscriber line Several counting devices are assigned in the exchange, of which only one or more are put into action depending on the setting of the connection devices will.

The invention is a further development of this arrangement and aims to determine which of the counting devices to influence in each case made connections are, as far as possible avoiding special auxiliary equipment or lines and without changing the connection equipment. This is achieved by that a counter to be influenced for all connections, one or more only for connections switches on counting devices that are to be influenced in a certain traffic direction to a service artery of the connecting route.

The figures show exemplary embodiments of the invention. A subscriber Tn can reach a desired subscriber via a preselector VW, a group selector GW, only a part of which is shown in the figures, and via further connection devices that are not shown. In the exemplary embodiments, the connections can be local connections or also lead to a subscriber in another exchange that is reached via one or more connecting lines. Several counting devices are now assigned to the subscribers in such a way that the charges for the individual types of connections can be determined separately from the individual information provided by the counters.

The arrangement according to FIG. 1 will first be described. If the subscriber Tn lifts his receiver to establish a connection, the following circuit is established: earth, battery, resistor TfJ ₁ , contact 3 1, subscriber station Tn, contact 2 1, winding of relay R, earth. By closing the contact 10 r , the rotary magnet D of the preselector VW is excited via: earth, battery, contacts xor, gt, rotary magnet!), Relay interrupter RU, earth. If the preselector has reached a free connection line, for example to the group selector GW, the following circuit is established: Earth, battery,

*) The patent seeker stated as the inventor:

Frans Etsel in Berlin-Siemensstadt.

Contact ην, windings II and I of the relay T, c-arm of the preselector VW, resistance Wi _it winding of the relay C, head contact 14A of the group selector GW, earth and in the shunt via contact 15 m of the tripping magnet of the group selector GW and resistance Wi ₅ , Earth. Relays T and C respond in this circuit. By closing the contact 8 1 , the high-resistance winding II of the relay T is short-circuited, so that the group selector GW is blocked against any further assignment. The rotary magnet D of the preselector VW is stopped as a result of the opening of the contact Qt. The connection line of the subscriber Tn to the group selector GW is switched through at the contacts xt and At. If the subscriber now sends out a series of impulses to set the group selector GW , it is set to the desired decade in a known manner. At the same time, any switching device assigned to the group selector can be influenced by this series of current impulses, which determines the number of counting current impulses to be transmitted. Such a switching device can, however, also only be influenced by one of the subsequent series of current impulses or be activated in any other way. By sending out further series of current impulses, the number of which depends on the number of connection devices present, the subscriber Tn can reach the desired subscriber.

It is initially assumed that the subscriber Tn called a subscriber in the same exchange, that is to say has established a local connection. When making local connections, the group selector GW is influenced in such a way (setting of the group selector by a specific number current impulse series) that the direction or decade contact RKO is closed. It is also assumed that when local calls are made at the end of the call when the calling subscriber Tn is attached, a counting current surge is generated by a device (not shown) arranged in the group selector GW. This device therefore closes the contacts τχζ and 132 once at the end of the connection. By closing the contact 132, the resistor Wi _{4 is} short-circuited and this causes a current gain on the c wire, which _{causes the counter Z 1} to advance in the following way: earth, contact 132, switching arm c of the preselector VW, counter Z ₁ , parallel to this, winding I of relay T, contact 8t, switch arm d of preselector VW in working position, battery, earth. The counter Z ₁ is designed in such a way that it closes the contact 5% when it responds. A circuit is then also created for the counter Z ₂ , whereby it must be assumed that the contact closure by the counting device in the group selector continues until the contact 5% in the preselector is closed. The circuit for counter Z ₂ then runs through: Earth, counter Z ₂ , contact 5 ^ ₁ , switching arm δ of preselector VW, contact xxz in group selector GW, direction contact RKO, which was closed for local connections, resistor Wi ₂ , battery, Earth.

It can therefore be seen that the one counting current surge that comes into effect on local connections causes both counters, SOWOhIZ ₁ and Z ₂ , to be incremented.

However, if the subscriber Tn has established a remote connection for which, for example, a fee corresponding to three times the local fee is to be paid, the group selector GW experiences a setting such that the decade contact RKO is not closed. If, at the time the count is carried out, the counting device (not shown) in the group selector transmits, for example, three counting current surges, the contact closures at contact xxz have no effect on counter Z ₂ . Only the counter Z ₁ will be incremented by three steps by the contact closures on contact 132.

So it turns out that all. Fees, both local and remote fees, are recorded on the meter Z ₁ , while the meter Z ₂ only indicates the fees for local traffic. It is therefore very easy to _{calculate from the difference Z 1} minus Z ₂ the fees that are to be taken into account for pure long-distance traffic.

Fig. 2 shows a somewhat modified arrangement, which consists in that the subscriber three counters ZZ ₁ , ZZ ₂ and ΖΖ _{Ά are} assigned. The connection is established in exactly the same way as has been described for the arrangement according to FIG. If the subscriber Tn has established a local connection for which only a counting current surge is transmitted, the following circuit is closed for the counter ZZ ₁ by closing the contact 13 z: earth, contact 132 in the group selector GW, switching arm c of the preselector FTF, counter ZZ ₁ (parallel to this winding I of the relay T), contact 8t, switching arm d of the preselector VW in working position, battery, earth. In this case, too, the arrangement is such that a directional contact RKF indicates whether it is a local or remote connection. In this case, the direction contact RKF is only closed when the group selector GW is raised to a decade according to the first numbered current impulse series over which remote connections are to be established. Since, accordingly, with local connec-

If the contact RKF remains open, the counters ZZ ₂ and ZZ _{3 are} not affected.

However, if the subscriber has now established a remote connection for which, for example, three counting current surges are transmitted, then by closing the contact 13 ζ the counter ZZ _{1 is influenced} in the same way as has already been described. This counter ZZ _x is equipped with a delayed fall, so that it keeps its contact ζ ZZ ₁ in the working position during the repeated contact movement on contact 132. Through this contact 52 ^ ₁ , two counters ZZ ₂ and ZZ _{3 are connected} to the lower speech wire. Of these two counters, the counter ZZ ₃ also has a delayed fall. The contact ixz is closed three times in accordance with the three counting currents to be transmitted, so that the following circuit is established three times: earth, battery, resistor PFt ₂ , directional or decade contact RKF (closed for remote connections), contact 11 z, lower voice wire, switching arm δ of

_z5 preselector FTF, contact 5 ^ ₁ , counter ZZ ₂ , counter ZZ ₃ , earth. The counter ZZ ₂ is therefore incremented in three steps, while the counter ZZ ₃ equipped with a delayed fall is incremented only once for each remote connection.

It follows that the number of all connections, local and long-distance connections made by the subscriber station Tn ₁ , are recorded on the counter ZZ _1.

The counter ZZ ₃ indicates the number of remote connections established by the subscriber station Tn , while the counter ZZ ₂ records the charges for these established remote connections. Finally, the difference ZZ ₁ minus ZZ ₃ gives the number and charges for the local calls made from Tn.

Claims (3)

Patent claims: 1. Circuit arrangement for counting connections of different values in telephone systems according to Patent 496 886, characterized in that a counting device (Z ₁ , ZZ ₁ ) to be influenced in all connections has one or more counting devices (Z ₂ , ZZ ₂ , ZZ ₃ ) connects to a service wire of the connection path. 2. Circuit arrangement according to claim i, characterized in that the counting device or counting devices (Z ₂ , ZZ ₂ , ZZ ₃ ) are connected to a voice wire transmitting counting currents, while the counting device (Z ₁ , ZZ ₁ ) making the connection itself via the Blocking wire is influenced by counting current surges. 3. Circuit arrangement according to claim 1, characterized in that for the purpose of separate determination of the number of connections of different types (local and remote connections) as well as the fee for the same multiple counting devices (ZZ ₂ , - ZZ ₃ ) are connected to a voice wire, which is partly have fast (ZZ ₂ ), partly delayed falling armatures, so that they are actuated partly with each counting current surge, partly only once with each counting current surge series. 1 sheet of drawings