DE451478C - Circuit arrangement for counting connections of different values in telephone systems - Google Patents

Description

in telephone systems.

The invention relates to a circuit arrangement for counting connections of different values in telephone systems and refers to sieves, in particular to arrangements which the incrementing of the counter of the calling station according to the value and the duration of a connection. The purpose of this counting method is to advance this counter to bring about only at the end of the ίο connection, which is according to the invention is achieved in that the counting current surges occurring in certain time segments stored by switching devices and only act on the calling subscriber's counter when the connection is canceled. The arrangement can can be made in such a way that the time units (e.g. 3 minutes) in all traffic zones are the same and at the beginning or at the end of a time unit a different number of Counting current surges are given. Furthermore, however, the 'counting current surges can also be in different for the individual traffic zones Time units (e.g. in Zone 1 every 3 minutes, in zone 2 every 2 minutes etc.).

In the drawing, an arrangement is shown as an embodiment of the invention, in which, depending on the value of a connection, the counting current impulses are given in different time segments.

All circuits, relays, magnets that are not required for the essence of the invention etc. have been omitted for the sake of clarity, since they per se are well known and any selector circuit can be used can.

When a call is received, the preselector VW of the calling subscriber line adjusts itself to a free group selector in a known manner. By the calling party from ¹ -gesandte current pulses thereto, the adjustment is made of the first group selector /. GW to a specific contact group and the selection of a free line connected to this contact group. When such a line is found, the following circuit is established: Earth, winding I and II of relay P, contact igv ¹ , switching arm 20, contact 21, winding I of differential relay X, head contact 22 k, winding I of relay C ¹ , battery, Earth. The relays. P and C ¹ cause the known switchovers. The relay X cannot be excited by the current flowing through its winding I, as will be explained below.

For setting the first group selector /. QW subordinate voters are passed through the impulse contact 27 α via the wire a ¹ current impulses, while at the same time due to the excitation of the relay V ² and the closure of the contact 28 v ² battery is connected to the wire b ¹ via the resistor 70 during each series of impulses. Suitable dimensioning of the series resistor 70 prevents the high-resistance relay ZR ¹ in the second group selector from being excited while the selector is being set. In the wire b ¹ a second winding II of the differential relay X is switched on, which is excited in the opposite direction as the winding I by the circuit closed during the selector setting via the wire b ^1. The relay X therefore remains de-energized during the selector setting and for the duration of the connection.

When the desired participant answers, this will be done on the second group: - dialer //. GVV in bridge to the Spredhadern a ² , b ² relay ZR ¹ 'energized. The two circuits via which the said relay is excited take the following course: earth, battery, resistor 30, contact 29 (closed when the desired participant is reported), contact 31, switching arm 32, contact 33 p ¹ , winding I of the relay ZR ¹ , earth and: 'earth, resistor 34, contact 35 (closed when the desired participant is reported), contact 36, switching arm 37, contact 38 p ¹ , winding II of relay ZR ¹ , battery, earth. The relay ZR ¹ responds and closes its contact 39. As a result! a circuit for the drive magnet D is a ¹ * ¹ ZS switching mechanism closes earth time uk contact 40, contact 39 zr ^1, solenoid D ^1, battery, earth. Of the

*) The patent seeker stated as the inventor:

Max Langer in Berlin-Hermsdorf.

Claims (3)

Contact 40 ilk is selected by the first group voter /. GVl ^ occupied connection line closed in certain time segments, for example every minute or every 2 minutes, etc. Each time the contact is closed, the magnet D ¹ receives a current surge and switches the arm 41 of the switching mechanism ZS ' one step further. It is assumed that the switching arm 41 is on contact 42 at the end of the conversation. If the calling subscriber is pending, the relays A, B and C are de-energized in a known manner, the latter opens the circuit via the winding I of the relay V ¹ at the contact vie , which, however, remains energized via the winding II connected to the contact 14 c. The relay ZR is switched on via contact 15c , so that the following circuit, prepared when the requested participant reports, comes into effect: Earth in the line selector LW, battery, resistor 30, contacts 29 and 31, switching arm 32, contact S3 P ^l > winding II of relay X, contacts 43 s and 44, switching arm 45, contacts 2 Sp, 481 / -, 15 c. Relay ZR, head contact 47 k, earth. The relays X and ZR respond. The relay X can respond because the current flowing through the winding II supports the effect of the current flowing through the winding I. The relay ZR short-circuits the resistor 6 at the contact 502 / · whereby the counter Z assigned to the subscriber receives sufficient current. Furthermore, the winding II of the relay V ^{1 is} temporarily short-circuited at the contact 51 zr without this being caused to drop out. The rotary magnet £> ² at contact 48 χ of the switching mechanism ZS switched on, whereby the sound arm 54 is advanced by one step. The following circuit is closed at contact 49 χ : earth, auxiliary relay S, contacts 49 x, 62, switching arm 63 ,. Contacts 24 p, 14 c, 51 zr, battery, earth. Relay 5 interrupts the circuit at contact 43 s via winding II of relay X and relay ZR. The latter immediately drops and opens the contact 51 zr the short-circuit to the winding of the relay II V ^1, so that this relay will remain energized now in series with the relay S. At the contacts 52 s and 53 s , the windings I and II of the relay X are short-circuited, which consequently drops out with a delay and the contacts 48 χ and 49JC opens. The relay 5 is thus de-energized, closes its contact 43 s and i opens its contacts 52 s and 53 s. Now the relay X is again energized and causes the switching processes already described. If the switching arm 54 of the switching mechanism ZS ″ comes to the contact 55, which is connected to the contact 42 of the switching mechanism ZS ^1, which is grounded via the switching arm 41, the relay 5 is short-circuited, since ground via 41, 4 ² J 55j 54 ^and 64 is turned on. the relay S can not respond as a result, and the current circuit via the winding II of the relay X and the relay ZR is longer periods of time. the winding II of the relay V ¹ remains permanently short-circuited, so that this relay drop and the triggering of the can bring about recruited voters in a known manner. By caused when initiating the voters opening of the contacts 33 p ¹ and 38 p ¹ relay ZR} opens and closes above its contact 59 zr ¹ the circuit for the drive magnet D ^1: Earth, battery, solenoid D ^1, contacts 59Zr ¹ , 60 c ^x , head contact 61 kzs ¹ , breaker 62, earth. When the switching mechanism ZS 'reaches its rest position, the contact 61 kzs ^{1 is} opened and the circuit mentioned is interrupted as a result. The circuit for the drive magnet D- of the switching mechanism ZS " is closed via the contact 56c ¹ as follows: earth, battery, magnet Z> ³ , contact 56 c ¹ , head contact 57 kzs", breaker 58, earth. This circuit is ^{also interrupted 1} when the switching mechanism reaches its rest position, since then the head contact 57 kzs ^{11 is} open. λ ϊ Ii N T Λ N S I 'RÜ CHE: ι. Circuit arrangement for counting different-valued connections in telephone systems, characterized by switching devices (ZS ¹ and ZS ") which store the counting current surges that come into effect in certain time segments and act on the calling subscriber's counter when the connection is canceled. 2. Circuit arrangement according to claim r, characterized in that the accumulation device (ZS ¹ ) is put into effect when the requested participant is reported (by means of the relay ZR ¹ ). < 3. Circuit arrangement according to claim i, characterized in that the switching devices (ZS ¹ and ZS ") are assigned to the connecting lines to second group selectors or to these themselves. 1 sheet of drawings.