DE644276C - Circuit arrangement for counting connections in telephone systems with dialer operation - Google Patents

Description

The present invention relates to a circuit arrangement for counting connections in telephone systems with dialer operation and refers to those systems in which the charge is dependent on both from the called (outgoing) as well as from the calling (incoming) line.

It is particularly advantageous in widely ramified networks with a large number of small centers (Landzentralen) applicable. In order to make the operation in such systems economical, have from the small centers only a relatively small number of the facilities necessary for the special requirements of the company, for example the facilities for determining the amount of the chargeable fee and for transmitting the metering current surges on the counter of the calling line.

The present invention now enables systems of this type to be as reliable as possible Way an automatic count according to the value of the connection established in that a connection device which has access to a plurality of incoming lines of different traffic directions (Subscriber lines, connecting lines), together with the connecting device, which on a desired number of outgoing lines different traffic directions is set on a meter update device acts so that the latter the counter of the calling line in a manner determined by both traffic directions influenced.

An exemplary embodiment of the subject matter of the invention is shown in the drawings.

The concept of the invention can be used, for example, in systems with the network design shown in FIG. 1. The centers marked A, B, C represent small switching centers, the office D a main switching center, in which the establishment of the connections is initiated and monitored from a civil servant's seat. The subscriber ./V _{1 of} the sub- exchange A arrives after the connection has been initiated and the call seeker AS is set to the workplace in the exchange D. The officer asks the calling subscriber and sets it up, depending on whether a local or network group connection is desired , a direction selector RW , via which the officer then either immediately sends a line selector LW to subscriber N ₂ of switching center A or, in the case of network group connections, for the purpose of calling subscriber N _e of switching center C, via the connection line L _{41 by further sending out number bursts} the in the exchange C

*) The patent seeker stated as the inventor:

Dipl.-Ing. Eduard Wochinger in Berlin.

ordered connection devices are set. Connections from other exchanges, for example exchange B, run via exchange A in such a way that. as when a subscriber of the sub-exchange A, ie the civil servant in the main exchange D ah :, is called, who then establishes the connection to the desired subscriber.

In FIG. 2, the part of the sub-exchange A framed with dashed lines is shown in detail. For the purpose of explaining the subject matter of the invention, the following six cases are considered:

i. Local connections running from subscriber / V ₁ to subscriber N ₂ .

2. Xetzgruppe connections, running from subscriber N ₁ via connecting line L ₁ to subscriber AV

3. Xnet group connections, running from subscriber N ^ via connecting line L ₁ to subscriber N ₂ .

. 4. Xetzgruppe connections, running from subscriber N ₃ via connecting lines L ₁ and L ₁ to subscriber N _e .

S long-distance connections, running from subscriber N ₁ via line L =, civil servant's place and long- distance line FL.

6. Remote connections from exchange 2? from, running from the subscriber N _x via the connecting lines L ₁ , L ₁ , via the officer's place in the exchange D

and FL pipeline.

i. Local connections within the exchange A

For all local calls, the calling party's counter should be used for a maximum call duration of 6 minutes can be advanced by one unit.

After initiating the connection on the part of the calling subscriber Af ₁ , an unillustrated call relay An responds, which switches on the relay N via earth, contacts 19 ", 2op, winding of relay N, battery, earth. The relay A ^ actuates two contacts S η and 21 n, which are arranged so that the contact 8 η is closed a little earlier than 21 ". If the call seeker AS is currently on the contact to which the calling connection line is connected, the test relay P responds immediately and prevents the call seeker from starting up by opening the contact 20/7. If this is not the case, however, contact 21 // closes the circuit for magnet Da of the call seeker: earth, contacts 19 on, 20 p, 21 «, 23 /% magnet Da, battery, earth. The magnet Da has a contact 22 da, by actuating a relay /? is switched on. The relay R opens the above-mentioned circuit for the magnet Da at the contact 23 r , so that the contact 22 da closes and thus a short circuit is formed for the winding of the relay R. The contact 23 is therefore r .-, j & Sifch short time closed so that the ^■■■:.: ¥ plgnetDff is turned on the call's viewfinder. The interplay between the magnet Da and the relay R continues until the caller has found the calling connection line and the following circuit is established: earth, switching arm dz _& in rest position, contacts gc, 8n, windings II and I of relay P. , Switching arm da _A , wire c and battery in the upstream device. The relay / ³ responds in this circuit, stops the caller by opening contact 10 p , blocks by switching off its high-resistance winding 11 at contact 7 ρ and switches through the speech wires by closing its contacts ι ρ and 2 ρ. When the contact 20 ρ opens, the relay N drops out. The relay / ^{3 also} closes its contact 45 ρ and connects the wire c ₂ with the battery. As a result, a mixer MW (Fig. 1) is started, which then comes to a standstill when the wires a ₂ , b ₂ , C ₂ have been found. Then the connection to the official's place in switching center D is established. The officer is made aware of the presence of a call by a signal, while the calling subscriber is also on wire «9 and the capacitors Co ₁ and Co ₂ , contacts 17 bb, SP, 3 k, 1 p, switching arm da _v wire« Signal is transmitted. The officer now enters into the connection by inserting the plug into the call handle, which at the same time applies a battery potential to the wire «, so that the relay / responds.

If the calling subscriber has only given the call stimulus and hung up his receiver again, relay Y is not energized, so contact 40 y is also open and the battery connected via contact 39 kh, resistor Wi _{9 is} switched off. (Applying the battery via WZ ₉ at this point would turn on a signal for the officer, by which she recognizes that the caller is waiting with the receiver lifted.) The officer now has the option of calling the subscriber who wants the connection. She presses a call button and thereby applies ₂ battery to wire b; As a result, the relay E is excited via contact 41 ν. By closing the contact ιοβέ "the following circuit is created for the relay W: earth, contact 106 ^, winding of the relay W, resistor VVZ ₈ , battery, earth. By closing the contact 33 w is the

Call machine RM is applied to the line δ leading to the subscriber, by means of which the call facility is actuated at the subscriber station. If the subscriber lifts his receiver, the following current flow occurs: earth, battery, resistance WZ ₄ , winding of relay X, contacts 28 /, 4 k, 3 k, ι p, switching arm da _t , subscriber loop, wire b, switching arm da ₂ , Contacts 2 p, 6 k, 32 w, 36 «, winding of the

j 0 relay Y, earth. Relays X and Y respond in this circuit. If the subscriber has just picked up his receiver while the ringing current is being transmitted, this circuit, since the contact 33 w is closed, cannot be established. It thus speaks to the relay X alone, which produces a short circuit for the winding of the relay W by closing its contact 108 χ. The relay W therefore drops out immediately, so that the relay F is also switched on by closing the contact 32 w. The relay Y closes its contact 40 y and thereby applies battery potential via contact 39 M and resistor Wi§ to the wire & ₂ leading to the officer’s seat . This gives the officer a signal informing her that the participant has reported. The relay / had closed a circuit for the relay C by closing its contact 67 /: earth, contact 67 i, winding of relay C, battery, earth. The relay C closes a hold circuit for itself at contact 55 c.

The officer asks the subscriber and sends out a to the relay / acting impulse series, through which a ₍₁ with the MagnetenD) existing direction selector RW is set from an auxiliary selector (with the magnet De) and a main selector, and that receives the magnet De of the auxiliary selector in the following way current impulses: earth, contacts 54 ^ ₁ , 109 /, 114 c, magnet De, battery, earth. When the relay / drops out for the first time, the following circuit is created for the relays V and V ₁ : earth, contacts 66 /, 65 c, winding of relay V, parallel winding of relay V ₁ , battery, earth. The magnet De of the auxiliary selector has a contact 43 de through which the relay H is switched on: earth, contact 43 de, winding of the relay //, battery, earth. After the end of the first current impulse and re-excitation of the relay /, the following circuit is established for the relay Ιζ: earth, contacts 73 i, 72 h, winding of the relay Ιζ, battery, earth. The relay Ιζ opens its contacts 3 k, 4 k, 6 k, whereby the speech wires are interrupted 'and the relays X and Y are brought to waste. After relay Y has dropped out, the following holding circuit is closed for relay Ιζ: Earth, contact 69 c, switching arm de ₂ , set to one of the first two contacts (setting of De to these contacts only for local connections), winding I of relay KJi, contacts 70 k, 71 y, winding of relay / C, battery, earth. The relay Kh also responds in this circuit.

After the end of the series of impulses, the relay / remains energized for a longer period of time, so that the relays V and V _{1 are} caused to drop if the contact 66 i is opened for a longer period of time. After ReMsV _{1 has} dropped, the following circuit is created for the magnet of the main selector Z) ₁ : Earth, battery, magnet D ₁ , contacts 113 A, 112V ₁ , switch arm de ₃ in working position, switch arm dl _h in rest position, contacts 110 A, 54P ₁ , - earth. Contact 44 d ₁ of magnet D ₁ switches on the relay //, which interrupts the circuit for D ₁ just mentioned at contact 110 A. This opens the contact 44 d ₁ again and causes the relay H to drop out. By closing the contact 110 h , a circuit for the magnet D _{1 is again} closed, which now takes the following course: earth, contacts 54 / J ₁ , 110A, switching arm dl _s in working position, magnet D ₁ , battery, earth. The interplay between the magnet D ₁ and the relay H continues until a free wire C _{3 is} found and the switching arm dl ^ has adjusted to the contact via which ground potential is switched on by switching arm d _x and contact 55 c . The following test circuit is then established: Earth, contact 55 c, switch arm de _t and switch arm dl ^ in certain positions, winding I of ReIaIsP ₁ , switch arm dl _z , wire C ₃ and the following: battery. The relay P ₁ sets itself by closing its contact S ⁰ Pi i ^{n the} following holding circuit: earth, battery, winding II of the relay P ₁ , contact SOp ₁ , Schaltarmoi / 4 and de _l in certain positions, contact 55 c, earth. By closing contact 49 P ₁ , direct ground potential is applied to wire C ₃ via contact 55 c, thereby blocking the subsequent connection device that has been found against other occupancy. To adjust the following line selector, the officer now sends out a series of impulses through which the relay / is de-energized in pulses, and which are transmitted _{to the line selector via contact 28 / and wire 3.} Further influencing of the magnets De and Dl is not possible because the contact 54 P _{1 is} open. If the line selector is set to the desired subscriber, ringing current is sent to the desired subscriber, which happens in the following way: By closing the contact 53 p _± , the following circuit was created for the relay / ⁷

closed: earth, contacts 53 / J ₁ , 52 x, 5 If ₁ , winding of relay / ⁷ . Battery, earth. The relay F closes its contact 104 / and thus a circuit for the magnet Dz: earth, contacts 105 "", 104 /, 99 kh, 102 r _x , 103 z, magnet Dz, battery, earth. The magnet Dz advances its switching arms dz _x to άζ- _ύ by one step. At the same time it closes its contact ι ο ι dz tmd thus the following circuit for relay Z: earth, contact ι ο ι dz, winding of relay Z, resistor WZ ₇ , battery, earth. The relay Z interrupts the circuit for the magnet Dz at contact 103 ζ , so that it drops out. The following holding circuit is closed for relay Z: earth, battery, resistor WZ ₇ , winding of relay Z, contacts 962, 97 th, 99 kh, 104 /, io5 ##. Earth. By closing contact 92 ζ , the following circuit is closed for relay R ₁ : earth, battery, winding of relay R ₁ , contacts 92 z, 99kh, 104 /, ι o $ aa. Earth. The relay R ₁ closes its contact ι oo r _x and thus creates a short circuit for the winding of the relay Z, which thus drops out and also causes the relay R ₁ to drop by opening its contact 92 2. The above-mentioned circuit for the magnet Dz is now closed again by contact 1032, so that a further switching of its switching arms takes place. The magnet Dz and the relays Z and R ₁ thus form an interrupter device through which the switching arms of the magnet Dz are incremented. Every time the switching arm Dz _{2 reaches} the interconnected contacts, the following circuit is closed for the relay W : earth, switching arm dz _ä , interconnected contacts, contact 107 /, winding of relay W, resistor Wig, battery, earth. The relay W closes its contact 33 w and thereby applies ringing current to the wire b ₃ leading to the desired subscriber, whereby the call device is actuated.

If the desired subscriber answers, a circuit for the relays X and Y is established via his loop: earth, battery, winding of relay X, contacts 28 /, 47 J) _x , switching arm dl _v wire U ₃ , loop over the called party Subscriber, Aderö ₃ , switching arm dL, contacts 48 / ^ ₁ , 32 »', 36 ^, winding of relay Y, earth. (If the subscriber has just reported while the ringing current is being applied, only relay X responds, which by closing its contact 108 χ creates a short circuit for relay W and interrupts the further transmission of ringing current at contact w . When contact 32 closes w also speaks to relay Y. ) By opening contact 71 y , the above-mentioned circuit for relay K is opened, so that by closing contacts 3 k, 4 k and 6 k, the speech wires are switched through and the conversation between the two participants can begin. Relay / ⁷ is caused to drop by opening contact 52 χ , so that the magnet Dz can no longer be influenced in the manner described due to the opening of contact 104 /.

However, goods at the time of reporting of the desired subscriber, then y by opening the contact 71 that is the switching arms of the magnet Dz not in the rest position relay Kh been so energized together with the relays K, as stated previously, not for Waste brought because it had closed the following holding circuit for itself: earth, switching arm dz _z in working position, contact 46 kh, winding II of the relay Kh, battery, earth. As a result, the contact 93 kh, via which the switching arm dz ^ earth is applied, is closed, so that the following circuit is now established for the magnet Dz : earth, battery, magnet Dz, contacts 1032, 102 r _x , 115s, 91 2 , Switching arm dz ± in working position, contact 93 kh, earth. By closing the contact 101 dz a circuit is closed for the relay Z, which opens the circuit of Dz just mentioned by opening the contact 103 2. By opening the contact 101 dz , the relay Z is again de-energized, so that the magnet Dz is switched on again by closing the contact 103 2. In this way, its switching arms are advanced by the magnet Dz , more quickly than before, since the relay R _{x is} now not involved. The game between the magnet Dz and the relay Z continues until the switching arms of the magnet Dz have reached their rest position. Then the holding circuit for the winding II of the relay Kh on the switching arm dz _{3 is} open, so that it drops and ti. a. its contact 93 kh opens and by disconnecting the ground potential from the switching arm dz _i prevents any further influence on Dz. The relay Kh has also closed its contact 39 kh . As a result, via contacts 40 y, 39 kh and resistor Wi _9, battery potential is applied to the line O ₂ leading to the Reamtinnenplatz and in this way a signal at the workplace is switched on, from which the officer recognizes that the speech connection between the participants is established. It therefore pulls the plug out of the latch, causing the relay / to waste. As a result, the iao relays V and V ₁ respond via contacts 66 / and 65 c. The following circuit is then created for the relay5: earth, contact

clocks 2 & p _v 2ζγ, 24 v, winding of relay S, battery, earth. By closing the contact for 18 s, the relay BB is excited via its first winding.

The time counting now begins, for which purpose the switching mechanism Dz is again used. After relay 5 has responded, the following circuit is created for magnet Dz: Earth, contacts 69 c, 94 s, 97 th, 102 ^ ₁ , 103 z, Ma-

«Ο gnet Dz, battery, earth. The switching mechanism Dz thus switches its switching arms to the first contact. Relay Z is switched on at contact loidz , which interrupts the circuit for Dz just mentioned at contact 103 ζ. The relay Z is in the following holding circuit: earth, battery, resistance Wi ₁ , winding of the relay Z, contacts

96 z, 94 s, 69 c, earth. At the same time, contact 68 ζ is closed and a thermal relay Th is heated. After some time, the contact 98 th is closed, whereby a short circuit is formed for the winding of the relay Z via contacts 98 th. The relay Z thus drops out and opens the circuit for the thermal relay at contact 68 ζ. After a certain cooling period, the contact will

97 th is closed again and thereby again the above-mentioned circuit for the magnet Dz is closed, so that the switching arms of this magnet are advanced by a further step. The resistance ratios in the switching mechanisms just mentioned are dimensioned in such a way that the distance between the individual increments is about V ₂ minutes. If the switching arm dz _{5 reaches} the 13th contact, ie if the conversation lasted 6 minutes, a short circuit is made for relay Y so that it drops out. The release of relay Y initiates counting and tripping.

The relay Y also drops out if the connected subscriber gives the final signal before the 6-minute time has elapsed. When relay Y drops out, contact 2 5 y opens the circuit of relay S, which thus drops out and opens its contact for 18 s. The relay BB has a certain dropout delay because it has a second winding shunted to the relay AA . During this fall time, the circuit for the counter of the calling station is closed: earth, battery, resistor Wi ₁ , contacts 15 s, 13 bb, switching arm ώ ₄ , counter Z, contacts ii £, 12 c, earth.

The counting current surge is ended by opening the contact 13 bb . Via contact 59 bb and also via contacts 57 αα and 56V ₁ , a short circuit is made for the winding of relay C, so that it is short

So time later comes to waste. The relay C opens its contact 10 c, via which the relay P was kept energized after switching Dz from the rest position, so that the relay P is now brought to fall. By opening the contact 55 c, the hold circuit for the relay P _{1 is} opened so that it drops out. The following circuit is now closed for magnet D ₁ : earth, contacts SAPv ¹¹ ° h, switching arm dl- _a in working position, magnet Dl, battery, earth. The magnet Dl actuates its contact 44 dl and thereby closes a circuit for the relay H, which responds and interrupts the circuit for Dl just mentioned at contact 11 o h. By opening the contact 44 dl , the relay H is switched off, so that the magnet Dl is again excited by closing the contact 11 o h. In this way, the switching arms of Dl are incremented until they have reached their rest position. The following circuit then arises for the magnet De: earth, contacts 54 ^ ₁ , 110 h, switch arm dl ₅ in rest position, switch arm de ₃ in working position, contact mc, magnet De, battery, earth. This magnet also works with the help of its contact 43 de with the relay H as a breaker and switches its switching arms to the rest position. The following circuit is then established for the magnet Dz : earth, contacts 54 p _v ι ι ο h, switch arms dl ₅ , de ₃ , both in the rest position, switch arm dz _i in the working position, contacts 91z, 115s, 102 r _v 103 z, Magnet Dz, battery, earth. The magnet Dz works with the help of its contact loidz 'and the RelaisZ, as already mentioned several times, as an interrupter and also brings its switching arms into the rest position. Then all the facilities have reached their rest position. .

Connections within the
Network group

2. Connections from subscriber N ₁
via connecting line L ₁ to subscriber Ng.

A one-time call should be made for such connections if the call lasts up to 3 minutes Forwarding, if the call lasts more than 3 minutes, two forwarding of the counter of the calling station. Maximum duration of the conversation 6 minutes.

Until the officer joins the connection, the processes all correspond to those for local connections. According to the desired traffic direction, the officer now sends a different series of rushes, whereby the auxiliary selector De is set in a different way, namely the. Switch arm de » on one of the last two contacts to which the resistor Wi ₁₀

connected. The main selector Dl then adjusts to the direction indicated by the auxiliary selector De , so that the switching arms ^ ZZ ₁ to di _{A are set} on the wires a _it b ±, C ₁ , and thus on the connecting line L ₁ . The officer then adjusts the connection devices in Office C, i. h, the line selector of switching center C is set to subscriber N ₆ after setting DL to ίο.

If the desired subscriber answers, the relays X and F respond in the manner described, and the time counting begins in the same way as already described. If the call is ended before 3 minutes have elapsed, the counter is incremented once, which takes place in the same way as before, namely the current is switched on at contact 25 j '. ¹ circuit for the relay S interrupted so that it drops out. The contact 1S 5 is opened, the relay BB - its winding 11 is shunted to the relay AA - - holds for a while, so that the counting circuit is closed: earth, battery, resistor VW ₁ , contacts 15> ■, 13 bb, switching arm da +. Counter Z, contacts 11 e, 12 c, earth. Triggering also takes place in the manner already described. The only difference in the mode of operation compared to the previously described local connection is that the relay Jf (Ii which causes the ringing current transmission remains unaffected, since in this case the ringing current transmission is controlled by devices of the desired exchange.

If the conversation lasts longer than 3 minutes, the switching arm dz _x reaches contact 7 in the course of its movement, so that the following circuit for the relay CC is closed: Earth, switching arm ^ Zz ₁ , contact 7, winding I of the relay CC , Contacts S (JtY ", SS bb, resistor VV7 ₁₂ , battery, earth. The relay CC immediately closes the following holding circuit: earth, contacts 69 c, 87 cc, winding II of the relay CC, battery, earth. The closure of the Contact 90 cc has no effect at the moment. Relay DD cannot yet respond because it is short-circuited via contact 88 bb and resistor WZ _12. When the call is ended and Y is dropped, either by hanging up the subscriber or by the maximum call duration of 6 minutes ( Relay Y short-circuited by dz ₅ in position 13) the counter of the calling station is incremented by one unit in the same way as with local connections Counting circuit that runs via contact 1 $ bb. Is carried out by energizing of the relay BB and off the counter at the contact 13 bb, because now the contact 88 bb and the short circuit is opened by the relay DD, energization of the relay DD in the following circuit: earth, battery, winding of the relay DD, contact 90 cc, resistance Wz ₁₁ , contacts 85 cc, 84 cc, soda, 75 "", switch arm de ₂ , contact 69 c, earth. The activation of the relay EE by contact 81 dd is initially irrelevant. The relay DD is in the following holding circuit: earth, battery, winding of relay DD, contact 90 "', resistor Wz ₁₁ , contacts 86 dd, 69 c, earth. The counting circuit is now closed again at contact 14 dd , so that the counter of the calling station is incremented by one more unit. The relay C, which in the meantime is short-circuited via contacts 59 bb, 57 a & and 56V ₁ , has such a drop-out delay that the triggering of the devices is prevented until the second counting current pulse is transmitted. The triggering then takes place in the manner already described. The relay CC and DD are discarded after opening the contact c 69th

3. Connection between the subscriber _go places N _{n of} the exchange B via the connecting line L ₁ to the subscriber N _{2 of} the exchange A.

Here, too, a one-time call is made with a call duration of up to 3 minutes If the call lasts more than 3 minutes, the counter will be incremented twice the calling station.

The caller arrives via connecting line L ₁ to the call seeker in the sub- "> o switching center ^; where the call relay An , not shown, responds and closes its contact 19« //. The call seeker is advanced in the manner already described, for as long as until it has adjusted itself to the connection line L ₁ , ie to the wires / Z ₁ , b _lt C _1. The switching arm da _i then reaches one of the last two interconnected contacts which are connected to the relay E in via contact 42 aa Call the officer, set up the connection, call the desired subscriber, etc. The direction selector RW is, since a subscriber of the sub-exchange A is required, set in the same way as described for local calls , ie the switching arm de _{2 of} the auxiliary selector is on the first contacts to which the winding I of the relay Kh ^la ° is connected.

If the connection is established before 3 minutes

utes ended, the relay S is brought to waste by contact 25 y , which opens its contact 18 s and closes its contact 15 s. The relay BB remains energized for a while, so that the following circuit is established: earth, battery, resistor Wi ₁ , contacts 15 s, 13 bb, switching arm da _x . Contact 42 aa, winding of relay E, earth. The relay E closes its contact 37 e and thereby applies voltage to the lower voice wire, whereby the relay E in the calling exchange B is energized: earth, battery, resistor Wi ₆ , contacts 37 e, 32 w, 6 k, 2 p , Switching arm da ₂ , wire O ₁ , the contact corresponding to the drawn contact 4 iy ! In the sub-exchange B, winding of the relay E in the sub-exchange B, - earth. By opening the contact 16 s, the battery up to then on the upper voice wire via resistor WZ _{4 is} switched off, so that the relay / in sub-exchange B that has been energized up to that point comes to waste. As a result, _{relay V and V 1} respond in sub-exchange B (previously the relays / *, / and C were energized there) in a circuit that corresponds to the following circuits: earth, contacts 66 /, 65 c, windings of the relays V and V ₁ , battery, earth. By closing the contact 64 e in the calling sub-exchange, the relays AA and BB arranged there are energized in a circuit which corresponds to the following: earth, contacts 66 /, 64 e, 62 dd, 61 ff, winding of relay AA and parallel to it second winding of relay BB, battery, earth. In exchange A , relay E closes a circuit in which relay AA is energized and relay BB continues to operate.

4 ". This circuit runs: earth, contacts 66 /, 642, 62 dd, 6iff, winding of relay AA and parallel to it, second winding of relay BB, battery, earth. By opening contact 420a , the relay for relay E circuit formed interrupted so that this falls. this 64 e of the circuit for the relays AA and BB is stopped at the contact, so that they fall off after a short time, at the contacts 59 bb and 57 produce a short circuit for the relay C and the initiate release. in the remote Unteramt B is provided in the lower office. <4, the voltage · is taken away by opening the contact ~ yj e, the relay e brought to waste. This relay opens its contact 64 £ corresponding contact, so that the relay AA and BB drop. However, these relays have a delayed dropping time, so that the counting circuit is closed for the calling subscriber in exchange B , which corresponds to the following circuits: earth, battery, resistance Wi ₁ , contacts 15 s, 13 bb, switching arm 'da _i; Counter Z, contacts 11 e, 12 c, earth. The device in exchanges A and B is then triggered when relay C drops.

If the conversation is maintained for longer than 3 minutes, the relay CC is energized when the switching arm dz _t reaches contact 7: earth, switching arm dz _u contact 7, winding I of relay CC, contacts 89 cc, 88 bb, resistor WZ ₁₂ , battery, earth. The relay CC is placed in a hold circuit via its winding II and the contacts 87 cc and 69 c. By closing the contact 90 cc , the excitation of the relay DD is prepared, which cannot take place at the moment because the winding of this relay is short-circuited by the contact 88 bb. The incrementing of the counter in the remote calling exchange by two units now takes place in the following way: The transmission of the first current impulse to the counter of the calling station takes place in the same way as has already been described. Thus, by opening the contact 25 y, the relay 5 is brought to waste and a circuit for the relay E is thereby closed. The first time voltage is applied to the lower speech artery, as already described. Closing contact 64 e maintains the circuit for relay BB through winding II while relay AA is energized. By opening this contact 42 aa , the circuit for relay E is interrupted, so that it drops out. By opening the contact 64 e, the relay BB overall in the short time to drop ¹ O "placed, while the relay AA keeps longer. During the on time of the rely BB beyond fall time of the relay AA, the following circuit for the relay DD closed: Earth, battery, the winding of relay DD freed from short circuit by contact 88 bb , contact go cc, resistor WZ ₁₁ , contacts 85 cc, 83 aa, 69 c, earth. Relay DD is in the following holding circuit: earth, battery Wick- no development of the relay dD, contact 90 cc, resistance Wi _11, contacts 86 dd, 69 c, earth. by closing of the contact i <± dd, after energizing of the relay AA and closing of the .Kontaktes 42 aa a renewed Excitation of relay E brought about: earth, battery, resistance Wi ₁ , contacts 15 s, 14 dd, switching arm da _it contact 42 aa, winding of relay E, earth. Relay DD opens its contact 62 dd and prevents the relays from being switched on again AA and BB. By closing the contacts 59 bb and 57 aa is used for the wick-

ment of the relay C made a short circuit and so initiated the triggering of the devices.

In the remote sub- exchange B of the calling subscriber, the relay / was brought to drop because in the exchange ^ 4 when the contact 16s was opened, the voltage that had been on the upper voice wire up to that point was removed. By ίο the first closing of the contact 37 ε , voltage was applied to the lower voice wire and the relay E in the sub-exchange B was thereby energized. In the sub-exchange i? speak now, since the contact corresponding to the contact 64 e is closed sen, the relays AA and BB to. After removal of the voltage in the sub-exchange A by opening the contact 37 e , the relay E in the remote sub-exchange is de-energized, so that it opens its contact corresponding to the contact 64 e and thus the circuit for the relays AA and BB. However, these relays have a delayed release time, so that the zajil circuit comes about for the first time via the contacts corresponding to contacts 15 s, 1 3 bb and we. If the voltage is applied to the lower voice wire for the second time from sub-office A by closing contact 37 ^, relay E in remote sub-exchange B is again activated, which in turn switches on relays AA and BB. If voltage is now taken from the lower voice wire for the second time in sub-exchange A , then E in the remote sub-exchange drops for the second time, and the counting circuit of the calling subscriber is closed for the second time.

The devices in the two sub-exchanges are already triggered described way.

4. A connection will now be described which is initiated by the subscriber N _{3 of} the sub-exchange B and which runs via the connection line L ₁ , the sub-exchange A via the connection line JL ₁ to the subscriber N _{0 of} the sub-exchange C.

It is assumed that for such a connection with a call duration of less than 3 minutes the counter of the calling connection point by one unit, with the duration of the call is advanced by three units over 3 minutes. Here, too, there should be a requirement that the highest permissible Talk time is 6 minutes.

The devices shown in FIG. 2 are assigned via wire C ₁ .

After the relay / ^{3 has} responded and a signal has been given to the officer by closing contact 45 /? it enters the connection, whereby, as previously described, the relay / is energized. By closing the contact 67 Z, the relay C is energized, which is placed in a hold circuit via 55c. The officer now establishes the desired connection by setting the direction selector RW in such a way that the switching arm de _{2 of} the auxiliary selector is set to the last two interconnected contacts to which the resistor IVZ _{10 is} connected. It should also be noted that the switching arm da ^ of the caller is on one of the last two interconnected contacts, which are connected to the relay E via contact 42 aa .

If the final signal is given after the end of the speech connection, which does not last 3 minutes, the relay Y drops out in the manner described, which interrupts the circuit for the relay S by opening its contact 25 y. Closing contact 15 s creates the following circuit for relay E: Earth, battery, resistor IVZ ₁ , contacts 15 s, 13 bb, switching arm da ₄ , contact 42 aa. Winding of relay E, earth. The relay E applies voltage to the lower voice wire by closing its contact 37c via resistor IVZ ₆ , whereby, as previously described in detail, the relay E in the remote sub-exchange B responds and there causes the incrementing of the counter of the calling station by one unit. The tripping of the devices, initiated by dropping the relay C in the short circuit, takes place as in the previous connection.

If the conversation lasts longer than 3 minutes, when the switching arm dz _x reaches contact 7 after this time, the relay CC is excited via its winding I: Earth, switching arm ^ Zz ₁ , contact 7, winding I of the relay CC, contacts 89 cc, 88 bb, resistor IVZ ₁₂ , battery, earth. The relay CC places itself in a hold circuit by closing its contact 87 cc, while the relay DD switched on by contact 90 cc cannot yet be excited because it is short-circuited by contact bb. If the Y relay drops when the call is terminated, either by the participant giving a final signal or after the permitted conversation time of minutes has elapsed, the relay S is again thrown off by opening contact 25 y , which remains for 15 s when its contact closes (contact 13 bb temporarily closed) the circuit for the relay E already described tao closes. By closing contact 37 e

. voltage is applied to the lower speech vein via resistor Wi _6. Closing contact 64 e creates the following circuit: earth, contacts 66 4 640, 62 dd, 61 ff, winding of relay AA, parallel to this second winding of relay BB, battery, earth. The relay BB is thus kept energized and the relay AA responds. The relay AA opens its contact 42 aa and thus the circuit for the relay E, which thus drops out and removes the voltage from the lower wire at contact 37 e. In the remote sub-office B, the counter of the calling station is now incremented by one unit in the manner described earlier. Opening contact 64 e opens the circuit for relays A4 and BB . Relay BB drops out before relay AA , so that the following circuit is established for relay DD : Earth, battery, winding of relay DD, contacts 90 cc, resistor WZ ₁₁ , contacts 8 5 cc, 83 aa and 84 cc , 80 dd, 7ζαα, switch arm de ₂ > contact 69 c, earth. The relay DD is placed in a hold circuit via contact 86 dd. If the relay AA drops out after a short time, the following circuit is created for the relay EE : earth, battery, winding of relay EE, contacts

81 dd, 75aa, switch arm de ₂ , contact 69 c, earth. The relay EE closes at the contact

82 ee a holding circle for itself. After relay AA has dropped, the following circuit is created for relay E for the purpose of the second influencing of the counter of the calling station: Earth, winding of relay E, contact 42 aa, switching arm da _l} contacts 14 dd, 15 s, resistor _{Wz 1} , battery , Earth. It is thus done for the second time by closing the contact 37 e voltage is applied to the lower speech vein. At the same time, a circuit is again closed at the contact 64 e for the relays AA and BB , which, however, now, since the contact 62 dd is open, runs via the contact 63 ee . By opening the contact 42 aa , the relay E is again thrown off, which thus removes the voltage from the lower speech artery for the second time and thus in the remote sub-office B the second incremental pulse is given to the counter of the calling station. A short time after opening of the contact 64 e falls again the relay BB from (relay AA adheres for a while), so that now the following circuit for the relay / ^7/7 comes about: earth, battery, winding of the relay FF, contacts 74 ee, 77 bb, 76 aa, switch arm de. ₂ , contact 69 c, earth. By closing its contact 78 ff , the relay / T ^{3- is placed} in a holding circuit running through contact 79 c. If the relay AA drops out shortly afterwards, a circuit for the relay E occurs for the third time, which takes the same course as before, so that now, for the third time, by closing the contact 37e, voltage is applied to the lower speech vein . Closing contact 64 e no longer has any effect on relays AA and BB, since contact 61 ff has been opened. Relay C was short-circuited at contacts 57 aa and 59 bb , which now drops out and, by opening its contact 69 c, opens the hold circuit for relay DD. By opening the contact 14 dd , the relay E is now finally de-energized, which now for the third time with contact 37 e removes the voltage from the lower speech artery. This means that the calling station's counter is incremented by one unit for the third time. After the relay C drops out, it is triggered in the manner already described. The relays EE and FF also drop out after contacts 69 c and 79 c have opened .

Remote connections

Long-distance connections run over the place of the officer, who also monitors them.

5. Let us first describe a connection which is initiated by the subscriber N _{x of} the sub-exchange A and which runs via the connection line L ₂ , main office D and trunk line / ⁷ /.

Since the officer does not make any setting of the direction selector RW during this connection, so that ReIaIsP ₁ cannot come either, the relay 5 remains de-energized. Therefore the relay BB at contact 18 s is not switched on.

After the final signal has been given and relay Y has dropped out, the officer receives a signal that is switched on by switching off the battery connected via contacts 40 y, 39 kh, resistance Wi _a and switching on the earth potential via contact 41 y and the winding of relay E.

The officer then activates a counting current impulse transmitter according to the value of the desired connection and its duration, through which pulses from switching center A are sent via line L _2. This pulse transmitter works quite slowly, and every time a current surge is sent, it causes the relay E to be energized via wire & ₂ , while the relay / is brought to drop out. The relay E is thus actuated in pulses. By closing contact 66 /, relays V and V _{1 are} switched on via contact 65c. When the first pulse arrives and relay E is excited for the first time, relays AA and BB are switched on via contacts 66 z, 64 e, 62 dd and 61 //

IO

switched on. After the first pulse and the relay E drops out , the circuit for the counter of the calling subscriber is the exchange /! closed in the following way: earth contacts 12 c, 11 e, Z counter, shifting ea bb _it contacts 13, 15 s, ₁ Wi resistor, battery, earth. Opening the contact 64 e also opens the circuit of the delayed relays AA and BB . The relay BB drops and ends the counting current surge by opening the contact 13 bb. The relay AA remains energized during the impulse transmission thanks to its large drop-out delay. This has the effect that a premature short-circuit and thereby triggering of the connection devices before the counting is finished is prevented, since the short-circuit produced for relay C is interrupted during the counting pulse at contact 60 bb.

When the second current surge arrives via wire b. ₂ takes place the renewed excitation of the relay E and again the switching on of the relay BB via contact 64 e. After the impulse has ceased and the relay E has dropped out, the counting circuit is restored, so that the counter Z is incremented again. In this way, the meter of the calling station receives as many counting current surges as are sent out by the officer through the counting current surge transmitter. After the end of the transmission of the counting current impulses and a prolonged drop in relay E , relay AA is also brought to drop out, so that relay C has a permanent short circuit across contacts 56 V ₁ , 57 aa, 59 bb . As a result, the release of the connection devices is initiated in the manner described earlier.

6. Finally, a long-distance connection will be described which is _{initiated by the subscriber, V 3 of} the sub-exchange B and runs over the connection line L ₁ , exchange A, connection line L ₂ , main office D and long- distance line FL .

The call seeker Da is set in such a way that his switching arm da _{i is} on the last two contacts. If, after the officer has given the final signal, the call termination signal is transmitted, she in turn activates her counting current impulse transmitter according to the value and duration of the connection. The relay E is now energized in pulses, so that the contact sy e is closed each time this relay is energized, and the contact 36 e when it drops. This results in application of voltage to the lower opening vein and advanced sewing by the same and thereby in previously described manner, the transmission of the Zählstromstöße to the counter of the calling subscriber station of the sub-switch B. All operations in this case still occur have already been described and can be derived from the predicted.

Claims (8)

Patent claims: i. Circuit arrangement for counting connections in telephone systems with dialer operation, in which the charge is dependent on both the called and the calling line, characterized in that a connection device (AS) which gives access to a plurality of incoming lines in different traffic directions (subscriber lines, connection lines ), together with the connection device (RW), which is set to a desired one of a plurality of outgoing lines in different traffic directions, acts on a counter incremental device (AA, BB, CC, DD, EE, FF, E) in such a way that the latter acts on the counter (Z) influenced the calling line in a manner determined by both traffic directions. 2. Circuit arrangement according to claim 1, characterized in that switching means (AA for incoming connecting lines, DD for outgoing connecting lines) are assigned to the counter incrementing device lines defining certain traffic directions, which can be influenced via the connecting means (AS, RW) building the connection path between incoming and outgoing lines are. 3. Circuit arrangement according to claim 2, characterized in that one of the Switching means (DD) characterizing a line of a certain traffic direction for higher-order connections a multiple counting brings about. i ° 5 4. Circuit arrangement according to claim 2, characterized in that the switching means (DD) characterizing an outgoing line of certain traffic direction ■ direction of the counter incremental device is also effective under the influence of the switching means (AA) indicating an incoming line of certain traffic direction and the crediting of the through initiates the traffic direction of the incoming line determined charge on the meter of the calling line. 5. Circuit arrangement according to claim 1 or 2, characterized in that the counter incremental device consists of a relay group (AA, BB, CC, DD, EE, FF, E) , which depends on the direction of traffic of the lines to be connected to one another is influenced either via one (AS or RW) or both (AS and RW) connecting devices that establish the connection path between incoming and outgoing lines. 6. Circuit arrangement according to claim ι for telephone systems, in which from the connection line between the connecting devices adjusting for incoming and outgoing lines, a leash connection line is branched off to another office, characterized in that in the case of connections running over the branched connection line, the influencing of the counter ■ a calling subscriber line (N _s ) causing switching means (E) of the counter incremental device can be influenced via the branched connecting line. 7. Circuit arrangement according to claim 6, characterized in that that relay (E) of the counter incrementing device is influenced by the counter current surges taking effect over the branched connecting line, which causes the identification of the traffic direction of certain incoming lines in the counter incremental device for connections not running over the branched connecting line . 8. Circuit arrangement according to claim 7, characterized in that the relay (E) acts depending on the traffic direction of the incoming line (subscriber line or connecting line) either directly on the counter of the calling station or via an incoming connecting line on a counting transmission device of an upstream exchange . 1 sheet of drawings