DE703055C - Circuit arrangement for telephone systems with dialer operation, whose connection points can initiate special services - Google Patents

Description

Circuit arrangement for telephone systems with dialer operation, whose Connection points can initiate special services In telephone systems - with dialer operation the = task. is. often set, the. Connection points, special services -` the most diverse Art with the greatest possible shared use of the existing speech connections between to enable two participants of an office serving institutions. The for this already proposed arrangements are readily idanri in economic Way - applicable, - if it is a relatively small number of different Special services acts and these are also predominantly on the normal telephone traffic refer to yourself.

If these prerequisites are not met, difficulties can arise occur in the most varied of ways. Just the addition of a new special service Extensive changes to the existing facilities can be made in an existing plant the exchange, yes it may even be necessary to carry out the new special service the subscribers with new devices to equip or to the existing apparatus: additional equipment in parallel to switch; as in many cases, the subsequent installation of: from buttons .o: .- like. in -the intercom is impossible .. -When the line network of a telephone-. Create special services -were made usable, which should be with the actual telephone traffic in no or only very loosely context, such as telephonic Dictations, alarm calls ,. Time signals, etc., can use the in the speech communication paths lying optionally to be set voters. cause that the number of election levels the system must be larger than: due to the number of connection points - is. The multiplication of the electoral level. However, by-Lein or two naturally influences the Profitability of the system and brings: also disadvantages for the participants since their connection numbers increase by the corresponding number of digits.

An economic and operational requirements as far as possible The system that takes into account should therefore be as complete as possible Exploitation of the capacity of the general position for connection lines. Furthermore But precautions must also be taken. be that the speech communication services deg @ facilities are burdened as little as possible with auxiliary directions for special services.

To the above claims also taking into account the various Authorizations of the subscriber units for the production of the various special services to achieve in the simplest way, according to the invention is an exclusively for Initiation of several special services, outside of those for the construction of normal Telephone connections to be used connection paths arranged switching device when a given by a connection point of the telephone system comes into effect Incentives under the influence: brought this junction, the switching device only in cooperation with the facilities that characterize the traffic authorization of connection points a desired special service is only arranged if the traffic authorization the calling connection point corresponds to the switching operations to be carried out for a special service.

The arrangement according to the invention can be particularly advantageously shown in Use systems in which the special services do not apply equally to all subscriber stations are available, but in which this is only possible for certain participants or Participant groups is the case, because it allows all possible in such systems To meet requirements at any time, even with existing systems.

Is z. B. demanded that the number of participant classes, is not determined by the number of special services, but that the participants of the different classes the most varied combinations of special services for Are to be made available, so this should be in the case of a larger number of special services (Intrusion, disconnection, queries, conference, local connections, district connections, Dictations, alarms, radio, time signal, etc.) with the familiar setups only be possible if those used for voice communication, but for special services shared facilities in one the monitoring possibility and the economic efficiency be complicated by additional devices in an unfavorable manner. This .avoid the 'arrangement according to the invention. - Another advantage of the invention consists in the fact that regardless of the type of traffic authorization and the thus-permitted Special services the devices at all connection points are equiped equally can, as for several, under Urnständ.s4-even for all special service and also independently whether before or during a speech connection, always the same code. drawing incentive can be given.

',. The arrangement according to the invention also allows the simplest possible way without major changes in the existing ones for the actual telephone traffic Facilities to change the traffic authorization of individual participants at any time and also new special services for all or individual participants or groups of participants to add.

In the drawings, as an embodiment. Of the invention is a System for ioo connection lines shown. Despite the different in the connection lines different traffic authorization problems it is possible to all To use ioo contact sets of the line selector for connecting lines, because all Changeovers that come into question for the implementation of a special service via the for the special services provided in the description below with identification selector designated switching device are initiated or carried out.

In the drawings, an embodiment of the invention is shown. 6 shows the basic structure of a telephone system according to the present invention. This is a private branch exchange in which connections are established within the branch exchange via: the call finderAS and line selectorLlh. A connection unit, consisting of caller AS and line selector L1; V, is now assigned a code dialer K Ih ', through which, depending on the traffic authorization.

As differently authorized participants in Fig. 6 i. the house points marked with H, 2. the subscribers with semi-office entitlement marked with NI./2, 3. the subscribers with full office entitlement marked with NIIl, ¢. the preferred subscribers designated by b N, 5. the night extensions designated by Na N and 6: the inner house offices designated by i H indicated.

The following special services are possible with the KW code selector: With code ii up to 15 cross connections via the call finder ASQ, -.

through code number 16 time signal ZS, through code number 17 and 18 inquiry connections via the Aiirtifsuclier ASIZ without uni, with the possibility of listening to the second subscriber of the main connection, through code number 2i information, through code number -27 dictation station, through code number 3 connections via the caller ASS for railway lines BL, through code number -1 connections to the Anit, through. Code number 5 Connections from the office, through code number 71 connection to occupied, lastii TCililelüin.'r, through key number 72 Forced disconnection of the \ .erliiiidiing of the li2: last subscriber, through key number 73 connection with people search system PS, through key number oi Veuermelder, through lieriiizitter o2 remote control, by cipher o3 guard control. With the number dialer li I "A assigned to the exchange line, the following special services can be initiated by those subscribers who are authorized to make connections with the exchange line, in addition to the special services possible through the dial number dialer li lt ': Through identification number 5.2, another subscriber's university number , by keriiiziitei- 3 3 disconnection of another subscriber from an anits connection_ by code number 54. Triggering of the code number dialer K TVA by keriiiziffei- 55 flickering to office, by code number 5o flickering to the 1 main body, by code number 8 return call via second Trunk.

For the purpose of establishing inquiry connections with transfer options when an exchange connection is established, the one in FIG. G indicated voter bit '.

I; It should be noted that the code dialer h l>#'' z. B. is a trained as a rotary selector dial (Fig. 1), which is when lifting. In the various contact realities , the switching arms a, b, c, d and lt are connected to a contact segment intended for the entire contact friction and the switching arms e, t and g, when set to a specific contact of a contact row, only via this specific contact Contact a circuit closed «-ard. The same design is provided for the code number selector hAll '(Fig. 5), which iilit its switching arms a7 to d7 when lifted into a certain row of contacts in the entire contact friction. a so-called. Contact lamella, as z. B. is used for multiple connections, is in connection, while the switching arms e7 to h; establish a connection with the individual contacts of the various rows of contacts. In accordance with the present invention the identification of the traffic authorization of the individual groups of participants by that the participants finitely determined traffic authorization summarized in groups and a call incentive through a. loading agreed to the group: ordered mailing list pass on, via which a driving license l: eiiiizeiclin; ° ii les relay for Effect is brought about. As shown in Fig. R can be seen, the switching mechanism D1 for the Group I, the rear derailleur l--, for, Iie Gruhhc 11, the rear derailleur D3 for the -tiruhpc I11 see. In the event of a connection; as a participant of the group I «-ard irgriidein switching means not brought into effect, so that too Influencing your aggregate (call sucherAS and 1, eiturigs%, - iililer LTU) assigned assigned code digit selector A If 'not iilög- is lich. In this group "find the date Participants connected who only connect formations within the nel) eii; telleiizeiitrale Animal sites can, such. B. the in Fig. 6- interpreted inner house places i Il. As from the figure; can be seen, are here- after z. B. eleven different, ezeiciiilete partial no finite differences provisions, tiri, i 1. House points, z. Railway stations, 3. Fernst: -u_-r set, 4. half- authorized extensions, @. full-time authorized extensions. G. preferred Subsidiaries, 7. Hatiptstellrii. B. night stations, G. Guard control station, 1o. Feu2rinelde- put, t i. inner house locations. The cases mentioned under 1 can be as from the cross designation in table 1 and the information in Table II, the Keniizifferriwälaler K ll ' and the Kenn- ziffermeähler KAII 'in the first and second Raise contact grater. By setting the Key figure voter's K il ' on the first con- clock series, namely on di; t contacts 11 to 15, can the home office Ouer connections submit via contact it @ a time sigilal, via Contact 17 an inquiry ini house and about Contact 18 made a conference call. In of contact row 2 of the code dialer IOV, via Isoiltal: t 2i, reaches the House office the general supervision and bad i Contact 27 a dictation station. The second listed station len, through the Kcino digit selector KII ' except for the aforementioned special services of House locations by setting de; Code numbers - i Selector KLT ' in the third contact grater connections with long-distance railway lines and District lines via any line contact. the third row of contacts of the code dialer li lI ' reach. r The third-party remote control can provide your Keiinzifternwähler E IV on contacts four-contact @ ihen 1.:. 3 and o to adjust. The @or: del-ciieiiste about the con- bars i to 3 are the same as for the railway stations. fit the contact series o des Kennziifernw <ililers K11 " can use the remote control points via the contact o1 vain party nieldstelle. via contact «2 a remote control place and -over 03 the guard control reach. The lialbatrts- named in fourth silence authorized extensions are cilmial for this- #: Ilieri wiu @lie an second position, @@ - ItaIIII @@@@ l # aliIi,; ttlleii; except- you can (lili "ch l-ilistelleii @Is Kenn- 7_1ftel'nZ @ `FtlIl @ l" 11 11 lIl which is) titalCT1'Clhl j as Night parts the during the absence of the Main unit incoming calls from the office elltgZ @ ellil_'IitI1eF1- 1); e ; In fifth Slelll -, '.- named persons entitled to vtailamis, l NCl @ CI1 @ tCllen are 1serccliti.gt for the same special services like the semi-official offices, and you can do it by setting the Root voter case- in the viel'te con- bar series 1 bindings to reach the office. In addition, they can be authorized to office Participants through Lin4tstellung #les germinating digit selector h11 ' on the contact grater 7, and to-ar via contact t, the intrusion to reach an occupied partner, over contact 9. 1 the forced disconnection and over Contact 7 3 the people search system. Thieves- preferred extensions are once for the the same special services as vain fully qualified \ elietistelle, moreover you can by I - inserting the code number - @, ählers K11 "on the eighth row of contacts, and although via contact Si, the feedback when busy microphone units become free conduct. All the special services that are possible via the code dialer Klh are available to the main offices mentioned in all seventh places. The night stations named in the eighth position have the same debit services available as the fully health-authorized participants named in the fifth position. Accordingly, the fifth place named full health service participants and the eighth place named night stations can be combined into a group. All of the ninth and tenth places named guard control points and fire protection points can obtain the same special services as the remote control points named third place; these participants thus also form a group of participants with a specific traffic authorization.

The all eleventh place named inner house parts can only internal connections animal places. therefore have no influence on the code dialer K11-. All microphone units, the connection opportunities to take office can now also the code selector KWA on the different connection options place. Connection options to the office have according to FIG. 7 only the call stations of @ TI-IIIllern 5, G, 7 and S, since only these Make the KennziffermälilerKiT% effective can adjust to the contact friction d. These microphone units can be set up when of the code dialer KWA on the bar series r over the 1solite bars 1 1. 1 2 1111 , 1 1 ,; Ouerverbindun:; en reach, filier contact th cause a time signal to be switched on and via contact 17 inquiries in the house hold without listening. By setting the Code dialer Kll'A in the second con- t @ tktreiiic küniieti these participants via contact bar 21 the main office and via contact 27 reach the dictation station. By setting the code dialer KAlll in the contact row 5 is connected via clock _ # 2 the assignment, filier contact; 3 the Possibility to separate an existing @% inheritance cliins. via contact 5: T tripping of the T @ ennzitteniwähler @ K [VA. over contact 5.5 Flickering to office 1111, l via contact 5o Flacl; L # rii brought about to the main body. By 1 - setting the number \ vähle- K1 V _-I in the eighth row of contacts is the back fra @@ eiliöbarkeit Tiber a second entertainment provided. In Fig. I, only three groups are now pen of participants of different traffic justification indicated, namely in the 19. 7 named inner Group I according to F ' House positions, in group 1I the fifth and eighth position named full authority tigteil extensions and night stations and in group III named the sixth place partly preferred extensions. In the following are now the individual Switching operations ran production of the various the best possible connection option on the part of the Participants with different traffic permissions described. House connections House connections can be established by all participants. For this purpose, a Teilneluner, z. B. in the Fis. I represented subscriber A ', who is connected in group TI, from his receiver, the following circuit is established in relay R: Earth, contact it through the loop of subscriber A', contact 2 t, winding 1 of relay R. "Battery, earth. The relay R prepares a test circuit by closing the contact 3r. Furthermore, by closing the contact d3r, a circuit seeker AS has reached the connection marked by contact 3r, and thus a circuit for the relay P and T via earth, contacts iac, i5g, winding I and II of the relay P, switching arm cl of the caller AS in the position of the caller, contact 3r1, relay T, battery, earth is closed. Relay P interrupts the circuit for the rotary magnet at contact 12p DAS of the call seeker AS. The contact 8p is also opened by relay P and, in this way, the occupancy of the call seeker AS via any of the distributors WV to WVg is prevented ltarm c, of the caller AS also addresses the relay T, which by opening the contacts 11 and 2 t opens the call circuit via the relay k and by closing the contact 16t maintains the test circuit independently of the contact 3r. Relay P switches through to contacts 17p and 18p, so that the following supply circuit now exists for the calling subscriber: Earth, battery, winding I of relay K, relay A ,, contact 17p, switching arm a, of the caller AS in the position of the calling subscriber N via the subscriber loop, switching arm b, of the caller AS, contact i8p, relay A2, winding 11 of relay X. Earth. In the aforementioned circuit, le (ligliclidiekelaisA, and A._ respond, while (read relay 1, since it is differential connected, its contacts are not actuated. Relay A, opens contact igd, and closes lid contact -20 (r " so (let relay V via earth, contact 20a, relay V, battery, earth is excited. Relay V closes contact 2 iv, so that the test circuit before the delay relay G is brought to drop by opening contact 8 p and its Contact 15g returns to the rest position, now runs through contact 21v.

The relay Iah, after the relay V has responded, remains independent of your switching mechanism WV., Tiber earth, contacts 5 - # - v, 53 br ,, relay BR ,, battery, earth. The contacts 54br to 59br are closed by the relay 13a, so that an effective setting of this code dialer 1U 'in the contact rows 1, 2, 3, 4, 5 and 7 is possible via the switching arm la of the code dialer KW.

The winding I of the relay P is short-circuited by the contact 2 2 p and thus the calling subscriber is blocked against occupancy in a known manner.

When relay R drops out, contact 45 r, and thus the circuit for (las relay U2, is opened. Relay U = opens contact 49 so that relay P1 for relay U2 and for rotary magnet D ,; des Distributor WV1 via earth, contacts 45 r ,, relay U2, contacts 46p2, 47d2, rotary magnet D2, battery, earth. In the aforementioned circuit, the relay UZ is energized, which prepares the test circuit for the selector distributor WITZ by closing contact 49u1 Rotary solenoid D2 switches the switching arm of distributor WV2 one step further, and at the same time contact 47d2 of switching magnet D2 interrupts the circuit for relay U2 and for switching magnet D1. Switching magnet D2 returns contact 47d2 to the rest position. The interruption at contact 47d 2 does not cause the relay U> to drop out, since the relay Uz is designed as a delay relay If contact 47d1 is closed again, the rotary magnet D2 also receives current and sc keep the switch in the switching mechanism WV "one step further and again interrupt the circuit for the switching magnet D2 at contact 47 d1. The switching unit WV = is now advanced until a free call seeker AS is found and the following circuit is established via the switching unit WV.: 1? r (le, contact 49 u1, winding 1 and II of relay P 2, switching arm ad of switching mechanism WV._. Contact 8p, relay G, battery, 1 # .rde. Through <read relay P., is activated once by opening the Contact 46p2 and closing of the l #, -. Otitaktes 50p1 (read relay L '' ._ kept energized independently of your circuit via the switching magnet D1 and by closing the contact 48 p2 the winding I of the relay P? Short-circuited so that the over the switchgear bVV., occupied call seeker AS , is blocked against further occupancy. The P \ .elais P .. also closes a circuit for a relay IHR at contact 51 p1. The circuit runs via earth, contact 51p "Schaltaren b ,, of the switching mechanism lf'l - '=, relay 13R "battery. 1 # .rde.

About the switching aria a8 of the switching mechanism LVV. is also excited (las lZelai; G, which closes a circuit for the switching magnet DAS of the caller AS by closing the contact 11ä. The circuit runs via earth, lsontakte iig, 12p. 13das, switching magnet DAS, battery, 1? r (le. The switching magnet PAS switches the switching arms one step further, opens its own circuit at the contact i3das, so that the switching magnet DAS is de-energized. The contact 13 is therefore closed and a circuit for the Schaltniagneten DAS is established again, whereby the Call searcher _AS is switched one step further. This is repeated until the switch c of the caller becomes de-energized and its contacts in the Rest position. The switching means of the Derailleur 14'G '. = Are back in the Brought to rest and can vain others Call incentive from another subscriber of the Include group 1.1. Sends min of the participant for the purpose of position of the line, v <ihlers LLV the first Stronis shock triangle, so «-ground the sub- breakthroughs at the subscriber station Relay .1, recorded and on the Ilub- inagneten 1I via the circuit earth, con- clock igU ,, -23Z ', 2d.1', 253 (, head contact 26k0 of the line selector 1.14 ',' Relay 1% s, 11t1 b - niaänetH, battery, earth set. Works the r first: Stroni. impact on torrent called torrent circle one, so% circi the relay C '; excited, (read (1C11 contact . '. 7 1 (; opens 111l (1 clenlKUntakt 2Suy closes, so (sat, call the line selector L IV leaves the Rubelare and thus the con- t <il <t 2 (, ko opens and contact 2 () ko closes the Stroniki-eis for (towards Huhinagne- ten Il and for the relay filier the head Wntakt 29 ko and contact 28 1r; runs. \ i'ähreti (i remain the Stronlstoßreille they (con bars des als `` Erzöl; ei-tinrisi-elais, ebikleten Relay U15 in the working position. Is the first Stroinimpreilie ended and thus the electricity circle for the liullniagneten Il and for the Relay tj; 1 <itier "time ain contact iya, under- ]) smelled, so falls (las l # ', elais U , a1), whereby (fier contact 28 1r ;, opened and the contact 27 1t ,; is closed. Also through the wtederliolte üttnung ün (1 closure of the bars ..; 20a, w, »lii-rii (1 of the Stronistollreilie remains (read delay relay I 'energized. Side of the participant (see the next surge series, so these current surges select the Rotary solenoids 1); one, namely on the following (lein ways: earth, contacts iga ,, 23'z ', 24.r, 25) ', hol) flcolltal; t 2gko, contact 271w, Wel- letikoiltakt 3 ( ) '1c' (leb l.eltltIlgs @ S'Idilel @ 1.11a holltakt 31 1r11 I: rlais (',,. I) rclini <kicks 1) ,. Battery, HI-1e. 11r1 rrstr stt-onistoll, (Irr on SOlgenttnntrntn = itll: rci: acts, excites (read helai, C ',. 'las 1l (-11 contact,; l 1r, <ittllet 111u1 (1c11 K () ntllkt3- '«, @ (ldief.lt. I) tirch (1e11 climbing The line selector 1_1V will also have a current surge a step t \ -citer ;; eaclialtet and thus the 4Vellettkotttakt 3 (1 «'ge (' ittitet and the contact 33r. ' @ # escldclssen. 1) e1 Str () mst () lakrcis for (gen 1) rellnagnctcn 1)., U11 (1 for the relay t ', ver is now running unahliiinhi- front \ Vellenkon- tact 30w and full, contact 31 lt, over (gen Contact 3_t (,. After completing the StrOllist series falls the relay tr ,, all, so class' with free his achieved via the line selector Participant, a test drinking circle on the Switch arm c., Of the line selector comes. The circuit runs over earth. K (intact 34'z '. 351 ("winding 1 11g1 (1 11 des Relay l ',, switching arm i: of the Leitun nswälilers 1.1-1 ' 111 of the position of the getviinscllteil part- over (read relay 7 ', not shown of the called party stinged battery, Earth. The relay I ', all speaks, switches the Lines to the KoiltaktetI3 () p, a and 37p, by: furthermore, the blocking of the desired participant is well known by short-circuiting the Wickhing 1. of the Re- lais Y ,, a111 contact 38p ,. Through relay 1 ', is a circuit via I? rde, relay inter- breaker RL ', relay I_, contacts 39b "40p1, Wavecolite pulse 337t ', contact 31 u ,,, relay U ,. 1) rehniagnet D ,, battery, earth closed. In the aforementioned circuit only that Relay 1_ in certain time periods the relay interruptor RC% het: itigt. Development corresponding to the actuation of the relay L -will by Üfinen the contacts 41 I and 421 and Closing the contacts 431 and 441 the call stroni (luelle Mal at (you to the desired partial nclliner leading line switched to all and so- init the participant called. Get in touch the all-called "direction finding device, so xvird in the Call pause, the following circuit is closed: Erdc, battery, L \ 'ivkltlng I of the relay l ", Re- lais b ',, Contacts 421, 36p ,, Scltaltarin o = des 1_.e% tungst @: ihlcrs 1,11 ' all the position of the other called subscriber Tiber (they subscriber loop of the eel-called partial nelinier. Switching anis h_ of the line selector LW, contacts 371'a. 411, l relay 13. ,, winding 1I of the lais 1 ", Isrde. In the aforementioned discussion group .Ili-eclieii only relays 1>, and l3 = on. That Relay 1 'is a differential relay, (read through the clit-set switched windings is not brought to the Aiishl-eciieii. By Relay V, becomes the circuit of relay L ain contact 3911, interrupted. By Re- lais sf, is (ler contact 75b, opened tin; l du r Koltltl <t 7 (ib, closed, so (sat (read Re- lais b ", over I: r @ te. K () iitakt 7 ((b1, helais 1" ,, Battery, 1: r (1 <- excited 11-1r (1. It is therefore the calling Teillichiner icud the called subscriber with each other tied together. Would like a partial ticket from group 1 Or 111 a \ @erllin (lung to produce; o he the assignment of the call searcher 11.S follows (read switch 1I "1", or! V1 'a to follow (Ie Way: Ihts the calling subscriber geol <Incte: 111111t (l, activated call relay h a "I'cilitcluiiers of group 1 excites the l) circular magnets I), above earth. Contact 4 (", Re- lrtis C. ',, contacts 5p1, 6 (I1, 1) reliniagliet 1) ,. Battery, earth. The Drehinagliet l) works finite its co-operation, as, e @ llstunter_ Crusher until the Schalfarin (res Keep «@erkes 4V4 ', a free: call finder AS finds tau 1'ri.ifstronikreis over (against the switchgear 44'1 ", zli- stood over which the relay P, he is excited. Relay P, blocks the call search rIS by short-circuiting the winding I of the Relay P, via contact lop, so that nunmelil the test; trotnl; i-eis over earth, contacts 7 x ,, Iop, winding II of the relay P ,, switching arm (les derailleur 1t'1 ', in the position of the free call finder; A, 5 ,. Kontal: ttgp, Re- lais G. Batterie, Erdk-. Relay P, holds relay L ', regardless of neon contact (@, and bd, over Contact c) p ,. The Eanstelllii- (1e; call seeker AS on the a12I'tlfen`len participant takes place in the same way as l, ei making a I-fat1; @ er llin (lung on the part of one: in the group Il connected participant. In Group III are the preferred @ellell; tellen connected. Used by a Levorzu-th place the incentive to manufacture If a connection is given, it will be through of the call relay assigned to the subscribers the incentive to shift solenoid D3's Derailleur l1'1 "3 given, namely by Closing: that of the Isontal: tes 6o 1 -.,. By closing l: leu of this communication becomes the relay L'3 and the rotary magnet D3 over alder. Koiltal: t 6oy- =. Relay l'3, Kontalae fit p3, 6_i13, rotary magnet D3, battery, earth energized. The turning ina; 'llet I7.3 shows the switching arms a, and 11g de, Sehaitt @@ crl: es 11-'l ", 3 a, -n step further, ö #i " opens the @iontala 6-a d3, so (let the switching P- 3troliilos becomes. The switching magnet D3 ; joins the Ilontalct 6a ( 13, and the Schafni agnet D3 receives a new stroke proud). This progression of the switching code 11 "!" - 3 takes place until over earth, con- clocks 63113, winding I and 1I of relay P3, Scha Marin a3 of the rear derailleur! T'1'3 in the Position of a free call seeker. z. B. des _ 1III'11f; uchers AS, via rolling cycle cSp, relay G, Ban'ei'lc, earth the relay P.3 is energized, the by overfining the contact 61 p;, - the strobe l: rei: for the switching magnet D ,, 3 interrupts and by closing the contact 64p3 (read Pelais C ', independent v_lin contact 61 p; 3 and 62 d3 is upheld. The relay P3 : locked by closing (read contact 6. # p3 nii1 all flows through Ei- @ le, contact 66p3, Sclialtiii-ni b ,, of the switching mechanism 1.1'I'3, relay f; R ,, Batt-eri. 1 # _r, -le a circuit for (read Relay DR ,. I: elais h12., Stops after > l3recllen v011 IZelai; 1 "independent of the switching @ t-erl: 11'1 " evil- I? I'dü, Kolit; thte @ 2 v, 67 111 :, Relay DR .., 1 = ratter: e, alder. 1? By Zias lZelais PR., Wenkn the contacts ( 18br. 1) 1s 74 br_ closed so that an effective , «Lile I: IFi; tellttil" des KeIinzifferIlt @ "alllel's KII" by the 1I1 @ler group 111 angC; chlo ;; eII-u Participant a111 (the K (intal: tl'rilleil I,. '., J, I, 7 u11_1 8 1113-lich. liel ffer; tellun- elIlcr internal @ 'el "li @ nd11 @ 1 on the part of a member of Group III n participant, the hiring of the Call seeker -IS atif the caller and the setting (line counter I 11 ' in which is already used in the production of an internal Connection on the part of one in group Il affiliated tciinellinei-; described Way. The AUSIO; tillg the j'erbIIIdltIlg ;; '1nI'1C11tt1Il- #len in the case of a connection on the part of a partial however, from groups 1, 1I and III elneril participants of their own is always v, -) in callers ail) IIäIlglg. The calling subscriber lays his handset on, so «-earth the relays A, and .4_ current- Come on. The relay .l, opens the circuit for the relay 1 'at contact 20u, and prepares am contact 19i7, noble s troin circle for the Aus1ö semagneten _Il v;) r, which is closed, as soon as the delay relay f 'has clock 23v opens t111; 1 contact 77Z closes. The circuit for the trip magnet .1I then runs over earth. Contacts 19e1 ,, 77-, ', Head contact 78.1 "o, Auslüsenlagnet JI, Bat- terie, earth. The _ \. Tisl () senia, -Ilet .1I leads d211 Leitttlzswüliler L IV back to the rest position. When relay 1 'drops out, the test circuit for the call seeker AS through Opening the contact -1 v interrupted. Pe- lais P and T fall off. The Priifstronikreis For the line selector, contact 347 ' `` 'opens, so (iaß also Relay P., his consortium brings clocks to rest. Does the lead counter reaches the rest position, so is the I, opl1contalct 7 8 ko opened and thus too the circuit of the release magnet _Il is broke. Is it a matter of a connection on the part of a participant from group II or III, so «" wrong with Schlulder connection through re- lais l 'also the circuit of authorization relay DR, or BR., ain contact 5 'v aut- separated. All switching middle. which are used in the production of an internal Lii1d11I1g 111 Use taken siIl!: 1, again il: the resting position. In the following «-grounds the @ chalt @ or_ described. those at the different Special services through the code number «counter hTI- enter. Oner @ -erl) indunrien As atls the fi. 7, Table 11, can be seen. «- earth connections. the time signal, Riicl: ask in-house and conference connection by setting the code number «-äh- lers 111l " on the first row of contacts. light. For (pese special services are like this Table I shows that with i to 1o named microphone units. Of these Participants; 1I1 (1st ule already executed the ; 1i1 fifth and eighth digit named full appointed nephew jobs and readjustments in of group II ( 1 # ig. r), while i-en (1 the sixth place mentioned before zu-teil \ Ebenatelleii in group llI £ - '4g. 1 ) are connected. \\ - iinscht z. B. a participant of a li-uI>I> e 1 1 or 111 establish a cross-connection deliver, d. 1i. a connection to another tcren \ level station system, the loading takes place l @ gun, @ eifies freiet): \ nrufsuchers AS in the lie reit: described way. Through the re- Iais B1 ,, or through the relay BR_ , the l1, tiiit; act 34b1, or 68 br = closed, so that via one of the aforementioned contacts and ('. the switch arm b of the code dialer K61 i Vig. i) the operation of the rotary magnet PK Z is enabled in the first row of contacts. often met; the setting of the call suchers AS on the calling subscriber is the supply circuit via -relays A, A1 and A = established. In this food Hreis only speak at first -relays A1 and A; a11. -In addition, the T ", clais V is excited. in front of the calling subscriber digits to establish a cross connection outlet - these are the code numbers ii lins i; - if the participant presses his key T, wodtircli (read lying in the feed circuit Differential relay 1 is energized and at the same time (read relay A = its contacts in the rest position brings. The relay Z stays above ground, Contacts 79v, ßoi) akz of the tripping element 11K1, 81-r, winding III of relay 1, bat- terie, earth. By responding to relay Y and all case of relay A. = the following comes Circuit for relay AU, established : Alder. Contacts 79v, resistor W, winding hinr 1 of the relay AU " contact 121-i-, 122aas_, 123a_, 1 - =. 1a1, contact 134: r, tripping position JIKZ, battery, earth. The release magnet JIKZ does not speak in (nasty circuit The relay AU, closes the contact 12 @ aic, and thus places the high-level winding 1 of relay A ('_ parallel to the tripping magnet JIK7. Since the release system JIK 7. is ohmic, this also speaks in parallel switched relay A ('.> not on. -After then Letting go of the 'fast 7' on the part of the iners \ - is (ler short circuit of relay A. = ; canceled so that relay A = is excited. This speaks (read relay AU = as a result of opening the contact 123a_ and Closing the contact 126a = on the following \\ "8g8, in: Earth. Battery. Winding I (18s Re- lais _-1 (-.,. I \ ontakt i 25a11 ,, \ -Vicklung 1 des Relay A (',. \\ "iclerstaiid l6', contact 79z, FiAe. The relay AU., Opens the contact 1 - = (11 ( _ and closes the contact 127 att_. I) aii-cli relay f, contact 2Jx is i; ffiiet, sn that an operation of the magnets H for the line selector LW is prevented when the code number is sent. The contacts 82x and 83x are closed by relay Y and thus the lines 81 and 85 are connected to the calling subscriber.

If the subscriber selects the first number of the code number ii, ie an i, the lifting magnet HKZ of the code number selector KW is operated in the following way: He contact 86a ,, 87v, 88 x, head contact 89 ko of the code number selector, relay U "lifting magnet HKZ of the code selector KW, battery, earth. The relay U7 responds at the first current impulse, opens contact 90u7 and closes contact 9i 1i7, so that after the first current impulse a circuit for the solenoid HKZ via. The head contact 92 ko and contact 91 1c7 is prepared. Since in the present case only one current impulse has been sent, the relay L "7 drops out after the first current impulse, and a circuit is now prepared for the rotary magnet DKZ of the code number selector KW by closing the contact 90117. If the subscriber sends the second digit of the code number for cross connections, in the present case also an i, this current impulse acts on the rotary magnet DKZ in the following way: earth, contact 86a, 87v, 88x, head contact 92 ko , Contact 9o r17, shaft contact 93 wkz, switching arm h of the code dial selector KW in decade i, contact 54 br or 68 br., Relay U8, rotary magnet DKZ, battery, earth. The relay U, located in series with your rotary magnet DKZ, is excited and closes contact 9414, so that any subsequent current surges independent of the shaft contact 93 7t'kz, switching arm il of the code selector KW, contacts 5q br, or 68 b12 via contact 9.11c8 can act on the 1) sliding magnet DKZ.

However, since in the present case only one current impulse has been sent out, the relay UB also drops out after this first current impulse and opens the contact 9.111e. The code dialer is now set to .den first contact of contact row i. As can now be seen from Fig. 2, with the aforementioned setting of the code dialer KW via the switching arm c and g of the code dialer KW, there is the following circuit: earth, contact 95sp, switching arm c of the code dialer KW in the first row of contacts, contact 96 and 8, switching arm g des Key number wälilers KW in position i of the first row of contacts,. Relay on, battery, earth. By relay Aii we: l the contact 97a1 closed, so that a circuit for the rotary magnet D6 of the caller ASO is closed via earth, secondary winding of the transformer L1, contact 97an, 98p8, 99d "rotary magnet Ds, battery, earth. The rotary magnet DE switches: the switching arms of the call seeker ASO one step further and at the same time interrupts its own circuit at contact 99 d, switching magnet DB is de-energized, closes contact 99 d, so that a new circuit for switching magnet DE is established , takes place until the following circuit is established: earth, battery, contact ioox, relay SP, contact ioi sp, switching arm b: of the code dialer KW in the first row of contacts, contact io2tcG, switching arm f of the code dialer KW on contact i of the first row of contacts , Line 1 03, switching arm c, of the caller ASO, relay P, earth In the aforementioned circuit, the relay SP responds first, -that is its contact ioi sp opens and the contact lo4sp closes. As a result, the aforementioned circuit is maintained independently of the switching arms b and f of the code dialer KW via earth, battery, contact iooa-, relay SP, contact lo4sp, Schaltann c, the caller ASO, relay P, earth. Relay P, disconnects the circuit of switching magnet D6 at contact 98p,;. A dial tone is now transmitted to the calling subscriber in the following way: The dial tone is transmitted to the secondary winding of the transformer Ü and from here via the contacts 97aza, 105p, line i06, switching arm e of the code dialer KW to position i of the first contact row , Contact 1o724, switching arm a of the code dialer KLl%, line 85 in Fig. A and i, contact 83x in Fig. I, 17p, switching arm a1 of the call seeker AS in the position: the caller via the subscriber loop of the last-named subscriber, switching arm b1 .des Call seeker AS, contact i 8 p, relay A2, winding II ides relay X to earth your subscriber transmits. Relay P is used to switch the cross-connection line OL according to FIG. 2) to the contacts io8pa and iogps. The calling subscriber is thus connected via the call finder AS, the lines 84, 85 and the call finder ASU to the cross-connection line OL and can now set the connection devices reached via the cross-connection line by operating his number switch.

If, after the call has ended, the calling subscriber hangs up his receiver via the connecting line OL, the relays A1 and A2 turn de-energized according to FIG. As a result, the relay I% is also de-energized as a result of the opening of contact 2o a1. When the relay V drops out, the release magnet MKZ of the code dialer now receives current via earth, contacts 86a, iiov, head contact of the code dialer iii ko, release magnet JIKZ, battery, earth and returns Iden code dialer to the rest position. By energizing the tripping magnet IIKZ, the contact 8o vnkz, which disconnects the holding circuit for relay X, is also opened. Relay X opens the test circuit for the call seeker ASO of the connecting line OL at the contact i oo _i in FIG. A, so that the relays Sp and P ,; fall off. Relay in Fig: i opens the test circuit of the call seeker AS at contact 2i v , so that the relays P and 7 'of the calling subscriber are also brought to waste. Thus, all switching means that have been used are again in the rest position.

If a participant wishes a cross-connection line in the direction of 12-i5, so the code dialer becomes a call finder corresponding to the traffic direction for connection to lines 8.1 and 85 in the same way as for the code number i i described, causes.

As can be seen from the above description, the code dialer K W set to a specific contact via which a call seeker ASO for Cross connections for setting on the lines 84, 85 is caused. It can However, precautions must be taken to ensure that the code selector KTV is set on a certain contact has the possibility to have several contacts in automatic To switch movement away in order to choose a free one of several call seekers ASO.

Furthermore, it can be seen from the above description: that the call searcher ASO adjusts itself to the lines 84, 85 which cut between the call searcher AS and the line selector LW . In the same way as the call seeker ASO adjusts itself to the lines 84 and 85, this ASO could also adjust itself to the lines 144, 14 ', 1: 1.7 and then the connection devices which initiate the setting of the call seeker ASO, that is Call searcher AS and the 1, # '- number counter KW, are released again.

The establishment of a connection via the cross-connection lines OL is also possible during an existing connection between the subscribers N and A "1 according to FIG.

Is there a connection between a participant N and the participant N, in Fi: g. i, so can the one from part i. Ellnler V called Participant 1%, establish an earth connection via the cross-connection line. By pressing the button and thus energizing the relay Y in the supply circuit of the \ ebetitelle 1 ", and the relay B ;; drops out of the KetitizifferilwiihlerKLI 'under the influence the call station \ :, brought. The switching processes involved in establishing a cross-connection through the subscriber 1 'by means of the relays X and: f = brought about "earth, the relays F and B_ are now initiated. Time signal The: in the first up to the tenth position of the figure; l'eilnehiner mentioned have the opportunity to go through Setting the code dialer on contact 16 connected to a time signal to become.

It is assumed that a subscriber of group II wants to be connected to the execution which gives the time signal. The setting of the caller AS to the calling subscriber takes place in the described manner of group 11 the relay BR, is energized, which by closing the contact 5: 1st br, in Fig d: e same as when setting the germinal purpose of creating a cross connection. The switching arms a, b and c in 1`i g. -z are set to the contact row z, while the switching arms e, f and g can be set to contact 6. In this 1 # all the calling subscriber is then via the following rn \\ - eg with the signaling device Sig vei-huildeii: from the Siänaleiarichtung Sg via switching arm c of the indicator selector K [U in position 6 of the first contact row, contact io7 ir ", Sehaltarni er of the code dialer Kbf "in the first contact row, line R7 (1" i ". 1) Contact 83 _r, 17p, switching arm a, of the caller AS in the position of the caller via ilie subscriber loop of the TeihiehnierN. Switching arm b, of the call finder AS. Contact 18p via relay A .. `winding 11 of relay N to earth.

The release of the connection devices in use as already described. caused by the relays A and A = dropping out.

The connection of the time signal via the code selector K ft "l; can almost also be brought about when a connection is established between a part of the subscriber _ \ 'and 1' of FIG. Is there a connection between the both participants V and N "in Fig. i, so the called subscriber can also: 'V, die Activation of the time signal by setting of the code dialer KU, 'bring about. By pressing the T button on the speech put N, the participant excites 1 ', the re- lais Y and disconnects the relay Bz fall. The switching processes that occur at Einsc 1 tion .cles time signals through the call Subscriber N through the relays X and A, hex " will now be brought about by ' the relays Y and B_ made. Inquiries in the house If there is a connection between a subscriber in group II or 111 and a subscriber N, as shown in FIG , of the code selector KW in Fig. t brought about.

The code number for establishing inquiry connections in the house is, as can be seen from table 11 in FIG. The setting of the code dialer is carried out in the manner described. After the setting, the switching arms a, b and c in Fig. 2 are raised to the first row of contacts, while the switching arms e, f and g are set to contact 7 ;. In this case, the following circuit is established via the switching arms c and g of the code dialer KW : Earth, Kont.akt95sp, Schaltarmc of the code dialer KW in the first row of contacts, contact 96 and 8, Schaltami g total code dialer on contact 7 of the first row of contacts, relay on ,, Battery, earth. By relay type, the contact i 12 is closed, so that the rotary solenoid D, of the caller ASR current via earth, secondary winding of the transformer l: `, contact 112 ax" 113 p5, 1 14d "rotary solenoid D ;, battery, earth receives. The rotary magnet D7 works with its contact 114 d ,. as Selhsxunterll.recher until the call seeker AS R has found the unit via which the subscribers are connected to one another. In this case, the following test circuit is established: Earth, battery, contact ioox, relay SP, contact toi sp, switching arm b of the code dialer KW in the first row of contacts, contact to2u "switching arm f of the code dialer KW on Knntakt7 of the first row of contacts, winding l of the relay RF, line 103, switching arm c4 An, rufsuchers ASR, relay P., earth. in the above circuit, the relay P ,, speaks at first, opens at the contact i 13 p5 the circuit for the rotary magnet DZ, thus following the call viewfinder ASR silent By closing the contact i 15 p5 the calling subscriber receives a dial tone over earth. Secondary winding of the dial tone transmitter Ü ', contacts i 1- arzl, 115 p5, switching arm e of the code digit selector in position 7, Kanta @ kt 1a7 iia, switching arm ra of the Kennzifferuwälilers in the first row of contacts, line 85 (Fig. i) contacts 83, x, I7p, switching arm a "of the caller AS in the position of the calling subscriber via the subscriber loop". Switching arm b1 of the 'call viewfinder AS, p i8 contacts, relays A2, winding 11 of the relay 1i earth. Relay P in the test circuit of the call seeker ASR in Fig. 2 also connects the consultation line RL to the contacts ii (p., -, and i 1 7 ps-In the test circuit .des call seeker ASR, the relay RF also responds, the creates itself a holding circuit via winding II by closing contact i i8rf. The holding circuit for relay RF runs via earth, winding II of relay RF, contacts 118 r f, ioa x, battery, earth. Relays .RF are in Fig. I the contacts i 19rf and i2orf open and thus; the connection between the calling subscriber and the subscriber 1V, separated.

The relay SP 'also speaks in the test circuit of the call seeker ASR am. .das by opening the ioi sp contact and closing the io4sp_ .den contact Test circuit independent of the switching arms b and f of the code dial Earth, battery, contact ioo.x, relay SP, contact io4sp, switch arm c4 of the caller ASR, relay P,;, earth maintains.

The calling subscriber is now via the call finder AS, contacts 82x and 83 .x, lines 8: 1, 8: 5, switching arm a4 and h4 of the caller ASR, contacts i 16 p, and i i7 p "- connected to the consultation line RL. The calling subscriber can now for the purpose of setting the connection devices reached via the line RL Send out electrical surges.

If the calling subscriber wishes to use the after the query has been completed Consultation line RL to connect again with the subscriber N1, so must press the T key again.

As can be seen from the description of the establishment of cross-connections, after the first key press there is the following circuit for the relays AU, and AU2 in Fig. Winding I of the relay AU "Kontalet 125 aztl, winding. I of the relay AU., Battery, earth. This circuit also exists after the first key press for the purpose of establishing an inquiry connection.

By the renewed pressure of the trast on the part of the calling station, JasRelaisa is short-circuited again, so that the following circuit now comes about: earth, battery, release magnet 11K7-, head contact iii ka of the KeanzifferwälilersK Irl ',. Contacts i 24a "123a2, i 27 utts, winding 11 of the: ReIais AU., Winding II of the relay AU2, resistor IV, contact 79v, earth. The winding II of the relay: AU-, is connected in the opposite direction to the winding I of the relay AU, so that 'the relay AL'1 returns its contacts to the rest position. The relay AE; 2 is energized, so that when the relay A_- comes: earth, contact 128 au " 129 au-., 126 a J, 124 a1, head contact iii ha of the code dialer KW ,: release magnet: lIKZ, battery. Earth. The attslüseinagnet, IIK "f_ leads the code number selector KW back to the rest position. When the key is pressed , the excitation circuit for the relay AU the tripping magnet JIKZ via contact i29au .; comes about before the relay.4U = returns its contacts to the rest position as a result of opening contact 123a: .2 Relay X canceled. The calling subscriber is disconnected from lines 84 "8 5 by opening contacts 82.z # and $ 3. R. On the other hand is through. Opening the contact ioox in Fig. 2, the test circuit for the call searcherASR of the inquiry line and thus the holding circuit for the relay SP and also the holding circuit for the relay RF via the winding II is disconnected. This causes the relays P ,, SP and RF alx to drop.

In FIG. I the contacts iigrf and iaoc-f are closed, and. the calling subscriber is now connected to subscriber 1G'1 again.

If there is a connection between a participant in group II or III, there is one participant N from his own system, so is deni's. Subscriber of group II or III called subscriber Ni, able to establish a consultation call, the called subscriber presses N ,,. for the purpose of establishing an inquiry connection his key T ,. As a result, the differential relay 1- in the feed circuit of the called subscriber is excited and relay B .. short-circuited. The same switching operations that were caused by the relays X and A.> when a caller was making an inquiry call, "-earth now through relays I" and B. With relay 1, - the contact 25y is opened once , so that the lifting magnet H of the line selector LIf 'is prevented from being influenced by the Stronistol3reilien to be sent out for the purpose of establishing the inquiry connection, namely the code number and also the subsequent Stronistimpreilien for setting the connection devices on the inquiry line RL according to FIG. 2. Relay I' holds via earth, contacts 79v, 801111,7s, 13o y, winding 111 of the relay 1 ". Battery, earth. Relay I- prepares the circuit for relay <1L.'1 at contact 131 y. Furthermore, the called subscriber 1'1 is connected to the lines 84, 85 by closing the contacts 132y and 133-v. The circuit for relay AU1 is established via I # contact 135y, while the circuit for the lifting magnet HKZ and for the rotary magnet HKZ is prepared via contact 136v. The circuit for relay .1L'1 is connected to earth, contact 79v, resistor Ih ', winding I of relay .9L'1, contact 131 y 122 att-1391J., 1381) " 135y, .-' £ usloseniagtiet JIKZ des Code dialer, battery, earth when the key is pressed and thus the relay 1 'is excited and the relay B. @ drops out. Relay .1C'1 closes the contact 125 airl, so that after the key has been pressed and the relay B_ responds and the contact 139 opens b- and closing of contact 157 b. a circuit for relay AU1 and AU, via earth, contact 79 '<<, resistor TV, winding I of relay .1L'1, contact 125 atrl, winding I of relay AU. " Battery, earth exists.

If the partial nelinier: V1 sends the first digit of the code number for inquiry, which is code number 17 in the present case, the first current impulse is transmitted through relay B1 to the lifting magnet HRZ. The circuit runs via earth, contacts 75 b ,, 140 v " 877 '. 136y, head contact 89 ko of the code dialer KI1', relay (T" lifting magnet HK Z of the code dialer, battery, earth. The lifting magnet HKZ loves the switching arms of the code dialer KW in the first row of contacts.

If the code number selector K TV leaves the rest position, then, as already described, the contact 89 ko is opened and the head contact 92 ko is closed.

If the first current surge line consisted of more current surges, the subsequent current surges would act on the lifting magnet HKZ via head contact 02 k-0, contact 91 il-, of the control relay U. Since in the present case only one StronistoLl is given, the relay L.'7 drops out after this current stole, so that the following current impulses of the second code number via earth, contact 7 5 b1, 140v1, 877 ', 136Y, Head contact 92 ko, contact 9o it ;, \ Velletikontakt 93 wkz of the code dialer KW, switching arm h of the code dialer KW in position i via contact 54b1-1, relay L '"rotary magnet DKZ of the code dialer KLh, battery, earth After your first turning step and thus the relay L @ 's responding, DKZ receives the further current impulses independently of the Vellenkontakt 93-zr'kz, switching arm h of the code dialer KW in position I, contact 5.Ibr, via contact 94116.

As can be seen from the above, the called subscriber is also able, depending on the traffic authorization of the calling subscriber, to initiate the establishment of an inquiry connection. The setting of the call seeker A.SR of the inquiry line after setting the Ketmzifferwä blers on the contact 17 takes place in the same way as by a calling party. The test circuit for the call seeker AS R runs instead via contact ioox in FIG. 2 via contact is y. The holding circuit for relay .S1 'and for the relay RF runs in the same way via this contact 141 y.

If the called subscriber wishes to reconnect with the subscriber from whom he was called after the consultation call has ended, the subscriber X1 presses the button, whereby the relay B. is again short-circuited and his contacts return to the rest position. This creates the following circuit for the counter-winding of the relay: 9L,% 1: earth, contact 79v, resistance W, winding 11 of relay A Uz, winding kt of relay AC'1, contacts 1 270i1_, 1391 =, 138b1, 1351, tripping magnet 1IKZ of the code selector KW, battery, earth. Due to the reverse winding, the contacts of the relay AU, in 1 are returned to the rest position, so that they are above ground. Contacts 12861i ,, 1.29a11 .., 126a_, i 24a ,. 1353, release solenoid _11KZ of the code dialer, battery. Earth a circuit is created in which the release magnet is actuated. The release magnet 1IKZ leads the Kennzlfernwähler Kth back to the rest position and interrupts the holding circuit for the relay I 'at the contact 8o lnkz, so that this relay I' returns its contacts to the rest position. By opening the contacts 132y and 133y "-ard, the subscriber N" is disconnected from the lines 84, 85. The circuit for the release magnet is interrupted at contact 135y; -the release magnet remains excited via the head contact i 11 ko until the selector has returned the switch arms to the rest position.

Relay Y also opens the test circuit for the call seeker ASR at contact 1.41 y in FIG. 2 and thus also the holding circuits for the relay RF and SP. By dropping the relay RF and closing the contacts i 19 rf and i 2o rf in FIG. Konferenzv onnectivity As is apparent from the description of the operations at the production of inquiry compounds which interconnected respective participants are provided by the relay RF in Fig. 2, the main compound in the preparation of a call-back connection to the contacts 119 y f and 12o rf separated so that each of the Inquiry connection establishing subscriber is connected solely via lines 84, 85, the call searcher ASR and the connection devices via the inquiry line RL with the inquiry participant.

If, however, there is a conference connection with three people, ie if both the calling participant and the called participant Ni as shown in FIG Main connection established after pressing the earthing button, as described for establishing an inquiry connection. However, when the code dialer is set to contact 8 of the first row of contacts, the relay RF is not energized, so that the two subscribers of the main connection in FIG. As from Fig. 2, the winding I of the relay RF is bridged when the code selector KW is set to the eighth contact of the first row of contacts, so that this relay is not made to respond.

The code dialer is triggered after a conference call has been made in the same way as when a consultation call is triggered. Dictation call If a participant wishes to give up a dictation by telephone, the calling participant reaches the dictation station by dialing the code number 27 (see FIG. 7). By selecting the code number 27, as can be seen from Fig. 3, the code number selector is set to a latch M, which is arranged in the writing room on a small cupboard. The setting. of the code dialer KTTl takes place in the manner described. The supervision in the writing room leads to an above ground, switching arm c of the code selector KW in the second row of contacts, contact 96zcG, switching arm. g of the code dialer KW in position 7 of the second row of contacts, lamp L, resistor Wi, battery, earth, a plug in the jack KI and is thus connected to the calling subscriber via lines 84, 85, 148, 149.

If the calling subscriber wishes to give a short dictation, it leads the supervisor in the writing room puts the plug St into the handle K1. This will by the latch contact 142, the lamp L is extinguished and the calling one Participants connected to a dictation station St. When the dictation is finished, the Relay A3 de-energized and closes contact 143 a3, so that the tail lamp SL over Earth, battery, contact 1q.3 a3, tail lamp SZ, plug St in the jack KI, earth is made to light up. The supervisor in the writing room then removed the plug St from the latch KL.

The triggering of the connection devices taken into use is, as already described, by dropping the relays A1 and A2 according to Fig.i after Hanging up the handset brought about by the caller.

If the calling subscriber wishes to give a longer dictation, so the supervisor in the writing room does not insert the plug into the KI handle, but instead into a jack NKl that is individually assigned to the extension participant. The calling Subscriber is then directly over the lines 1.4q., 1.45, extension jack NKL in the writing room, plug St with the dictation station. St. tied together. Through the Pawl contact 146 is connected to earth directly to line 1.47 and thereby the P relay of the call seeker AS 'in Fig. i de-energized. The relay P brings his Contacts return to the rest position and thus opens the contacts 17p and 18p Circuit for the relays A1 and A .. This triggers the in use taken connection devices, namely the call searcher AS and the code dialer KW. If the calling subscriber hangs up after the dictation is finished, will the relay A3 de-energized, the closing lamp by closing the contact 143 a3 SZ lights up. The up : ficht ini writing room separates by removing the plug S t from the extension jack \ 'KI the connection.

As can be seen from FIG. 3, the lines 148, t: I9 are connected to the lines 8: I, 85, so that there is the possibility of being able to directly reach special intercom stations with which a calling subscriber can use further individual contacts of the second row of contacts wants to conduct a short conversation for the purpose of an inquiry or a conference without first using a special inquiry path via a call searcher .4. @ R fier inquiry connections. The distinction as to whether an inquiry or conference call is desired via individual contacts of the second row of contacts can be made in the same way once by not addressing and by discussing a relay corresponding to your relay RF. Intrusion As can be seen from FIG. 7, Table 1I, the code number for intrusion is 7i. According to Table I, the call stations named in fifth to eighth positions have the option to connect. As already stated, z_. B. the fully authorized subscribers in group 1I according to Fig. I connected. If a subscriber in this group has established a connection to a subscriber N1 and this subscriber X1 is busy, the calling subscriber can initiate an intrusion to the called subscriber in the following manner by dialing the code 71 after briefly pressing the 7 'key zu einer Teilneliiner.Vl takes place in the manner already described. However, since the subscriber N1 is busy, a test circuit for the relay P.1 via the switching arm c # of the line selector LIV does not come about. Rather, the calling subscriber receives the busy signal in a known manner. In order to be able to intrude on the occupied subscriber, the calling subscriber presses the button and excites: Relay Y. The switching processes already described are thereby brought about. After the key has been pressed, the indicator K PV is raised to the seventh contact grater. Since in the present case it is a participant of group 1I. the relay BR is energized, which enables the actuation of the triple magnet DKZ in contact row 7 by closing the contact 59br. After setting the code dial selector KII 'to the seventh contact grater, the code dial selector is set to the first contact of the seventh contact grater by the subsequent surge of the second series of impulses. In this case, the following circuit is established for relay P4 via switching arms c and g of the code dialer KhV: Earth, switching arm c of the code dialer in the seventh contact row, contact 96 erb, switching arm g of the code dialer K LG 'on contact i of the seventh contact row, Winding III of relay P4, battery, earth. The relay 1'4, which could not respond in the test circuit via the switching arm c2 as a result of the called subscriber being busy, is thus excited via the winding 111 in position 7i of the code number selector KW. The relay P4 operates its contacts 36P4 and 3'7P4, and the calling subscriber is thus connected to the last-named subscriber despite the fact that the subscriber N1 is busy. Forced disconnection If a subscriber finds the desired subscriber busy, the forced "disconnection" can also be "brought about" for subscribers with the appropriate traffic authorization using the code number K LL '.

Compulsory separation possibility have according to Fig. 7, Table I, the microphone units named fifth to eighth.

The code number for forced disconnection is 72. The code number selector is therefore set to the second contact of the seventh contact row. In this position of the code dialer KTV, switch arm c of the code dialer KW in the seventh row of contacts, contact 96u8, switch arm g of the code dialer Kg ' on contact 2 of the seventh row of contacts. Line is switched on, switching arm c .. of the I_eitungswälrlers LW directly earth to the T-relay of the participant found occupied. As a result, the test relay of the call seeker or line selector used by the busy subscriber is short-circuited, so that this relay drops out and releases the connection devices used by the subscriber. The switching operations are similar to those described for establishing a connection to a dictation station for a longer dictation, where the caller is triggered by short-circuiting the P relay of the caller used by the calling subscriber by closing contact 146 in FIG AS is brought about. If the connection path of the subscriber N1 found busy coincides, the relay P1 can respond as shown in FIG. T, and the calling subscriber is connected to the subscriber found as busy N1 , the calling subscriber can dial the code number 73 in connection with a people search system, which switches on the signals assigned to the desired subscriber at various points in the company (lamp panel o, the like.) The calling subscriber has to this Purpose after pressing the key to dial the code number; 3. "Zach after the setting of the code dialer KW according to the code number is the calling subscriber via lines 84, 85 in Fig. R, switching arm a and b of the code dialer in the seventh contact row, contact 107 u "102 lt" switching arms e and f of the code selector KW in position 3 of the contact row 7 with the person search hanle.:ge PSA connected. The activation of the signals at the various points in the company takes place in a known manner. The desired subscriber can then reach the person search system from one of the nearest devices via a certain number of the house system, from which he is then connected to the calling subscriber via the switching arms e and f of the code dialer KW. Acknowledgment If a calling subscriber finds the desired subscriber busy, but neither wants to disconnect the existing connection of the called subscriber nor to connect to the existing connection, the calling subscriber can set the code dial KW to a specific contact, whereby ° the one established by the calling subscriber The connection path remains and when the desired subscriber becomes free, the calling subscriber is called.

The code number for this response is 81. The calling subscriber, who has set up the connection via call seeker AS and line selector LW in FIG. This closes a holding circuit for relay V via earth, switching arm c of the code dialer in contact row 8, contact 96uss, switching arm g of code dialer KW to contact i of the eighth contact row, thermal relay Th, contact 150x, relay L ', battery, earth. So if the calling subscriber picks up his receiver, the relay <-11 and A. is de-energized, but the trigger relay> r 'is kept energized via the aforementioned circuit regardless of the contact 2o a1.

If the subscriber N1 called by the calling subscriber ends his conversation, his connection path is triggered, so that a circuit for the relay P4 can then be established. The relay P4 responds, and Zier subscriber N1 is called in the manner described. The ringing current flows not only via the contacts 43l and 441, contacts 36p4, 37p4 to the subscriber N "but also via the lines 152 and 153, capacitors C1 and C .., switching arms e and f of the code dialer KW in position i of the eighth Contact row, contacts lo711c, io2ua, switching arm a and b of the code dialer in the eighth contact row, lines 84, 85, contacts 82 x, 83 x, contacts 17 p and 18 p via switching arms a1 and b1 of the caller _AS to the calling subscriber who has hung up his receiver after dialing the code number 81. If the called subscriber NI and the calling subscriber also answer, then both intercom stations are connected to one another via the call finder AS and the code dialer KW in position 81. The calling subscriber can now, as already described, Briefly press the button to trigger the code dialer KW . A connection between the calling subscriber N and the subscriber Ni now exists via the call finder AS un d Line selector LW.

Further transmitter services via the code selector 1 (W As can be seen from table II in FIG Connection traffic via cross-connection lines OL according to FIG.: 2 is described.

Furthermore, it can be seen from Table II that alarm receiving centers can be reached by dialing the code oi fire alarm points, o2 remote control points and 03 guard checkpoints can be reached. The appropriate places can be reached directly via the KW code selector, for example, like the arrangement of a dictation station shown in FIG. Exchange connections In Fig. 4 is the code number selector KW with its switching arms a to g of a house unit repeatedly, namely for the setting on the contact rows 4 and 5 by Which once a calling extension subscriber, by dialing the kerin number. l, is connected to a free exchange line, while dialing the code number 5 on the part of a night station this associated with a calling exchange line will.

Incoming traffic is switched through this if there is a main office. If an exchange call comes in, the desired subscriber is reached via the exchange line dialer "Alt". In parallel with the exchange line, another dialer BLL 'is provided, via which inquiry subscribers from an extension connected to an exchange line or from the main office can be reached for the purpose of transfer. Incoming traffic If an exchange call is received via the exchange line AL in FIG. 4, the relay AR is excited by the ringing current coming from the office, which is itself via earth, contact 155ar, contact 156AS of the interrogation switch AS, contact 15; did, 158 i ^ b, winding II of relay AR, battery, earth holds. Relay AR opens contact 169 ar, so that the trunk line .IL via the code dialer hit 'is prevented. Relay _1R also closes contact i59ar, which the Call lamp-4L lights up. Relay Ar switches the busy lamp BL via earth, contacts i64 crr, 165K; 0, busy lamp BL, battery, earth. The officer then puts her on en interrogation switch AS uni, which interrupts the holding circuit for the relay Ar at contact i56AS and the intercom of the main unit HS by opening contacts 16oAS and 16i: IS and closing contacts 162 AS, 163 _ 1.S with the calling exchange line AL is connected. By moving the interrogation switch, a relay DR via contact 166: 1S is placed between the wires of the exchange line .IL, so that this relay DR is excited via the wires of the exchange line to battery in the office and is independent of your contact of the inquiry switch 166_4S via contact 167 dr holds. The relay DR closes its contact 165 dr so that the busy lamp BL is kept switched on independently of contact 164ar, which is de-energized when the relay AR drops out when the contact 156A5 of the interrogation switch AS is opened. Through the relay DR, namely by opening contact 1; o dr, an occupancy of the exchange line AL , which was previously impossible by opening the contact i89ar, is still prevented. was. The main station HS accepts the request of the calling subscriber and then puts its query switch AS back into the rest position. On the other hand, the main unit HS actuates the selection button WT in direction H, which closes the following circuit for the relay TVA: earth, contact 171 WT, impulse contact 172 ik, contact 173 WT, relay WA, winding 1, battery, earth. By moving the selector key WT the contact 202 W7 'is closed, so that the relay DR independently of its holding circuit via a, 10 -wire of the AnitsleitungAL, relay DR, contacts 167 dr, 203 vat, 204vb, 2057'r, b "- Wire of the exchange line -I_ now via a10 wire of the exchange line AL, relay DR, contact 202 WT of the selection key WT, blö wire of the exchange line AL is kept energized. The relay WA is thus brought under the influence of the rush contact 172 ik. This rush contact 172 ik can be activated by a number switch. By energizing the relay WA , contact 174 u'a is opened and the contact 175 wa is closed, so that the relay VA is energized via earth, contact 175 wa, relay VA, battery, earth. Relay VA takes over the blocking of the trunk line AL against occupancy in the outgoing direction by opening the contact 2o6va. The relay VA opens the contact 176va and closes the contact 177va and thus prepares a circuit for the lifting magnet HAW of the Amtswä hlers AW.

By opening the contacts i78 WT, 179 [VT and closing the contacts i 8o WI 'and 181 WT, the speech set of the main station HS is connected to your exchange dialer AW.

If the main station now activates its impulse transmitter to set the exchange dialer ALV to the subscriber desired by the exchange, the relay LVA is caused to drop out by the impulse contact 172 ik in accordance with the interruption at the impulse contact 1721'k, and the lifting magnet HALV of the exchange dialer AW receives it in the following way the current impulses: earth, contacts 171. wa, 177 va, 178 xa; Head contact 183 kaw of the exchange dialer AW, delay relay U.4, lifting magnet HAW, battery, earth. The solenoid therefore loves the = lint selector ALV in the corresponding contact row. After the first current surge, contact 183 kaz0 is opened and contact 184kazey is closed. Since the relay Li A is also excited with the first current surge, the contact 185 zia is also opened and the contact i86ira is closed. After the first lifting step, the lifting magnet HAW receives further current impulses via earth, contacts i 74 ze'a, 177 va, i 82 xa, head contact 184kazu, contact 186ua, relay U <d, lifting magnet HAW, battery, earth. After the end of the first series of impulses, the relay UA drops out, so that contact i86ua is opened and contact 185 is closed. The relay UA controls the surge circuit from the lifting magnet HAW to the rotary magnet DAW.

The next impulse series, which acts on the relay WA through the impulse contact 172ik, is via earth, contacts 174wa, 177 va, i82 xa, head contact 184 kazu, contact 185 2ca, shaft contact 187 ze ', relay U.AI, rotary magnet DAW, battery , Transfer earth to the rotary magnet DAW. The relay UA ,, is excited by the first current impulse for the rotary movement, which closes its contact 188 tcal. After the first turning step, contact 187w is also opened and contact i89zu is closed.

The further current surges for the rotary magnet DAW run independently from shaft contact 187 to via contact i 88 ual. After the end of the second series of impulses the relay UR, drops out; opens the current impulse for the rotary magnet at contact 188, among other things DAW and prepares the circuit for the chime relay by closing the igozcal contact LAW before.

It is assumed that the calling exchange subscriber wants subscriber N of group II shown in FIG. The exchange dialer AW in FIG. 4 is then set to the lines 4q., 14.5 and 147. If the subscriber N- in Fig. I is free, the following test circuit for the exchange dialer AW is established: earth, contact igi va, 192 anal, winding I and II of the relay PAW, switching arm c5 of the exchange dialer AW on line i47 via line 147 to Relay T of subscriber N in Fig. I, battery, earth. The T-relay in Fig. I responds and stops it at the contacts and 2 t the call circuit for the subscriber N.

In the test circuit of the exchange dialer AW also responds to the PAW relay, which by closing the contact 193 paw short-circuits the winding I of the PAW relay and thus blocks the called subscriber in a known manner against further occupancy. The relay PAW also closes the contacts 194 paw and 195 paw, so that the trunk line AL is switched through to these contacts. The PAW relay closes the following circuit for the LAW bell relay: earth, slow breaker CLOSE, LAW relay, contacts 196a1, 197 paw, 19oual, shaft contact i89 w, relay U., 41, rotary magnet DAW, battery, earth. In the aforementioned circuit only the relay LAW is influenced, which opens the contacts Zoo laze, and 2o i laz "according to the influence of the slow breaker LU" and closes the contacts 1981aw and i99law and thus at certain "control intervals the one supplied by the rang current machine RaI Ringing current is switched on for the desired subscriber.

If the called subscriber 1N reports in Fig. I, then in the pause in which the contacts 2oolaze, and toi lazt, are closed, the relay AL and BL via earth, battery, winding I of the differential relay XA, relay AL, contacts 2001zu, 194 paEe "switching arm a ;, of the public exchange dialer Au ', line 144 via the loop, of subscriber N in FIG. I, line 14.5, switching arm b; of the public exchange dialer ALV in FIG lai @ "Relay BL, winding II of relay 1A, earth energized. In the aforementioned circuit, the differential relay XA does not respond. When relay AL is triggered, the circuit of the ringing relay LAW at contact 196al is interrupted. Relay AL also creates a bridge across a10 -Ader of the trunk line AL, contact 2o8 k54, choke D, contact 2o9 al, blö core of the trunk line AL switched on. The AL relay opens the contact 215 al and the contact 216al closes, so that the relay TRAT is connected to earth, contact 216a .1, relay TRAT, battery, earth responds VAAT opens contact 203 vat and thus interrupts the holding circuit for the relay DR located between the exchange line. The relay DR does not drop out, however, because the officer has not yet returned the selector switch WT to the rest position and thus the relay DR continues to over the contact 2o2 WT of the dial button is kept energized.

The relay TRAT closes the contact 2o7 vat, which maintains the circuit of the busy lamp BL independently of the contact 168 dr.

The officer receives the report of the participant in any desired manner and then puts the selector switch WT back into the rest position. If contact 173% VT is also opened, relay WA remains energized via earth, contacts 217vat, 2i8cat, relay LVA, winding I, battery, earth. By returning the switch WT to the rest position, the circuit of the relay DR is interrupted at contact 2o2 WT of the dial button, so that the relay DR returns its contacts to the rest position. The test circuit is maintained by relay VAT independently of contact 219 wa via contact i gi vat. By opening contacts i8o TVT and 181 WT and closing contacts 178 PVT un: 1 1; 91'1 ', the calling party subscriber is now connected to the desired party subscriber 1'.

When the call is over and the extension unit nelliner V hangs up the receiver. so the relays AL and DL are de-energized. Relay AL opens the circuit for relay UAT at contact 216a1, so that relay 1 _.`1T drops out. The relay l'AT opens the holding circuit for the relay li'A on contact 2r via earth, contact 21 7 vat, 2 i 8 cat, relay lUA, battery, earth; z'at. Relay II-A drops out, opens the circuit for relay 1 '.- 1 at contact 173 7,.' A. The relay 1- <i also drops out after a while and closes the following circuit for the A.islösiagneten .11A of the AGG dialer: l earth, contacts t; d. ZtYa, 1 7 6 Zlcl-, head contact 22 <@ i ° Erz @. of the public office dialer Af ', tripping magnet .11A, battery, earth. The tripping device .11a1 is kept energized until the public office dialer ATT- has reached the rest position in which the contact 220 chews, is opened again Relays UAT and II'A also interrupt the test circuit of the exchange line dialer ATV at contacts 191 vat or 209wa. Relay PAW drops. When relay l'AT drops, the circuit of the busy lamp -, - BL at contact 207 vat All switching means that have been used are now in the rest position again.

If the subscriber to whom the officer has set the exchange dialer Alf 'is busy, the PAW relay of the exchange dialer <4LL' does not respond. The attendant is however with her speech set HS via the capacitors C; and, 0s, switching arms a5 and b5 connected to the called busy subscriber. The occupied subscriber receives a quiet ticker in a known manner, by which he is made aware of the connection of the officer. The subscriber can now hang up his receiver and release the connection through which he was busy in the manner described. As soon as the test circuit of the call seeker is disconnected for the subscriber, the test relay PAld 'of the exchange dialer AU' can respond. The other switching operations are then the same as those described when the desired participant was free.

But if the extension called by the main station H, 5 'is conducting an important conversation and therefore does not want to interrupt it, the officer puts the selector switch IVT back into the rest position. As a result, the circuit for the relay DR_ is not interrupted by opening the contact 202 LI'T of the dial button, since the relay DR via (110-wire of the exchange line .1l_, I-elais DR, contacts 16; dr, 203, -at, 2 () 4, 'b, 2 () 5'1'r, b ", wire of the trunk line AL is kept energized. The following holding circuit now exists for relay yf'A: Earth, contacts .2107'J-, 2 r 1 HZ ', 212 crai, 213 dr, contact 214UIT of the selector button 11 "T, relay l1"<1 battery, earth.

The officer again flips the query switch AS and is thus again connected to your calling subscriber via the contacts 162 AS and 1C23 AS.

The officer informs the person calling you that he has the The desired participant can not reach in the moment, this is an important one Conversation leads.

The calling party can zero in on either making the \ 'erl> iii <Iiiiig waive to call up again later, on the other hand can he also on the release of the desired subscriber «types or the called The exchange subscriber wants to speak to another extension subscriber here.

If the calling subscriber waives the call, the officer puts her query switch AS back into the rest position and presses the disconnect button Tr, which opens the holding circuit for the relay ihA at contact 21oTr. Relay WA drops out and, in the manner described, returns the switching means that have been used to the rest position. When the disconnect button Tr is pressed, the contact 2o3Tr is also opened, so that the holding circuit for the relay DR is no longer ordered between the wires of the exchange line.

However, if the calling office participant wishes to wait for the called participant to become available, the officer simply puts the interrogation switch in the rest position. Via earth, main circuit breaker LU, relay LAW, contacts 196al, 223 paw, 221 wa, battery, earth is energized <las ring relay LW by the slow breaker LM at certain time intervals, which is done by closing contact 2221azv in the same rhythm via earth, contacts 2221aw , Lamp RL, battery, earth the lamp RL switches on.

If the extension subscriber ends his conversation after a certain time by hanging up the receiver, the PAW relay of the exchange dialer AW can respond. The relay PAIII 'interrupts the circuit for the ringer relay LAW at contact 223 paw. The subscriber is still called by the ringing relay LAW, since the relay LAW via earth, slow interrupter LU, relay LAUF, contacts r96al, 197 paw, rgoual, shaft contact i89w, relay UAl, rotary solenoid DAW, battery, earth so is pressed for a long time until the desired subscriber answers, whereby the relay AL is activated during the call pause and the circuit for the relay LAW at contact i96al is interrupted. The other switching processes that are caused by the subscriber becoming free and reporting are the same as those already described when establishing a connection to a free subscriber.

If, on the other hand, the calling subscriber wants a connection to another extension when the extension he wants first is busy, the officer simply presses the HT button and thereby causes the WA relay to drop out by opening the contact 211 HT. When the relay IYA drops out, the devices that are in use are triggered in the manner described, but without the relay DR dropping out. After returning the office voter to the rest position, the officer establishes the connection to the desired second extension participant in the manner already described. Outgoing exchange connection As can be seen from Fig. 7, the code number for outgoing exchange connections is 4. Only the microphone units named untex up to 8 are authorized for these connections. If an extension subscriber who is authorized to make connections to the exchange wants to establish a connection with the exchange, e.g. B. a subscriber N connected in group II, the setting of the call seeker AS in FIG. I to the calling subscriber N is brought about in the manner described. The authorization relay BR is energized. If the calling subscriber hears after the call finder AS has been set to the calling subscriber, the telephone number given in a known manner, the subscriber selects the code number after pressing the key and thus lifts the code number selector KLh into the fourth row of contacts. The individual switching operations for setting the KW code selector have already been described.

The reference selector KW reaches the fourth row of contacts, so the following circuit for the rotary magnet DKZ is the Root selector KW closed. Earth RelaisunterbrecherRUl in Fig ¢, Kontakte224ckr, 225 brl, 226 pkz, 227u_ "switching arm d of the reference selector KW in the fourth row of contacts (s Q and i), line 228 in Fig. I, rotary solenoid DKZ, battery, earth. The rotary solenoid DKZ is switched on by the relay interrupter RUl until the code dialer in contact row 4 finds a free exchange line, ie until the following circuit is established via the switching arms c and g of the code dial selector 1 (W in the fourth row of contacts (see Fig. I): earth, winding I and 1I of the relay PKZ, switching arm c in the fourth contact row of the code dial dial KW, Contact 96 aaG, switching arm g of the code dialer to any contact of the fourth contact group, e.g. to the third contact of the fourth contact group, via which the first free exchange line AL is reached, Cont akte i69 ar, Uo dr, 2o6va, 229 z, b, relay CAT, relay CKR, battery, earth. In the aforementioned circuit, the PKZ relay responds first, which at contact 226 pk-- disconnects the circuit for the DKZ rotary magnet. Furthermore, relay PKZ short-circuits its winding I at contact 23o pkz, so that another code dialer cannot check for the third line of the contact row 4 at the moment. The calling subscriber 1 "in Fig. I is now on call searcher AS, contacts 82 x, 83 x, lines 8q., 85 in Fig. I and q., Switching arms a and b of the code dialer KW in the fourth row of contacts, contacts 1071e, and io2up switching arms e and f of the code dialer KW in position 3 of the fourth row of contacts, lines 231 and 23.2 with the exchange line AL . The calling subscriber can act on the relay AL, BL and XA via the aforementioned path. The relays AL and BL are after KW energized adjusted the reference selector on the trunk line aL through relay aL relay VK is shown in Fig energized al 5 via contact 26o the relay aL defines a restriction D in Figure 4 between the wires:.... the exchange line aL through the contacts 2o8 h54, throttle D, contact 2o9 al. Relay AL closes contact 2 1 6 al and thus energizes relay VAT.

The connections of the subscribers corresponding to the connections i.mLeitungswählerLW, exchange dialer AW and dialer BW are identified on the code dialer KWA in FIG.

Is z. B. the subscriber N i / i in Fig. 6 is connected to the third contact of the second contact group of the line selector LW , so is the connection of the subscriber N i / i on the call finder AS with the multiple field of the line selector LW, the exchange dialer AW and the Voter BW connected. The subscriber Ni (i is also marked on the third contact of the second row of contacts of the code dialer KWA. The multiple field of the selector LW, AW, BW and AS is via switching arm b of the call finder AS and line 4 (jo with German number plate contact of the code number: ihlers Kll 'A, (so in the present case Gier is connected to the third contact of the second row of contacts. If the trunk line AL in FIG. The power push.:, which the drive magnets of the code dialer ElVA receive for the purpose of setting on line 4oo, also receive the drive magnets of the exchange dialer Ail-. The code dialer K 1l; I and the exchange dialer All If the exchange dialer Alt- is set to the calling party, both the code number # v.liIerKil- and the code number dialer KIt'A are returned to the idle position.

The subscriber 1 'in Fig. I, who has seized the exchange line AL via the key digit selector K iL "in Fig. 4 and effects the setting of the voters in the office, be the one on the third contact of the second row of contacts of the voters Lll', All ", DU and K 1lFA connected or marked participants.

By the relay PKZ in Fig. 4, which is excited via the switching arm c and g of the code dialer Kin--, a contact 235 pkz is closed in Fig. I, which applies the relay C to the switching arm (1i of the caller AS Connection of the calling subscriber to the contact field of the switching arm (1i of the call seeker. S in Fig. I now leads both to the height step of the code dialer Kll'A in Fig. 5 and to the individual contact of the code dialer KWA, over which the caller is identified.

In the test circuit via the relay PK7_, the relay CKR and the relay CAT are also energized when the code selector KlV in FIG. 4 is set. By opening the contact 224ckr, an influencing of further code number dialers KW until the final setting of the exchange dialer Alf 'on the calling subscriber is prevented. Relay CAT closes a holding circuit for relays CAT and CKR via contacts 343 cat, independently of contacts i69ar, i7odr, 2o6z, a, 2292-b. The contact 236cat in Fig. 5 is opened and the contact 237 cat is closed, so that the lifting magnet HK of the code dialer KWA is actuated by the relay interrupter RU in the following way: earth, relay interrupter RU2, contact 237cat, 238p7, head contact 239ko of the code dialer KItTA, Relay UK, HubinagnetHK, battery, earth.

In the first stroke step the relay UK, is excited, which by opening the contact 24o ukt and closing the contact 24i uki prepares a stroke circuit for the Hubinagnetcn HK, which after opening the head contact 239 ko and closing the head contact 242 ko after the first stroke step the head contact 2: f2 ko; Contact 241 tcki runs. The solenoid IIK is now operated by the relay interrupter R (_ ': until the following circuit is established: earth, battery, relay P7, contact 243 cat, switching arm d7 of the code number counter KWA in the second row of contacts, resistance Wi, line 244 in Fig. 4 and i, switching arm (1i of the caller AS in Fig. I, contact 23j pl "z. Relay C. '. Earth. In the aforementioned circuit only responds in Fig. 5 (read relay,'? To, ( read by opening the contact 238p; the circuit for the 1lubniagneten IIK and (read relay UK, interrupts and by closing <11s contact 245p, the relay breaker RU = switches to the 1) i-eliiliagiieten DK. 1-s now receives the DrehuiagnetDK of the code dial KWA from the relay interrupter RU. Current surges, namely via earth, relay interrupter RU_ contact 237 cat, 245 p7, 246ps, shaft contact 2q.7 ivk of the code selector K TVA, relay UK =, rotary magnet DK, battery, earth. The relay Uh: is during the series of strokes excited and held by closing en of contact 248uk, the circuit for the rotary magnet DK and for (read relay UK, independent of the shaft contact 247zc @ k, which is opened as soon as the code meter KWA makes the first turning step. The code dialer KWA is now switched from contact to contact until the following circuit is established for relay P8: earth, battery, relay P8, contact 249 cat, switching arm la, of the code dialer KWA on contact 3 of the second contact group, line 244 in Fig. 5 and i, switching arm d, of the caller AS in Fig: i, contact 235 pkz, relay C, earth.

During the lifting movement of the code dialer KWA and also during the rotary movement of the code dialer KWA, the relay UK is energized via earth, relay breaker RU2, contact 237 cat, relay UK, battery, earth, which is activated by opening contacts 250 uk, 25 corner and 252 uk an influencing of the switching means via the switching arms a7, b7, c7, e7, f7, and 97 of the code number selector KWA prevents during the series of current impulses.

By means of the relay CAT in FIG. 4, the contact 2i8cat in FIG. 4 is opened and the contact 253 cat is closed, so that relay WA is energized via earth, contacts 255dk, 254hk, 253 cat, relay WA, battery, earth. The current surges now received by the solenoid HK in Fig. 5 also act on the relay WA by opening the contact 254hk in Fig. 4, so that the setting of the solenoid HAW of the public exchange dialer AW in Fig. 4 simultaneously with the setting of the Code number selector KWA in Fig. 5 takes place on the row of contacts in which the calling subscriber N is connected. After completion of raising the switching from lifting magnet HAW is carried out in the manner already described in Fig. 4, the Official selector AW to the rotary magnet DAyh, so that the subsequent current pulses, the j receives the rotary magnet DK of the reference selector KWA in Fig., Now by operation of the contact 255 ie in Fig. 4 are transmitted to the rotary magnet DAW of the exchange dialer AVl.

If the code dialer K TVA in FIG. 5 reaches the specific I, # - ontalzt to which the calling subscriber N is connected, the relay P8 responds in FIG. 5 and stops the code dialer KWA by opening the contact 246 p8 . The exchange dialer in FIG. 4 also remains in the position of the calling subscriber N. In Fig. I, the relay C responds, which disconnects the test circuit of the call seeker AS by opening the contact 14c in Fig. I. Relay P drops out, opens contacts i7 p and i8P - and thereby interrupts the circuit for relays A1 and A., so that this triggers the devices of the house unit that are in use, i.e. caller AS and code dialer I (W) As soon as the test circuit of the call seeker AS in FIG. 1 is disconnected, the relay KAW of the exchange line selector AW in FIG Lines 144, 145, trunk dialer A147 in Figure 4 connected to the trunk line.

As mentioned earlier, was through. Relay C in Fig. I the release of the caller AS and the triggering of the code dialer brought about. As soon as the code selector KW leaves the position it has assumed, the relays PKZ, CAT and CKR in FIG. 4 also drop out. The contact 224ckr is closed by relay CKR, so that code dialers can now again be set to a free exchange line through the relay interrupter RU1. In Fig. I, the relay C drops out.

When the relay CAT drops, the contact 253 cat is opened in FIG. 4, but the relay WA remains above ground, contact 217vat, 2i8cat, relay WA, battery, ground. When the relay CAT drops out, the tripping magnet JIK of the code selector KWA in Fig. 5 receives power via the relay interrupter RUz, contacts 236 cat, 25i) uk, head contact 257 ko of the code selector Kl.VA, tripping magnet il7K, battery, earth and carries the switching arms of the Key numbers w5hIers KLVA back to the rest position. The contact 257 ko is then opened. If the relay CAT drops out, the contact 237cat is opened and thus the circuit of the relay UK is interrupted. The relay UK is so delayed that it only returns its contact 256ztk to the rest position when the tripping magnet.JIK has returned the code number, count KTVA to the rest position.

As can be seen from the description above, as soon as the code dialer 1 <W of a house unit is set to an exchange line is, the calling subscriber is visited by the code dial KWA of the trunk line and simultaneously with this search through the code dial KWA of the trunk line the exchange dialer AW thereby set to the calling subscriber N that the power surges for the drive magnets of the KWA code selector, also the drive magnets of the Public Elector AW received.

It should be noted that in the event that the calling subscriber has not yet finished the rush to the exchange and the setting of the exchange dialer AW to the calling subscriber takes place during this time, the rush is not influenced, since then the rush receiving relay AL and BL of the The trunk line AL is influenced by the trunk dialer AW and the triggering of the code dialer KW, via which the relay AL and BL is first influenced for the purpose of rush-off to the trunk, only takes place after setting the trunk dialer AW on the calling subscriber in the manner described.

When the calling subscriber connects to the trunk line AL via the trunk dialer AW, the code dialer KWA has assumed the idle position and can now be used by the calling subscriber N for the purpose of producing any special services. It should be noted that the production of the individual special services are controlled via .the switching arms a "b7, c7, e7, f7 and g7, while, as can be seen from the above description, the calling subscriber is searched for by the code dialer KWA via .die Switching arms d7 and 1a7 takes place.

Table III in Fig. 7 shows the exemplary special services, through the Code number selector KTVA are possible, can be seen.

Table III of Fig. 7 shows that cross connections are achieved by sending the code numbers ii to 13, the time signal by sending the code number 16, inquiry calls in the house without listening to the subscriber station of the public office by dialing the code number 17. The main station is reached by dialing the code number 21, the dictation call point: by dialing the code number 27. Transferring a call from an extension connected to an exchange line to another extension is made possible by dialing the code number 52. Dialing the code number 53 triggers the exchange dialer AW, 54 triggers the code number dialer K fVA, 55 flickers to the office, 5o flickers to the main office. By setting the code dialer KWA to a contact of the eighth group, an inquiry can be made via a second exchange line. The individual switching processes are as follows: Cross connections. If a subscriber V conducts a conversation with a subscriber via the trunk dialer Abt 'and trunk AL in Fig. 4 and if subscriber N wants to speak to a subscriber who can be reached via cross-connection lines during this connection, subscriber N in Fig. I presses his key T, as a result of which the differential relay XA on the exchange line AL is energized and relay BL is made to drop out. The relay XA opens the contact 182 xa and prevents an influence of the driving magnets HAW and DAW the Official selector AW by the subsequent current pulses for setting the reference selector KWA in Fig. 5. relay XA of the contact 258 is further by closing xa in Fig.5 a Impulse circuit prepared for the Hubinagiieten HK. Since the bridge relay AL in Fig. Q. is excited, the contact 259al is open and the contact 26oal closed in Fig. 5, so that the relay VK is excited via earth, contact 26oal, relay VK, battery, earth and thus the contact 261 vk is also closed. Relay XA stays above earth, contact 262 sit.k, 263 xa, winding III of relay I'A, battery, earth, regardless of the button being pressed. When the relay XA is energized and the relay ßL drops out when the subscriber N presses the button, the following circuit is established for the relay AU3: earth, contact 27ovat, resistance W, o, winding I of relay A U3, contact 271 xa, 272 arap 273 1l, 214 al, 275 xa, tripping magnet MK, battery, earth. In the aforementioned circuit, only the relay AUs responds. The tripping magnet MK is not actuated. The relay AU: " closes the contact 276au3, so that the following circuit is established for the relays AU3 and AU : earth, contact 27ovat, resistance Wlo, winding I of the relay AU" contact 276au3, winding 1I of the relay AU " battery, earth .

Since the high-resistance winding II of the relay AU is now parallel to the tripping magnet: 17K, the relay AU is not actuated. If the participant releases the key, the relay BL in Fig. Q is again. excited. Relay BL opens contact 273 bl and closes contact 277 bl. This prepares a circuit for the release magnet MK. The relay AU can now respond. Relay AU, opens contact 272 au, and closes contact 278 au ,. Contact 279 au, is also closed.

Relay VAT is energized by relay AL in FIG. Q via contact 216al. The relay hat opens in Fig. 5 the contact 265 vat and closes the contact 26q.vat. This (las relay VK, energized, which.

If the calling subscriber N now sends the first series of impulses of the code number for cross-connections, which is the code number i in the present case, the one current surge .the lifting magnet HK in FIG. 5 through the relay AL in FIG Current impulse of the calling point receives, influenced via the following path: earth, contact 259 al, 261 vk, 258 xa, head contact 239 ko des Kennzifferwähl, ürs KWA, relay UK " lifting magnet HKdes code dialer KW, battery, earth.

With the first current impulse the relay UK, is also excited, which prepares a circuit for the lifting magnet HK by opening the contact 2q.0 ukl and closing the contact 241 ukl, which comes into question if a higher code number is sent out, since opening the head contact 239ko and closing the head contact 242 ko after the first lifting step of the selector KWA fier current surge circuit for the lifting magnet HK is interrupted. For any subsequent current surges, the current surge circuit then runs via the head contact 2.12 ko and the contact 241 ukl.

Since in the present case only a current surge has been sent, the relay UK drops out after a short time due to its delay and prepares the circuit for the rotary magnet DK by closing the contact 240 ukl. The following series of impulses is transmitted: through relay AL in Fig.: 4 by actuating contact 259 al in Fig. 5 to the rotary magnet DK of the code dial selector KWA in the following way: earth, contact 259a1, 26i z, lz, 258 xa, head contact 24.2 Izo, contact 24.o ttki, Well, enleontalet 247 7c, k des l # ', key number selector KWA, relay UK "rotary magnet DK, battery, earth. By: the first current impulse the relay U1 (2, which controls the impulse circuit for the rotary magnet DK irrespective of the the first step of rotating, opening shaft contact 2477V1, maintains via contact 248 TaK2. It should be noted that the relay VK is not made to fall during the current pulses through the AZ relay, -da this formed i as a delay relay, st.

The same applies to the VAT relay in Fig. 4, that too by opening : of the contact 216al during the current surges its contacts do not move into the rest position returns.

By setting the code dial s KWA to contact ii to 13, the setting of a call seeker ASO of a cross-connection line is brought about in the same way as described when setting the code dial KW to ii to 15 (FIG. 2). The call seeker ASO, which is stimulated by: the code dialer KWA, then sets itself on the lines 266 and 267 so that the calling subscriber can now use the lines 144, 145 in FIGS. I and 4, switching arms a5 and b5 of the exchange dialer AW, lines 266 and 267 in FIGS. 4 and 5 via a call finder (not shown) for cross connections is connected to a cross connection line. It should be noted that when the code dialer KW A is set , the code numbers for Ouerverbindungsleitwngen via the switching arm g, the code number selector KWA, a relay RFA is energized, which in Fi: g. 4 opens the contacts 268rfa and 26grfa so that the exchange subscriber cannot take part in the call over the interconnection line. This is necessary in view of the fact that subscribers who are not authorized to make connections with the exchange can also be reached via cross-connection lines. If the subscriber N has ended the conversation via the Ower connecting line, he releases the code dialer and thus the established connection via the call finder of the Ouer connecting line in the following manner: The subscriber N presses the button again and brings: thereby the relay BL in Fig. 4 for waste. This creates the following circuit for winding II of relay AU, in Fig. 5: Earth, contact 27o vat, resistance TV ", winding I never relay AU, winding II of relay AU3, contacts 278 att4, 273 bl, 274al, 257 ko of the code selector KWA, release magnet IIK, battery, earth. In the aforementioned circuit, the winding II of the relay AU is connected in the opposite direction to the winding I of the relay AU, so that relay AU returns its contacts to the rest position and thus: the release magnet above earth , Contact 28o att3, 279 au, 277b1, 274al, 275 xa or head contact 257 ho, tripping magnet IJIK, battery, earth is actuated and in a known manner: the code selector K TVA is returned to the rest position the circuit for winding II of relay A U4 at contact 276 aat3 is interrupted. Relay UA, however, remains due to its delay until the release magnet IVIK has returned code selector KW A to the idle state the contacts of the relay AU are switched back to the rest position. When the trigger magnet IYIK responds, the holding circuit for relay XA at contact 262 mk is also opened, so that relay XA has also returned its contacts to the rest position when the code dialer is triggered; only then are the switching means of the code dialer KW back in the rest position, and the following can be set: the code dialer KWA for a further connection option.

If switching back to the exchange line is no longer necessary, the calling subscriber N in FIG. I can also trigger the connection devices by hanging up the receiver. Here, as already described, the relay AL falls into Fing. 4 from. Relay AL opens the circuit for relay VAT at contact 216al. Relay VAT opens contact 264vat in FIG. 5 and closes contact 265 vat. This opens the circuit of relay V1 (;,; however, relay V1 (, is a delay relay which only returns its contacts to the rest position after a short time, so that in the meantime the tripping magnet IITK still receives current via earth, contact 265 vat, 266 vk_, head contact 257 k o, trigger magnet MR, battery, earth. The trigger: ernagnet il.IK now returns the code number selector KR7A to the rest position in the manner described.

The triggering of the exchange facilities according to F: i: g. 4 then takes place in the way described.

Inquiries in the house without eavesdropping As can be seen from FIG. 7, an inquiry in the house is made possible by dialing the code number 17. The setting of the code dialer K [, VA is brought about in the manner described. The code dialer KWA v. Initiates the setting of a call seeker. 4SR. On the lines 266, 267 in Fig. 5 in the same way as the code dialer, KW in Fig. 2 on the lines 8 [, 85 when dialing the code number 17 with an existing house call.

The calling party 11 'is then connected via the lines t4..1, 145 in FIG. T and .I, exchange dialer AW, lines 266, 267 in FIGS. which lies on the inquiry line RL through which reaches the connecting means for adjustment to the back extension "soils. call a dictate station` wishes during an existing external call between the subscriber N in Fig. r and the trunk line AL in Fig. 4 j of the participants, - to give a short dictation to a typist, the subscriber V reaches the supervision of the typing room by N dialing the code number 27. The code number selector KTVA in Fig. 5 is set to the contact 27. In this case, the call to the supervisor of the typing room is made in the same way as previously written for Fig. 3. The calling subscriber is then via lines 144, 145, exchange dialer AW, lines 266, 267 in Fig. q and 5 via the Sch The arm of the code dialer I (IFA in position 27 is connected to a handle, into which the supervisor of the writing room: plugs the plug of a free writing aid, which then receives the dictation. The activation of the code dialer KWA takes place in: the manner described. Unilegen an existing exchange connection: to another NT extension subscriber If there is a connection between subscriber #V in Fig. I and the exchange line AL in Fig. 4 via: the exchange dialer AW, after pressing the 7 'button on the intercom and thus energizing the Relay XA and dropout of relay BL in F.ig. .l set by sending the code number 52 of the code number selection LerKll'.1 in Fig. 5 to the second contact of the fifth contact grater. In this case, the calling subscriber is on the lines 266, 267, switching arms a7, b7, e; and f, of the code number selector I (6VA connected to a relay B @, which receives the subsequent current impulses sent by the subscriber 1 'and transmits them to the drive magnets HBW and DBW of the selector BW in Fig. 4. The selector BIf' is on the desired extension subscriber = set.

It is now the possibility that the calling party N holds only a query to a subscriber via the selector BW and after completion of the inquiry releases the connection with breath extension subscriber via the selector BW.

However, a subscriber who is to be involved in the exchange call can also be called via the voter BW , ie a conference connection is to be established between a subscriber who is connected to the exchange line AL and a "-eitergin extension subscriber who via the voter BW of the trunk line AL is reached. After the conference call has ended, the call station reached via the selector BW can be switched off again.

However, the call station called in the inquiry or the call station connected to a conference call can take over the exchange call via the selector BW and remove the first call station from the exchange connection. On the other hand, the subscriber reached via the voter BW is able to forcibly disconnect the extension subscriber who was first connected to the exchange line from the exchange line.

The individual switching operations are the following:. If a trunk connection between a subscriber N in Fig z about the Leiturgen 144, 145, Official selector AW with the trunk line AL and the subscriber desires the preparation of a consultation call or conference call with the handover possibility with a through selector BLV the A Nitsleitung attainable subscriber, the subscriber N presses the button, whereby the relay XA is energized and the relay BL is de-energized. This provides the drive systems HK and DK of the code number #selection KLVA for receiving the series of current impulses. The code dialer is set in the manner already described. With the code number 52, the code number selector reaches the second contact of contact row 5. In this case there is a relay RFA, battery via earth, switching arm c, of code number selector KWA in contact row 5, contact 252 trkz, switching arm g, in position 2 of the fifth contact row , Earth a circuit for the relay RFA. The relay RFA opens the contacts 26Srfa and 269rfa in Fig. 4 and thus switches off the subscriber from the office dialer AW. Via lines 266 and 267 in Fig. 4 and 5, switching arm a7, b7 of the code dialer KWA in the fifth row of contacts, contacts 25o iik and 25z ack, switching arms e7 and f7 of the code dialer KWA to .the second contact of the fifth contact group, contacts28izus and282ws , of the switch W, S ', winding I and II of the relay B2, the subscriber N can influence the relay B2 by actuating the numeral switch. Relay B2 is energized after setting the code selector KWA, opens contact 283b2 in FIG. 4 and closes contact 284b2, so that relay VB is energized via earth, contact 284b2, relay VB, battery, earth. The relay VB opens the contact 285 z, b in Fig. 5 and closes the contact 286vb, so that the relay VK, via earth, KontalZt 286 vb, relay VK "battery, earth is excited. Relay VK, closes the contact z87vk, the subscriber 4 is opened and the contact 288vb closed now sends the purpose of setting the selector BW of Arntslcitüng on and thus prepares a circuit for the tripping magnet 111K of the reference selector KWA also the contact 289 is vb in FIG through activation of the relay VB.... The first series of current impulses, consisting at most of five current impulses, acts on the lifting magnet HBW in finger q. via relay B2 in Fig. 5. The circuit for: the lifting magnet HBW runs over earth, Contacts 283 b2, 288 vb, 290 xb, head contact 29i k0 of the selector BW Relay UH, lifting magnetHBW, battery, earth. The relay (TH, which opens its contact 292 uh and contacts 293 Ul z closes, so that after the first lifting step of the selector, through which the contact 291 ko is opened and the contact 294 ko is closed, now the circuit for the lifting magnet HBW via earth, contacts 283b2, 288 vb, 29o xb, head contact 29q , ko, the selector BW, contact 293 tch, relay UH, lifting magnet HBW, battery, earth runs. After the first series of current impulses has ended, through which the selector is lifted into a certain series of contacts, the relay UH drops out, so that a switchover from the lifting magnet HBW to the rotary magnet DBYT 'takes place by opening the contact 293 ula and closing the contact 292 uh.

The next series of impulses acts on the rotary magnet DBW in the following way: Earth, contacts 283 b2, 288 vb, head contact 294 ko, contact 292 uh, shaft contact? 95 w'b of selector BW, relay UD, rotary magnet DBW of the selector BW, contact 330vb, decade contact dek in position o to 5, battery, earth. The relay UD is excited by the first current surge and closes the contact a96zcd, so that the circuit for the rotary magnet after the first turning step runs independently of the contact 295zv1 that opens during the first turning step via the contact 296zcd. The shaft contact 297 ab is closed with the first turning step of the selector.

If the subscriber to whom the selector BTT 'has been set is free, the following circuit is established for the test relay PBW of selector B11': Earth, contacts 298 vb or 299 b2, contact 3oo zid, winding I and II of the relay PBTI ', switching arm c, of the selector B11' to the subscriber relay T of the called subscriber to battery, earth. In the aforementioned circuit, the relay PBTT7 responds and blocks the called subscriber in a known manner by short-circuiting the winding I of the relay PBTI 'at the contact 301 pbzc ,. The relay PBTT 'switches the wires of the @ Vählers BW through to the contacts 302 pbzv and 303 pbw. Furthermore, by closing the contact 304pbzc, the following circuit for the ringing relay LBTT is closed: earth, slow breaker LU "relay LBTT", contacts 3o5 atz ", 304pbzc !, 3o6iid, @@ - ellenl; onta.lct 297 zt'b, relay Z 'D "rotary magnet DBTV, contact,; 35 vai, battery, earth. In the abovementioned circuit only relay LBTV is affected by the long--samunterbrecher LU1 and on by opening the contacts 307lbzez and 308lbw and closing the contacts 309lba and 3iolbu that RufstrommaschineR11z to the speech core, so that the ler via the currency BTT 'reached Subscriber according to the actuation of the relay LBTi 'by the Lan nsamuiit.rbrecher Lt', is called. If the called subscriber reports during the pause in which the contacts 307lbzc and 308lbw are closed, the following circuit for the relays ABTl 'and RBW is closed: Earth, battery, winding I of the differential relay XB, relay ABTT', contacts 308lbw . 302 pbze, switch arm a, of the selector BW in the position of the called subscriber over the loop of the subscriber, switch arm b, of the selector BW, Kontal #: te 303 pbze ', 307lbzc !, relay BBTT', winding II of relay XB, earth . In the aforementioned circuit, only the relays ABW and BBW respond, while the differential relay does not operate its contacts. Contact 3i i down is closed by relay ABW, so that relay VB is kept energized via ground, contact 3 ii down, relay VB, battery, ground independently of contact 28.I b2. Since relay VB has also closed the contacts 312vb and 3 i 3 vb, the calling subscriber is now 1 "via the exchange dialer AW, lines 314, 3r5, contacts 3137" b and 31 -, - "b, selector Bi I- with the Connected participants reached via the selector BIT. When the relay ABIT 'responds when the participant reports, the circuit of the ringing relay LBW at contact 305ab7 "is opened. In order to trigger the KITA code dialer, the calling subscriber now briefly presses his "fast" again. So that the relay BL drops out and the code dialer KTVA is triggered in the manner described of relay B .; interrupted in Fig. Relay B., although opening contact 284v., and activates contact = 83 bz, triggering of the selector bit 'does not take place, however d: s participant energized relay @ = 1BIT 'üi-) er contact 311 from-z "energized is held.

The 'Peilnehmer ülx> r deal AU dialer' is now able to trigger the dialer Bil 'after the key has been pressed by dialing the code number 53 after the conversation with (lein participant who has been reached via the voter bit' After pressing the key and sending the code numbers 53, the code number selector KTVA in Fig. 5 is set to the third contact of the fifth contact group, so that the following circuit for the release magnet 11BII of the selector BTh in Fig. 4 comes about: earth, switching arm c, of the code dialer K TVA in Fig. 5, contact 2521ik, switching arenas g7 in position 3 of contact group 5, line 329 in Fig. 5, line 332 in Fig. 4, KOntalit 335-1-a, Head contact 316kbzci of the code selector BI-i ', tripping magnet JIBIT', battery, earth. The tripping magnet MBlf 'is energized and returns Gien selector BIV to the rest position. After the selector Bll' has been triggered, the code is displayed by pressing the Earth button and such released with the fall of the relay BL in the manner described.

If, however, the subscriber reached via the dialer Bih sets, the calling subscriber receives the busy signal in a known manner, and the caller can trigger the code number K TVA by pressing the earth key. When the code dialer K II'A is triggered, the relay B .. is also de-energized in FIG. 5. The relay B. = opens in Fig. 4 the contact 28 b. and closes the contact 383 b- As a result, the relay VB is de-energized once, which returns its contacts to the rest position, so that the following circuit is now established for the release magnet 1-iBW of the selector BW : Earth, contacts 283 b2, 289vb, head contact 316kbw of the selector BIh, tripping magnet MBW, battery, earth. By operating the release magnet AIBTV, the selector BW is returned to the rest position. This ensures that, as a result of the triggering of the code dialer KI-VA and thus also the fall of the relay RFA, the line AL is switched through again to the contacts 268 rf a and 2 ("9 rf d, and the subscriber reached via the exchange line AL is connected to your calling subscriber 11 'via the Amtsw' ililui AW.

If the subscriber reached via the dialer bit 'is free and the subscriber reached via the selector AW returns the KITA code dialer to the rest position, the subscriber reached via the dialer BIT' is also involved in your external call via the exchange line A. So there is now a conference connection between the participant via the voter AW, the participant via BW and the participant reached via the exchange line AL .

If the subscriber reached via the exchange dialer BIh is to continue the exchange call alone, the subscriber connected via the exchange dialer Ail ' can inform the subscriber reached via the selector BW that he should take over the conversation with the exchange line. The transfer of the office connection over the office line AL to the subscriber reached via the voter BW can now be brought about by the fact that the subscriber reached via the office selector All 'hangs up his receiver and thereby brings the feeder relays AL and BL to waste. The relay AL opens the circuit for the relay VAT at contact 21 al, so that this returns its contacts to the rest position. Relay VAT opens the holding circuit for (read relay TVA at contact 217 vat, so that relay TVA also returns its contacts to the rest position and thus also interrupts the circuit of relay VA by opening contact 175 zc'a. Relay VA drops after some time so that the tripping magnet via earth, contacts 174zua, 176va, head contact 22o kau, of the exchange dialer A ih, release magnet LIA, battery, earth is energized and returns the exchange dialer AW to the rest position. When relay VAT drops out, contact 264vat 5 opened and the contact 265vat closed. This interrupts the circuit of the relay VK2, but the relay VKQ lasts until ground, contacts 265 vat, 266 v12, head contact 257 ko of the code dialer K TI% A , Tripping magnet 117K, battery, earth the tripping magnet has excited and has returned the code selector KWA to its rest position. Only after this time does relay h172 return its contacts to its rest position Thus a connection between the subscriber reached via the selector BW in FIG. d and the subscriber reached via the exchange line AL. An assignment of the trunk line Al. via the code dialer KW is prevented by opening the contact 229 zlb, while the exchange connection itself is canceled depending on the subscriber reached via the dialer BW by closing the loop to the office via contact 3I7! is maintained.

The subscriber reached via the dialer BTI 'can now also obtain the various special services via the code dialer KIl'A during the existing exchange connection. If the subscriber reached via the dialer BW wishes to pass the call on to a further subscriber, this subscriber sets the code dialer KWA in FIG. 5 to the sixth contact of the fifth group using the code number 56. By this adjustment, the reference selector KWA then the station via the selector BW, the winding II and III in Fig. 5 of the influence in the FIG. 4. provided PVA relay, through which the adjustment of the Official selector AW. The assignment of the code dialer KWA by the subscriber reached via the dialer BW is brought about by pressing the button and thus energizing the relay XB and dropping the relay BIT ' . Relay XB is held once above earth, contact 262 inc, contact 3I8 xb, winding III of relay XB, battery, earth. By relay @XB the circuit for the driving magnets HK and 13K of indicators voter KTI'A is prepared upstream at the contact 319xb. Through the feed bridge relay ABW of the subscriber reached via the selector BW , the relay VK is energized by opening the contact 32o a.bzu and closing the contact 32I abw, so that the circuit for the drive magnets HK and DK at contact 322vk is also prepared. The current impulses sent by the participant via the selector BW to set the code selector KZYA are picked up by the feed bridge relay ABW in Fig. 4 and transferred to the drive magnets HK and DK in Fig. 5 by actuating the contact 32oabw in, in the same way as by relays AL. And thus actuation of the contact 259 al described. The switching processes for influencing the relays AU3, AU, and triggering device ibTK, which are triggered by pressing a button on the part of the intercom station reached via the selector BW , are exactly the same as when pressing a button by an intercom station reached via the exchange dialer <1W. The circuits of the mentioned switching means are only used instead of the contacts 275-1.-a, 274al, -273b1, 277 bl and 271 Xa., 270 vat by the contacts 223 xb, 22TabzE " 225 bbztI, 226 bbzt" 2 27 1- b and 228vb controlled. After. Setting of the code dialer KIi'A to the specific identification contact is now the one reached via the dialer BTT ': subscriber via the switching arms a3 and b, the selector bit', contacts 302 pbze ', 303pbzt "309LbiV, 307lbz""contacts 336_rb and 370- ib, lines 266 and 267 in Fig. 4. and 5 via the switching arms a ,, b ;, contacts 25o zik2, -25I ick2, switching arms e, and f, of the germ digit selector KITA on the specific identification contact with the windings II and HI of the relay II'a connected. the relay WA responds and causes the assignment of Official selector ATT 'in the manner described. the emitted by the subscriber via the selector BTV surges acting on the relay WA and induce in the manner described, the setting of the Official selector AW , in the present case to the participant desired by the participant reached via the voter BW.

This subscriber reached via the exchange dialer AW can now once can be switched on in a consultation call or in a conference call and in the same way as the participant reached via the voter BW the b; standing Take over the outside call. The transfer of an outside call can often boliebdg be repeated.

The following possibility should be pointed out: If the exercising exchange dialer AU ' has requested a participant to take over via the dialer BW , the participant reached via the exchange dialer AW can only trigger the code dialer KPT' by pressing the button in the manner described. A bring about, so that there is now a conference call for three, for the purpose that the conversation probably only takes place between the subscriber reached via the exchange line AL and the subscriber reached via the voter BW, but the subscriber reached via the exchange dialer AW does Can overhear the conversation. If, on the other hand, the intercom station reached via the dialer BIT 'only wants to conduct the call finitely (only via the subscriber reached via the trunk line, it temporarily presses the i #' rtitaste on its intercom station, and in Fig. 5 energizes the relay XB and causes the relay BBII 'to drop out and then dials the code number; 3. The code number selector K II': 4 in Fig. 3 is set to the third contact of the fifth row of contacts, @@ - or by the _ @ usli> seniagnet: 11 --1 of the public dialer a311 'is operated in the following way: earth, Schaltami c; de> heiiii7ifferwählers K Il'A in the fifth row of contacts, h (intalct 25ltrk, S.ch-tlt <arin; in position 1111r of the contact friction 3, Line 3 29 in Fig. 5 una @ .. contact 33o.ib. Kol> fkdntakt 22okci-r "of the public office voter. -11l ', triggering agnet _l1: 1st battery, earth. The off] öseina-net: 11 <-1 leads the anti-selector All 'back to the rest position, and it is now the participant reached -for the selector Bit- in Fig. 4. <alone with your ü Participants reached via the Aintsleitting .3L.

For the purpose of triggering the code number K I1 '.- 3, the intercom station reached via the BIT- dialer briefly presses its button again and, by influencing the relays AU and AU, triggers the KITA code number dialer. as described for the subscriber reached via the external line dialer --3I1 '.

@ t'ie emerges from the above, is therefore set in connection with a transfer in connection with the dialer BIT 'to the subscriber who is to transfer the exchange connection. However, since, as can be seen from Fig. 7, only the microphone units named fifth to eighth are authorized to make connections with the exchange, a setting of the voter BIT, "by a microphone unit that is connected to the exchange line AL in via the exchange dialer All- Connection is only possible for subscribers who are authorized to connect to the exchange line. This is achieved by 3a13 all microphone units that can directly connect to the exchange line are connected to contacts in contact rows i to 5 of dialing BIl ' and thus the rotary magnet DBIT 'can only be operated in these positions. The decade contact dek of the selector BIT' only switches, as can be seen from FIG 5 and contact 33ovb on the rotary magnet DBiI 'of the `Väliler.

A transfer of a connection to a subscriber with semi-office authorization, i.e. subscribers who can only be connected to the trunk line through the main office, is only possible in the following manner. The subscriber who is switched on via the official selector All "presses his" load "and sets the code dialer K il 'to the first contact of the second row of contacts via which the main station is reached by dialing the code number 2 t notifies that the connection running over the exchange line AL is to be transferred to a subscriber with semi-office authorization. The officer puts her "% 2ihlsclialter WS uni" on it and thereby closes the contact 331 lhS in FIG t 'in the contact rows through (las relay 1>' 2 can be effectively set, namely (read relay BZ in Fig. 5 now through the stronist impulse contact 352 ik of the @troinstoliseii (lers of the civil servant via contacts 330 i) lT'S and 351 ! 1.S influencing the disconnection of an exchange line If an extension is connected via the: Aititswähler Abl- 'finit of the exchange line AL and this extension wants to disconnect the connection finitely with the exchange line AL r to re-seize a free exchange line, the extension dials the code number 5.1 after pressing the earth key. The Kennzitfernw <ihler K ll'A is set to the fourth contact of the fifth row of contacts. As a result, over earth, Schaltaren t, the germ number count KIl'A in umpteen. 5, contacts 2522sk2, switching arm g , of the KITA code number selector on contact 4 of the fifth contact group, winding 1. of relay K., line 333 in Fig. 5 and 4, contact 33ovb, decade switch dek of selector BW in position o-5, battery , Earth or via, -r line 333 in Fig. 5 and 4, contact 335 vat after battery. Earth excited. The circuit via contact 33ovb and decade contact to the battery comes about when a subscriber sets the code dialer to contact 54 via the selector BTh for the purpose of disconnection, while the circuit for relay K5 is closed via contact 335z "at" when the code dialer K 11'A is set to contact 54 for the purpose of disconnection by a subscriber reached via the exchange dialer ATV and there is no connection via the selector BW The relay K54 switches on a reverse winding via contact 334k54, so that the relay drops out with a long delay K54 in Fig. 5 opens the contact 2o8k5., In Fig. 4 and thereby separates the holding bridge between the wires of the exchange line. The connection devices reached via the exchange line AL are triggered.

After setting the code dialer on the call station now briefly presses the contact 54 again via the exchange dialer AW their earth key and causes the code dialer to be triggered in the manner described k tl'A.

If the main office had established a connection to a semi-authorized subscriber via the exchange dialer AW, this semi-authorized subscriber could trigger the exchange facilities in the manner described and then re-establish an exchange connection without the main unit knowing anything about the establishment of this connection. In order to prevent this, the rotary magnet DAW could be controlled in exactly the same way via decade contacts of the exchange dialer AW as the rotary magnet DBW of the voter BLOOD. The circuit for the release relay K54 would then have to run in the same way via decade contacts of the selector AW, so that the release relay K - ,, 4 can only be excited if it is a participant who is in the first five rows of contacts of the selector AW is connected, but excitation of relay K54 is not possible if the selector is set to a subscriber with semi-official rights who is connected to one of the contact rows 6-ö. Flickering to the exchange If there is a connection between an extension subscriber via the exchange line AL with an exchange subscriber, the extension subscriber is able, by setting the code dialer KWA in FIG. to give the switching center reached a flicker signal.

By dialing the code number 55 after pressing the key, the code number selector becomes set to contact 55, so that the following circuit for the step relay K54 comes about: earth switch arm c? of the code dialer KWA in the fifth Contact row, contact 252 uk2, switching arm g, of the code selector KWA on contact 5 of contact row 5, contact 338 k54, winding II of relay K54, battery, earth. The relay K54 opens the contact 2o8 k54 in Fig. 4. At the same time, however, the Excitation circuit opened by opening contact 338 k54. The relay K54 drops out and closes after some time, since it is designed as a delay relay, the Contact 2o8 k54 in Fig. 4 and contact 338 k54, so that once the bridge is again is placed in the exchange line and - the other time the excitation circuit for the relay K54 can come about again. The relay K54 responds again and opens the bridge at contact 2o8 k54 and the excitation circuit for relay K54 at contact 338 k54.

Repeatedly opening contact 2o8 k54 becomes known in Way in the attained via the trunk line AL, not shown switching center a flicker is generated until you press the button on the calling extension triggering the code dialer KWA in the described Way is brought about.

The switching off of the flickering signal can also be brought about in a known manner, not shown, when the officer reports to the exchange reached via the exchange line. Flickering to the main unit If there is an outside call over the trunk line AL, the extension connected to the trunk line AL can switch on a flicker for the main unit by dialing the code number 5o. When the code number selector KWA in Fig. 5 is set to contact 50 , relay K5, is excited via switching arms c, and g "contact 339 k50, which, due to its delay, interrupts the excitation circuit by opening contact 339k., 0. Relay K5, drops and again closes the excitation circuit via contact 339 k50. The relay K5 ″ oscillates and thus causes the busy lamp BL of the exchange line: IL to flicker by opening and closing contact 1 65 k50 in FIG. 5. By flipping the selection key YVT and thus opening the contacts 178 WT and 179 WT in Fig. I and closing the contacts i8o WT and 181 WT, the speech set of the main unit HS is connected to the exchange line, and the officer at the main unit can now request the Answer the extension participant. Intrusion and compulsory disconnection in public traffic If an extension connected to the trunk line AL reaches a station that is busy via the selector BW, an intrusion and compulsory disconnection option could also be provided here, as has been described for internal traffic. The intrusion and disconnection in official traffic would then be brought about by setting the code dialer KTVA in FIG. 5 in the same way as is brought about when intrusion and disconnection in internal traffic is brought about by the code dialer KW. Night connection Leaves the main office z. B. their place during the night, one or some branches is assigned the switching activity by flipping one .Nachtswitch NS. By pressing the switch once night via contact 340 NS via the _Amtsleitung. IL incoming calls are passed on to a signaling device Sig (Fig. .I), which is assigned to the night station or stations. By closing the contact 3.:1r NS, there is the possibility of setting the voter BW through the night station to the decades 6-o, completely independent of the traffic authorization of the intercom stations connected to the voter BIT ', ci. 1i. it does not matter whether the voter B11 'is to be set to a full office or a secondary stela with full office authorization.

Runs z. B. receives a call during the absence of the official at the main office, z. For example, a night station signals the call, via earth contacts i59ar, 3.10: 1: S to the signal means Sia night site (s Fig.4.). The night station picks up the receiver and, after the key has been pressed, initiates the setting of the code digits K [V to the fifth row of contacts. Contact 169ar is opened by relay AR and contact 342ar is closed. The AntriebsmagnetDKZ-in Fig. I of the reference selector KTV will now through the Relaistinterbrecher RLli in Fig. .1 to ground, relay interrupter RUT, contacts 22d ckr, contact 3d.d.NS, @ 'S & ri. @ a6 pks, 22711-, switching arm d of the code remote dialer KU'A in Fig. d. and i, line 2-a8, rotary magnet DKZ, battery, earth actuated until the following circuit via earth, winding I and 1I of relay PKZ in Fig. d., contact 345 NS of night switch NS in contact row 5, contact 96Tis, Schaltann ä of the code number, counter k li, ## @ l to a contact of the calling trunk line AL identified by contact 342a4-, contact 3.I2 ar, relay CAT, CKR, battery, earth. Relay CAT responds in the aforementioned circuit and maintains the aforementioned circuit independently of contact 3.1.3 ar via contact 343 cat. The drive circuit for the rotary magnet DKZ in Fig. I at the contact -2a6 pks in Fig.: 1 is interrupted by the PKZ relay. The other switching operations caused by the relays PKZ, CAT, CKR have already been described. The night view spot is then 8d via the lines 85 in Figure i,:.. 1, contacts 346NS and 3.17NS the night switch Schaltarrie a, b, e and f of the reference selector KTVA, lines 231, -z32 connected to four calling trunk AL .

The assignment of the exchange line AL for an incoming exchange call by the night station takes place in the same way as when an outgoing connection is established by any other extension subscriber. The setting of the exchange dialer AW to the night station is brought about in the same way as the setting of the exchange dialer ATh on the calling extension subscriber. The night station can then accept the request of the calling subscriber and initiate the conversation in the manner described by setting the selector BIV to any intercom. If the subscriber reached via the selector BW is busy, the night station for setting the house unit to the occupied subscriber can bring about the ringing and disconnection of the occupied subscriber. After the connection of the. If the participant reached voter BW, the connection to your desired participant is established via the trunk line AL and the voter BfV. Inquiries via a second trunk line If an extension is iil) he dialer AW in Fig. D. connected to an exchange line and the extension participant wants to hold an inquiry to a subscriber in the public office via a second exchange line, then by setting the code dialer KTVA to a special code, e.g. B. 8, the subscriber 1V connected to a new free trunk. The extension subscriber is connected to the second exchange line in the same way as described when an outgoing first connection is established by setting the code dial KLh to the contact row q.

However, since the corresponding @ Vähler AW of the new exchange line is the extension participant # If the number is set to contact 8, a third winding of the test relay for the exchange dialer are switched on, which despite If the calling extension participant is busy, the connection to the new one Triggers trunk.

As can be seen from the above description, despite the different authorization of the intercom stations, only one type of station is required, which can be equipped with different colored cover plates according to their traffic authorization. A special occasion is provided for each different traffic authorization. If you want to incorporate a new group of areas into an existing system , then I need to install a new starting circuit without interfering with the existing system.

Since, as can be seen from the above circuit, both the code dialer KW and the IC code dialer KWA of the exchange line have not yet been fully used, further special services can be provided for the various decades or individual contacts that are still free.

As can be seen from FIG. 4, a further voter BW is individually assigned to each exchange line. You can also reach this voter BW via a mixed voter, so that the second voter is provided for a plurality of trunk lines together. This has a favorable effect on the profitability of the system.

Furthermore, only a call seeker is shown as the connection unit in FIG and line selector provided. But if it is a larger system, then a group selector is interposed in a known manner.

Checking a corresponding group selector on a calling Subscriber for the code dialer KWA can be done in such a way that a voter similar to a call finder, the iooer group of the calling subscriber visits. After this, the public dialer is set in the manner described. AW on the ten and one contact of the caller.

Rotary dials with seven switch arms are provided as code dial selectors. However, if the brushes are too heavy for one voter, the voter can be divided into two voters, so that one voter with the switching arms a, b, c and d of the code dial selector in a corresponding manner through the lifting magnet and another voter with the switching arms e, f and g is operated by the rotary solenoid of the code dial. The code dialer is then divided into two dialers. As is apparent from the above description, both the calling party N in Fig. I and the called party 7V can obtain the various special services. However, the arrangement can be made that connecting lines are connected to the line selector LW , via which connection devices further exchanges can be reached and a subscriber .dieser exchange via the connecting line and the line selector LW to the relays Y, B1 and B2 shown in Fig. I for the purpose of producing the various special services.

Claims (1)

PATENT CLAIMS: i. Circuit arrangement for telephone systems with dialer operation, the connection points of which can initiate special services, characterized in that a switching device which serves exclusively to initiate several special services and is arranged outside the connection paths to be used for establishing normal telephone connections when an incentive given by a connection point of the telephone system comes into effect under the influence of this connection point .e is brought and the switching device only in cooperation with the facilities characterizing the traffic authorization of connection points initiates a desired special service only if the traffic authorization of the calling connection point corresponds to the switching operations initiating a special service. Circuit arrangement - according to claim i, characterized in that the switching device is brought under its influence by a switching action (key press) which is uniform for several or all special services by the location requesting a special service. 3. Circuit arrangement according to claim z, characterized in that regardless of whether a special service is to be initiated before or during a voice connection, the switching device is always brought under the influence of the same switching measure of a connection point. 4. A circuit arrangement according to claim 3, characterized in that regardless of whether the incentive to initiate special services is effective before or during a connection, always the same switching means provided in the facilities of the exchange for voice traffic, the switching device under the influence of the special service the desired call station (N). 5. Circuit arrangement according to claim i, characterized in that the devices for speech communication in the exchange are provided with two aids for switching on the switching device, one of which (X) under the influence of the calling (N) and the other (Y ) is under the influence of connection points (N1) called in a voice connection. 6. Circuit arrangement according to claim i, characterized in that the switching device (KW) is set by number current pulses according to the desired special service. Circuit arrangement according to approach r, characterized in that the identification selector (K IV) in "lusaniinenktiv" with the facilities identifying the traffic authorization of connection points, a group of equal subscriber stations common facilities allow the establishment of the special service only if the traffic authorization of a connection point corresponds to the special service to be initiated. B. Circuit arrangement according to claim i, characterized in that the devices for identifying the traffic authorization of connection points can act on switching operations to be initiated by the switching device both before and during a voice connection. G. Circuit arrangement according to claim i, characterized in that the switching device (KW) which is assigned to the connection line (AS-LW) or device which is in use when a connection point is called nrichtung (KYVA) is assigned to high-quality connection lines (AL) . ii. Circuit arrangement according to Claim i, characterized in that the special services to be carried out by the switching device (KW) are prepared by the switching means (BR, BR.) Which characterize the traffic authorization of a connection line and which correspond to the traffic authorization of the calling connection point. 12. Circuit arrangement according to claim ii, characterized in that the switching means (BR, BR.) For traffic authorization identification become effective when a connection path is set up and remain effective during the existence of the connection path. 13. Circuit arrangement according to claim 12, characterized in that the switching means (BR, BR.,) Are brought into effect via the circuit transmitting a call stimulus and are held in their working position by the device (V) controlling the triggering. 1d .. Circuit arrangement according to Claim 6, characterized in that connections in certain traffic directions (top view, dictation station, etc.) run via the switching device (KW, KWA). 15. Circuit arrangement according to claim 6, characterized in that after setting the switching device (KW) switching means (CAT) effective who the connection of a be stinnnter traffic direction (public office) outgoing line (AL) to dic connecting line of this connection. 16. Circuit arrangement according to Claim 6, characterized in that: after the switching device (KW, KWA) has been set, switching means (An, An1) are activated which enable an outgoing line (QI_, RL, BL) to the l @ erbindungsleitun g (. IS-L W) with which the body requesting the special service is connected. 17. Circuit arrangement according to claim 16, characterized in that for each of several with a connecting line (AS- LLV) connected connection points (N, 11'1) a coupling device (X, Y) is provided and before the setting of the switching device (KW) the coupling device (X) of the point (N) requesting the special service becomes effective , characterized in that when a query connection is initiated and a coupling device (X) becomes effective, the part of the connecting line (AS-LW) with the other connection points (N1) in Ve rbinding is switched off. i9. Circuit arrangement according to Claim 18, characterized in that one side of the connecting line is disconnected by a switching means (RF) which characterizes inquiry connections. 2o. Circuit arrangement according to Claim i9, characterized in that a switching means (RF) which characterizes inquiry connections is provided for all connection points which are simultaneously connected to a connecting line (AS-LW). 21. Circuit arrangement according to claim 2o, characterized in that the separating point (iigrf, 12o rf) to be controlled by the switching means (RF) is arranged between the two coupling points (82X, 83x; 132y, 133y) of the connecting line. 22. Circuit arrangement according to claim 1q., Characterized in that connections to an alarm receiving center (ASt) run via the switching device (KW) . 23. Circuit arrangement according to claim 6, characterized in that via the switching device (KW) under the influence of preferred connection points (z. B. N) the connection to an occupied connection line serving switching means (P4) are brought into effect. 2d .. Circuit arrangement according to claim 6, characterized in that when setting up a preferred connection to an occupied connection point (Ni) the separation of the existing connection path serving switching operations (earthing of c, in the LW) are brought about with the cooperation of the switching device (KW) . 25. A circuit arrangement according to claim 6, characterized in that when certain code numbers (55, 5o) are selected, the signaling to a point monitoring the connection (office, main office) serving aids (K,; 5, K ") are controlled (flickering). 26. Circuit arrangement according to claim 6 and to, characterized in that switching devices (KWA) associated with a high-valence connection line (AL) are brought into effect when a certain code number (8) is selected, which enables the establishment of an inquiry connection via a connection line (AL ,) the same significance allow. 27. a circuit arrangement according to claim 6, characterized in that the switching device (KW) performs a free selection of outgoing among several in the desired transport direction (AL) lines (z. B. group q :). 28,. Circuit arrangement according to Claim 6, characterized in that the switching device (KW) is the line (AL, RL, etc.) outgoing for the desired traffic direction. determines which, bypassing the incentive path (AS undKWorernurKW), is connected to the connecting line (N) or the connecting line connected to it (AS-LW) via connection devices (AW, ASR, etc.). 29. Circuit arrangement according to claim 6, characterized in that when a certain code number (73) is dialed, the devices of a people search system are brought under the influence of the calling station. 30. Circuit arrangement according to claim 6, characterized in that according to the selected code number (17 or 18) with the cooperation of the switching device (KW) by means of the same connecting device (ASR) inquiry or conference connections are established. 31. Circuit arrangement according to claim 6, characterized in that when a connection is made to a blocked connection line (to Ni) and the switching device is set by a certain code number (8 # 1), corresponding number current surges switching means (P) are controlled which notify a calling station (N) enable the desired connection line (to N1) to become free. 32. Circuit arrangement according to claim 31, characterized in that the switching means (V) controlling the triggering of the connection path is withdrawn from the influence of the calling station (N). Circuit arrangement according to claim 32, characterized in that the release relay (h) is kept energized independently of the calling station (N) so that the calling station (N) can hang up its receiver. 3.4. Circuit arrangement according to Claim 32, characterized in that when the desired connection line (to Ni) becomes free, ringing current is sent to the calling connection point (N). 35. Circuit arrangement according to claim 3q., Characterized in that ringing current is sent out simultaneously to the calling (N) and called (N1) point. 36. Circuit arrangement according to claim 1, characterized in that the switching device (KW, KWA) is transferred to a suitable state (rest position) for initiating this special service by a special switching measure after the end of a special service. 37. Circuit arrangement according to claim 36, characterized in that the transfer of the switching device (KW, KWA) is brought into the rest position by a switching action on the another special service desiring position causes the at quiescent switch device (KW, KWA) whose connection . 38. Circuit arrangement according to claim 37, characterized in that the connection of the switching device (KW, K WA) and its return to the rest position for the purpose of initiating a separate special service is brought about by various bridge relays (X, Ir, A., B,) . 39. Circuit arrangement according to claim t. characterized in that the switching device (KW) serves as a setting selector for connecting devices of a special operation connection (exchange connection). Circuit arrangement according to Claim 39, characterized in that the switching device (KITA) associated with high-quality lines acts as a setting selector for a connection device (AW) under the influence of a switching device (KI1 ') located in a different connection path. .ii. Circuit arrangement according to Claim 1, characterized. that blocking devices (CKR) are provided, which prevent the simultaneous: Arlieiteii of several switching devices (K IG'A, K IV_4,) in a group of connection lines as setting selectors. d :. Circuit arrangement according to Claim 39, characterized in that the switching device (K IG'A) serving as a setting selector is set simultaneously with the connecting device (A [1 ') which opens up the connecting path. .13. Circuit arrangement according to claim 39 for systems. in which connection devices that are already in use are released for connections in certain traffic directions, indicated by this. that the switching device (K WA), which is used as a setting selector, controls the setting of the connection device (AGG ') to set up the desired connection in a certain traffic direction (Aintsverhuling) depending on the existing connection path (AS, KW). 44. Circuit arrangement according to claim .43, characterized in that home construction of connections of certain "traffic direction over the switching device (KWA) and the connection devices (.9S) used before the initiation of these connections running test circuit when reaching the line group over which the connection desired Connection point (N) can be reached, master the setting of the connecting device (AU`) .f5. Circuit arrangement according to claim d.3, characterized in that when establishing connections of a certain traffic direction via the switching device (KWA) and the switching device (KWA) used before the initiation of this connection Connecting devices (AS) running test circuit on reaching the end line of the connection initiating., Connection point (N) causes the setting of the connection device (AW) .46 g (K WA) has so many switching positions (ioo) than connecting lines (ioo) can be reached via the connecting devices (.-1S) assigned to this connecting line. Circuit arrangement according to Claim 10, characterized in that, when the switching device (K G1'.9) of a high-quality circuit (AL) is influenced by an internal control circuit (16, 52 or 56) which characterizes the call to a second circuit, the second of the high-quality line (AL) assigned connection device (NG 'or AGL') is brought under the 1? Influence of the connection point connected to the high-quality line (AL). Circuit arrangement according to Claim .17, characterized in that after the selected code number (52) a conference call or an inquiry call is established by setting the second connection device (BIT). .i9. Circuit arrangement according to Claim .47 for systems with connection points which are only permitted to make high-quality connections under the supervision of an officer. characterized in that after a call from an officer via the switching device (KWA) switching means (WS) bring the setting devices of the second connection device (BI1 ') of the high-quality line under the influence of the monitoring officer. 5o. Circuit arrangement according to Claim .49, characterized in that the switching device (KWA) serves as a service dialer for calling the monitoring beacon. 5i. Circuit arrangement according to Claim 17, characterized in that when a certain code number (52, 56) is selected, switchings are made in the connection devices (AW. DU ') of the high-quality line, which enable the connection to be transferred to the second subscriber. j2. Circuit arrangement according to Claim d7, characterized in that, in an existing inquiry or conference connection, the connection points (N, N,) switched into this connection by dialing a specific one. Control code number (53) via the switching device auxiliary means (, 1IBW, IIIA), which bring about the disconnection of the second subscriber (N1) connected to the connection. 53. Circuit arrangement according to spoke 6 for systems in which high-quality connections are established with the assistance of an officer and incoming calls to a connection point are signaled in the absence of the officer on a high-quality line, characterized in that an extension is transmitted directly in response to an officer in the absence of the officer Call on a high-quality line after a switching device (KW) has been assigned by dialing the code number (5) for high-quality lines, the establishment of a voice connection path with the calling high-quality line (AL) . 54 .. Circuit arrangement according to Claim 43, characterized in that the switching device (KW) adjusts itself to the calling high-quality line (AL). 55. Circuit arrangement according to claim 54, characterized in that the switching device (KWA) assigned to the calling high-quality line (AL) has a connecting device (AW) assigned to the high-quality line (AL) as a function of your established connection path (AS-I (W) 56. Circuit arrangement according to claim 6, characterized in that multi-group dialing units are used as switching device (KW, KWA), in which special group identification circuits are maintained even after setting a specific bank contact.