DE971543C - Method for establishing connections, preferably those that have to be established frequently, in telecommunications systems, in particular telephone systems - Google Patents

Description

Berlin

The invention relates to a method for establishing connections, preferably those that often have to be made in telecommunications, especially telephone systems, in which by a destination dialing device arranged in the exchange a conversion of an abbreviation (e.g. Key identification) in the actual participant number. Under "Dialing Devices"? are to understand those facilities assigned to a subscriber, the after identification of the desired The connection point automatically sends out the series of current impulses required to set up the connection path. Known arrangements of this type control the automatic connection establishment with the help of mechanically trained, spring or motor driven transmission members and a special one Impulse contact. However, this requires the provision of specially trained participant stations, or an additional device must be added to the normal connection point. Special connection points

809 725/13

require a conversion of the production from normal to special types. An accessory is for inconvenient and annoying for the participant, since his or her workplace is significantly hindered. Also is a Intervention in the ward circuit is necessary, as the device has an impulse contact with the connection line of the participant must be associated.

These disadvantages are also not remedied in the case of known destination dialing devices that rely on circuitry Working basis. In addition to the subscriber station, you need a keypad for selection of the respective subscriber to be selected. In contrast to the

iS mechanical one has the advantage that it is not required is to arrange the destination dialing devices themselves directly at the subscriber station, but remotely from her, e.g. B. in the exchange, but it is essential that the individual keys of the

ao keypad special lines must run to the speed dialing devices.

The invention overcomes all of these disadvantages. Neither is a special training of the participant station for Additional devices are required for the purposes of destination dialing. According to the invention differs thus a subscriber station with the possibility of target selection in no way different from those produced in ongoing production Normal types, and there the marking for the preparation of the target choice and the influencing the destination dialing device itself is only controlled via the existing normal connection line, there is no need for any additional line work.

This object is achieved according to the invention in that a conventional one by pressing the earth button Participant set prepared the destination dialing and then using the dial of this set the abbreviation assigned to the subscriber to be called is selected.

The principle according to which the invention works is known per se. For example, it is used at Saving and converters used to change the numbering and renumbering of the to change the number and number of current impulses sent out and the existing one System to adapt. It is an essential feature of the present invention to use the principle known per se without the application of special constructive and mechanical ones Means at the connection point and without intervention in this using a one-touch dialing arrangement only to have made available by devices that are currently used in telephony technology.

The only requirement with regard to the connection point is that one desires a direct dialing connection Subscribers provide the station, which is largely known in extension technology, with a button is. Of course, if certain reasons make it advisable, the wards could also be designed so that in addition to the key that is already used for other purposes, a special key for the one-touch dialing is arranged.

An exemplary embodiment of the subject matter of the invention is shown in the drawing. In the upper part of the drawing, a subscriber station Tn equipped with an earth button ET is shown, which is connected in a known manner via the connecting line to the subscriber's own preselection device VW . The switching devices assigned to the subscriber for processing the abbreviation and converting it into the series of current impulses controlling the establishment of the connection are located in front of the preselection element in the exchange. The essential components of these devices consist of the token memory KZS, the surge generator STE, a sequence switch FS and pulse control devices /, R, V, Vx.

The token memory KZS, driven by the magnet DA, consists of an indexing mechanism with a number (six) switching arms and at least as many positions as the subscriber's abbreviations require.

The sequence switch FS, driven by the magnet DM, is also an indexing mechanism with several (four) switching arms. It is switched on by one contact after each series of current impulses sent, whereby that switching arm of the token memory is switched on, via which the number of current impulses to be sent is determined.

The impulse generator consists essentially of a chain of relays Sx to S6, which are activated one after the other and switch on the switching arms of the short code memory one after the other until the switching arm is switched on, via which, taking into account the wiring to the subsequent switch, the circuit to terminate the pulse transmission closed is.

The pulse control devices consist of the relays /, R, V, Vx. They are used to determine the pulse ratio, to create pauses between the individual series of impulses, to ensure the transmission of operating and selector signals and to other controls.

For the present embodiment it is assumed that the subscriber Tn gets by with ten abbreviations, ie that he has to communicate with ten subscribers by telephone more frequently. A ten-part rotary selector with six switch arms would then suffice as a token memory. The abbreviation itself then consists of a digit "x" to "0" to be selected with the dial. If there is a greater need for abbreviations (up to a hundred abbreviations), a hundred-part lever-operated rotary selector could be used; the abbreviations would then have to be two-digit (»οτ« to »001?).

The subscriber Tn is connected to a system with seven-digit subscriber numbers. With ten abbreviations, the subscriber only needs to remember the ten digits "τ" to "0" for the ten digits that are frequently called instead of ten seven-digit numbers.

For the example it is assumed that after the abbreviation "x" has been selected by the devices mentioned, current impulse series corresponding to the subscriber number "3 484 569t." be sent out.

If the subscriber lifts the handset to initiate a connection, it will be because the connection

line contacts over η and is connected through 14 to metallic, annealed in the usual way, the selection of the subscriber in the exchange, so that a free subsequent connection device is turned on. In the selection, the call relay R 1, not shown, was switched on, which closes the following circuit via contact 30 rx : earth, switching arm da6 in position zero, reference signs HZz, HZi, contact 30Π, windings of the relays Be, A, B, minus. The three relays A, B, Be speak. The following holding circuit is established for relay Be : Earth, winding II of relay Be, contacts 35oe, 37 ", 42 w, magnet DA (does not respond), minus. The relays A and B are connected to the subscriber loop in the following holding circuit: Minus, winding II of relay A, contacts 3a, zbe, upper speech wire, participant loop, lower speech wire, contacts 6be, 5b, winding II of relay B, earth. If the subscriber wants to establish a connection in the normal way with his dial without using the speed dialing facilities, the holding circuit for the relays A and B is interrupted when the dial pulse contact is opened for the first time, so that these relays drop out and are removed from the connecting line of the calling subscriber switch off. The subscriber line is then completely activated, so that the transmitted current surges are picked up in the usual way by the receiving devices of the exchange and passed on for the purpose of setting up the desired connection path.

If the subscriber wishes the automatic transmission of the numbered burst series by the target dialing devices, he must press his earth button ET before pressing the number disc. This shorts relay B while maintaining the excitation circuit for relay A. The following circuit is established for the relay An : Earth, contacts 17 a, 18 δ, winding of the

Relay on, resistance Wi 1, minus. Relay An is placed in a holding circuit via contact 19 on. If the subscriber releases the key, relay B is energized again, since its winding II is now connected to the original circuit through the subscriber loop via contact 4 «#. Since the relay An is energized for the entire duration of the destination dialing, the relays A and B at the contacts lan and 4 an remain switched on independently of the relay Be . Via contacts το an and 20 be , an official code AZ is now transmitted to the windings I of the relays A and B and thus inductively to their windings II, which indicates to the calling subscriber that the target dialing devices are ready to accept the short code.

The loop interruptions that occur when the abbreviation is transmitted cause the relays A and B to drop out in pulses. Relay A transmits the pulses to the magnet DA. When the accepted abbreviation »1« is sent out, the rotary magnet DA of the abbreviation memory receives a current surge: earth, contacts 44 on, 45a, 46 be, rotary magnet DA, minus. The switching arms dax to da6 are brought to the first contact. Outside the rest position, the shaft contact 42 ze> is open, 41 ze> is closed. After drop (The relay Be [delay relay] of the impulse series will be via contacts 35 and 36 as [Contact of the rotary magnet DA] kept energized at more current pulses until the end.) Of the relay Be is the contact 25 be a hitherto existing short circuit for the Relay V opened, which now responds via contacts 19 ««, 23 r and resistance Wt 3. Through contact 63 t) the capacitor Co 3 is placed in the following charging circuit: earth, capacitor Co 3, contacts 641, 63 z;, resistor Wi 7, minus. A circuit for relay Vi is closed at contact 48 ν : earth, contacts 47 on, 48 V, winding of relay Vi, resistance Wi 4, minus. The capacitor Co 4 (electrolytic capacitor) lying parallel to the relay Vi is used to give the relay Vi a considerable drop-out delay for the purpose of generating the necessary pause between the individual series of impulses sent by the target selection devices. The magnet DM of the sequence switch FS receives a pulse that begins when relay V responds and ends when relay Vi responds (delayed by Co 4): earth, contacts 34 ^ 1, 33J, 32a, magnet DM, minus. The switching arms dmi to dm 4 are thus brought to the first contact. The transmission of the target dialing current impulses is carried out by relay /, which on contact 11 i interrupts the loop closed via contacts 8 to, xii, I2V, 13 on impulses and thereby forwards the current impulses to the office. After the relay Vi has responded, it is excited in the following circuit: earth, contacts / ^ jan, 52t) 1, 53? -, windings II and I of the relay /, minus. Then the following circuit for relay R follows: earth, contacts A ^ connected, 49 i, windings II and I of relay R, minus. By opening the contact 53 r , the relay / is brought to waste, which takes place with a delay, since its winding II was short-circuited by contact 541. By adjusting the adjustable resistor Wi 6, the degree of the drop speed can be adjusted. After the relay / has dropped out, the circuit of relay R is interrupted at contact 49 i. As a result of the short circuit of the winding II at the contact 5ir, the dropout of this relay also takes place with a delay, the degree of the delay also being adjustable by an adjustable resistor Wi 5. The game between the relays / and R continues, the current impulses being transmitted to the office through relays / (at contact iii), as mentioned above. When the relay / responds for the first time, the charge of the capacitor Co 3 is transferred to the winding I of the relay Si via contact 65 i : earth, capacitor Co 3, contacts 654, 66s4, 68s3, 71S2, 73SI, winding I of the relay Si, earth . The relay Si responds and is in the following holding circuit: earth, contacts 88 v, 82s4, 79S3, 77SI, 76S2, winding II of relay Si, minus. When relay / drops out, the charging circuit for capacitor Co 3 is closed again at contact 641. The next time the relay / responds, the charge on the capacitor Co 3 is transferred to the winding I des via the now closed contact 74s 1

Relay S 2 released. Relay S 2 switches off the holding winding II of the relay S ι at contact 76 sz and is placed in a holding circuit via contact j8s2 and its winding II. The next capacitor charge is brought to winding I of relay S3 via the now closed contact 72 s 2, which now closes a hold circuit via contact 81 S3 and winding II by switching off winding II of relay S2 at contact 79S3. The next capacitor discharge is conducted via contact 69.S3 to winding I of relay S 4, which opens the holding circuit of relay S3 at contact 82 s 4 and, by closing contact 84S4, closes a holding circuit running through its winding II. The next capacitor charge is conducted via contact 67 s 4 to winding I of relay S 5, which, with the switching off of relay S 4 at contact 8355 via contact 86 s 5, is placed in a holding circuit running over its winding II. As at the beginning of the chain, the next capacitor discharge affects relay Si, which interrupts the hold circuit of relay S5 by opening contact 85si, but first switches on relay S 6 via contacts 77si and 75s5 and winding I. This is placed via its winding II and the contact 87 s6 in a holding circuit, which is maintained for the duration of the current impulse series that is about to be transmitted. The holding circuit for relay Si is in turn closed via contacts 77 sr and 76 s 2. As a result of the capacitor charges and discharges following the fifth, the relays Si to S5 are switched on one after the other in the same way as previously described, with the difference, however, that the relay S6 is also energized. Of the ten current impulses, which have a maximum of one series of current impulses, the relay S6 is thus additionally energized during the second half (6 to 0). Relay S6 switches off the switching arm dm 1 of the sequence switch FS at contact 27s 6 and applies the switching arm dmo to contact 28s6. This arrangement allows the ten different digits to be identified with only six identification relays.

It should be remembered that certain wiring is used to set the destination dialing device in such a way that it establishes a connection path to the subscriber with the connection number "3 484 569" after the abbreviation "τ" has been sent. After three pulses transmitted by the relay /, the relay S3 with the hold circuit was switched on. The following circuit is then established: Earth, contacts 26 i, 27s6, switching arm dmx of the slave switch in position 1, switching arm das ^{m in} position 1, contact 59S3, winding III of relay R, minus. The responding in this circuit and temporarily energized relay R interrupts the impulses generated by the relay / and R at contact 53 r. During the impulse transmission, the relay V was short-circuited impulsively via contacts i and 22 r without changing its state. If, however, the relay R remains switched on for a long time via its winding III, relay V drops out. By opening the contact 48 »the circuit for relay Fi is interrupted. During the considerable drop-out delay of this relay, the circuit for winding III of relay R is maintained via contacts 56 ν ι and 55 υ . By opening the contact 88 ν , all relays of the relay chain Si to S6 are brought into the rest position. The capacitors Co 1 and Co 2 are switched on at the contacts gv and 15 ν after the transmission of each series of impulses has ended, which enables the calling subscriber to monitor the establishment of the connection, ie to perceive the signals transmitted via the connection path established up to now Contact 12 ν released choke coil Dr prevents the signal currents from flowing away excessively. If the subscriber hears the busy signal while a connection is being set up due to the fact that a dialing level or a connection line is busy, he can immediately terminate the unsuccessful connection attempt by replacing the handset. The relays A and B then dropping off relays An is caused to drop by a short circuit (via contacts 16 α and 18 δ), which, as is easy to see and explained in more detail later, triggers all of the target dialing devices.

If relay Vx drops out after the delay time has elapsed, the circuit for winding III of relay R is opened at contact 5601. The relay V, freed from the short circuit by opening the contact 22 r, can respond again. The rotary magnet DM of the sequence switch receives the next current impulse via contact 32 ", which moves it into the second position so that the switching arms dmx to dm ^ are on contact 2. At contact 48 ″ the relay Vx is switched on again, which, by closing contact 52WI, sets the current impulse transmission to send out the second digit of the desired connection number. After four pulses of the relay S4 is in the impulse generator STE energized with hold circuit so that the following circuit is created: earth, i contacts 26, 27s6, shifting dm 1 of the subsequent switch in position 2, switch arm as 4 in position 1, contact 61S4, winding III of relay R, minus. After four current impulses corresponding to the second digit;> 4 <i, relay R ends the current impulse transmission. By closing the contact 22? - relay V is again brought to waste by short circuit, so that all relays of the surge generator are brought to waste by opening the contact 88 ν. After the pause determined by relay Vx has elapsed , relay R (at contact 56 ^ 1) is brought back down, relay V is switched on again. The switching arms of the sequence switch are switched on by one step so that they are on contact 3. The third digit to be transmitted is "8". After five current surges have been transmitted, the relay S 6 is switched on in the manner described above, which now makes the switching arm dm2 of the slave switch effective at the contact 28 s 6 instead of the switching arm dmi. Eight emitted current impulses are characterized in the current impulse generator in that the relays S 6 and S ^ are energized. After eight current surges have been emitted, the following circuit is established: Earth, contacts 26 i, 28s6, switch arm dmz in position 3, switch arm da% in position 1, contact

59 ^S 3> winding III of relay R, minus. Relay R in turn ends the series of impulses and causes relay V to drop again. The next switch comes to position 4. If four current impulses are sent out according to the next digit ("4"), the relay S4 with hold circuit is energized. The following circuit is established: Earth, contacts 261, 27 s 6, switch arm dm 1 in position 4, switch arm da 4 in position 1, contact 61S4, winding III of relay R, ^ minus.

With the next digit (\> 5 «), the relay S 5 with hold circuit is switched on after five current surges have been transmitted. The following circuit is established (sequence switch in position 5): earth, contact 26 i, 27 s 6, switch arm dmi in position 5, switch arm da ζ in position i, contact 62S5, winding III of relay R, minus.

After sending out the current impulses according to the next number "6", the relays S6 and Si with holding circuit are energized. The following circuit is established (next switch in position 6): Earth, contacts i6i, 28s6, switch arm dm 2 in position 6, switch arm daz in Position 1, contact 57si, winding III of relay R, minus.

After the transmission of the current impulses corresponding to the last digit "g" , the relays S6 and 54 with holding circuits are energized. The following circuit is established (next switch in position 7): earth, contacts 26t, 28s6, switch arm c? M2 in position 7, switch arm da ^ in position 1, contact 61 s 4, winding III of relay R, minus. If the relay R is now energized for a longer period of time, a short circuit is created for relay An , which has no effect during the impulses due to the brief closings of contact 24p: earth, switching arm that in position 1, switching arm dms in position 7, contact 24 ^, Resistance Wi 1, minus. The relay on thus drops out. By opening the contact 47 on , the pulse relays R and / and relay V 1 are switched off. By opening the contacts τ an and / \ an , the relays A and B are switched off from the connecting line, and are switched through to the contacts 7 an and 14 to the subscriber line to the exchange. The following circuit is closed at contact 31 an: earth, relay interrupter RU2, contact 31a «, switching arm dm 4 of the control switch on the segment, rotary magnet DM, minus. Under the influence of the relay interrupter, the switching arms of the control switch are advanced step by step until the rest position is reached. The following circuit is closed to return the short character memory: earth, relay interrupter RUt, contacts 3860, 39 ««, 410 », rotary solenoid DA, minus. Under the action of the relay interrupter RU 1, the switching arms dax to da6 are incremented until the shaft contact 41 w is opened and the rest position is thus reached.

The connection to the desired participant is now established. If he answers, it can Conversation, since the calling party's line is fully activated, conducted unhindered will.

Usually it will be sufficient to assign the subscriber a one-touch dialing arrangement for ten different subscriber lines. As already mentioned, an io-part rotary selector is sufficient as a short character memory. The subscriber only needs to memorize the digits »τ« to »ο« for the various connections.

According to the invention, a special embodiment of the dial is then provided, such that instead of the base plate with numbers there is a disc with names or abbreviations of the Target dialing callable connection points can be noted. Because the digits are repeated on the perforated disc are, the clarity on the subscriber set is not disturbed.

Claims (6)

Patent claims: 1. Methods of establishing compounds, preferably those that are frequently made must, in telecommunications, in particular telephone systems, in which by a destination dialing device in the exchange a conversion of a short code into the actual subscriber number takes place, characterized in that by pressing the earth key of a conventional subscriber set the destination dialing prepared and then the one to be called using the dial of this device Subscriber assigned abbreviation is dialed. 2. The method according to claim 1, characterized in that by the abbreviation a switching mechanism ( token memory KZS) is set with the number of maximum current impulse series to be emitted corresponding tapping options and after marking the individual tap positions by a sequence switch (FS) with the help of pulse control devices (STE, R, J) the individual series of current impulses are formed and transmitted. 3. Device for performing the method according to claim 1, characterized in that the Impulse control devices influence switching means (F) through which the calling subscriber receives the dialer signals transmitted during the connection setup can be made perceptible. 4. Device according to claim 3, characterized in that after each transmitted series of impulses capacitors (Co 1, Co 2) are connected to the connection line, via which the signals transmitted by the office are made audible to the calling subscriber. 5. Device for performing the method according to claim 1, characterized in that Switching means after lifting the handset at the calling point on the subscriber line be switched on and the activation of the Carry out token memory while transmitting power surges without prior Pressing the button, the switching means are switched off from the subscriber line and this is switched through metallic to the office. 809 725/13 6. Device for performing the method according to claim i, characterized in that the stationary digit carrier is replaced by a disk on the subscriber set which the connection points that can be called by direct dialing are identified, and that the identification can be seen through the perforated disc. Considered publications:
German Patent No. 673632;
U.S. Patents Nos. 1772,713, 2,093,246, 3172579;
Telecommunication technology of telephone construction and normal time, April 1949, by K. Scheibe and H. Wolffhardt, pp. 80, 84. 1 sheet of drawings & 809 725/13 2.59