DE746008C - Circuit arrangement for the automatic distribution of calls to free workplaces in telephone systems, especially in remote offices - Google Patents

Description

Circuit arrangement for the automatic distribution of calls to free Workplaces in telephone systems, in particular in long-distance offices The invention relates on telephone systems in which to receive or handle calls Operators are switched on .. In such systems, in order to be faster Handling of the traffic the incoming calls automatically to the individual workplaces distributed. However, for economic reasons it is not possible to have as many jobs to arrange that every connection request can be dealt with immediately. In particular in times of heavy traffic, the so-called peak traffic, often all Civil servants engaged in receiving or handling connections, see above that new incoming calls have to wait to be dealt with.

Various arrangements have already become known with their Help saved the waiting calls and when jobs become vacant these be forwarded. It is particularly difficult to pause for a moment specific order in handling the waiting calls as those for the storage of calls in the order in which they come in, and in particular those for forwarding of waiting calls in the same order when a workstation becomes available required facilities represent a very significant expense. One has therefore especially in the reporting traffic in long-distance offices for the handling of calls waiting completely omitted in a certain order, which, however, sometimes takes a long time Waiting times for the calling participants.

The object of the invention is to create an arrangement with which Help the mean waiting time of the lines in a group is reduced without having to provide complicated storage and release facilities. This is because of this reached that the calling Lines divided into groups and each group is assigned switching means which are activated when all operators are busy of the workplaces switched on display devices of the group depending on control the number of calls waiting in various ways.

The arrangement according to the invention has the advantage that the display devices can immediately see in which groups there is an accumulation of waiting calls is available. Accordingly, the required personnel deployment can be simple Icing can be regulated. For the operators at the individual workstations there is a requirement to join the group in which the largest Number of waiting calls is present, so that traffic peaks in the individual groups quickly balanced and thus the mean waiting times for the calling participants a group can be reduced to a practically tolerable level.

An exemplary embodiment of the invention is shown in the drawing. The calling lines are divided into groups and are forwarded via Mixing selector switched to free connecting links of remote signaling stations. The drawing above shows a group I calling line, for example can be connected to a group selector and equipped with a zNTFI mixer selector is. A free second mixer selector 11IWII is reached via this mixer selector, its contacts with the links, e.g. B. Cord circuits, of the various Jobs are connected. Of groups II and III, only those are for understanding circuits and switching means that are absolutely necessary for the invention are shown, while the other facilities correspond to those of Group I.

If a call comes in via the line shown above, the relay R is activated via the third wire. It closes a circuit for the drive magnet D via the switching arm d in the rest position and via the contacts i y- and 2 t , so that the mixer 1LIII% I starts up and sets itself to a free second mixer, for example the illustrated selector HWII. Once this has happened, the relay T speaks via the switching arm d, contact 11-. ' its windings I and II, switching arm c from iIZWI, winding of relay R i, contacts 3 r 1 and d. g at. It interrupts at the contact: 2 t the circuit for the magnet D, closes its high-resistance winding I1 via its contact 5 t for the purpose of blocking the occupied selector and switches the speech wires via the Korttalcte6t and 7t to the occupied t -% 'äliler a11h II by. The latter is started in a known manner and adjusts to a free emery circuit of a free workplace. If this is the one shown in the drawing, the following circuit is established: Earth, battery, contact S ri, windings 1I and I of relay P, lower switching arm of 1-IIT'II, winding of relay C2, contacts 9c2, iob i, Earth. The relays P and C 2 respond. The relay P shorts its high-resistance winding 1I with its contact i ip and switches the speech wires through to the occupied cord circuit via the contacts i2p around 13p.

It should be mentioned that a check of the voter _1ILT'II on the shown line drinking circle can only occur. when the relay B i is energized. For this purpose, three buttons S i, S2 and S3 are assigned to the work station PI i, via which the relays B i, B 2 or B 3 can be switched on as desired. The reason for this arrangement will be discussed later. The officer had pressed the button S r and thus energized the relay hi, which established a holding circuit for itself via contacts 14b1, 15b2, 16b3 and 1 ja i. When relay C2 responded, the call lamp AL of the cord circuit shown was lit up via contact 18 c2 and contacts 19 a i and 2ok. The officer puts the associated interrogation switch .IS around, so that her interrogation device Abt connects to the occupied cord circuit and the relay A i is switched on via the third contact of the switch AS. When contact i9 ai is opened, the call lamp goes out, and by (opening contact ij a. I, the holding circuit for relay B i is interrupted. The circuit for relays P and C2 is switched on via contact 21 c 2. If it is a remote reporting station at which the officer can also establish connections herself, she inserts the plug St into the jack K1 of the desired long-distance line after receiving the request of the calling subscriber. The relay k responds and stops the circuit for the call lamp AL on contact 2o 1, open even after the relay A i has dropped out. If the officer leaves the connection, she puts the interrogation switch .d5 'back into the idle position shown, whereupon the relay A i: drops out and the officer presses one of the keys S i, S2 or S3 to receive further calls.

The processes described above were based on the assumption that when a call came in, there were still vacant workstations. If this is not the case, then by opening the contact 4g, via which the occupancy circuits run for all second mixer selectors of the group, checking them is prevented, and the selector tlIW I is stopped on its last contact. If all workplaces PL i, Pl2 etc. are busy, the contacts 22 (L 1, 23 a2 and the corresponding contacts of the relays of the other places excited via the interrogation switch are open and the relays G i, G2 etc. have dropped out, so that the relay G is energized via the contacts 24 g 1, 25 gz and via contacts of the cut-off relays controlled by the other places.

The contacts m i, m2 etc. become when the headset is plugged in closed by the operator and are therefore open when the space is unoccupied.

If a new call now arrives, the mixing selector 17WI is left on in the manner described above, but cannot check for a second mixing selector 1VIW II because contact 49 is open. If, however, the switching arm c reaches the last position, the relay T speaks from the battery via switching arm d, contact ir, its windings I and II, switching arm c, resistor W, contact 26L i to earth and sets the 2 t by opening its contact Voters silent. A circuit for the relays E i, F i and H i common to all MWIs of group I is closed via the switching arm e and the resistor W i. Of these, however, only the relay E i can respond, since the other two are designed as insensitive relays and do not receive enough current via the high-resistance LV i to attract their armature. Via the contact 27 e 1 , the white lamp WL i of the display board AT common to all groups is lit up and thus the officers at the workplaces are shown that there is a waiting call in group I. If, for example, five of the mixer selectors 1VIWI from group I have reached the last position, the current flowing through the circuit for relays E i, F i and H i is amplified as a result of the parallel connection of five resistors W i in such a way that relay F i responds and switches on the green lamp GL i of the waiting field via its contact 28 fi. If there are ten waiting calls in group I, the parallel connection of io of resistors W i also causes relay H i to respond and switches on the red lamp RL i of the waiting field via its contact 29 hi. When this lamp lights up, the officers recognize that there has been a considerable accumulation of waiting calls in Group I and are obliged to give priority to Group I when their workplaces become vacant. This is done by flipping the switch S i and thus making the relay P i respond. The relay N i is switched on via the contact 30 b 1 and opens its contact 26 , L i, so that the relays T of the waiting mixer tap MTV 1 drop out. The rotary magnets of these selectors are switched on via contact 2 t , which can now check for free second mixer selectors MWII, since contact 4g was also closed when an officer became free. The voters lIIWII prefer to use the cord circuits marked via the contact io bi or via equivalent contacts at the other workplaces. Meanwhile, the second mixer selector indicated in groups II and III cannot find a free cord circuit, since the contacts 31 b 2, 32 b 3 and the equivalent contacts at the other workstations are open.

In a similar way to the one just described for Group I, they also play. Processes in groups II and III in the event of an accumulation of calls by the relays F2, H2 or F3, H3 responding when there are five or ten waiting calls in these groups and the green one via their contacts 33f2, 34h2, 35f3 and 36j23 and switch on the red lamp.

If the officers at the workplaces determine that there is a particular accumulation of calls in Group II, they press the S: 2 button and thus switch on relay B y, which is via contacts 37 b 2, 38 b 1, 39 b 3 and 17 ai holds. It prepares the occupancy circuits for the relays C3 and C4 at contact 31 b2 and switches on the relay N 2 by closing the contact 4o b: 2 , which in the same way as described above for N i, the waiting first mixer of the Group II starts.

Must be the group III preferably be operated, the switch S3 is operated in the workplace and so turned on, the relay 133 which maintains itself via the contacts 41 b 3, 42b1, 43 b2, and 17a1. B3 switches on relay N 3 via contact 44 b 3 and prepares the occupancy circuits for relays C 5 and C6 at contact 32 b 3.

From the above description it can be seen that the accumulation waiting calls in the individual groups is gradually displayed and thus on in a simple way, the officers at the workplaces are given the opportunity to to prefer to join the group in which there is currently a peak in traffic. In addition, the inspector has the option at any time the Determining the burden on the individual groups and by filling additional jobs to compensate for the waiting times.

Claims (3)

PATENT CLAIMS: i. Circuit arrangement for the automatic distribution of calls to free workplaces in telephone systems, in particular in long-distance offices, characterized in that the calling lines are divided into groups (I, II, III) and switching means (E, F, H) are assigned to each group control the display devices (N% L, GL, RL) of the group that are switched on when all operators of the workstations are busy, depending on the number of waiting calls. 2. Circuit arrangement according to claim i, characterized in that different colored depending on the number of calls waiting in each group Lights (white for one to four calls, green for five to nine calls, and ten and more calls red lamps) are switched on. 3. Circuit arrangement according to claim i, characterized in that the switching means are designed as relays (E, F, H) responding to currents of different strengths, which only when a certain number of resistors are connected in parallel (W i, W: 2, W3), one of which is assigned to each waiting line, tighten its anchor and activate the corresponding display device (GL or RL). Circuit arrangement according to Claim 2, characterized in that the different colored lamps (WL, G1_, RI_) are arranged in groups next to one another on a display panel (AT). In order to differentiate the subject of the application from the state of the art, no publications were taken into account in the granting procedure.