DE1023492B - Circuit arrangement for telecommunications systems, in particular telephone private branch exchanges - Google Patents

Description

GERMAN

The invention relates to a circuit arrangement for telecommunications systems, in particular telephone private branch exchanges, where the choice of the main station and the call point is possible, d. H. Investments, where it is possible to use certain extensions from certain desired authorized extensions to assign the function of the main unit or the call center.

In a known circuit arrangement, this possibility of allocation is for two preferential branches given. In this arrangement, the allocation is made in principle by the fact that the allocating and the extension authorized for allocation after picking up their handset and after the thereby caused occupancy of the internal connection set a certain code number is selected from the numbers the connection numbers of the connectable extensions is different, in particular is greater than the number of the connectable extensions. After dialing this code, the will be used first as the main unit provided authorized branch extension by dialing its connection number the function of the main unit and then the authorized extension number provided as a further call point by dialing the function of the call point is assigned to their connection number.

The above-described use of a certain code number to initiate the allocation process is to be regarded as extremely disadvantageous. If you limit yourself to the use of single-digit connection numbers, for example, this has the following effect: that the number of extensions that can be connected to such a system must be less than 10. This means that in this case such an arrangement is used at most for a system type with six extensions can be. Should a special code number for the initiation of the allocation process also for private branch exchanges be used with more than nine extensions, would have to be used for the extensions that can be connected Connection numbers are provided that at least partially contain more than one digit. One such The process would in no way be justifiable from an economic point of view, as it would involve considerable additional expenditure on switching means, especially on relays.

The invention basically avoids these disadvantages. According to the invention, the allocation switching Facility controlled by the extension making the assignment by dialing its own connection number, namely by the fact that via the contacts of the exchange switching relay, which, as is known, according to occupancy of the exchange line is in the working position, the relays are actuated by the transmission of further from assigning participants of sent out series of current impulses a marking of the newly determined main station and the Circuit arrangement

for telecommunication systems,

especially telephone

PBXs

Applicant:

German Telephony Works

and Kabelindustrie Aktiengesellschaft,

Berlin SO 36, Zeughofstr. 4-11

Paul Graf, Landstuhl (Palatinate),
has been named as the inventor

Cause further call point. So since the device switching the allocation is not by choosing only one for all extensions authorized to carry out this allocation are controlled with the same code number, it is possible to get by with one-digit connection numbers with a system type that has a total of ten extensions. The method according to the invention can of course also be used for systems with fewer than ten Use extensions as well as for larger systems. The latter is also used multi-digit connection numbers necessary.

The control and actuation of the device switching the allocation by the allocating extension is carried out according to a further embodiment of the invention via a query record, which is from this Extension is seized by seizing the exchange line and then pressing the signal button. Through this What is achieved in particular is that internal connection calls are also made during the course of the allocation process can be guided. In principle, it is of course also possible, and with private branch exchanges that have more than one internal connection set, without any disadvantage, for the control and operation of the Allocation switching device to use an internal connection set, which can be activated by lifting off the Handset of the assigning extension is seized.

After dialing the own connection number of the extension to be allocated, the allocation of the The function of the main unit and that of the secondary call unit through the

7CD 877/90

3 4

following dialing first of the connection number as after dialing, the Fe relay drops out, whereby the

Main unit, then the connection number that comes under power as a continuation Pr relay in the following current path

extension provided for the call station. and attracts.

According to a further embodiment of the invention, each j _y 2r 1112, 3 rill 2 4 r III 2 5 r II 1 r II Pr

desired extension through appropriate connection 5 ve 'ύ r 12 ebl ν 11 +'''

of bridge points either as to '' '' "'..

Carrying out the allocation privileged or as this Subsequently, the relays Eb and W are energized because

non-privileged extension can be specified. To the exchange line assigned to extension 1

Record of a preferred extension with relay IiJ is in the working position.
Allocation made with the help of their dial plate

the function of the main station and the call station -, W, Eb (I), 1 u III, 6 r 11, 1 r III1, ec II, fr III,

latching relays are advantageously used. It y 11, +.
this avoids the power consumption

a private branch exchange by starting up the contact eb I, the holding circuit for the allocation arrangement according to the invention is unnecessarily interrupted at 15 Pr and Ir relays, so that both relays rise. It also ensures that one of one will fall off. At the same time, a circuit is formed for the unauthorized extension with the help of the number-thrower excitation of the stick-on relay disk in the working position, the allocation of the function of the.
Main office and that of the call point in the event of failure of the
Power supply is maintained. * o _, Α ,

According to a further development of the invention, '3 W (III), 2 W (III), I TF (IV)

as soon as a preferential extension their own arrival _ec m 2, EBL, yl 1 +.
final number has chosen the existing one with the help

The allocation of the number disc made these windings of the adhesive windings are so dirnen-function Main body and that of the call center 25 sioniert that the discard excitation lifted within the error. Through further training the countercurrent condition lies.

The state of the invention also ensures that, after the Pr relay has dropped, a contact is made

as long as no allocation by means of the dial of the delay relay Eb energizes the relay Ec , which is

is made, so even after cancellation of a contact ec 11 holds itself,
existing allocation, extension 1 as main 30

place and another extension, for example the -, Ec (I), eb III 1, pr III, y 11, +.
Extension 2, is switched as a further call point, so that

an outside call cannot be lost. At the same time, relay W is activated during the waste

Any desired extension can, after a further delay, be held by Eb via the following circuit: Implementation of the invention by simply connecting 35

of bridge points either as to -. ^w > ^wi *. Points x, ec I 2, w II, eb III 2, y 11, +. Carrying out the allotment preferential or as this

non-privileged extension can be specified. If the .Ec relay has picked up, the £ if relay is activated via

In addition, the allocation device can supply its two windings in opposite directions with current

possibility of assigning the function of main unit 40 is set so that it cannot respond,

be limited alone. _TI . _ ".. _, _, _{/ τ} . _{ττ 7ΤΤΤ} _ _ΎΛ

Special measures also cause "" · ^W > ^Wll > points *, Ed (I), w II, eb III 2, y 11, +.

that the trunk after completion of the entire -, Ed (II), ec III1, eb III 2, y 1 1, +.
Allocation process automatically activated again

will. 45 About one winding of the S-relay becomes inductive again

To make it easier to use when transferring the additional dialing characters to extension 1,
necessary activities are divided by special

Circuit measures of the inventive arrangement connection point WZ (dial character), pr II, condensate

achieved that the assigning extension in each case sator C, S, y 1 2, -J-.
between the operations to be carried out on your 50th

Dial dial, after the end of the last debit, for example, extension 2 as the main unit

operation to be carried out receives a busy signal. number 2 is to be selected. At the

The invention described above is in the first fall of the S relay attracts Fe relay. While

the following explained in more detail with reference to the drawing. As the subsequent pull-in of the S-relay arises the

Embodiment is a relay private branch exchange 55 described above circuit for Ir relays. Falls

selected with a separate consultation rate. S-relay off for the second time, it becomes a circuit

After seizing the trunk, for example, formed by where Ir relay kept and Ilr relay to

Pressing the button and switching on the consultation set tightening is brought,
is in a known, not shown manner under

among other things brought the Y-relay to the pick-up point. For a 60 -. H> (I). Ir (II), 1; I, s I, ve, pr I 2, eb 1, y 11, + Pulse again wise at the extension whose number 1 is attracted to, the Hr relay remains on hold while Ir dial is selected. The pulse relay S drops off when the above circuit breaks through and lets the Fe relay, not shown, attract, so 65 contact s I is interrupted.

that when the S relay is _activated via the _ IIf / j ™ 2 r 1112 3 r III 2 4 / III 2 5 r II s I,

Contact results in the following circuit. ve '-br 12 ebl ν Il' +

- ~, lr, 2r III2, 3 r III2, 4 r III2, 5 r II, s 1, ve, pr 12, Fe relay drops out at the end of the pulse series. On the

eb I, y 11, -f. 70 w-contact is in the rest position, a pick-up

Circuit formed for Pr relay, in the II / relay, if it is authorized to act as a further call, determine-

remains held.

-, II / (III),
2 / III1, Pr,

2 r III 2, 3 / III 2, 4 / III 2, 5rII,

, fr I 2, eö I, y 11, +.

As soon as relay Pr is actuated, the latching relay IE and the relay Eb are energized in the following circuit:

-, Eb (II), IE (I), ed I 2, 6rhi 2, 2/12, ecll, fr III, y 11, +.

When the iJö relay is activated, the circuit for II / - and P / relay interrupted, so that their armature go into the rest position, while for the tightening of the Eiü relay the following circuit is closed:

-, Ed (II), ec III1, eb III 2, y 11, +.

If the £ & relay has dropped out with a delay, the holding circuit for the Ed relay is closed via its own contact ■ ed II1 and the contact of the relay G , not shown, which is in the working position.

-, Ed (II), ed II1, g, +.

The latching relay IE remains attracted in a known manner, even after its excitation winding I has become de-energized after the Pr and II / relays have dropped.

After completing the setting process explained above for determining the main unit, the transmitting a dialing character again, so that in connection with it the further call point can be chosen. If, for example, extension 3 is to be specified as a call point, the Number 3 was chosen. After the second pulse, the relay II / is in the working position, as described above. If the S-relay has dropped out again with the third pulse, the II / relay remains held while the III / relay picks up.

-, III / (I), II / (II), 2 / II, l / I, si, ve, fr 12, ebl, yl 1, +.

At the end of the series of pulses, the TV relay drops out, creating a holding and pick-up circuit for the lllr or P / relay via the w-contact, which is in the rest position.

-, III / (III), 3 / III2, 4 / III 2, 5 / II, 3 / Uli, Pr, ve, fr 12, ebl, yl 1, +.

If the contacts fr and 3 / are in the working position, the latching relay 2 W is made to pull in, while the relay Ec is made to drop out as a result of its winding II, which is excited in the opposite direction.

-, Ec (II), 2TF (I), ed Il 2, 3/12, ecll, frill, yll, -J _n ,

This interrupts the holding circuit for the 1 U relay. The extension 1 is inevitably thrown off by the exchange and consultation record and receives busy signals in a manner not shown via an internal connection record. In order to safely trigger the 1 C7 relay, the .E ^ relay is held in the following circuit during the delayed release of the G relay:

- Ed (II), ed II1, g, +.

All relays of the office and consultation set, with the exception of the activated latching relay, return to theirs Rest position back.

For the sake of clarity, only extensions 1 to 6 are shown as further call points in the drawing intended. In the same way, however, the drawing can be expanded so that each of the ten extensions can be laid.

With an incoming public call, among other things, the relay H, not shown, is brought to the pickup. After the 2C / relay has responded, the outside call is forwarded to extension 2, which has been set as the main unit, for example.

2U, terminal point 2, 3 e III, 2 e III, 1 e, w III,

If the telephone receiver has not been picked up at extension 2 within 30 to 40 seconds, so takes place in a known, not shown manner after activation of the PF relay call transfer to extension 3, which has been specified, for example, as a call point. The 2C / relay drops out, while the 3Ü7 relay over The following circuit receives pick-up excitation.

-, 3 U, terminal point 3 (via the contact of the latching relay 2W which is in the working position), 2wl, lw, w III, h, +.

The extension 3 is now called in the cycle of the office call and is in a known manner, not shown connected to the exchange line after picking up the telephone handset.

By connecting terminal points accordingly, each authorized extension can have priority to determine the main and secondary call point by means of a number disc or as an ordinary authorized official Intercom station can be switched without this option. So dials extension 4, for example, if she by connecting the terminal points 41 and 11 is provided as an ordinary call station, in the consultation state their connection number 4, among other things, the TF relay, but not the .Εδ relay is excited and so held until the inquiry status is canceled.

_ ψ, WiI, terminal points 11—41, 4 u Ul, 6 / III1, 4/11 (the relay IV / is in the working position after the number 4 has been selected), ec II, fr III, yll, + ·

In this case, there is no dropping process of the latching relays in the working position. The extension 4 the busy signal is transmitted via the winding of the supply and pulse relay S.

Terminal BZ (busy signal), w I, fr II, capacitor C, S, yl 2, +.

Claims (12)

Patent claims: 1.Circuit arrangement for telecommunications systems, in particular telephone private branch exchanges, in which the function of the main unit as well as that of the secondary call unit can also be assigned to other authorized branches with the help of the number disc, primarily for private branch exchanges with more than a total of nine branches, characterized in that the device switching the allocation is controlled by the branch making the allocation by dialing its own connection number, namely by the fact that via the contacts (u I and u III) of the exchange relay (U), which is, as is known, after the occupancy of the Trunk is in the working position, the relays (Eb and W) are operated, which by transmitting further series of current impulses sent by the assigning subscriber, a marking tion of the newly determined main office and the call point cause. 2. Circuit arrangement according to claim 1, characterized in that the control and the actuation the device switching the allocation by the allocating extension via a consultation record is made by this extension by seizing the trunk and then Pressing the signal button is assigned. 3. A circuit arrangement as claimed in claim 1, characterized in * °, that the actuation and the operation is made of the allocation of switching means by the given end extension has an inner connection set that is from this extension is by lifting their handset ¹ S. 4. Circuit arrangement according to one of the preceding claims, characterized in that the allocation of the function of the main unit and that of the onward call unit from ^{the allocating extension ao} after activating the device switching the allocation by dialing first the connection number of the main unit without additional actuation, then the connection number of the extension designated as the extension number is made. 5. Circuit arrangement according to one of the preceding Claims, characterized in that each desired extension has a corresponding Connection of bridge points either as preferred for making the allocation, as desired or can be set as this not privileged extension, namely by the fact that a relay is brought in the case of preferential branches, which controls the switching of the allocation Facility allows. 6. Circuit arrangement according to one of the preceding claims, characterized in that to record the ones made by a privileged extension with the help of its dial Allocation of the function of the main station and that of the call station, latching relays can be used. 7. Circuit arrangement according to one of the preceding claims, characterized in that, as soon as a preferred extension has its own connection number after it has been assigned accordingly has chosen, a relay is brought to the existing, made with the help of the dial Allocation of the function of the main station and that of the call station cancels, namely by the fact that the relays holding the allocation be thrown off by counter-excitation, whereby the excitation is prevented by appropriate measurement is that the relay that is not in the working position is activated by the ejection excitation to be brought. 8. Circuit arrangement according to one of the preceding claims, characterized in that, as long as there is no allocation of the functions of the main unit and that of the call center with the help of the dial is made, so even after cancellation of an existing allocation by dropping the Allocation holding relay after choosing the own connection number of the allocating extension, extension 1 as the main unit and another extension, for example extension 2, is switched as a further call point, so that an outside call cannot be lost. 9. Circuit arrangement according to one of the preceding claims, characterized in that an extension as soon as it has dialed its own connection number after it has been assigned, The dial tone receives if it has priority, but a busy signal if it does not have priority is. 10. Circuit arrangement according to one of the preceding claims, characterized in that the branch to be allocated according to the choice of the connection number determining the allocation of the main branch Dialing characters are given, even if the call point is then dialed by a connection number can be allocated. 11. Circuit arrangement according to one of the preceding claims, characterized in that the assigning extension after dialing a connection number determining an assignment busy tone if no further allocation is possible afterwards. 12. Circuit arrangement according to one of the preceding claims, characterized in that the trunk line is automatically activated again after the entire allocation process has been completed will, d. H. after the end of the choice of the connection number determining the allocation of the call point or, if the option of allocating the call point should not be provided, after Termination of the choice of the connection number determining the allocation of the main office. 1 sheet of drawings © 709 877/90 1.58