AT115142B - Circuit arrangement for the optional connection of one of two subscriber stations located on a common line. - Google Patents

Circuit arrangement for the optional connection of one of two subscriber stations located on a common line.

Info

Publication number
AT115142B
AT115142B AT115142DA AT115142B AT 115142 B AT115142 B AT 115142B AT 115142D A AT115142D A AT 115142DA AT 115142 B AT115142 B AT 115142B
Authority
AT
Austria
Prior art keywords
line
circuit arrangement
common line
subscriber stations
stations located
Prior art date
Application number
Other languages
German (de)
Inventor
Ernst Wehren
Original Assignee
Ernst Wehren
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ernst Wehren filed Critical Ernst Wehren
Application granted granted Critical
Publication of AT115142B publication Critical patent/AT115142B/en

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  • Interface Circuits In Exchanges (AREA)

Description

  

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  Schaltungsanordnung für den wahlweisen Anschluss einer von zwei an einer gemein- samen   Leitung liegenden Teilnehmerstellen.   
 EMI1.1 
 

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   Will beispielsweise Stelle 7 rufen, so wird   zu'rst dr   Hörer abgenommen und dann   durch   die Erdverbindung der Gabel die a-Leitung einen Augenblick geerdet. Das Relais   Lrl wird   erregt und hält sich über seinen rechten Kontakt. Der linke Kontakt von Lr1 erregt den Anrufsucher, der über seinen d-Arm prüft. Findet der Arm eine freie Leitung, so erhält das Relais RI Strom von bestimmter Polarität über die Arme a, b des Anrufsuchers   AS.   Der Anker des Relais RI zieht an und die Stelle ist eingeschaltet. 



  Sie kann wählen und selbsttätig verbunden werden, wie wenn es sich um einen unabhängigen Teilnehmer des Amtes handelte. Während dieser Zeit kann die Stelle II sich nicht einschalten, weil nach der Wahl das gemeinsam für beide Teilnehmer arbeitende Besetztrelais Zr das Relais Tr veranlasst hat, seinen Anker anzuziehen, wodurch die Entstehung eines Anrufstromkreises auf beiden Leitungen der Schleife unmöglich gemacht ist. 



   Bei den ankommenden Verbindungen bekommt die Schleifenleitung durch die jedem Teilnehmer entsprechenden Kontakte des Leitungswählers die gewünschte Polarität. Nach erfolgter Verbindung zieht das Relais Tr an und verhindert, dass das Abschaltrelais der nicht gerufenen Stelle anspricht. Es besteht also für diese keine Möglichkeit, sich einzuschalten. 



   Während des Gespräches kann der nicht beteiligte Teilnehmer weder hören noch durch Abheben seines Hörers stören. Die vorübergehende Erdung der einen oder andern Leitung verstärkt bloss den Anzug des die Verbindung des andern Teilnehmers haltenden Relais und kann unmöglich zum Zusammenfallen der Verbindung führen. 



   PATENT-ANSPRÜCHE : 
 EMI2.1 
 leitung erdet.



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  Circuit arrangement for the optional connection of one of two subscriber stations located on a common line.
 EMI1.1
 

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   If, for example, station 7 is to be called, the receiver is first picked up and then the a-line is earthed for a moment through the earth connection of the fork. The relay Lrl is energized and holds through its right contact. The left contact of Lr1 excites the caller who is checking over his d-arm. If the arm finds a free line, the relay RI receives current of a certain polarity via the arms a, b of the caller AS. The armature of the relay RI picks up and the point is switched on.



  She can choose and be automatically connected as if it were an independent participant in the office. During this time, station II cannot switch on because, after the election, the occupying relay Zr, which works jointly for both subscribers, has caused relay Tr to attract its armature, which makes it impossible for a call circuit to arise on both lines of the loop.



   In the case of incoming connections, the loop line is given the desired polarity by the contacts of the line selector corresponding to each participant. After the connection has been established, the relay Tr picks up and prevents the switch-off relay of the station not being called from responding. So there is no way for them to get involved.



   During the call, the participant who is not involved can neither hear nor disturb by lifting the handset. The temporary grounding of one or the other line merely strengthens the tightening of the relay holding the connection of the other subscriber and cannot possibly lead to the connection collapsing.



   PATENT CLAIMS:
 EMI2.1
 line grounds.

Claims (1)

2. Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Linienleitung fss, b) im Amte einerseits zu den Kontaktbänken der Anrufsucher (AS) und Leitungswähler (LW), anderseits zu Linienrelais 7, 7 führt, die bei abgehenden Verbindungen erregt werden und hiebei die Einschaltung der zugehörigen Abschaltrelais (RI, RII) einleiten. 2. Circuit arrangement according to claim 1, characterized in that the line line fss, b) leads in the office on the one hand to the contact banks of the call seekers (AS) and line selector (LW), on the other hand to line relays 7, 7, which are energized for outgoing connections and hiebei initiate activation of the associated cut-off relays (RI, RII).
AT115142D 1927-05-07 1927-05-07 Circuit arrangement for the optional connection of one of two subscriber stations located on a common line. AT115142B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT115142T 1927-05-07

Publications (1)

Publication Number Publication Date
AT115142B true AT115142B (en) 1929-11-25

Family

ID=3629147

Family Applications (1)

Application Number Title Priority Date Filing Date
AT115142D AT115142B (en) 1927-05-07 1927-05-07 Circuit arrangement for the optional connection of one of two subscriber stations located on a common line.

Country Status (1)

Country Link
AT (1) AT115142B (en)

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