AT71464B - Circuit arrangement for telephone systems in which several subscriber stations can be connected directly to one and the same exchange line by moving a switch. - Google Patents

Circuit arrangement for telephone systems in which several subscriber stations can be connected directly to one and the same exchange line by moving a switch.

Info

Publication number
AT71464B
AT71464B AT71464DA AT71464B AT 71464 B AT71464 B AT 71464B AT 71464D A AT71464D A AT 71464DA AT 71464 B AT71464 B AT 71464B
Authority
AT
Austria
Prior art keywords
switch
exchange line
moving
connected directly
circuit arrangement
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT71464B publication Critical patent/AT71464B/en

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Description

  

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  Schaltungsanordnung für Fernsprechanlagen, bei denen sich mehrere Teilnehmerstellen durch Bewegen eines Schalters unmittelbar an eine und dieselbe Amtsleitung anschalten 
 EMI1.1 
 stellen, ist Vorsorge zu treffen, dass bei Belegung der Amtsleitung durch eine Nebenstelle der Anschluss einer zweiten Nebenstelle an die Amtsleitung verhindert wird. Dies geschieht beispielsweise durch Sperrelais, die zur   Wirkung kommen, wenn eine zweite Nebenstelle   sich auf eine bereits belegte Amtsleitung einzustellen versucht, obwohl durch Signale angegeben ist. dass die Amtsleitung belegt ist. Die Erfindung betrifft nun eine besondere Schaltung für das Sperrelais der Hauptstelle. welche zur Aufnahme der vom Amte kommenden Anrufe bestimmt ist.

   Dieses Sperrelais ist in den Stromkreis der Besetztzeichen der Sprechstellen   eingeschätzt und   wird beim Belegen der Amtsleitung von seiten einer gewünschten Nebenstelle erregt. wobei es einerseits die Verbindung der Hauptstelle mit der Sprechleitung aufhebt und andererseits den Stromkreis für die Sperrelais der anderenNebenstellenvorbereitet. 



   Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt für eine 
 EMI1.2 
   schliesslich   Kontakt 12 geschlossen wird. Durch den letztgenannten Kontakt wird Erde an den   oben genannten Stromkreis des Relais 7t* gelegt,   so dass dieses erregt wird und bei 21 die Sprechschleife der   Hal1ptst811e   II unterbricht, während bei 16 der Stromkreis für die Sperrelais   r'...   der anderen Nebenstellen N2 ... vorbereitet wird. 



   Wenn die Nebenstello N4 ohne Rücksicht auf das Signal S3 durch Umlegen des 
 EMI1.3 
 

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 unterbrochen und der Kontakt 19'geschlossen. Hiedurch ist der Sprechapparat Sp'der   Nebenstelle N2 kurzgeschlossen   und von der Leitung 2, 6'abgeschaltet, so dass sich die Nebenstelle N2 weder an die Amtsleitung   1,   2 anschliessen, noch das von der Nebenstelle NI geführte Gespräch mithören kann. 



   Wenn eine Nebenstelle NI selbst eine Verbindung mit der Amtsleitung herstellen will, so treten im wesentlichen die obenbeschriebenen Schaltvorgänge ein. Ein Unterschied 
 EMI2.1 
 der Hauptteile an die Nehenstelle der Schalter T der   Hauptstelle   wieder in die Ruhelage   zurückgebracht wird.  



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  Circuit arrangement for telephone systems in which several subscriber stations can be switched on directly to one and the same exchange line by moving a switch
 EMI1.1
 care must be taken to prevent a second extension from being connected to the exchange line if the exchange line is occupied by an extension. This is done, for example, by blocking relays, which come into effect when a second extension tries to adjust to an outside line that is already in use, although signals are indicated. that the trunk is busy. The invention now relates to a special circuit for the locking relay of the main unit. which is intended to record incoming calls from the office.

   This blocking relay is included in the circuit of the busy signal of the intercom and is energized when the trunk line is seized by a desired extension. on the one hand it cancels the connection of the main unit with the speech line and on the other hand it prepares the circuit for the blocking relays of the other extensions.



   In the drawing, an embodiment of the invention is shown for a
 EMI1.2
   Finally contact 12 is closed. The last-mentioned contact applies ground to the above-mentioned circuit of the relay 7t *, so that it is excited and at 21 the speech loop of the Hal1ptst811e II is interrupted, while at 16 the circuit for the blocking relays r '... of the other extensions N2. .. is being prepared.



   If the extension N4 regardless of the signal S3 by switching the
 EMI1.3
 

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 interrupted and the contact 19 'closed. As a result, the speech set Sp 'of the extension N2 is short-circuited and disconnected from the line 2, 6', so that the extension N2 can neither connect to the exchange line 1, 2 nor overhear the conversation conducted by the extension NI.



   If an extension NI wants to establish a connection with the exchange line itself, the switching processes described above essentially occur. A difference
 EMI2.1
 the main parts at the next station the switch T of the main station is brought back into the rest position.

 

Claims (1)

EMI2.2 Schaltungsanordnung für Fernsprechanlagen, bei denen sich mehrere Teilnehmerstellen durch Bewegen eines Schalters unmittelbar an eine und dieselbe Amtsleitung anschalten köunen (Geselischaftsleitungen, Hauptanschluss und Nebenstellen), dadurch gekennzeichnet, dass das Sperrelais (R) der die vom Amt kommenden Anrufe annehmenden Stelle (Hauptstelle) in dem Stromkreis (Erde, 12, 13, R, S1, 14, 15, S2, S3. Batterie, Erde) der Besetzt- EMI2.3 Ilauptstelle (H) den Stromkreis (Erde, 10',)-', 11', 17, 1', Batterie, Erde) für die Sperrrelais der übrigen Sprechstellen (N1, N2) in an sich bekannter Weise vorbereitet. EMI2.2 Circuit arrangement for telephone systems in which several subscriber stations can be connected directly to one and the same exchange line by moving a switch (company lines, main connection and extensions), characterized in that the blocking relay (R) of the station accepting calls from the office (main station) is in the circuit (earth, 12, 13, R, S1, 14, 15, S2, S3. battery, earth) of the occupied EMI2.3 Ilauptstelle (H) prepares the circuit (earth, 10 ',) -', 11 ', 17, 1', battery, earth) for the blocking relays of the other call stations (N1, N2) in a manner known per se.
AT71464D 1913-11-12 1914-11-07 Circuit arrangement for telephone systems in which several subscriber stations can be connected directly to one and the same exchange line by moving a switch. AT71464B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE71464X 1913-11-12

Publications (1)

Publication Number Publication Date
AT71464B true AT71464B (en) 1916-04-10

Family

ID=5635803

Family Applications (1)

Application Number Title Priority Date Filing Date
AT71464D AT71464B (en) 1913-11-12 1914-11-07 Circuit arrangement for telephone systems in which several subscriber stations can be connected directly to one and the same exchange line by moving a switch.

Country Status (1)

Country Link
AT (1) AT71464B (en)

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