AT43912B - Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches. - Google Patents

Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.

Info

Publication number
AT43912B
AT43912B AT43912DA AT43912B AT 43912 B AT43912 B AT 43912B AT 43912D A AT43912D A AT 43912DA AT 43912 B AT43912 B AT 43912B
Authority
AT
Austria
Prior art keywords
line
office
circuit arrangement
branch
changeover switches
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 AT43912B publication Critical patent/AT43912B/en

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 




   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 
 EMI2.1

Claims (1)

<Desc/Clms Page number 3> Signalapparaten (G2) an der Hauptstelle (II) geschlossen hält, während er beim Unterbrechen des Stromes an der mit dem Amte verbundenen Sprechstelle (N) eine vorübergehende Abschaltung dieser Abzweigungen bewirkt, damit nicht etwa bei Gesprächsschluss ein Zweigstrom über eine EMI3.1 freien Gruppenwähler verbunden wird, dadurch gekennzeichnet, dass die gleichzeitige Erregung des Differentialrelais (D) an der Hauptstelle (H) sowie eines in bekannter Weise mit je einer Wicklung (rl r2) in jeden Leitungszweig (ci, b) geschalteten Differentialelektromagneten (R) im Amte erst beim Einstellen des Nummernschalters durch Erdung der Leitung (a) an der mit der Amtsleitung (a, b) verbundenen Sprechstelle (N1) erfolgt, zu dem Zwecke, <Desc / Clms Page number 3> Keeps signaling devices (G2) at the main station (II) closed, while when the current is interrupted at the intercom station (N) connected to the office, it causes these branches to be temporarily switched off, so that a branch current does not pass through a branch at the end of the call EMI3.1 free group selector is connected, characterized in that the simultaneous excitation of the differential relay (D) at the main unit (H) and a differential electromagnet (R) connected in a known manner with one winding (rl r2) in each branch (ci, b) in the The exchange takes place only when the number switch is set by earthing the line (a) at the intercom (N1) connected to the exchange line (a, b), for the purpose die Zeit der Sperrung der Leitung für die übrigen Nebenstellen (N2) bezw. des Gruppenwählers im Amte für andere Leitungen abzukürzen. the time of the blocking of the line for the other extensions (N2) respectively. of the group selector in the office for other lines. 4. Anordnung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass das Schlusszeichen- EMI3.2 zur Amtsleitung (a, b) in Reihe mit dem Schlusszeichen (S) einen Selbstunterbrecherwecker (TV) einschaltet, der durch die wiederholten Unterbrechungen der Leitung die Rückkehr der Wähler des Amtes in die Ruhelage sichert. 4. Arrangement according to claim 1 and 2, characterized in that the final character EMI3.2 to the exchange line (a, b) in series with the final character (S) switches on a self-interrupting alarm clock (TV), which ensures the return of the voters of the office to the rest position through the repeated interruptions of the line.
AT43912D 1908-12-23 1909-11-12 Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches. AT43912B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE43912X 1908-12-23

Publications (1)

Publication Number Publication Date
AT43912B true AT43912B (en) 1910-09-10

Family

ID=5624496

Family Applications (1)

Application Number Title Priority Date Filing Date
AT43912D AT43912B (en) 1908-12-23 1909-11-12 Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.

Country Status (1)

Country Link
AT (1) AT43912B (en)

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