AT73843B - Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires. - Google Patents

Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires.

Info

Publication number
AT73843B
AT73843B AT73843DA AT73843B AT 73843 B AT73843 B AT 73843B AT 73843D A AT73843D A AT 73843DA AT 73843 B AT73843 B AT 73843B
Authority
AT
Austria
Prior art keywords
test
takes place
dialers
connections
telephone systems
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 AT73843B publication Critical patent/AT73843B/en

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
  • Telephone Function (AREA)

Description

  

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

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 
 EMI2.2 
 

 <Desc/Clms Page number 3> 

 
 EMI3.1 
 

 <Desc/Clms Page number 4> 

 
 EMI4.1 
 auch über die Wicklung   11 des RelaisA2   an die b"-Ader angelegt. über den Steuerschalterarm 74. 



  Über den Steuerschalterarm 75 des Gruppenwählers ist auch hier die Brücke über die beiden Leitungszweige vervollständigt, so dass die Verbindungsleitung ausgeglichen ist. Die Prüfung selbst erfolgt in bekanntet Weise. Ist die   angerufene Teilnehmerstelle frei, so spricht   das Relais Pan, Öffnet den Kontakt 76 und bewirkt damit das Abfallen des Ankers des Steuerschaltermagneten S1. 



  Die Arme des Schalters gehen in die vierte Stellung über, in der über den Arm 77 das Läuterelais L erregt wird (Erde, 46, L, 77, 88, Erde). Uber 48 und 49 legt das Relais L   Rufstrom   an die Leitung. Wenn sich der Teilnehmer meldet, spricht das Relais Y an und unterbricht bei 46 den Stromkreis des Relais L und bei 78 den des Magneten S1. Infolgedessen gehen die Steuerschalterarme in die fünfte Stellung über, welche die Durchsprechstellung ist. Die Auslösung der Verbindung erfolgt in der gleichen Weise wie bei dem Ausführungsbeispiele der Fig. 1. 



   PATENT-ANSPRÜCHE :
1. Prüfschaltung für Fernsprechanlagen, bei welchen Verbindungen über   Wähler   hergestellt werden und die Prüfung über Sprechadern stattfindet, nach Patent Nr. 70414, dadurch gekenn-   zeichnet, da ss bei Auffinden   einer freien Leitung der Prüfstrom über die hintereinandergeschalteten Leitungszweige   zustandekommt,   worauf die Einstellung der Wähler erfolgt, indem eine oder beide Sprechadern mit einer nicht für die Prüfung gebrauchten Leitung (Erde) zusammengeschaltet werden. um das Auftreten eines Fehlstromes für das Prüfrelais parallel   prüfender   
 EMI4.2 




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

 <Desc / Clms Page number 2>

 
 EMI2.1
 
 EMI2.2
 

 <Desc / Clms Page number 3>

 
 EMI3.1
 

 <Desc / Clms Page number 4>

 
 EMI4.1
 also applied to the b ″ wires via winding 11 of relay A2. via control switch arm 74.



  The bridge over the two line branches is also completed here via the control switch arm 75 of the group selector, so that the connecting line is balanced. The test itself takes place in a known manner. If the called subscriber station is free, the Pan relay speaks, opens the contact 76 and thus causes the armature of the control switch magnet S1 to drop.



  The arms of the switch go into the fourth position, in which the ringer relay L is excited via arm 77 (earth, 46, L, 77, 88, earth). The relay L applies ringing current to the line via 48 and 49. When the subscriber answers, the relay Y responds and interrupts the circuit of the relay L at 46 and that of the magnet S1 at 78. As a result, the control switch arms go into the fifth position, which is the talk-through position. The connection is released in the same way as in the exemplary embodiment in FIG. 1.



   PATENT CLAIMS:
1. Test circuit for telephone systems, in which connections are made via dialers and the test takes place via voice wires, according to patent no. 70414, characterized in that when a free line is found, the test current is generated via the series-connected line branches, whereupon the setting of the Voting is done by connecting one or both speech wires to a line (earth) that is not used for the test. parallel testing for the occurrence of a fault current for the test relay
 EMI4.2
AT73843D 1913-06-26 1915-01-12 Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires. AT73843B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE70414X 1913-06-26

Publications (1)

Publication Number Publication Date
AT73843B true AT73843B (en) 1917-10-10

Family

ID=5635431

Family Applications (2)

Application Number Title Priority Date Filing Date
AT70414D AT70414B (en) 1913-06-26 1914-06-15 Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires.
AT73843D AT73843B (en) 1913-06-26 1915-01-12 Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT70414D AT70414B (en) 1913-06-26 1914-06-15 Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires.

Country Status (1)

Country Link
AT (2) AT70414B (en)

Also Published As

Publication number Publication date
AT70414B (en) 1915-11-10

Similar Documents

Publication Publication Date Title
AT73843B (en) Test circuit for telephone systems in which connections are made via dialers and the test takes place via voice wires.
AT75743B (en) Circuit arrangement for automatically or semi-automatically operated telephone systems.
AT69909B (en) Secret voice circuit for line dialer telephone systems.
DE682628C (en) Circuit arrangement for telephone systems with dialer operation and participants with different traffic rights
AT131500B (en) Circuit arrangement for telephone systems with several exchanges.
AT128223B (en) Circuit arrangement for telephone systems.
AT68976B (en) Telephone system whose subscriber lines are divided according to the number of calls.
AT76920B (en) Circuit arrangement for self-connecting telephone systems.
DE562412C (en) Circuit arrangement for telephone systems with dialer operation, in which only preferred subscribers can be connected to busy lines without special switching means for the caller
AT116721B (en) Circuit arrangement for counting connections in automatic telephone systems.
AT166861B (en) Circuit arrangement for company lines in telecommunication systems, in particular telephone systems
DE599863C (en) Circuit arrangement for telephone systems for the optional connection of a connection line to one of several acoustic signals transmitting transmitter stations
AT64677B (en) Circuit arrangement for automatic or semi-automatic telephone systems.
AT76556B (en) Circuit arrangement for telephone systems with dialer operation.
AT69521B (en) Circuit arrangement for voters in self-connecting telephone exchanges.
AT47789B (en) Circuit arrangement for telephone exchanges with automatic subscriber calls.
AT111469B (en) Circuit arrangement for telephone systems with voter operation and company lines.
AT143935B (en) Circuit arrangement for counting the conversation time in self-connecting telephone systems.
AT208411B (en) Circuit for telephone exchanges with relay selectors
AT91190B (en) Circuit arrangement for telephone systems in which the connections are made via automatic dialers with the assistance of an officer.
AT39902B (en) Automatic extension switching system.
AT71461B (en) Circuit arrangement for telephone systems in which connections are established via call seekers.
AT134934B (en) Arrangement for company management.
AT100399B (en) Selection.
AT80950B (en) Line dialer system without common return line. Line dialer system without common return line.