AT9921B - Circuit arrangement for deactivating the call signs in telephone exchanges. - Google Patents

Circuit arrangement for deactivating the call signs in telephone exchanges.

Info

Publication number
AT9921B
AT9921B AT9921DA AT9921B AT 9921 B AT9921 B AT 9921B AT 9921D A AT9921D A AT 9921DA AT 9921 B AT9921 B AT 9921B
Authority
AT
Austria
Prior art keywords
deactivating
circuit arrangement
telephone exchanges
call signs
signs
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 AT9921B publication Critical patent/AT9921B/en

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
  • Prepayment Telephone Systems (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 




   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 

 <Desc / Clms Page number 2>

 
 EMI2.1
AT9921D 1900-12-05 1901-10-17 Circuit arrangement for deactivating the call signs in telephone exchanges. AT9921B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT7482T 1900-12-05
AT9921T 1901-10-17

Publications (1)

Publication Number Publication Date
AT9921B true AT9921B (en) 1902-11-25

Family

ID=25593811

Family Applications (1)

Application Number Title Priority Date Filing Date
AT9921D AT9921B (en) 1900-12-05 1901-10-17 Circuit arrangement for deactivating the call signs in telephone exchanges.

Country Status (1)

Country Link
AT (1) AT9921B (en)

Similar Documents

Publication Publication Date Title
AT9921B (en) Circuit arrangement for deactivating the call signs in telephone exchanges.
AT9919B (en) Circuit arrangement for deactivating the call signals on telephone exchanges.
AT9900B (en) Self-collecting telephone station.
AT25281B (en) Circuit for telephone exchanges with distribution system.
AT14516B (en) Circuit arrangement for operating telephone auxiliary switching points.
AT9313B (en) Self-collecting telephone station.
AT10615B (en) Printing block.
AT8905B (en) Advertising transparency.
AT25888B (en) Circuit arrangement for telephone exchanges.
AT14369B (en) Electric block signaling device.
AT25872B (en) Circuit for telephone exchanges with automatic switching on and off of the ringing current source.
AT74825B (en) Telephone switching system.
AT24748B (en) Switching of the interrogation device in telephone exchanges.
AT72206B (en) Circuit arrangement for call seekers in telephone systems.
AT68425B (en) Circuit arrangement for telephone exchanges with automatic call distribution.
AT49071B (en) Switching device for setting voters in automatic telephone exchanges.
AT6913B (en) Logarithmic calculator.
AT66856B (en) Telephone amplification apparatus.
AT9455B (en) Conveyor frame.
AT29402B (en) Automatic telephone switchboard.
AT9911B (en) Circuit arrangement for telephone centers with main and sub-stations.
AT49072B (en) Circuit for setting and switching dialers in automatic telephone systems.
AT14318B (en) Combustion system.
AT70550B (en) Circuit arrangement for telephone exchanges with automatic call distribution.
AT62688B (en) Circuit arrangement for telephone exchanges with automatic call distribution.