AT256945B - Circuit arrangement for receiving key dialing signals in telecommunication systems, in particular telephone switching systems - Google Patents

Circuit arrangement for receiving key dialing signals in telecommunication systems, in particular telephone switching systems

Info

Publication number
AT256945B
AT256945B AT398266A AT398266A AT256945B AT 256945 B AT256945 B AT 256945B AT 398266 A AT398266 A AT 398266A AT 398266 A AT398266 A AT 398266A AT 256945 B AT256945 B AT 256945B
Authority
AT
Austria
Prior art keywords
systems
circuit arrangement
telephone switching
particular telephone
receiving key
Prior art date
Application number
AT398266A
Other languages
German (de)
Original Assignee
Telefunken Patent
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 Telefunken Patent filed Critical Telefunken Patent
Application granted granted Critical
Publication of AT256945B publication Critical patent/AT256945B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
AT398266A 1965-05-04 1966-04-27 Circuit arrangement for receiving key dialing signals in telecommunication systems, in particular telephone switching systems AT256945B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965T0028513 DE1247411B (en) 1965-05-04 1965-05-04 Circuit arrangement for the reception of touch-dial signals in telecommunications, in particular telephone switching systems

Publications (1)

Publication Number Publication Date
AT256945B true AT256945B (en) 1967-09-11

Family

ID=7554226

Family Applications (1)

Application Number Title Priority Date Filing Date
AT398266A AT256945B (en) 1965-05-04 1966-04-27 Circuit arrangement for receiving key dialing signals in telecommunication systems, in particular telephone switching systems

Country Status (2)

Country Link
AT (1) AT256945B (en)
DE (1) DE1247411B (en)

Also Published As

Publication number Publication date
DE1247411B (en) 1967-08-17

Similar Documents

Publication Publication Date Title
CH528193A (en) Circuit arrangement for a telecommunications, in particular telephone switching system
CH467567A (en) Circuit arrangement in telecommunications, in particular telephone switching systems
AT260310B (en) Circuit arrangement for telecommunication switching systems, in particular telephone switching systems with switching networks
AT274054B (en) Circuit arrangement for centrally controlled telecommunications systems, in particular telephone switching systems
AT256945B (en) Circuit arrangement for receiving key dialing signals in telecommunication systems, in particular telephone switching systems
CH413923A (en) Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
AT247923B (en) Arrangement for the transmission of multi-frequency code keypad dialing characters in telecommunication systems, in particular telephone systems
CH441446A (en) Circuit arrangement for telecommunications, in particular telephone extension systems with dialing stations with earth buttons
CH411045A (en) Subscriber circuit for telecommunications, in particular telephone systems
CH445574A (en) Circuit arrangement for telecommunications switching systems, in particular telephone systems with switching fields
CH537134A (en) Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, for four-wire connection through switching via coupling fields
CH452617A (en) Circuit arrangement for telecommunications switching systems, in particular for telephone extension systems, with dial memories
AT290633B (en) Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
AT281128B (en) Circuit arrangement for telecommunications switching systems, in particular telephone branch exchange systems
AT246233B (en) Circuit arrangement for telecommunications, in particular telephone systems
CH453437A (en) Circuit arrangement for telecommunication switching systems, in particular telephone systems
CH418408A (en) Circuit arrangement for a subscriber station with key selection in telecommunications, in particular telephone systems
AT294196B (en) Circuit arrangement for telecommunication switching systems, in particular telephone dialing systems with indirectly adjustable coupling devices
AT294198B (en) Circuit arrangement for telecommunications, in particular telephone switching systems
CH437436A (en) Telecommunications system, in particular telephone switching system, with a circuit arrangement for receiving tone-frequency code touch-tone dialing signals
AT262389B (en) Circuit arrangement for triggering tone-frequency call signals in subscriber stations of telecommunication systems, in particular telephone systems
CH427920A (en) Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with multi-stage switching matrices
AT286367B (en) Circuit arrangement for transmission in telecommunications, in particular telephone switching systems
AT251658B (en) Circuit arrangement for the evaluation of combination dialing characters sent in telecommunication systems, in particular telephone systems
AT271576B (en) Subscriber circuit for telecommunications, in particular teleprinter and telephone systems