AT281133B - Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connected - Google Patents

Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connected

Info

Publication number
AT281133B
AT281133B AT634566A AT634566A AT281133B AT 281133 B AT281133 B AT 281133B AT 634566 A AT634566 A AT 634566A AT 634566 A AT634566 A AT 634566A AT 281133 B AT281133 B AT 281133B
Authority
AT
Austria
Prior art keywords
subscriber sets
reception
audio frequency
frequency signals
switching system
Prior art date
Application number
AT634566A
Other languages
German (de)
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of AT281133B publication Critical patent/AT281133B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephonic Communication Services (AREA)
AT634566A 1965-09-10 1966-07-04 Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connected AT281133B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965ST024376 DE1264519B (en) 1965-09-10 1965-09-10 Data transmission in a telephone exchange to which subscriber sets and subscriber sets with a number switch set up for tone-frequency touch dialing are connected

Publications (1)

Publication Number Publication Date
AT281133B true AT281133B (en) 1970-05-11

Family

ID=7460089

Family Applications (1)

Application Number Title Priority Date Filing Date
AT634566A AT281133B (en) 1965-09-10 1966-07-04 Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connected

Country Status (6)

Country Link
AT (1) AT281133B (en)
CH (1) CH453438A (en)
DE (1) DE1264519B (en)
ES (1) ES330869A1 (en)
NL (1) NL6612563A (en)
SE (1) SE344151B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE451422B (en) * 1985-06-27 1987-10-05 Anders Edvard Trell PROCEDURE FOR SIGNAL PROCESSING AT A PORT-PHONE PLANT INTENDED TO BE CONNECTED TO AN GENERAL PHONE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074669B (en) * 1957-01-08 1960-02-04 International Standard Electric Corporation, New York, N. Y. (V.St.A.) Transistor oscillator arrangement for generating a subscriber's own frequency for identifying the calling subscriber in telephone systems

Also Published As

Publication number Publication date
ES330869A1 (en) 1967-06-16
NL6612563A (en) 1967-03-13
SE344151B (en) 1972-03-27
CH453438A (en) 1968-06-14
DE1264519B (en) 1968-03-28

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee