CH556623A - TELEPHONE. - Google Patents

TELEPHONE.

Info

Publication number
CH556623A
CH556623A CH1332572A CH1332572A CH556623A CH 556623 A CH556623 A CH 556623A CH 1332572 A CH1332572 A CH 1332572A CH 1332572 A CH1332572 A CH 1332572A CH 556623 A CH556623 A CH 556623A
Authority
CH
Switzerland
Prior art keywords
telephone
Prior art date
Application number
CH1332572A
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
Publication of CH556623A publication Critical patent/CH556623A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • 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
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Relay Circuits (AREA)
  • Interface Circuits In Exchanges (AREA)
CH1332572A 1971-09-13 1972-09-12 TELEPHONE. CH556623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4255071 1971-09-13

Publications (1)

Publication Number Publication Date
CH556623A true CH556623A (en) 1974-11-29

Family

ID=10424913

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1332572A CH556623A (en) 1971-09-13 1972-09-12 TELEPHONE.

Country Status (10)

Country Link
AR (1) AR193433A1 (en)
AT (1) AT336691B (en)
AU (1) AU4603872A (en)
BE (1) BE788732A (en)
CH (1) CH556623A (en)
DE (1) DE2243994A1 (en)
FR (1) FR2153982A5 (en)
GB (1) GB1318858A (en)
IT (1) IT967355B (en)
ZA (1) ZA724726B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238225A1 (en) * 1972-08-03 1974-02-14 Itt Ind Gmbh Deutsche OPERATING WIRING OF A TELEPHONE SET
GB1394148A (en) * 1972-09-11 1975-05-14 Int Standard Electric Corp Push-button telphone subset
DE3340396A1 (en) * 1983-11-09 1985-05-15 Hagenuk GmbH, 2300 Kiel CIRCUIT ARRANGEMENT FOR A CALL SIGNAL GENERATOR

Also Published As

Publication number Publication date
AU4603872A (en) 1974-03-07
BE788732A (en) 1973-03-13
IT967355B (en) 1974-02-28
DE2243994A1 (en) 1973-03-22
AT336691B (en) 1977-05-25
FR2153982A5 (en) 1973-05-04
ATA776172A (en) 1976-09-15
AR193433A1 (en) 1973-04-23
GB1318858A (en) 1973-05-31
ZA724726B (en) 1973-03-28

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Legal Events

Date Code Title Description
PL Patent ceased