HK39579A - Circuit arrangement for telephone subset - Google Patents

Circuit arrangement for telephone subset

Info

Publication number
HK39579A
HK39579A HK395/79A HK39579A HK39579A HK 39579 A HK39579 A HK 39579A HK 395/79 A HK395/79 A HK 395/79A HK 39579 A HK39579 A HK 39579A HK 39579 A HK39579 A HK 39579A
Authority
HK
Hong Kong
Prior art keywords
circuit arrangement
telephone subset
subset
telephone
arrangement
Prior art date
Application number
HK395/79A
Other languages
English (en)
Inventor
J S Ghalley
B A Bidwell
Original Assignee
Standard Telephones Cables Ltd
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 Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of HK39579A publication Critical patent/HK39579A/xx

Links

Classifications

    • 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)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
HK395/79A 1974-10-11 1979-06-21 Circuit arrangement for telephone subset HK39579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44059/74A GB1521468A (en) 1974-10-11 1974-10-11 Circuit arrangement for telephone subset

Publications (1)

Publication Number Publication Date
HK39579A true HK39579A (en) 1979-06-29

Family

ID=10431564

Family Applications (1)

Application Number Title Priority Date Filing Date
HK395/79A HK39579A (en) 1974-10-11 1979-06-21 Circuit arrangement for telephone subset

Country Status (5)

Country Link
FR (1) FR2287813A1 (enExample)
GB (1) GB1521468A (enExample)
HK (1) HK39579A (enExample)
IE (1) IE41749B1 (enExample)
ZA (1) ZA756365B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451690A1 (fr) * 1979-03-16 1980-10-10 Horlogerie Photograph Fse Perfectionnements aux circuits de postes telephoniques a clavier
FR2505586A1 (fr) * 1981-05-05 1982-11-12 Thomson Csf Mat Tel Poste telephonique a clavier
FR2508744A1 (fr) * 1981-06-26 1982-12-31 Thomson Csf Mat Tel Poste telephonique a clavier et a ecoute amplifiee

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1394148A (en) * 1972-09-11 1975-05-14 Int Standard Electric Corp Push-button telphone subset

Also Published As

Publication number Publication date
FR2287813A1 (fr) 1976-05-07
IE41749L (en) 1976-04-11
GB1521468A (en) 1978-08-16
FR2287813B1 (enExample) 1979-01-05
ZA756365B (en) 1976-09-29
IE41749B1 (en) 1980-03-12

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