ZA771266B - Improvements in or relating to telephone apparatus - Google Patents

Improvements in or relating to telephone apparatus

Info

Publication number
ZA771266B
ZA771266B ZA00771266A ZA771266A ZA771266B ZA 771266 B ZA771266 B ZA 771266B ZA 00771266 A ZA00771266 A ZA 00771266A ZA 771266 A ZA771266 A ZA 771266A ZA 771266 B ZA771266 B ZA 771266B
Authority
ZA
South Africa
Prior art keywords
relating
telephone apparatus
telephone
Prior art date
Application number
ZA00771266A
Inventor
B Athey
Original Assignee
Gen Electric Co 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 Gen Electric Co Ltd filed Critical Gen Electric Co Ltd
Publication of ZA771266B publication Critical patent/ZA771266B/en

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)
  • Interface Circuits In Exchanges (AREA)
ZA00771266A 1976-03-10 1977-03-03 Improvements in or relating to telephone apparatus ZA771266B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9609/76A GB1578127A (en) 1976-03-10 1976-03-10 Telephone apparatus

Publications (1)

Publication Number Publication Date
ZA771266B true ZA771266B (en) 1978-01-25

Family

ID=9875286

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00771266A ZA771266B (en) 1976-03-10 1977-03-03 Improvements in or relating to telephone apparatus

Country Status (4)

Country Link
AU (1) AU517278B2 (en)
GB (1) GB1578127A (en)
NZ (1) NZ183472A (en)
ZA (1) ZA771266B (en)

Also Published As

Publication number Publication date
AU517278B2 (en) 1981-07-23
AU2300577A (en) 1978-09-14
NZ183472A (en) 1981-03-16
GB1578127A (en) 1980-11-05

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