ZA755927B - Improvements in telephone subsets - Google Patents

Improvements in telephone subsets

Info

Publication number
ZA755927B
ZA755927B ZA00755927A ZA755927A ZA755927B ZA 755927 B ZA755927 B ZA 755927B ZA 00755927 A ZA00755927 A ZA 00755927A ZA 755927 A ZA755927 A ZA 755927A ZA 755927 B ZA755927 B ZA 755927B
Authority
ZA
South Africa
Prior art keywords
telephone subsets
subsets
telephone
Prior art date
Application number
ZA00755927A
Inventor
R Wrigley
A Huckfield
S Bradley
J King
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 ZA755927B publication Critical patent/ZA755927B/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)
  • Relay Circuits (AREA)
ZA00755927A 1974-12-10 1975-09-17 Improvements in telephone subsets ZA755927B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53371/74A GB1480240A (en) 1974-12-10 1974-12-10 Telephone subsets

Publications (1)

Publication Number Publication Date
ZA755927B true ZA755927B (en) 1976-08-25

Family

ID=10467565

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00755927A ZA755927B (en) 1974-12-10 1975-09-17 Improvements in telephone subsets

Country Status (3)

Country Link
GB (1) GB1480240A (en)
HK (1) HK13278A (en)
ZA (1) ZA755927B (en)

Also Published As

Publication number Publication date
GB1480240A (en) 1977-07-20
HK13278A (en) 1978-03-17

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