ZA752216B - Improvements in or relating to telephone exchanges - Google Patents

Improvements in or relating to telephone exchanges

Info

Publication number
ZA752216B
ZA752216B ZA00752216A ZA752216A ZA752216B ZA 752216 B ZA752216 B ZA 752216B ZA 00752216 A ZA00752216 A ZA 00752216A ZA 752216 A ZA752216 A ZA 752216A ZA 752216 B ZA752216 B ZA 752216B
Authority
ZA
South Africa
Prior art keywords
relating
telephone exchanges
exchanges
telephone
Prior art date
Application number
ZA00752216A
Inventor
F Stallworthy
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 ZA752216B publication Critical patent/ZA752216B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
ZA00752216A 1974-06-18 1975-04-08 Improvements in or relating to telephone exchanges ZA752216B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2693174A GB1473338A (en) 1974-06-18 1974-06-18 Telephone exchanges

Publications (1)

Publication Number Publication Date
ZA752216B true ZA752216B (en) 1976-03-31

Family

ID=10251463

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00752216A ZA752216B (en) 1974-06-18 1975-04-08 Improvements in or relating to telephone exchanges

Country Status (3)

Country Link
GB (1) GB1473338A (en)
IE (1) IE42437B1 (en)
ZA (1) ZA752216B (en)

Also Published As

Publication number Publication date
IE42437B1 (en) 1980-08-13
GB1473338A (en) 1977-05-11
IE42437L (en) 1975-12-18

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