IT998744B - Sistema per comunicazioni telefoniche - Google Patents

Sistema per comunicazioni telefoniche

Info

Publication number
IT998744B
IT998744B IT30099/73A IT3009973A IT998744B IT 998744 B IT998744 B IT 998744B IT 30099/73 A IT30099/73 A IT 30099/73A IT 3009973 A IT3009973 A IT 3009973A IT 998744 B IT998744 B IT 998744B
Authority
IT
Italy
Prior art keywords
telephone communications
telephone
communications
Prior art date
Application number
IT30099/73A
Other languages
English (en)
Original Assignee
Thorn General Telephone 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
Priority claimed from GB4716072A external-priority patent/GB1410508A/en
Application filed by Thorn General Telephone Ltd filed Critical Thorn General Telephone Ltd
Application granted granted Critical
Publication of IT998744B publication Critical patent/IT998744B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42314—Systems providing special services or facilities to subscribers in private branch exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/06—Arrangements for interconnection not involving centralised switching involving combinations of interconnecting lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
IT30099/73A 1972-10-12 1973-10-12 Sistema per comunicazioni telefoniche IT998744B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4716072A GB1410508A (en) 1972-10-12 1972-10-12 Telephone systems

Publications (1)

Publication Number Publication Date
IT998744B true IT998744B (it) 1976-02-20

Family

ID=10443966

Family Applications (1)

Application Number Title Priority Date Filing Date
IT30099/73A IT998744B (it) 1972-10-12 1973-10-12 Sistema per comunicazioni telefoniche

Country Status (4)

Country Link
IE (1) IE38355B1 (it)
IT (1) IT998744B (it)
SE (1) SE404575B (it)
ZA (1) ZA737860B (it)

Also Published As

Publication number Publication date
IE38355B1 (en) 1978-03-01
IE38355L (en) 1974-04-12
ZA737860B (en) 1974-10-30
SE404575B (sv) 1978-10-09

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