IE38355L - Telephone intercommunications system. - Google Patents

Telephone intercommunications system.

Info

Publication number
IE38355L
IE38355L IE731783A IE178373A IE38355L IE 38355 L IE38355 L IE 38355L IE 731783 A IE731783 A IE 731783A IE 178373 A IE178373 A IE 178373A IE 38355 L IE38355 L IE 38355L
Authority
IE
Ireland
Prior art keywords
telephone
intercommunications system
intercommunications
telephone intercommunications
Prior art date
Application number
IE731783A
Other versions
IE38355B1 (en
Original Assignee
Thorn Ericsson Telecomm Mfg Lt
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 Ericsson Telecomm Mfg Lt filed Critical Thorn Ericsson Telecomm Mfg Lt
Publication of IE38355L publication Critical patent/IE38355L/en
Publication of IE38355B1 publication Critical patent/IE38355B1/en

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)
IE1783/73A 1972-10-12 1973-10-08 Improvements in and relating to telephone systems IE38355B1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IE38355L true IE38355L (en) 1974-04-12
IE38355B1 IE38355B1 (en) 1978-03-01

Family

ID=10443966

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1783/73A IE38355B1 (en) 1972-10-12 1973-10-08 Improvements in and relating to telephone systems

Country Status (4)

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

Also Published As

Publication number Publication date
IE38355B1 (en) 1978-03-01
IT998744B (en) 1976-02-20
ZA737860B (en) 1974-10-30
SE404575B (en) 1978-10-09

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