AU5933173A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
AU5933173A
AU5933173A AU59331/73A AU5933173A AU5933173A AU 5933173 A AU5933173 A AU 5933173A AU 59331/73 A AU59331/73 A AU 59331/73A AU 5933173 A AU5933173 A AU 5933173A AU 5933173 A AU5933173 A AU 5933173A
Authority
AU
Australia
Prior art keywords
telephone systems
telephone
systems
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
AU59331/73A
Other languages
English (en)
Other versions
AU480339B2 (en:Method
Inventor
Alexander Feiner
Allan Martyn Gerrish
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Publication of AU480339B2 publication Critical patent/AU480339B2/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of AU5933173A publication Critical patent/AU5933173A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
    • H04M9/006—Exchange line circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
AU59331/73A 1972-08-23 1973-08-17 Telephone systems Expired AU5933173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28292172A 1972-08-23 1972-08-23

Publications (2)

Publication Number Publication Date
AU480339B2 AU480339B2 (en:Method)
AU5933173A true AU5933173A (en) 1975-02-20

Family

ID=23083695

Family Applications (1)

Application Number Title Priority Date Filing Date
AU59331/73A Expired AU5933173A (en) 1972-08-23 1973-08-17 Telephone systems

Country Status (11)

Country Link
US (1) US3795776A (en:Method)
JP (1) JPS5830794B2 (en:Method)
AU (1) AU5933173A (en:Method)
BE (1) BE803833A (en:Method)
CA (1) CA984982A (en:Method)
DE (1) DE2341827C2 (en:Method)
FR (1) FR2197293B1 (en:Method)
GB (1) GB1436460A (en:Method)
IT (1) IT994635B (en:Method)
NL (1) NL7311384A (en:Method)
SE (1) SE394170B (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991282A (en) * 1974-12-27 1976-11-09 Feil Thomas E Multi station telephone switching system
US4677662A (en) * 1984-08-23 1987-06-30 Lott Thomas M Multiple line self-contained telephone

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239610A (en) * 1962-12-26 1966-03-08 Bell Telephone Labor Inc Line circuit for key telephone system
US3283083A (en) * 1963-03-13 1966-11-01 American Telephone & Telegraph Telephone subscriber's line circuit
US3436488A (en) * 1966-03-17 1969-04-01 Bell Telephone Labor Inc Line circuit for a key telephone system utilizing a single multifunction supervisory relay
US3647983A (en) * 1969-08-25 1972-03-07 San Bar Electronics Corp Key system line card circuit

Also Published As

Publication number Publication date
DE2341827C2 (de) 1983-06-09
JPS5830794B2 (ja) 1983-07-01
BE803833A (fr) 1973-12-17
JPS4965110A (en:Method) 1974-06-24
US3795776A (en) 1974-03-05
CA984982A (en) 1976-03-02
SE394170B (sv) 1977-06-06
IT994635B (it) 1975-10-20
GB1436460A (en) 1976-05-19
FR2197293A1 (en:Method) 1974-03-22
FR2197293B1 (en:Method) 1977-09-16
NL7311384A (en:Method) 1974-02-26
DE2341827A1 (de) 1974-03-07

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