CH594335A5 - - Google Patents

Info

Publication number
CH594335A5
CH594335A5 CH1650474A CH1650474A CH594335A5 CH 594335 A5 CH594335 A5 CH 594335A5 CH 1650474 A CH1650474 A CH 1650474A CH 1650474 A CH1650474 A CH 1650474A CH 594335 A5 CH594335 A5 CH 594335A5
Authority
CH
Switzerland
Application number
CH1650474A
Inventor
James Royce Mceowen
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of CH594335A5 publication Critical patent/CH594335A5/xx

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)
  • Interface Circuits In Exchanges (AREA)
CH1650474A 1973-12-12 1974-12-11 CH594335A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US426648A US3916116A (en) 1973-12-12 1973-12-12 Hold bridge circuit

Publications (1)

Publication Number Publication Date
CH594335A5 true CH594335A5 (fr) 1978-01-13

Family

ID=23691644

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1650474A CH594335A5 (fr) 1973-12-12 1974-12-11

Country Status (12)

Country Link
US (1) US3916116A (fr)
JP (1) JPS584508B2 (fr)
BE (1) BE823214A (fr)
CA (1) CA1006995A (fr)
CH (1) CH594335A5 (fr)
DE (1) DE2458298C2 (fr)
ES (1) ES432840A1 (fr)
FR (1) FR2254920B1 (fr)
GB (1) GB1490869A (fr)
IT (1) IT1026881B (fr)
NL (1) NL177547C (fr)
SE (1) SE7415136L (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5184504A (fr) * 1975-01-21 1976-07-23 Iwatsu Electric Co Ltd
JPS52111302A (en) * 1976-03-15 1977-09-19 Taiko Denki Seisakusho:Kk Connecting system of button telephone set
US4132860A (en) * 1977-08-01 1979-01-02 Crest Industries, Inc. Hold control for a key telephone system
WO1979000078A1 (fr) * 1977-08-01 1979-02-22 H Rasmussen Commande pour un systeme telephonique cle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862062A (en) * 1956-05-22 1958-11-25 Bell Telephone Labor Inc Holding arrangement for universaltype line circuit
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
DE1562142C3 (de) * 1968-02-29 1975-05-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Schaltungsanordnung für Chef-Sekretärstationen in Fernsprechnebenstellenanlagen
IL30070A (en) * 1968-05-24 1971-05-26 Telrad Telecommunication & Ele Line grip circuit for multi-line telephone system
JPS4932003B1 (fr) * 1969-03-31 1974-08-27
US3725600A (en) * 1969-12-18 1973-04-03 American Telephone & Telegraph Communication call holding circuit
CA924425A (en) * 1971-01-18 1973-04-10 Northern Electric Company Limited Hold circuit for multi-line key telephone system
US3764752A (en) * 1972-01-11 1973-10-09 Teltronics Inc Telephone line card system

Also Published As

Publication number Publication date
US3916116A (en) 1975-10-28
FR2254920A1 (fr) 1975-07-11
NL177547C (nl) 1985-10-01
AU7613474A (en) 1976-06-10
DE2458298C2 (de) 1984-04-26
JPS5092613A (fr) 1975-07-24
DE2458298A1 (de) 1975-06-19
ES432840A1 (es) 1976-11-01
NL7416124A (nl) 1975-06-16
BE823214A (fr) 1975-04-01
NL177547B (nl) 1985-05-01
CA1006995A (en) 1977-03-15
IT1026881B (it) 1978-10-20
SE7415136L (fr) 1975-06-13
GB1490869A (en) 1977-11-02
FR2254920B1 (fr) 1977-04-08
JPS584508B2 (ja) 1983-01-26

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Legal Events

Date Code Title Description
PL Patent ceased