SE7708291L - Logikstyranordning for telefonledningar - Google Patents

Logikstyranordning for telefonledningar

Info

Publication number
SE7708291L
SE7708291L SE7708291A SE7708291A SE7708291L SE 7708291 L SE7708291 L SE 7708291L SE 7708291 A SE7708291 A SE 7708291A SE 7708291 A SE7708291 A SE 7708291A SE 7708291 L SE7708291 L SE 7708291L
Authority
SE
Sweden
Prior art keywords
lead
hook
tip
transient
ring
Prior art date
Application number
SE7708291A
Other languages
Unknown language ( )
English (en)
Other versions
SE431046B (sv
Inventor
R J Angner
M L Blount
J V Lacy
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 SE7708291L publication Critical patent/SE7708291L/sv
Publication of SE431046B publication Critical patent/SE431046B/sv

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)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
SE7708291A 1976-07-28 1977-07-18 Ledningsstyranordning for tangenttelefonsystem for styrning av kvarhallningsfunktionen mellan en telefonvexel och atminstone en abonnentapparat SE431046B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/708,857 US4057693A (en) 1976-07-28 1976-07-28 Logic control for electronic key telephone line circuit

Publications (2)

Publication Number Publication Date
SE7708291L true SE7708291L (sv) 1978-01-29
SE431046B SE431046B (sv) 1983-12-27

Family

ID=24847442

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7708291A SE431046B (sv) 1976-07-28 1977-07-18 Ledningsstyranordning for tangenttelefonsystem for styrning av kvarhallningsfunktionen mellan en telefonvexel och atminstone en abonnentapparat

Country Status (9)

Country Link
US (1) US4057693A (sv)
JP (1) JPS581875B2 (sv)
AU (1) AU514725B2 (sv)
BE (1) BE857036A (sv)
CA (1) CA1079428A (sv)
DE (1) DE2733476C2 (sv)
FR (1) FR2360217A1 (sv)
GB (1) GB1562956A (sv)
SE (1) SE431046B (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194093A (en) * 1978-11-29 1980-03-18 International Telephone And Telegraph Corporation Key system protective apparatus
US4323735A (en) * 1980-09-26 1982-04-06 Bell Telephone Laboratories, Inc. Key telephone line shunt detector circuit
US4311880A (en) * 1980-11-10 1982-01-19 Bell Telephone Laboratories, Incorporated Key telephone hold arrangement
US4803718A (en) * 1987-03-06 1989-02-07 Tree Technologies Corporation Hold detecting and control circuit for a key telephone system
JP3046229B2 (ja) * 1995-10-04 2000-05-29 キヤノン株式会社 電話装置
JP4014762B2 (ja) * 1999-07-09 2007-11-28 松下電器産業株式会社 主装置および電話制御装置
US20030110431A1 (en) * 2001-12-10 2003-06-12 International Business Machines Corporation Scanning an allowed value into a group of latches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29078E (en) 1974-03-29 1976-12-14 Bell Telephone Laboratories, Incorporated Key telephone system
US3920928A (en) * 1974-03-29 1975-11-18 Bell Telephone Labor Inc Line control circuit
US3895192A (en) * 1974-07-25 1975-07-15 Bell Telephone Labor Inc Telephone line circuit hold control arrangement
US3925625A (en) * 1974-07-25 1975-12-09 Bell Telephone Labor Inc Transient controlled telephone line circuit

Also Published As

Publication number Publication date
JPS581875B2 (ja) 1983-01-13
AU514725B2 (en) 1981-02-26
DE2733476A1 (de) 1978-02-02
US4057693A (en) 1977-11-08
AU2731677A (en) 1979-02-01
JPS5317007A (en) 1978-02-16
CA1079428A (en) 1980-06-10
FR2360217B1 (sv) 1981-08-28
GB1562956A (en) 1980-03-19
BE857036A (fr) 1977-11-14
DE2733476C2 (de) 1982-03-18
SE431046B (sv) 1983-12-27
FR2360217A1 (fr) 1978-02-24

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