JPS4421449B1 - - Google Patents

Info

Publication number
JPS4421449B1
JPS4421449B1 JP6513567A JP6513567A JPS4421449B1 JP S4421449 B1 JPS4421449 B1 JP S4421449B1 JP 6513567 A JP6513567 A JP 6513567A JP 6513567 A JP6513567 A JP 6513567A JP S4421449 B1 JPS4421449 B1 JP S4421449B1
Authority
JP
Japan
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.)
Pending
Application number
JP6513567A
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 filed Critical
Publication of JPS4421449B1 publication Critical patent/JPS4421449B1/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
JP6513567A 1966-10-12 1967-10-11 Pending JPS4421449B1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58626666A 1966-10-12 1966-10-12
US58626766A 1966-10-12 1966-10-12

Publications (1)

Publication Number Publication Date
JPS4421449B1 true JPS4421449B1 (ja) 1969-09-12

Family

ID=27079658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6513567A Pending JPS4421449B1 (ja) 1966-10-12 1967-10-11

Country Status (4)

Country Link
US (2) US3492437A (ja)
JP (1) JPS4421449B1 (ja)
GB (1) GB1199749A (ja)
SE (1) SE375678B (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1919585C3 (de) * 1969-04-17 1974-06-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum Anruf von mit Tonrufempfängern ausgerüsteten Teilnehmerstellen in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen
US3671678A (en) * 1970-12-22 1972-06-20 Stromberg Carlson Corp Ringing control circuit
FR2129281A5 (ja) * 1971-03-11 1972-10-27 Ibm France
US3752924A (en) * 1971-11-10 1973-08-14 Bell Telephone Labor Inc Telephone subscriber line ring-trip detection circuit
US3978293A (en) * 1974-11-07 1976-08-31 Bell Telephone Laboratories, Incorporated Ringing control circuitry with shared ringing loop current detector
US3978292A (en) * 1974-11-07 1976-08-31 Bell Telephone Laboratories, Incorporated Ringing control circuitry with shared ringing loop current detector
JPS51138310A (en) * 1975-05-26 1976-11-29 Hitachi Ltd Ringing signal sending system
JPS52130219A (en) * 1976-04-24 1977-11-01 Fujitsu Ltd Transmission control system for call signal
CA1114536A (en) * 1978-12-11 1981-12-15 William B. Kiss Ringing generator
JP2775002B2 (ja) * 1990-07-09 1998-07-09 松下電器産業株式会社 呼出信号制御装置
JP3056551B2 (ja) * 1991-09-02 2000-06-26 富士通株式会社 加入者系伝送装置のアラーティングケーダンス制御方式
US6956943B1 (en) * 2000-11-30 2005-10-18 Sprint Communications Company L.P. Method and apparatus for minimizing the telephony ring voltage power supply requirements of an integrated services hub

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385715A (en) * 1941-10-09 1945-09-25 Automatic Elect Lab Telephone system
US2535675A (en) * 1948-10-29 1950-12-26 Bell Telephone Labor Inc Ringing control circuit
US2924663A (en) * 1954-07-01 1960-02-09 Itt Party-line automatic telephone system
US3378650A (en) * 1964-10-15 1968-04-16 Bell Telephone Labor Inc Communication system signaling and testing equipment

Also Published As

Publication number Publication date
US3492436A (en) 1970-01-27
DE1537919A1 (de) 1970-01-02
GB1199749A (en) 1970-07-22
SE375678B (ja) 1975-04-21
US3492437A (en) 1970-01-27
DE1537919B2 (de) 1972-08-03

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