SE341019B - - Google Patents

Info

Publication number
SE341019B
SE341019B SE05362/70A SE536270A SE341019B SE 341019 B SE341019 B SE 341019B SE 05362/70 A SE05362/70 A SE 05362/70A SE 536270 A SE536270 A SE 536270A SE 341019 B SE341019 B SE 341019B
Authority
SE
Sweden
Prior art keywords
loop current
central
coupled
called subscriber
tone generator
Prior art date
Application number
SE05362/70A
Other languages
English (en)
Inventor
H Knauer
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of SE341019B publication Critical patent/SE341019B/xx

Links

Classifications

    • 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
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • 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
    • 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
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
SE05362/70A 1969-04-17 1970-04-17 SE341019B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1919585A DE1919585C3 (de) 1969-04-17 1969-04-17 Schaltungsanordnung zum Anruf von mit Tonrufempfängern ausgerüsteten Teilnehmerstellen in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen

Publications (1)

Publication Number Publication Date
SE341019B true SE341019B (de) 1971-12-13

Family

ID=5731506

Family Applications (1)

Application Number Title Priority Date Filing Date
SE05362/70A SE341019B (de) 1969-04-17 1970-04-17

Country Status (9)

Country Link
US (1) US3651271A (de)
BE (1) BE749081A (de)
CH (1) CH514260A (de)
DE (1) DE1919585C3 (de)
ES (1) ES378694A1 (de)
FR (1) FR2043380A5 (de)
GB (1) GB1254258A (de)
NL (1) NL7005535A (de)
SE (1) SE341019B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723662A (en) * 1971-12-09 1973-03-27 Gte Automatic Electric Lab Inc D.c. compensated subscriber interface transformer circuit for telephone system
DE2540973C2 (de) * 1975-09-13 1981-09-17 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur Erkennung von Betriebszuständen einer Teilnehmerleitung und zur Rufanschaltung in Fernsprechvermittlungsanlagen
DE2547880C2 (de) * 1975-10-25 1981-09-24 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur Erkennung von Betriebszuständen einer Teilnehmerleitung und zur Rufanschaltung sowie Rufabschaltung in Fernsprechvermittlungsanlagen
US4025727A (en) * 1976-07-06 1977-05-24 Gte Automatic Electric (Canada) Limited Balanced tone application system
FR2501442B1 (fr) * 1980-12-29 1987-07-17 Thomson Csf Procede et dispositif de detection du decrochage d'un combine telephonique
US4473719A (en) * 1982-05-17 1984-09-25 At&T Bell Laboratories Switchhook status detector
AR243308A1 (es) * 1989-01-27 1993-07-30 Siemens Ag Disposicion de procesamiento de informaciones.
US20060293089A1 (en) * 2005-06-22 2006-12-28 Magix Ag System and method for automatic creation of digitally enhanced ringtones for cellphones

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492436A (en) * 1966-10-12 1970-01-27 Bell Telephone Labor Inc Ringing arrangement with variable intervals

Also Published As

Publication number Publication date
DE1919585B2 (de) 1973-11-15
US3651271A (en) 1972-03-21
DE1919585A1 (de) 1970-11-05
DE1919585C3 (de) 1974-06-06
ES378694A1 (es) 1972-07-16
BE749081A (nl) 1970-10-19
NL7005535A (de) 1970-10-20
FR2043380A5 (de) 1971-02-12
GB1254258A (en) 1971-11-17
CH514260A (de) 1971-10-15

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