JPS53110410A - Calling signal generator - Google Patents

Calling signal generator

Info

Publication number
JPS53110410A
JPS53110410A JP2407278A JP2407278A JPS53110410A JP S53110410 A JPS53110410 A JP S53110410A JP 2407278 A JP2407278 A JP 2407278A JP 2407278 A JP2407278 A JP 2407278A JP S53110410 A JPS53110410 A JP S53110410A
Authority
JP
Japan
Prior art keywords
signal generator
calling signal
calling
generator
signal
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.)
Granted
Application number
JP2407278A
Other languages
English (en)
Other versions
JPS567341B2 (ja
Inventor
Marii Maaseru Fueriy Girubeeru
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of JPS53110410A publication Critical patent/JPS53110410A/ja
Publication of JPS567341B2 publication Critical patent/JPS567341B2/ja
Granted legal-status Critical Current

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
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Filters And Equalizers (AREA)
  • Interface Circuits In Exchanges (AREA)
JP2407278A 1977-03-08 1978-03-04 Calling signal generator Granted JPS53110410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7706756A FR2383568A1 (fr) 1977-03-08 1977-03-08 Dispositif destine a engendrer un signal d'appel et utilisable notamment dans un joncteur d'abonne

Publications (2)

Publication Number Publication Date
JPS53110410A true JPS53110410A (en) 1978-09-27
JPS567341B2 JPS567341B2 (ja) 1981-02-17

Family

ID=9187731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2407278A Granted JPS53110410A (en) 1977-03-08 1978-03-04 Calling signal generator

Country Status (8)

Country Link
US (1) US4174467A (ja)
JP (1) JPS53110410A (ja)
BE (1) BE864603A (ja)
DE (1) DE2807916C3 (ja)
FR (1) FR2383568A1 (ja)
GB (1) GB1548546A (ja)
NL (1) NL7802420A (ja)
SE (1) SE447043B (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270028A (en) * 1979-09-24 1981-05-26 Gte Automatic Electric Laboratories Incorporated Digitally activated ringing circuit for generation of AC voltages
US4354062A (en) * 1980-01-31 1982-10-12 Bell Telephone Laboratories, Incorporated Communication system signaling circuit
NL8000859A (nl) * 1980-02-12 1981-09-01 Philips Nv Inrichting voor het toevoeren van een wekspanning aan een abonneelijn.
US4393491A (en) * 1980-11-05 1983-07-12 Anaconda-Ericsson Automatic self-test system for a digital multiplexed telecommunication system
US4524246A (en) * 1982-07-07 1985-06-18 Harris Corporation SLIC II--common-mode current rejection
IE54008B1 (en) * 1982-11-17 1989-05-10 Lake Electronic Tech Apparatus for delivering a signal on a telephone
US4500844A (en) * 1983-05-20 1985-02-19 At&T Bell Laboratories Ringing signal generator employing delta-modulation power amplification techniques
US5233649A (en) * 1990-08-30 1993-08-03 Guerra Jr Roy H Telephone ringing module
DE4406500A1 (de) * 1994-02-28 1995-08-31 Siemens Ag Schaltungsanordnung zur verlustarmen Erzeugung einer Wechselspannung
GB2358989B (en) * 2000-02-03 2004-01-21 Lake Electronic Tech A circuit for developing an ac ringing voltage from a dc voltage supply

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2138548B1 (ja) * 1971-05-19 1973-05-25 Ibm France
US3723662A (en) * 1971-12-09 1973-03-27 Gte Automatic Electric Lab Inc D.c. compensated subscriber interface transformer circuit for telephone system

Also Published As

Publication number Publication date
SE7802478L (sv) 1978-09-09
DE2807916C3 (de) 1982-03-25
DE2807916B2 (de) 1981-07-02
GB1548546A (en) 1979-07-18
JPS567341B2 (ja) 1981-02-17
DE2807916A1 (de) 1978-09-21
US4174467A (en) 1979-11-13
FR2383568B1 (ja) 1979-07-13
NL7802420A (nl) 1978-09-12
FR2383568A1 (fr) 1978-10-06
SE447043B (sv) 1986-10-20
BE864603A (fr) 1978-09-06

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