JPS5574254A - Electronic telephone set - Google Patents

Electronic telephone set

Info

Publication number
JPS5574254A
JPS5574254A JP14993579A JP14993579A JPS5574254A JP S5574254 A JPS5574254 A JP S5574254A JP 14993579 A JP14993579 A JP 14993579A JP 14993579 A JP14993579 A JP 14993579A JP S5574254 A JPS5574254 A JP S5574254A
Authority
JP
Japan
Prior art keywords
telephone set
electronic telephone
electronic
telephone
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.)
Pending
Application number
JP14993579A
Other languages
Japanese (ja)
Inventor
Rii Norisu Jierii
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of JPS5574254A publication Critical patent/JPS5574254A/en
Pending 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
    • H04M19/04—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
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Electronic Switches (AREA)
JP14993579A 1978-11-20 1979-11-19 Electronic telephone set Pending JPS5574254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US96254878A 1978-11-20 1978-11-20

Publications (1)

Publication Number Publication Date
JPS5574254A true JPS5574254A (en) 1980-06-04

Family

ID=25506049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14993579A Pending JPS5574254A (en) 1978-11-20 1979-11-19 Electronic telephone set

Country Status (4)

Country Link
JP (1) JPS5574254A (en)
DE (1) DE2946815A1 (en)
GB (1) GB2037128B (en)
HK (1) HK30288A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8103419A (en) * 1981-04-01 1982-11-01 Philips Nv LINE TEST CIRCUIT FOR A SUBSCRIBER PHONE.
FR2532133A1 (en) * 1982-08-17 1984-02-24 Labo Cent Telecommunicat CIRCUIT OF RINGER FOR TELEPHONE STATION, REALIZABLE IN INTEGRATED CIRCUIT
EP0134867B1 (en) * 1983-08-18 1987-03-18 Itt Industries, Inc. Telephone ringing circuit realisable as an integrated circuit
CH668521A5 (en) * 1983-10-18 1988-12-30 Siemens Ag Albis CIRCUIT ARRANGEMENT FOR A TELEPHONE.
DE3504243A1 (en) * 1985-02-08 1986-08-14 Philips Patentverwaltung Gmbh, 2000 Hamburg METHOD AND CIRCUIT ARRANGEMENT FOR GENERATING AN ACOUSTIC CALL SIGNAL IN SUBSCRIBER TERMINALS OF TELECOMMUNICATION SYSTEMS

Also Published As

Publication number Publication date
DE2946815A1 (en) 1980-05-29
HK30288A (en) 1988-05-06
GB2037128A (en) 1980-07-02
GB2037128B (en) 1983-04-13

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