JPS542607A - Generator for overlap signal tone - Google Patents

Generator for overlap signal tone

Info

Publication number
JPS542607A
JPS542607A JP6667477A JP6667477A JPS542607A JP S542607 A JPS542607 A JP S542607A JP 6667477 A JP6667477 A JP 6667477A JP 6667477 A JP6667477 A JP 6667477A JP S542607 A JPS542607 A JP S542607A
Authority
JP
Japan
Prior art keywords
generator
signal tone
overlap signal
overlap
tone
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
JP6667477A
Other languages
Japanese (ja)
Inventor
Kaoru Tokunaga
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6667477A priority Critical patent/JPS542607A/en
Publication of JPS542607A publication Critical patent/JPS542607A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To generate a subscriber signal and inter-office signals economically, and to economize the device by using a logic circuit and memory.
JP6667477A 1977-06-08 1977-06-08 Generator for overlap signal tone Pending JPS542607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6667477A JPS542607A (en) 1977-06-08 1977-06-08 Generator for overlap signal tone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6667477A JPS542607A (en) 1977-06-08 1977-06-08 Generator for overlap signal tone

Publications (1)

Publication Number Publication Date
JPS542607A true JPS542607A (en) 1979-01-10

Family

ID=13322689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6667477A Pending JPS542607A (en) 1977-06-08 1977-06-08 Generator for overlap signal tone

Country Status (1)

Country Link
JP (1) JPS542607A (en)

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