JPS52135603A - Signal tone transmission system - Google Patents

Signal tone transmission system

Info

Publication number
JPS52135603A
JPS52135603A JP5306476A JP5306476A JPS52135603A JP S52135603 A JPS52135603 A JP S52135603A JP 5306476 A JP5306476 A JP 5306476A JP 5306476 A JP5306476 A JP 5306476A JP S52135603 A JPS52135603 A JP S52135603A
Authority
JP
Japan
Prior art keywords
transmission system
signal tone
tone transmission
signal
economy
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
JP5306476A
Other languages
Japanese (ja)
Inventor
Yoshitaka Osakabe
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5306476A priority Critical patent/JPS52135603A/en
Publication of JPS52135603A publication Critical patent/JPS52135603A/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)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To realize the system suitable for various exchanging system with economy, by providing the control contact for the signal tone.
JP5306476A 1976-05-08 1976-05-08 Signal tone transmission system Pending JPS52135603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5306476A JPS52135603A (en) 1976-05-08 1976-05-08 Signal tone transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5306476A JPS52135603A (en) 1976-05-08 1976-05-08 Signal tone transmission system

Publications (1)

Publication Number Publication Date
JPS52135603A true JPS52135603A (en) 1977-11-12

Family

ID=12932396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5306476A Pending JPS52135603A (en) 1976-05-08 1976-05-08 Signal tone transmission system

Country Status (1)

Country Link
JP (1) JPS52135603A (en)

Similar Documents

Publication Publication Date Title
JPS5336116A (en) Loop transmission system
JPS52153651A (en) Gain changing circuit
JPS5394813A (en) Signal process system
JPS52135603A (en) Signal tone transmission system
JPS5368527A (en) Information transmitter
JPS52104680A (en) Vehicles control system
JPS5336118A (en) Loop transmission system
JPS536A (en) Different program signal transmission system
JPS5354908A (en) Dot pattern data transmission system
JPS5368009A (en) Control information transmission system for out-trunk
SU603531A1 (en) Current transmission device
JPS51150909A (en) Data intertransmitting system
JPS537A (en) Multiple transmission system
JPS52140203A (en) Information transmission system
JPS5336405A (en) Loop transmission system
JPS5371504A (en) Priority selecting unit
JPS5333503A (en) Information transmission system
JPS5279610A (en) Telautograph communication system
JPS5391611A (en) Mfc signal control system
JPS5336406A (en) Loop transmission system
JPS53110788A (en) Telemonitor controller
JPS53108241A (en) Memory address modification system
JPS53117904A (en) Transmission control system
JPS52126103A (en) Communication method
JPS5324209A (en) Transmission-reception connection system for automatic exchange un it