JPS6212709B2 - - Google Patents

Info

Publication number
JPS6212709B2
JPS6212709B2 JP2513379A JP2513379A JPS6212709B2 JP S6212709 B2 JPS6212709 B2 JP S6212709B2 JP 2513379 A JP2513379 A JP 2513379A JP 2513379 A JP2513379 A JP 2513379A JP S6212709 B2 JPS6212709 B2 JP S6212709B2
Authority
JP
Japan
Prior art keywords
tone
highway
time division
division switch
digital
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.)
Expired
Application number
JP2513379A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55118264A (en
Inventor
Yoshiro Hasegawa
Tahei Suzuki
Akira Horiki
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 JP2513379A priority Critical patent/JPS55118264A/ja
Publication of JPS55118264A publication Critical patent/JPS55118264A/ja
Publication of JPS6212709B2 publication Critical patent/JPS6212709B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
JP2513379A 1979-03-06 1979-03-06 Digital tone distribution system Granted JPS55118264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2513379A JPS55118264A (en) 1979-03-06 1979-03-06 Digital tone distribution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2513379A JPS55118264A (en) 1979-03-06 1979-03-06 Digital tone distribution system

Publications (2)

Publication Number Publication Date
JPS55118264A JPS55118264A (en) 1980-09-11
JPS6212709B2 true JPS6212709B2 (fr) 1987-03-20

Family

ID=12157457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2513379A Granted JPS55118264A (en) 1979-03-06 1979-03-06 Digital tone distribution system

Country Status (1)

Country Link
JP (1) JPS55118264A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57133757A (en) * 1981-02-12 1982-08-18 Iwatsu Electric Co Ltd Howler tone transmission system in time division electronic exchanger

Also Published As

Publication number Publication date
JPS55118264A (en) 1980-09-11

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