JPS532011A - Calling signal and calling tone transmitting at telephone exchange - Google Patents

Calling signal and calling tone transmitting at telephone exchange

Info

Publication number
JPS532011A
JPS532011A JP7679076A JP7679076A JPS532011A JP S532011 A JPS532011 A JP S532011A JP 7679076 A JP7679076 A JP 7679076A JP 7679076 A JP7679076 A JP 7679076A JP S532011 A JPS532011 A JP S532011A
Authority
JP
Japan
Prior art keywords
calling
telephone exchange
tone transmitting
signal
calling 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.)
Pending
Application number
JP7679076A
Other languages
English (en)
Inventor
Masato Eguchi
Shoichi Kajiwara
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7679076A priority Critical patent/JPS532011A/ja
Publication of JPS532011A publication Critical patent/JPS532011A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP7679076A 1976-06-29 1976-06-29 Calling signal and calling tone transmitting at telephone exchange Pending JPS532011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7679076A JPS532011A (en) 1976-06-29 1976-06-29 Calling signal and calling tone transmitting at telephone exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7679076A JPS532011A (en) 1976-06-29 1976-06-29 Calling signal and calling tone transmitting at telephone exchange

Publications (1)

Publication Number Publication Date
JPS532011A true JPS532011A (en) 1978-01-10

Family

ID=13615404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7679076A Pending JPS532011A (en) 1976-06-29 1976-06-29 Calling signal and calling tone transmitting at telephone exchange

Country Status (1)

Country Link
JP (1) JPS532011A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5558660A (en) * 1978-10-27 1980-05-01 Oki Electric Ind Co Ltd Ringing tone transmission system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132112A (ja) * 1974-09-12 1976-03-18 Oki Electric Ind Co Ltd Kanyushakairo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132112A (ja) * 1974-09-12 1976-03-18 Oki Electric Ind Co Ltd Kanyushakairo

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5558660A (en) * 1978-10-27 1980-05-01 Oki Electric Ind Co Ltd Ringing tone transmission system

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