JPS5514710A - Sending system of trunk signal tone - Google Patents

Sending system of trunk signal tone

Info

Publication number
JPS5514710A
JPS5514710A JP8677078A JP8677078A JPS5514710A JP S5514710 A JPS5514710 A JP S5514710A JP 8677078 A JP8677078 A JP 8677078A JP 8677078 A JP8677078 A JP 8677078A JP S5514710 A JPS5514710 A JP S5514710A
Authority
JP
Japan
Prior art keywords
given
relay
transmitted
signal tone
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.)
Granted
Application number
JP8677078A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6227585B2 (enrdf_load_stackoverflow
Inventor
Makoto Furukawa
Iwao Uda
Kiichi Shimizu
Takeo Ishitsuki
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8677078A priority Critical patent/JPS5514710A/ja
Publication of JPS5514710A publication Critical patent/JPS5514710A/ja
Publication of JPS6227585B2 publication Critical patent/JPS6227585B2/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)
  • Interface Circuits In Exchanges (AREA)
JP8677078A 1978-07-18 1978-07-18 Sending system of trunk signal tone Granted JPS5514710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8677078A JPS5514710A (en) 1978-07-18 1978-07-18 Sending system of trunk signal tone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8677078A JPS5514710A (en) 1978-07-18 1978-07-18 Sending system of trunk signal tone

Publications (2)

Publication Number Publication Date
JPS5514710A true JPS5514710A (en) 1980-02-01
JPS6227585B2 JPS6227585B2 (enrdf_load_stackoverflow) 1987-06-16

Family

ID=13895975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8677078A Granted JPS5514710A (en) 1978-07-18 1978-07-18 Sending system of trunk signal tone

Country Status (1)

Country Link
JP (1) JPS5514710A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201368A (en) * 1981-06-03 1982-12-09 Fujitsu Ltd Ring-back tone send-out system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130219A (en) * 1976-04-24 1977-11-01 Fujitsu Ltd Transmission control system for call signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130219A (en) * 1976-04-24 1977-11-01 Fujitsu Ltd Transmission control system for call signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201368A (en) * 1981-06-03 1982-12-09 Fujitsu Ltd Ring-back tone send-out system

Also Published As

Publication number Publication date
JPS6227585B2 (enrdf_load_stackoverflow) 1987-06-16

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