JPS595768A - デイジタルト−ン発生器の障害検出回路 - Google Patents

デイジタルト−ン発生器の障害検出回路

Info

Publication number
JPS595768A
JPS595768A JP11419882A JP11419882A JPS595768A JP S595768 A JPS595768 A JP S595768A JP 11419882 A JP11419882 A JP 11419882A JP 11419882 A JP11419882 A JP 11419882A JP S595768 A JPS595768 A JP S595768A
Authority
JP
Japan
Prior art keywords
tone data
channel
tone
point
data
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
JP11419882A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0234503B2 (enExample
Inventor
Nobuo Taniguchi
谷口　伸夫
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 JP11419882A priority Critical patent/JPS595768A/ja
Publication of JPS595768A publication Critical patent/JPS595768A/ja
Publication of JPH0234503B2 publication Critical patent/JPH0234503B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H04M3/244—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP11419882A 1982-07-01 1982-07-01 デイジタルト−ン発生器の障害検出回路 Granted JPS595768A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11419882A JPS595768A (ja) 1982-07-01 1982-07-01 デイジタルト−ン発生器の障害検出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11419882A JPS595768A (ja) 1982-07-01 1982-07-01 デイジタルト−ン発生器の障害検出回路

Publications (2)

Publication Number Publication Date
JPS595768A true JPS595768A (ja) 1984-01-12
JPH0234503B2 JPH0234503B2 (enExample) 1990-08-03

Family

ID=14631653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11419882A Granted JPS595768A (ja) 1982-07-01 1982-07-01 デイジタルト−ン発生器の障害検出回路

Country Status (1)

Country Link
JP (1) JPS595768A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6423660A (en) * 1987-07-20 1989-01-26 Fujitsu Ltd Trouble noticing device at line concentrator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5673966A (en) * 1979-11-21 1981-06-19 Nec Corp Output monitor circuit of digital tone generator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5673966A (en) * 1979-11-21 1981-06-19 Nec Corp Output monitor circuit of digital tone generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6423660A (en) * 1987-07-20 1989-01-26 Fujitsu Ltd Trouble noticing device at line concentrator

Also Published As

Publication number Publication date
JPH0234503B2 (enExample) 1990-08-03

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