JPS52142407A - Intermitting tone monitor system - Google Patents

Intermitting tone monitor system

Info

Publication number
JPS52142407A
JPS52142407A JP5904276A JP5904276A JPS52142407A JP S52142407 A JPS52142407 A JP S52142407A JP 5904276 A JP5904276 A JP 5904276A JP 5904276 A JP5904276 A JP 5904276A JP S52142407 A JPS52142407 A JP S52142407A
Authority
JP
Japan
Prior art keywords
intermitting
monitor system
tone
tone monitor
monitoring
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
JP5904276A
Other languages
Japanese (ja)
Other versions
JPS5721146B2 (en
Inventor
Susumu Enokido
Akira Ichimura
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 JP5904276A priority Critical patent/JPS52142407A/en
Publication of JPS52142407A publication Critical patent/JPS52142407A/en
Publication of JPS5721146B2 publication Critical patent/JPS5721146B2/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

Abstract

PURPOSE:To provide a system embodied substantially same reliability as in the case of monitoring both on and off of the tone by monitoring one of on or off of the tone.
JP5904276A 1976-05-24 1976-05-24 Intermitting tone monitor system Granted JPS52142407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5904276A JPS52142407A (en) 1976-05-24 1976-05-24 Intermitting tone monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5904276A JPS52142407A (en) 1976-05-24 1976-05-24 Intermitting tone monitor system

Publications (2)

Publication Number Publication Date
JPS52142407A true JPS52142407A (en) 1977-11-28
JPS5721146B2 JPS5721146B2 (en) 1982-05-06

Family

ID=13101841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5904276A Granted JPS52142407A (en) 1976-05-24 1976-05-24 Intermitting tone monitor system

Country Status (1)

Country Link
JP (1) JPS52142407A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185856A (en) * 1982-04-21 1983-10-29 清水建設株式会社 Support for use with working scaffold for constructing src structural beam

Also Published As

Publication number Publication date
JPS5721146B2 (en) 1982-05-06

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