JPS5310A - Call detector - Google Patents

Call detector

Info

Publication number
JPS5310A
JPS5310A JP7460876A JP7460876A JPS5310A JP S5310 A JPS5310 A JP S5310A JP 7460876 A JP7460876 A JP 7460876A JP 7460876 A JP7460876 A JP 7460876A JP S5310 A JPS5310 A JP S5310A
Authority
JP
Japan
Prior art keywords
call detector
call
detector
reliability
test
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
JP7460876A
Other languages
English (en)
Japanese (ja)
Other versions
JPS571172B2 (cs
Inventor
Sadao Furukawa
Akiyasu Suzuki
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 JP7460876A priority Critical patent/JPS5310A/ja
Publication of JPS5310A publication Critical patent/JPS5310A/ja
Publication of JPS571172B2 publication Critical patent/JPS571172B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
JP7460876A 1976-06-24 1976-06-24 Call detector Granted JPS5310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7460876A JPS5310A (en) 1976-06-24 1976-06-24 Call detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7460876A JPS5310A (en) 1976-06-24 1976-06-24 Call detector

Publications (2)

Publication Number Publication Date
JPS5310A true JPS5310A (en) 1978-01-05
JPS571172B2 JPS571172B2 (cs) 1982-01-09

Family

ID=13552047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7460876A Granted JPS5310A (en) 1976-06-24 1976-06-24 Call detector

Country Status (1)

Country Link
JP (1) JPS5310A (cs)

Also Published As

Publication number Publication date
JPS571172B2 (cs) 1982-01-09

Similar Documents

Publication Publication Date Title
NL7612746A (nl) Testapparaat.
NL7703254A (nl) Samengestelde testschakeling.
JPS5468269A (en) Device for inspecting hydro circuit
JPS526125A (en) Earthquake sensitive valve equipment
JPS5310A (en) Call detector
JPS544001A (en) Testing circuit
SE7509541L (sv) Vegningsutrustning
JPS5396740A (en) Test system
JPS5366198A (en) Indicator for antiidisaster equipment
JPS5293361A (en) Automatic tester
JPS5371347A (en) Program indication equipment of cooking equipment
JPS54817A (en) Fault cause indicator
JPS5320981A (en) Voltage-withstand tester
IT7830232A0 (it) Apparecchio di verifica.
JPS5274255A (en) Liquid crystal indicator
JPS5295447A (en) Signal device for elevator
JPS52111306A (en) Testing device for subscribers circuit
JPS522353A (en) Electronic circuit testing equipment
GB1555026A (en) Circuit testing apparatus
JPS5211809A (en) Data transmission system
JPS5210004A (en) Switching circuit by voice signal
JPS5367093A (en) Nuclear equipment
JPS5233556A (en) Leakage test method
JPS5215206A (en) Detector circuit for key telephone
JPS5361243A (en) 1-chip arithmetic circuit device