JPS5673959A - Test system for relay line of 4-wire type - Google Patents

Test system for relay line of 4-wire type

Info

Publication number
JPS5673959A
JPS5673959A JP15116779A JP15116779A JPS5673959A JP S5673959 A JPS5673959 A JP S5673959A JP 15116779 A JP15116779 A JP 15116779A JP 15116779 A JP15116779 A JP 15116779A JP S5673959 A JPS5673959 A JP S5673959A
Authority
JP
Japan
Prior art keywords
wire type
test
signal
station
incoming
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
JP15116779A
Other languages
English (en)
Inventor
Hideji Takagi
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 JP15116779A priority Critical patent/JPS5673959A/ja
Publication of JPS5673959A publication Critical patent/JPS5673959A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP15116779A 1979-11-21 1979-11-21 Test system for relay line of 4-wire type Pending JPS5673959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15116779A JPS5673959A (en) 1979-11-21 1979-11-21 Test system for relay line of 4-wire type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15116779A JPS5673959A (en) 1979-11-21 1979-11-21 Test system for relay line of 4-wire type

Publications (1)

Publication Number Publication Date
JPS5673959A true JPS5673959A (en) 1981-06-19

Family

ID=15512777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15116779A Pending JPS5673959A (en) 1979-11-21 1979-11-21 Test system for relay line of 4-wire type

Country Status (1)

Country Link
JP (1) JPS5673959A (ja)

Similar Documents

Publication Publication Date Title
JPS5745769A (en) Control signal system for subscriber terminal connection
JPS5673959A (en) Test system for relay line of 4-wire type
US4445007A (en) Remote testing of subscriber line interface circuits
ES472357A1 (es) Un dispositivo para realizar pruebas de continuidad en sis- temas de telecomunicacion
JPS5792965A (en) Data communication device
JPS55136759A (en) Line test system
JPS55130287A (en) Storing method of carrier circuit for 4-wire exchange device
JPS57210738A (en) Callout connecting system for missing person
JPS533718A (en) Fault test system of terminal station in time division multiple connecting communication system
JPS55161458A (en) Fault discriminating system in facsimile communication system
JPS5563161A (en) Subscriber circuit test system by subscriber side starting
JPS55125763A (en) Automatic howler tone transmission system
JPS5689191A (en) Select signal relaying system
JPS5690661A (en) Two-circuit simultaneous connection and exchange system of key telephone set
JPS60232759A (ja) 遠隔地における加入者回線試験方式
JPS55125756A (en) Connection test system for automatic exchanger
JPS56157169A (en) Called subscriber answering system of data transmission system
JPS6083456A (ja) トランクの導通試験方式
JPS55145455A (en) Backup system for center device
JPS57162863A (en) Intra-office test system for trunk
JPS645252A (en) Continuity test system
JPS5764175A (en) Continuity test system for switching network by audible sound
JPS56125147A (en) Test system of trunk designation connection
JPS5474614A (en) Connection and test system for relay line
JPS57136849A (en) Remote subscriber line testing system