JPS56988B2 - - Google Patents

Info

Publication number
JPS56988B2
JPS56988B2 JP2197273A JP2197273A JPS56988B2 JP S56988 B2 JPS56988 B2 JP S56988B2 JP 2197273 A JP2197273 A JP 2197273A JP 2197273 A JP2197273 A JP 2197273A JP S56988 B2 JPS56988 B2 JP S56988B2
Authority
JP
Japan
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.)
Expired
Application number
JP2197273A
Other languages
Japanese (ja)
Other versions
JPS49111533A (cs
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 filed Critical
Priority to JP2197273A priority Critical patent/JPS56988B2/ja
Publication of JPS49111533A publication Critical patent/JPS49111533A/ja
Publication of JPS56988B2 publication Critical patent/JPS56988B2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
JP2197273A 1973-02-22 1973-02-22 Expired JPS56988B2 (cs)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2197273A JPS56988B2 (cs) 1973-02-22 1973-02-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2197273A JPS56988B2 (cs) 1973-02-22 1973-02-22

Publications (2)

Publication Number Publication Date
JPS49111533A JPS49111533A (cs) 1974-10-24
JPS56988B2 true JPS56988B2 (cs) 1981-01-10

Family

ID=12069939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2197273A Expired JPS56988B2 (cs) 1973-02-22 1973-02-22

Country Status (1)

Country Link
JP (1) JPS56988B2 (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120244A (en) * 1979-03-08 1980-09-16 Nec Corp Phase supervisory system
JPS6398259A (ja) * 1986-10-15 1988-04-28 Hitachi Ltd 伝送ル−ト切換装置

Also Published As

Publication number Publication date
JPS49111533A (cs) 1974-10-24

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