JPS4917111A - - Google Patents

Info

Publication number
JPS4917111A
JPS4917111A JP5061072A JP5061072A JPS4917111A JP S4917111 A JPS4917111 A JP S4917111A JP 5061072 A JP5061072 A JP 5061072A JP 5061072 A JP5061072 A JP 5061072A JP S4917111 A JPS4917111 A JP S4917111A
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.)
Pending
Application number
JP5061072A
Other languages
Japanese (ja)
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 JP5061072A priority Critical patent/JPS4917111A/ja
Publication of JPS4917111A publication Critical patent/JPS4917111A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
JP5061072A 1972-05-22 1972-05-22 Pending JPS4917111A (pl)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5061072A JPS4917111A (pl) 1972-05-22 1972-05-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5061072A JPS4917111A (pl) 1972-05-22 1972-05-22

Publications (1)

Publication Number Publication Date
JPS4917111A true JPS4917111A (pl) 1974-02-15

Family

ID=12863727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5061072A Pending JPS4917111A (pl) 1972-05-22 1972-05-22

Country Status (1)

Country Link
JP (1) JPS4917111A (pl)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150604A (ja) * 1974-10-30 1976-05-04 Hitachi Ltd Tokushukanyushakarano koshorihoshiki
JPS52137907A (en) * 1976-05-14 1977-11-17 Hitachi Ltd Fax exchange system
JPS53129904A (en) * 1977-04-19 1978-11-13 Fujitsu Ltd Exchange system
JPS53138208A (en) * 1977-05-09 1978-12-02 Hitachi Ltd Loss compensation system of exchange using semiconductor channel switch
JPS54118109A (en) * 1978-03-07 1979-09-13 Nec Corp Subscriber line storage system for time division exchange
JPS5757681U (pl) * 1981-08-13 1982-04-05
JPS63309091A (ja) * 1987-06-10 1988-12-16 Meisei Electric Co Ltd 長距離内線付加装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306982A (en) * 1962-03-30 1967-02-28 Ericsson Telefon Ab L M Level control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306982A (en) * 1962-03-30 1967-02-28 Ericsson Telefon Ab L M Level control device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150604A (ja) * 1974-10-30 1976-05-04 Hitachi Ltd Tokushukanyushakarano koshorihoshiki
JPS5625074B2 (pl) * 1974-10-30 1981-06-10
JPS52137907A (en) * 1976-05-14 1977-11-17 Hitachi Ltd Fax exchange system
JPS53129904A (en) * 1977-04-19 1978-11-13 Fujitsu Ltd Exchange system
JPS53138208A (en) * 1977-05-09 1978-12-02 Hitachi Ltd Loss compensation system of exchange using semiconductor channel switch
JPS54118109A (en) * 1978-03-07 1979-09-13 Nec Corp Subscriber line storage system for time division exchange
JPS5757681U (pl) * 1981-08-13 1982-04-05
JPS63309091A (ja) * 1987-06-10 1988-12-16 Meisei Electric Co Ltd 長距離内線付加装置

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