JPS6429976U - - Google Patents

Info

Publication number
JPS6429976U
JPS6429976U JP12407287U JP12407287U JPS6429976U JP S6429976 U JPS6429976 U JP S6429976U JP 12407287 U JP12407287 U JP 12407287U JP 12407287 U JP12407287 U JP 12407287U JP S6429976 U JPS6429976 U JP S6429976U
Authority
JP
Japan
Prior art keywords
call
telephone
switch
line
ringing signal
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
JP12407287U
Other languages
English (en)
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 JP12407287U priority Critical patent/JPS6429976U/ja
Publication of JPS6429976U publication Critical patent/JPS6429976U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP12407287U 1987-08-13 1987-08-13 Pending JPS6429976U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12407287U JPS6429976U (zh) 1987-08-13 1987-08-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12407287U JPS6429976U (zh) 1987-08-13 1987-08-13

Publications (1)

Publication Number Publication Date
JPS6429976U true JPS6429976U (zh) 1989-02-22

Family

ID=31373488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12407287U Pending JPS6429976U (zh) 1987-08-13 1987-08-13

Country Status (1)

Country Link
JP (1) JPS6429976U (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240605B2 (zh) * 1974-07-21 1977-10-13
JPS61177097A (ja) * 1985-01-31 1986-08-08 Toshiba Corp ボタン電話装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240605B2 (zh) * 1974-07-21 1977-10-13
JPS61177097A (ja) * 1985-01-31 1986-08-08 Toshiba Corp ボタン電話装置

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