JPS643356U - - Google Patents

Info

Publication number
JPS643356U
JPS643356U JP9728787U JP9728787U JPS643356U JP S643356 U JPS643356 U JP S643356U JP 9728787 U JP9728787 U JP 9728787U JP 9728787 U JP9728787 U JP 9728787U JP S643356 U JPS643356 U JP S643356U
Authority
JP
Japan
Prior art keywords
detection
dsc
photocoupler
control circuit
network control
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
JP9728787U
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 JP9728787U priority Critical patent/JPS643356U/ja
Publication of JPS643356U publication Critical patent/JPS643356U/ja
Pending legal-status Critical Current

Links

JP9728787U 1987-06-26 1987-06-26 Pending JPS643356U (US08197722-20120612-C00093.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9728787U JPS643356U (US08197722-20120612-C00093.png) 1987-06-26 1987-06-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9728787U JPS643356U (US08197722-20120612-C00093.png) 1987-06-26 1987-06-26

Publications (1)

Publication Number Publication Date
JPS643356U true JPS643356U (US08197722-20120612-C00093.png) 1989-01-10

Family

ID=31322618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9728787U Pending JPS643356U (US08197722-20120612-C00093.png) 1987-06-26 1987-06-26

Country Status (1)

Country Link
JP (1) JPS643356U (US08197722-20120612-C00093.png)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059855A (ja) * 1983-09-12 1985-04-06 Nec Corp 着信信号および相手応答検出回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059855A (ja) * 1983-09-12 1985-04-06 Nec Corp 着信信号および相手応答検出回路

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