JPS5851664A - インターホンの呼出回路 - Google Patents

インターホンの呼出回路

Info

Publication number
JPS5851664A
JPS5851664A JP56150283A JP15028381A JPS5851664A JP S5851664 A JPS5851664 A JP S5851664A JP 56150283 A JP56150283 A JP 56150283A JP 15028381 A JP15028381 A JP 15028381A JP S5851664 A JPS5851664 A JP S5851664A
Authority
JP
Japan
Prior art keywords
current
circuit
switches
turned
resistor
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.)
Granted
Application number
JP56150283A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6321382B2 (enrdf_load_stackoverflow
Inventor
Kouzou Kasao
笠尾　幸三
Masashi Suzuki
正志 鈴木
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56150283A priority Critical patent/JPS5851664A/ja
Publication of JPS5851664A publication Critical patent/JPS5851664A/ja
Publication of JPS6321382B2 publication Critical patent/JPS6321382B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP56150283A 1981-09-22 1981-09-22 インターホンの呼出回路 Granted JPS5851664A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56150283A JPS5851664A (ja) 1981-09-22 1981-09-22 インターホンの呼出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56150283A JPS5851664A (ja) 1981-09-22 1981-09-22 インターホンの呼出回路

Publications (2)

Publication Number Publication Date
JPS5851664A true JPS5851664A (ja) 1983-03-26
JPS6321382B2 JPS6321382B2 (enrdf_load_stackoverflow) 1988-05-06

Family

ID=15493584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56150283A Granted JPS5851664A (ja) 1981-09-22 1981-09-22 インターホンの呼出回路

Country Status (1)

Country Link
JP (1) JPS5851664A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09183367A (ja) * 1995-12-28 1997-07-15 Nec Corp 指定席管理システム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107609A (en) * 1978-02-13 1979-08-23 Hitachi Ltd Overcurrent automatic interruption system for telephone exchanger subscribing circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107609A (en) * 1978-02-13 1979-08-23 Hitachi Ltd Overcurrent automatic interruption system for telephone exchanger subscribing circuit

Also Published As

Publication number Publication date
JPS6321382B2 (enrdf_load_stackoverflow) 1988-05-06

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