JPS60158756A - 親子式インタ−ホン - Google Patents

親子式インタ−ホン

Info

Publication number
JPS60158756A
JPS60158756A JP59013826A JP1382684A JPS60158756A JP S60158756 A JPS60158756 A JP S60158756A JP 59013826 A JP59013826 A JP 59013826A JP 1382684 A JP1382684 A JP 1382684A JP S60158756 A JPS60158756 A JP S60158756A
Authority
JP
Japan
Prior art keywords
circuit
slave
observation
signal
child
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
JP59013826A
Other languages
English (en)
Japanese (ja)
Other versions
JPH033435B2 (enrdf_load_stackoverflow
Inventor
Shoichi Sato
佐藤 章一
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.)
Toa Corp
Toa Tokushu Denki KK
Original Assignee
Toa Electric Co Ltd
Toa Tokushu Denki KK
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 Toa Electric Co Ltd, Toa Tokushu Denki KK filed Critical Toa Electric Co Ltd
Priority to JP59013826A priority Critical patent/JPS60158756A/ja
Publication of JPS60158756A publication Critical patent/JPS60158756A/ja
Publication of JPH033435B2 publication Critical patent/JPH033435B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/71Substation extension arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP59013826A 1984-01-27 1984-01-27 親子式インタ−ホン Granted JPS60158756A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59013826A JPS60158756A (ja) 1984-01-27 1984-01-27 親子式インタ−ホン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59013826A JPS60158756A (ja) 1984-01-27 1984-01-27 親子式インタ−ホン

Publications (2)

Publication Number Publication Date
JPS60158756A true JPS60158756A (ja) 1985-08-20
JPH033435B2 JPH033435B2 (enrdf_load_stackoverflow) 1991-01-18

Family

ID=11844072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59013826A Granted JPS60158756A (ja) 1984-01-27 1984-01-27 親子式インタ−ホン

Country Status (1)

Country Link
JP (1) JPS60158756A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02268550A (ja) * 1989-04-10 1990-11-02 Hideo Ishii 構内有線通信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02268550A (ja) * 1989-04-10 1990-11-02 Hideo Ishii 構内有線通信装置

Also Published As

Publication number Publication date
JPH033435B2 (enrdf_load_stackoverflow) 1991-01-18

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