JPS58143661A - モニタ機能付インタ−ホン装置 - Google Patents

モニタ機能付インタ−ホン装置

Info

Publication number
JPS58143661A
JPS58143661A JP2646382A JP2646382A JPS58143661A JP S58143661 A JPS58143661 A JP S58143661A JP 2646382 A JP2646382 A JP 2646382A JP 2646382 A JP2646382 A JP 2646382A JP S58143661 A JPS58143661 A JP S58143661A
Authority
JP
Japan
Prior art keywords
loudspeaker
switching element
station
hook switch
handset
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
JP2646382A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0134418B2 (forum.php
Inventor
Mitsutoshi Tanaka
光利 田中
Kazumi Kitagawa
和美 北川
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.)
AIHON KK
Aiphone Co Ltd
Original Assignee
AIHON KK
Aiphone 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 AIHON KK, Aiphone Co Ltd filed Critical AIHON KK
Priority to JP2646382A priority Critical patent/JPS58143661A/ja
Publication of JPS58143661A publication Critical patent/JPS58143661A/ja
Publication of JPH0134418B2 publication Critical patent/JPH0134418B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP2646382A 1982-02-19 1982-02-19 モニタ機能付インタ−ホン装置 Granted JPS58143661A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2646382A JPS58143661A (ja) 1982-02-19 1982-02-19 モニタ機能付インタ−ホン装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2646382A JPS58143661A (ja) 1982-02-19 1982-02-19 モニタ機能付インタ−ホン装置

Publications (2)

Publication Number Publication Date
JPS58143661A true JPS58143661A (ja) 1983-08-26
JPH0134418B2 JPH0134418B2 (forum.php) 1989-07-19

Family

ID=12194201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2646382A Granted JPS58143661A (ja) 1982-02-19 1982-02-19 モニタ機能付インタ−ホン装置

Country Status (1)

Country Link
JP (1) JPS58143661A (forum.php)

Also Published As

Publication number Publication date
JPH0134418B2 (forum.php) 1989-07-19

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