JPS6226216B2 - - Google Patents

Info

Publication number
JPS6226216B2
JPS6226216B2 JP19810781A JP19810781A JPS6226216B2 JP S6226216 B2 JPS6226216 B2 JP S6226216B2 JP 19810781 A JP19810781 A JP 19810781A JP 19810781 A JP19810781 A JP 19810781A JP S6226216 B2 JPS6226216 B2 JP S6226216B2
Authority
JP
Japan
Prior art keywords
speaker
input
varistor
input signal
microphone
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.)
Expired
Application number
JP19810781A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5899056A (ja
Inventor
Koji Nomura
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 JP56198107A priority Critical patent/JPS5899056A/ja
Publication of JPS5899056A publication Critical patent/JPS5899056A/ja
Publication of JPS6226216B2 publication Critical patent/JPS6226216B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP56198107A 1981-12-08 1981-12-08 インタ−ホン装置 Granted JPS5899056A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56198107A JPS5899056A (ja) 1981-12-08 1981-12-08 インタ−ホン装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56198107A JPS5899056A (ja) 1981-12-08 1981-12-08 インタ−ホン装置

Publications (2)

Publication Number Publication Date
JPS5899056A JPS5899056A (ja) 1983-06-13
JPS6226216B2 true JPS6226216B2 (enrdf_load_stackoverflow) 1987-06-08

Family

ID=16385594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56198107A Granted JPS5899056A (ja) 1981-12-08 1981-12-08 インタ−ホン装置

Country Status (1)

Country Link
JP (1) JPS5899056A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS5899056A (ja) 1983-06-13

Similar Documents

Publication Publication Date Title
US4025728A (en) Speaker telephone
GB916545A (en) Improvements in or relating to loud speaking telephone sets
US6292560B1 (en) Click-free muting circuit for headset
US3691311A (en) Telephone user set
US3708630A (en) Telephone circuits utilizing active elements
GB2125657A (en) Loudspeaker telephone system
US3100818A (en) Communication systems
US3075045A (en) Speakerphone
US6751316B1 (en) Click-free muting circuit for headset
JPH0425745B2 (enrdf_load_stackoverflow)
JPS6226216B2 (enrdf_load_stackoverflow)
GB2076264A (en) A voice switch for hands free communication apparatus
US3136864A (en) Loudspeaking telephone with electronic voice switching
US4164709A (en) Signal priority device
JP2659358B2 (ja) ハンドフリー型電話機
US4385207A (en) Line powered transformerless loudspeaking telephone
US3238302A (en) Intercommunication system
US3909548A (en) Speaker telephone
CA2291884C (en) Click-free muting circuit for headset
JP2659359B2 (ja) ハンドフリー型電話機
JPS6336757Y2 (enrdf_load_stackoverflow)
JPS6141258A (ja) 電話機
JPH073720Y2 (ja) 拡声交互通話インターホン装置
US4085290A (en) Telephone conference amplifier
JPH0241226B2 (enrdf_load_stackoverflow)