JPS57159158A - Audio switch circuit - Google Patents

Audio switch circuit

Info

Publication number
JPS57159158A
JPS57159158A JP4379881A JP4379881A JPS57159158A JP S57159158 A JPS57159158 A JP S57159158A JP 4379881 A JP4379881 A JP 4379881A JP 4379881 A JP4379881 A JP 4379881A JP S57159158 A JPS57159158 A JP S57159158A
Authority
JP
Japan
Prior art keywords
transmission
signal
circuit
component
transmission signal
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
JP4379881A
Other languages
English (en)
Inventor
Hiroyuki Mori
Yozo Sudo
Toru Yokoyama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4379881A priority Critical patent/JPS57159158A/ja
Publication of JPS57159158A publication Critical patent/JPS57159158A/ja
Pending 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
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
JP4379881A 1981-03-25 1981-03-25 Audio switch circuit Pending JPS57159158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4379881A JPS57159158A (en) 1981-03-25 1981-03-25 Audio switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4379881A JPS57159158A (en) 1981-03-25 1981-03-25 Audio switch circuit

Publications (1)

Publication Number Publication Date
JPS57159158A true JPS57159158A (en) 1982-10-01

Family

ID=12673760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4379881A Pending JPS57159158A (en) 1981-03-25 1981-03-25 Audio switch circuit

Country Status (1)

Country Link
JP (1) JPS57159158A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195055A (ja) * 1985-02-25 1986-08-29 Matsushita Electric Works Ltd 拡声電話機の音声スイツチ回路
JPS6212249A (ja) * 1985-07-09 1987-01-21 Toa Tokushu Denki Kk 音声スイツチ装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195055A (ja) * 1985-02-25 1986-08-29 Matsushita Electric Works Ltd 拡声電話機の音声スイツチ回路
JPS6212249A (ja) * 1985-07-09 1987-01-21 Toa Tokushu Denki Kk 音声スイツチ装置
JPH055420B2 (ja) * 1985-07-09 1993-01-22 Toa Electric Co Ltd

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