JPS5949046A - 通話音量切替え回路 - Google Patents

通話音量切替え回路

Info

Publication number
JPS5949046A
JPS5949046A JP57159856A JP15985682A JPS5949046A JP S5949046 A JPS5949046 A JP S5949046A JP 57159856 A JP57159856 A JP 57159856A JP 15985682 A JP15985682 A JP 15985682A JP S5949046 A JPS5949046 A JP S5949046A
Authority
JP
Japan
Prior art keywords
transmitter
call
extension
sound volume
resistance
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
JP57159856A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0153825B2 (enrdf_load_stackoverflow
Inventor
Nobuo Matoba
的場　信夫
Masashi Suzuki
正志 鈴木
Shinichi Sekiguchi
慎一 関口
Takashi Hayashi
隆 林
Sachio Aoyama
青山　佐千男
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 JP57159856A priority Critical patent/JPS5949046A/ja
Publication of JPS5949046A publication Critical patent/JPS5949046A/ja
Publication of JPH0153825B2 publication Critical patent/JPH0153825B2/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP57159856A 1982-09-14 1982-09-14 通話音量切替え回路 Granted JPS5949046A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57159856A JPS5949046A (ja) 1982-09-14 1982-09-14 通話音量切替え回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57159856A JPS5949046A (ja) 1982-09-14 1982-09-14 通話音量切替え回路

Publications (2)

Publication Number Publication Date
JPS5949046A true JPS5949046A (ja) 1984-03-21
JPH0153825B2 JPH0153825B2 (enrdf_load_stackoverflow) 1989-11-15

Family

ID=15702719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57159856A Granted JPS5949046A (ja) 1982-09-14 1982-09-14 通話音量切替え回路

Country Status (1)

Country Link
JP (1) JPS5949046A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171296A (ja) * 1985-01-25 1986-08-01 Toshiba Corp ボタン電話装置の通話音声調整方式

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171296A (ja) * 1985-01-25 1986-08-01 Toshiba Corp ボタン電話装置の通話音声調整方式

Also Published As

Publication number Publication date
JPH0153825B2 (enrdf_load_stackoverflow) 1989-11-15

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