JPH0153825B2 - - Google Patents

Info

Publication number
JPH0153825B2
JPH0153825B2 JP15985682A JP15985682A JPH0153825B2 JP H0153825 B2 JPH0153825 B2 JP H0153825B2 JP 15985682 A JP15985682 A JP 15985682A JP 15985682 A JP15985682 A JP 15985682A JP H0153825 B2 JPH0153825 B2 JP H0153825B2
Authority
JP
Japan
Prior art keywords
call
transmitter
resistor
bias current
circuit
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
JP15985682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5949046A (ja
Inventor
Nobuo Matoba
Masashi Suzuki
Shinichi Sekiguchi
Takashi Hayashi
Sachio Aoyama
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 JPS5949046A (ja) 1984-03-21
JPH0153825B2 true 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)

Families Citing this family (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
JPS5949046A (ja) 1984-03-21

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