JPS60174556A - 電話装置 - Google Patents

電話装置

Info

Publication number
JPS60174556A
JPS60174556A JP3084484A JP3084484A JPS60174556A JP S60174556 A JPS60174556 A JP S60174556A JP 3084484 A JP3084484 A JP 3084484A JP 3084484 A JP3084484 A JP 3084484A JP S60174556 A JPS60174556 A JP S60174556A
Authority
JP
Japan
Prior art keywords
speaker
variable resistor
signal
sound volume
incoming
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
JP3084484A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0242267B2 (enrdf_load_stackoverflow
Inventor
Shinichi Sekiguchi
慎一 関口
Kenzaburo Nakajima
中島　健三郎
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 JP3084484A priority Critical patent/JPS60174556A/ja
Publication of JPS60174556A publication Critical patent/JPS60174556A/ja
Publication of JPH0242267B2 publication Critical patent/JPH0242267B2/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
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP3084484A 1984-02-21 1984-02-21 電話装置 Granted JPS60174556A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3084484A JPS60174556A (ja) 1984-02-21 1984-02-21 電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3084484A JPS60174556A (ja) 1984-02-21 1984-02-21 電話装置

Publications (2)

Publication Number Publication Date
JPS60174556A true JPS60174556A (ja) 1985-09-07
JPH0242267B2 JPH0242267B2 (enrdf_load_stackoverflow) 1990-09-21

Family

ID=12315005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3084484A Granted JPS60174556A (ja) 1984-02-21 1984-02-21 電話装置

Country Status (1)

Country Link
JP (1) JPS60174556A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6276847A (ja) * 1985-09-30 1987-04-08 Toshiba Corp 電話装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133710A (enrdf_load_stackoverflow) * 1974-04-08 1975-10-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133710A (enrdf_load_stackoverflow) * 1974-04-08 1975-10-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6276847A (ja) * 1985-09-30 1987-04-08 Toshiba Corp 電話装置

Also Published As

Publication number Publication date
JPH0242267B2 (enrdf_load_stackoverflow) 1990-09-21

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term