JPH0242267B2 - - Google Patents

Info

Publication number
JPH0242267B2
JPH0242267B2 JP59030844A JP3084484A JPH0242267B2 JP H0242267 B2 JPH0242267 B2 JP H0242267B2 JP 59030844 A JP59030844 A JP 59030844A JP 3084484 A JP3084484 A JP 3084484A JP H0242267 B2 JPH0242267 B2 JP H0242267B2
Authority
JP
Japan
Prior art keywords
volume
speaker
call
variable resistor
pass filter
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 - Lifetime
Application number
JP59030844A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60174556A (ja
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 filed Critical
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 JPS60174556A (ja) 1985-09-07
JPH0242267B2 true JPH0242267B2 (enrdf_load_html_response) 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_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0783397B2 (ja) * 1985-09-30 1995-09-06 株式会社東芝 電話装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531165B2 (enrdf_load_html_response) * 1974-04-08 1978-01-17

Also Published As

Publication number Publication date
JPS60174556A (ja) 1985-09-07

Similar Documents

Publication Publication Date Title
US4058678A (en) Remote signalling to a telephone line utilizing power line carrier signals
US5794163A (en) Headset for hands-free wireless telephone
US4829565A (en) Telephone with background volume control
JPH09168046A (ja) 送話器、それを用いた電話機及び電話機の音声入力補償方法
US3602648A (en) Subscriber telephone circuit
US5533119A (en) Method and apparatus for sidetone optimization
JP3342642B2 (ja) 電話送受器インタフェース装置
EP0565614A1 (en) Voice-switched handset receive amplifier
JPH0242267B2 (enrdf_load_html_response)
JP3855014B2 (ja) 携帯電話用ページングアンプ
US2269565A (en) Communication system
US4518829A (en) Two terminal microphone active load gain regulation circuit
JPH01123554A (ja) 電話機
JPH0630090A (ja) 音量制御機能付き電話機
JP2894882B2 (ja) ハンズフリー電話装置
US4514596A (en) Telephone handsets
JPH1070600A (ja) 電話機
JP2789997B2 (ja) 電話装置
JP2003198715A (ja) 移動体電話機
JPH0537571Y2 (enrdf_load_html_response)
JPH036057Y2 (enrdf_load_html_response)
JPS63191447A (ja) 電子電話機
JP2000115391A (ja) ドアホン装置
JPH0440142A (ja) 自動音量調節付き電話機
JPS5923140B2 (ja) Ａｃ電力線搬送波増設電話システム

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term