JPH0253998B2 - - Google Patents

Info

Publication number
JPH0253998B2
JPH0253998B2 JP59175943A JP17594384A JPH0253998B2 JP H0253998 B2 JPH0253998 B2 JP H0253998B2 JP 59175943 A JP59175943 A JP 59175943A JP 17594384 A JP17594384 A JP 17594384A JP H0253998 B2 JPH0253998 B2 JP H0253998B2
Authority
JP
Japan
Prior art keywords
telephone
circuit
call
polarity
supply
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
JP59175943A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6154754A (ja
Inventor
Nobuo Matoba
Hisanori Suzuki
Shohei Uchino
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 JP59175943A priority Critical patent/JPS6154754A/ja
Publication of JPS6154754A publication Critical patent/JPS6154754A/ja
Publication of JPH0253998B2 publication Critical patent/JPH0253998B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP59175943A 1984-08-24 1984-08-24 電話交換装置 Granted JPS6154754A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59175943A JPS6154754A (ja) 1984-08-24 1984-08-24 電話交換装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59175943A JPS6154754A (ja) 1984-08-24 1984-08-24 電話交換装置

Publications (2)

Publication Number Publication Date
JPS6154754A JPS6154754A (ja) 1986-03-19
JPH0253998B2 true JPH0253998B2 (enrdf_load_stackoverflow) 1990-11-20

Family

ID=16004966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59175943A Granted JPS6154754A (ja) 1984-08-24 1984-08-24 電話交換装置

Country Status (1)

Country Link
JP (1) JPS6154754A (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168567A (en) * 1981-04-10 1982-10-16 Hitachi Ltd Electric power feeding system
JPS5937758A (ja) * 1982-08-26 1984-03-01 Hitoshi Ito 増幅回路

Also Published As

Publication number Publication date
JPS6154754A (ja) 1986-03-19

Similar Documents

Publication Publication Date Title
US5432835A (en) Telephone device for amplifying opposite party's voice after user's telephone is placed on-hook
JPH0370951B2 (enrdf_load_stackoverflow)
JP2888517B2 (ja) コードレス電話装置
JPH0728436B2 (ja) 構内電話交換機
JPH0253998B2 (enrdf_load_stackoverflow)
JPH0158918B2 (enrdf_load_stackoverflow)
JP2738481B2 (ja) ナースコール装置
JPH0252915B2 (enrdf_load_stackoverflow)
JPH0733479Y2 (ja) ピンク電話機切換装置
JP2793202B2 (ja) 電話機
JPS6010896A (ja) 局線回路
JP2561456B2 (ja) ボタン電話装置
JP2528507Y2 (ja) 電話回線の交流信号受信回路
JPS63263994A (ja) 電話装置
JPH0537592Y2 (enrdf_load_stackoverflow)
JP2581659Y2 (ja) 簡易電話交換装置
JPS63173444A (ja) 電話機
JPS63258192A (ja) 電話装置
JPH01176152A (ja) 簡易交換機
JPH04239850A (ja) コードレス電話装置
JPS6236424B2 (enrdf_load_stackoverflow)
JPH01288145A (ja) 拡声通話終話時のハウリング防止方式
JPS63285099A (ja) 電話装置
JPS643418B2 (enrdf_load_stackoverflow)
JPS61267494A (ja) 構内電子交換機