JPH0351350B2 - - Google Patents

Info

Publication number
JPH0351350B2
JPH0351350B2 JP23445284A JP23445284A JPH0351350B2 JP H0351350 B2 JPH0351350 B2 JP H0351350B2 JP 23445284 A JP23445284 A JP 23445284A JP 23445284 A JP23445284 A JP 23445284A JP H0351350 B2 JPH0351350 B2 JP H0351350B2
Authority
JP
Japan
Prior art keywords
current
circuit
power supply
voltage
subscriber
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
JP23445284A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61113354A (ja
Inventor
Masahiko Oono
Akira Ishizawa
Shinji Nanba
Shiro Enami
Makoto Hashimoto
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Oki Electric Industry Co Ltd
NTT Inc
Original Assignee
Fujitsu Ltd
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric 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 Fujitsu Ltd, Hitachi Ltd, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP59234452A priority Critical patent/JPS61113354A/ja
Publication of JPS61113354A publication Critical patent/JPS61113354A/ja
Publication of JPH0351350B2 publication Critical patent/JPH0351350B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/08Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP59234452A 1984-11-07 1984-11-07 公衆電話機用加入者回路 Granted JPS61113354A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59234452A JPS61113354A (ja) 1984-11-07 1984-11-07 公衆電話機用加入者回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59234452A JPS61113354A (ja) 1984-11-07 1984-11-07 公衆電話機用加入者回路

Publications (2)

Publication Number Publication Date
JPS61113354A JPS61113354A (ja) 1986-05-31
JPH0351350B2 true JPH0351350B2 (show.php) 1991-08-06

Family

ID=16971216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59234452A Granted JPS61113354A (ja) 1984-11-07 1984-11-07 公衆電話機用加入者回路

Country Status (1)

Country Link
JP (1) JPS61113354A (show.php)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203052A (ja) * 1987-02-18 1988-08-22 Fujitsu Ltd 直流給電回路
JP3063633B2 (ja) * 1996-08-15 2000-07-12 日本電気株式会社 加入者回路

Also Published As

Publication number Publication date
JPS61113354A (ja) 1986-05-31

Similar Documents

Publication Publication Date Title
US5052039A (en) Line interface circuit
EP0096965B1 (en) Active impedance transformer assisted line feed circuit
EP0212632B1 (en) Subscriber line interface circuit
CA1177986A (en) Balanced current multiplier circuit for a subscriber loop interface circuit
US5940498A (en) Electronic voice circuit configuration
JPS5936467B2 (ja) ライン回路
US4539438A (en) Active impedance transformer assisted line feed circuit with supervision filtering
EP0186214B1 (en) Battery-feed circuit for exchange
US5706343A (en) Integrated interface circuit for driving a subscriber line
JPH0351350B2 (show.php)
US4361732A (en) Trunk interface circuit with current compensation
US4767980A (en) Inductance multiplier circuit
US4588860A (en) Battery feed circuit for telephone subscriber line
BE898049A (nl) Telecommunicatielijnketen en bijbehorende spanningsomzetter.
EP0096473B1 (en) Active impedance line feed circuit
US5347575A (en) Circuit to detect the hook status and ringing at the CPE end of a telephone network
US3899646A (en) Telephone set speech network
JPH06205131A (ja) モデムを有する電話装置
CA1196433A (en) Active impedance transformer assisted line feed circuit with supervision filtering
JP3917402B2 (ja) 電力供給回路
JPS6230546B2 (show.php)
JPH0232837B2 (ja) Kanyushakairo
JPS6216059B2 (show.php)
JPS6028365A (ja) 平衡回路網
JPH0389765A (ja) 電話機