KR100339260B1 - 전화가입자선회로,부품및방법 - Google Patents

전화가입자선회로,부품및방법 Download PDF

Info

Publication number
KR100339260B1
KR100339260B1 KR1019940702977A KR19940702977A KR100339260B1 KR 100339260 B1 KR100339260 B1 KR 100339260B1 KR 1019940702977 A KR1019940702977 A KR 1019940702977A KR 19940702977 A KR19940702977 A KR 19940702977A KR 100339260 B1 KR100339260 B1 KR 100339260B1
Authority
KR
South Korea
Prior art keywords
methods
subscriber line
circuit components
line circuit
telephone subscriber
Prior art date
Application number
KR1019940702977A
Other languages
English (en)
Other versions
KR950700656A (ko
Inventor
존 에스. 프렌티스
Original Assignee
해리스 코포레이션
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 해리스 코포레이션 filed Critical 해리스 코포레이션
Publication of KR950700656A publication Critical patent/KR950700656A/ko
Application granted granted Critical
Publication of KR100339260B1 publication Critical patent/KR100339260B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Electronic Switches (AREA)
  • Amplifiers (AREA)
KR1019940702977A 1992-02-25 1994-08-25 전화가입자선회로,부품및방법 KR100339260B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US840,547 1992-02-25
US07/840,547 US5745563A (en) 1992-02-25 1992-02-25 Telephone subscriber line circuit, components and methods

Publications (2)

Publication Number Publication Date
KR950700656A KR950700656A (ko) 1995-01-16
KR100339260B1 true KR100339260B1 (ko) 2002-10-31

Family

ID=25282654

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940702977A KR100339260B1 (ko) 1992-02-25 1994-08-25 전화가입자선회로,부품및방법

Country Status (7)

Country Link
US (1) US5745563A (ko)
EP (1) EP0628231B1 (ko)
JP (1) JP3561271B2 (ko)
KR (1) KR100339260B1 (ko)
CA (1) CA2130183A1 (ko)
DE (1) DE69303163T2 (ko)
WO (1) WO1993017514A1 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3599503B2 (ja) * 1996-11-25 2004-12-08 沖電気工業株式会社 高電圧検出回路とベル信号検出回路とノーリンギング着信検出回路
AT408170B (de) * 1999-09-15 2001-09-25 Ericsson Austria Ag Nachrichtenübertragungssystem
US7486787B2 (en) * 2000-06-30 2009-02-03 Silicon Laboratories, Inc. Subscriber line interface circuitry with common base audio isolation stage
US7512647B2 (en) * 2004-11-22 2009-03-31 Analog Devices, Inc. Condensed Galois field computing system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931475A (en) * 1973-12-21 1976-01-06 Licentia Patent-Verwaltungs-Gmbh Electronic switches and switch networks
EP0339719A1 (en) * 1988-04-25 1989-11-02 AT&T NETWORK SYSTEMS INTERNATIONAL B.V. Switching matrix for telecommunication exchanges

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965769A (en) * 1956-06-15 1960-12-20 Cons Electrodynamics Corp Transistor switch
US3515906A (en) * 1966-07-01 1970-06-02 Gen Telephone & Elect Bilateral analog switch
US3719833A (en) * 1970-10-12 1973-03-06 Motorola Inc Technique for compensating for input bias currents of transistors
US3697772A (en) * 1971-02-01 1972-10-10 Ralph Stuart Gibbs Solid state relay
US3711728A (en) * 1971-08-19 1973-01-16 F Villella Solid state double-pole double-throw relay
BE788334A (fr) * 1971-09-03 1973-03-05 Westinghouse Electric Corp Porte de transfert
JPS5638064B2 (ko) * 1974-04-02 1981-09-03
GB1490005A (en) * 1975-11-03 1977-10-26 Mullard Ltd High voltage ac to low voltage dc switching interface circuit
US4031432A (en) * 1975-11-05 1977-06-21 Proctor And Associates Company Solid state switching circuit and method for simulating a relay
JPS52131449A (en) * 1976-04-28 1977-11-04 Hitachi Ltd Semiconductor switch circuit
DE2644402C2 (de) * 1976-10-01 1978-08-24 Standard Elektrik Lorenz Ag, 7000 Stuttgart Elektronischer Schalter
GB1561123A (en) * 1977-05-10 1980-02-13 Tokyo Shibaura Electric Co Switching circuit
US4631362A (en) * 1984-09-27 1986-12-23 At&T Bell Laboratories Low resistance origination scan circuit
US4712233A (en) * 1985-04-22 1987-12-08 Fairchild Camera & Instrument Corp. Monolithic telephone subscriber line interface circuit
AU574277B2 (en) * 1985-08-20 1988-06-30 Fujitsu Limited Subscriber line interface circuit
US4945259A (en) * 1988-11-10 1990-07-31 Burr-Brown Corporation Bias voltage generator and method
JPH0666600B2 (ja) * 1989-10-02 1994-08-24 株式会社東芝 電流検出回路
US5214329A (en) * 1989-12-07 1993-05-25 Harris Corporation Bias current modulation for differentially coupled transistor circuit
US5270569A (en) * 1990-01-24 1993-12-14 Harris Corporation Method and device in which bottoming of a well in a dielectrically isolated island is assured
JPH04229715A (ja) * 1990-11-15 1992-08-19 Toshiba Corp 双方向スイッチ回路
US5155394A (en) * 1991-02-12 1992-10-13 National Semiconductor Corporation Bias distribution circuit and method using FET and bipolar

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931475A (en) * 1973-12-21 1976-01-06 Licentia Patent-Verwaltungs-Gmbh Electronic switches and switch networks
EP0339719A1 (en) * 1988-04-25 1989-11-02 AT&T NETWORK SYSTEMS INTERNATIONAL B.V. Switching matrix for telecommunication exchanges

Also Published As

Publication number Publication date
JPH07505266A (ja) 1995-06-08
EP0628231B1 (en) 1996-06-12
JP3561271B2 (ja) 2004-09-02
WO1993017514A1 (en) 1993-09-02
DE69303163T2 (de) 1997-01-16
CA2130183A1 (en) 1993-09-02
KR950700656A (ko) 1995-01-16
DE69303163D1 (de) 1996-07-18
EP0628231A1 (en) 1994-12-14
US5745563A (en) 1998-04-28

Similar Documents

Publication Publication Date Title
EP0523617A3 (en) Teleconference terminal equipment and teleconference module
HU9302171D0 (en) Method and circuit arrangement for receiving and transferring telephone calls
SG70970A1 (en) Portable telephone set and portable telecommunications apparatus
AU118083S (en) Telephone
EP0484051A3 (en) Telephone interface circuit
IL103366A0 (en) Telecommunications terminal block
GB2253323B (en) Telecommunications networks and methods
GB9408283D0 (en) Telephone line interface circuit
KR100339260B1 (ko) 전화가입자선회로,부품및방법
GB2251359B (en) Telephone circuit
GB9205553D0 (en) Terminal for telegraph and telephone
GB2250663B (en) Telephone ringer circuit
GB2289187B (en) Telephone line interface circuit
GB9419127D0 (en) Telephone circuit
GB2269961B (en) Telephone call barring circuit
GB2313252B (en) Telephone line interfacing circuit and method
HU9300830D0 (en) Circuit arrangement for telephone terminal units
GB2256342B (en) Telephone handset
GB9200017D0 (en) Device for changing over and restoring automatically telephone circuit
CS134391A3 (en) Circuit for multimetering of telephone calls in local communication
CA70617S (en) Telephone handset
CA70926S (en) Telephone handset
CA71899S (en) Telephone handset
CA71674S (en) Telephone handset
CA70927S (en) Telephone handset

Legal Events

Date Code Title Description
A201 Request for examination
AMND Amendment
E902 Notification of reason for refusal
AMND Amendment
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
J201 Request for trial against refusal decision
AMND Amendment
E801 Decision on dismissal of amendment
J301 Trial decision

Free format text: TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE AMENDMENT REQUESTED 20011224

Effective date: 20020328

S901 Examination by remand of revocation
GRNO Decision to grant (after opposition)
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee