KR950012585B1 - 양방향 다이얼링 트렁크 인터페이싱회로 - Google Patents

양방향 다이얼링 트렁크 인터페이싱회로 Download PDF

Info

Publication number
KR950012585B1
KR950012585B1 KR1019920007883A KR920007883A KR950012585B1 KR 950012585 B1 KR950012585 B1 KR 950012585B1 KR 1019920007883 A KR1019920007883 A KR 1019920007883A KR 920007883 A KR920007883 A KR 920007883A KR 950012585 B1 KR950012585 B1 KR 950012585B1
Authority
KR
South Korea
Prior art keywords
circuit
signal
output
low impedance
diod
Prior art date
Application number
KR1019920007883A
Other languages
English (en)
Korean (ko)
Other versions
KR930024387A (ko
Inventor
민경화
Original Assignee
삼성전자주식회사
정용문
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 삼성전자주식회사, 정용문 filed Critical 삼성전자주식회사
Priority to KR1019920007883A priority Critical patent/KR950012585B1/ko
Priority to DK199300531A priority patent/DK176293B1/da
Priority to DE4315243A priority patent/DE4315243B4/de
Priority to NL9300792A priority patent/NL194109C/nl
Publication of KR930024387A publication Critical patent/KR930024387A/ko
Application granted granted Critical
Publication of KR950012585B1 publication Critical patent/KR950012585B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • H04Q3/627—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
KR1019920007883A 1992-05-09 1992-05-09 양방향 다이얼링 트렁크 인터페이싱회로 KR950012585B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019920007883A KR950012585B1 (ko) 1992-05-09 1992-05-09 양방향 다이얼링 트렁크 인터페이싱회로
DK199300531A DK176293B1 (da) 1992-05-09 1993-05-06 Gennemvalgskredslöb
DE4315243A DE4315243B4 (de) 1992-05-09 1993-05-07 Fernverbindungsvorrichtung
NL9300792A NL194109C (nl) 1992-05-09 1993-05-10 Tweerichtings-verbindingskoppelketen voor een elektronisch huistelefoonstelsel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920007883A KR950012585B1 (ko) 1992-05-09 1992-05-09 양방향 다이얼링 트렁크 인터페이싱회로

Publications (2)

Publication Number Publication Date
KR930024387A KR930024387A (ko) 1993-12-22
KR950012585B1 true KR950012585B1 (ko) 1995-10-19

Family

ID=19332903

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920007883A KR950012585B1 (ko) 1992-05-09 1992-05-09 양방향 다이얼링 트렁크 인터페이싱회로

Country Status (4)

Country Link
KR (1) KR950012585B1 (da)
DE (1) DE4315243B4 (da)
DK (1) DK176293B1 (da)
NL (1) NL194109C (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755452A1 (de) * 1997-12-01 1999-06-02 Elmeg Gmbh & Co Kg Kommunikati Telekommunikationseinrichtung und Voice-Server

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748396A (en) * 1971-04-14 1973-07-24 Itt Direct inward dialing trunk circuit
DE3306884A1 (de) * 1983-02-26 1984-08-30 Standard Elektrik Lorenz Ag, 7000 Stuttgart Signalisierungsdetektor fuer fernsprech-nebenstellenanlagen mit durchwahl
DE3328206A1 (de) * 1983-08-04 1985-02-21 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung fuer mehrfrequenzempfaenger mit frequenzauswertung von unterbrechungsfrei empfangenen, sich staendig wechselnden frequenzen in fernsprechanlagen
DE3343646A1 (de) * 1983-12-02 1985-06-13 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum erkennen und auswerten von wechselspannungssignalen auf amtsadern
US4696028A (en) * 1984-03-26 1987-09-22 Dytel Corporation PBX Intercept and caller interactive attendant bypass system
US4955047A (en) * 1984-03-26 1990-09-04 Dytel Corporation Automated attendant with direct inward system access
CA1240088A (en) * 1985-11-20 1988-08-02 Mitel Corporation Solid state trunk circuit
US4914690A (en) * 1988-03-31 1990-04-03 Nicollet Technologies, Inc. Universal PBX interface
DE3822427C2 (de) * 1988-06-30 1997-06-05 Siemens Ag Stromsensor für Durchwahl-Amtssätze
FR2648662B1 (fr) * 1989-06-19 1994-03-18 Alcatel Business Systems Joncteur de ligne reseau analogique pour installation telephonique de type prive

Also Published As

Publication number Publication date
NL194109C (nl) 2001-06-05
NL9300792A (nl) 1993-12-01
DE4315243B4 (de) 2006-05-18
DE4315243A1 (de) 1993-11-11
DK53193D0 (da) 1993-05-06
DK53193A (da) 1993-11-10
NL194109B (nl) 2001-02-01
KR930024387A (ko) 1993-12-22
DK176293B1 (da) 2007-06-18

Similar Documents

Publication Publication Date Title
USRE42590E1 (en) Telephone line coupler
US4723267A (en) Telephone line interface and dialer circuitry for telecommunications equipment
CA1201231A (en) Multiparty line adaptor with privacy feature
US4558183A (en) Opto-coupler interfacing circuit
US4323734A (en) Interface circuit for telephone line to equipment signal coupling
US4894860A (en) Trunk interface circuitry for telephone systems
US3783198A (en) Battery reversal detection
KR100190260B1 (ko) 키 전화기 인터페이스
KR950012585B1 (ko) 양방향 다이얼링 트렁크 인터페이싱회로
US4440979A (en) Current sink for DPT channel unit
US3843844A (en) Subscriber loop circuit apparatus
US4660219A (en) Extension ringing arrangement key telephone system
US6480596B1 (en) Direct inward-outward dialing trunk circuit
US4151377A (en) High impedance loop-seizing and dial pulsing circuit
US3941941A (en) Relayless switching circuit for application of ringing signals
CA1045705A (en) Network path test circuit
CA1088686A (en) Tone applying line circuit
JPH0767131B2 (ja) 網制御回路
KR910002624B1 (ko) 사설 전자교환기에 있어서 국선 신호 검출회로
KR910003300B1 (ko) 국선 및 전용선의 공용 인터페이스회로
KR0145481B1 (ko) 전원잡음 제거기능을 갖는 전자식 교환시스템
KR930011204B1 (ko) 통신시스템의 가입자 인터페이스 회로
SU658774A2 (ru) Автоматическое устройство дл подачи сигнала "отсутствие абонента
JPS61166272A (ja) 網制御回路
JPS62241493A (ja) ル−プ検出回路

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070910

Year of fee payment: 13

LAPS Lapse due to unpaid annual fee