AT384337B - INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS - Google Patents

INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS

Info

Publication number
AT384337B
AT384337B AT283982A AT283982A AT384337B AT 384337 B AT384337 B AT 384337B AT 283982 A AT283982 A AT 283982A AT 283982 A AT283982 A AT 283982A AT 384337 B AT384337 B AT 384337B
Authority
AT
Austria
Prior art keywords
wire
interface switching
conversion
pabx systems
telephone
Prior art date
Application number
AT283982A
Other languages
German (de)
Other versions
ATA283982A (en
Inventor
Erich Ing Naiwirt
Original Assignee
Alcatel Austria Ag
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 Alcatel Austria Ag filed Critical Alcatel Austria Ag
Priority to AT283982A priority Critical patent/AT384337B/en
Priority to MX19804083A priority patent/MX154966A/en
Priority to AU16928/83A priority patent/AU1692883A/en
Priority to DE19833326037 priority patent/DE3326037A1/en
Priority to FI832645A priority patent/FI79431C/en
Priority to CH399583A priority patent/CH662023A5/en
Priority to GB08319839A priority patent/GB2126049B/en
Priority to ES524385A priority patent/ES8500689A1/en
Priority to BE2/60166A priority patent/BE897350A/en
Publication of ATA283982A publication Critical patent/ATA283982A/en
Application granted granted Critical
Publication of AT384337B publication Critical patent/AT384337B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/587—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using opto-couplers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval
    • 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
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/50—Conversion between different kinds of signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Amplifiers (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Small-Scale Networks (AREA)
AT283982A 1982-07-22 1982-07-22 INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS AT384337B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AT283982A AT384337B (en) 1982-07-22 1982-07-22 INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS
MX19804083A MX154966A (en) 1982-07-22 1983-07-14 IMPROVEMENTS TO THE INTERFACE CIRCUIT FOR A TELEPHONE TRANSMISSION SYSTEM
AU16928/83A AU1692883A (en) 1982-07-22 1983-07-18 Hybrid circuit
FI832645A FI79431C (en) 1982-07-22 1983-07-20 KOPPLINGSANORDNING MED TVAOTRAODS-FYRTRAODSOMVANDLING.
DE19833326037 DE3326037A1 (en) 1982-07-22 1983-07-20 CIRCUIT ARRANGEMENT FOR ANALOGUE TRANSMISSION OF VOICE SIGNALS AND COMMUNICATION TAGS
CH399583A CH662023A5 (en) 1982-07-22 1983-07-21 CIRCUIT ARRANGEMENT FOR ANALOGUE TRANSMISSION OF VOICE SIGNALS AND MEDIATION-SPECIFIC TAGS.
GB08319839A GB2126049B (en) 1982-07-22 1983-07-22 Interface circuit
ES524385A ES8500689A1 (en) 1982-07-22 1983-07-22 Interface circuit
BE2/60166A BE897350A (en) 1982-07-22 1983-07-22 CIRCUIT ARRANGEMENT FOR THE ANALOGUE TRANSMISSION OF CONVERSATION AND CONTROL SIGNALS,

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT283982A AT384337B (en) 1982-07-22 1982-07-22 INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS

Publications (2)

Publication Number Publication Date
ATA283982A ATA283982A (en) 1987-03-15
AT384337B true AT384337B (en) 1987-10-27

Family

ID=3541110

Family Applications (1)

Application Number Title Priority Date Filing Date
AT283982A AT384337B (en) 1982-07-22 1982-07-22 INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS

Country Status (9)

Country Link
AT (1) AT384337B (en)
AU (1) AU1692883A (en)
BE (1) BE897350A (en)
CH (1) CH662023A5 (en)
DE (1) DE3326037A1 (en)
ES (1) ES8500689A1 (en)
FI (1) FI79431C (en)
GB (1) GB2126049B (en)
MX (1) MX154966A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841814C2 (en) * 1988-12-12 1995-05-24 Ferenc J Horvath Connection circuit
ES2048683B1 (en) * 1992-11-19 1997-07-01 Univ Cordoba OPTO-COUPLING SYSTEM OF ELECTRICAL DIGITAL SIGNALS FOR PROTECTION AND ISOLATION OF ELECTRONIC DEVICES FROM STATIONARY AND TRANSITORY OVERVOLTAGES.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039766A (en) * 1975-03-20 1977-08-02 Jeumont-Schneider Electric two-to-four wire conversion circuit for use in telephone systems
DE2649024A1 (en) * 1976-03-02 1977-09-08 Ibm SUBSCRIBER CONNECTION
DE2844304A1 (en) * 1977-10-11 1979-04-12 Burr Brown Res Corp TELEPHONE INTERFACE CIRCUIT
EP0011093A1 (en) * 1978-11-13 1980-05-28 LGZ LANDIS & GYR ZUG AG Mark-to-space ratio pulse modulator
DE2627140B2 (en) * 1975-06-18 1980-09-18 Hitachi, Ltd., Tokio Hybrid circuit in subscriber circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802423A (en) * 1978-03-06 1979-09-10 Philips Nv POWER SUPPLY FOR A LINE CURRENT.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039766A (en) * 1975-03-20 1977-08-02 Jeumont-Schneider Electric two-to-four wire conversion circuit for use in telephone systems
DE2627140B2 (en) * 1975-06-18 1980-09-18 Hitachi, Ltd., Tokio Hybrid circuit in subscriber circuit
DE2649024A1 (en) * 1976-03-02 1977-09-08 Ibm SUBSCRIBER CONNECTION
DE2844304A1 (en) * 1977-10-11 1979-04-12 Burr Brown Res Corp TELEPHONE INTERFACE CIRCUIT
EP0011093A1 (en) * 1978-11-13 1980-05-28 LGZ LANDIS & GYR ZUG AG Mark-to-space ratio pulse modulator

Also Published As

Publication number Publication date
GB2126049A (en) 1984-03-14
ES524385A0 (en) 1984-08-01
ES8500689A1 (en) 1984-08-01
BE897350A (en) 1984-01-23
FI832645A0 (en) 1983-07-20
CH662023A5 (en) 1987-08-31
AU1692883A (en) 1984-01-26
FI832645A (en) 1984-01-23
FI79431C (en) 1989-12-11
ATA283982A (en) 1987-03-15
DE3326037A1 (en) 1984-01-26
DE3326037C2 (en) 1990-09-06
MX154966A (en) 1988-01-14
FI79431B (en) 1989-08-31
GB8319839D0 (en) 1983-08-24
GB2126049B (en) 1985-10-02

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee