FI832645A0 - PROCEDURE FOR ANALOGUE ASSESSMENT OF COMMUNICATIONS - Google Patents

PROCEDURE FOR ANALOGUE ASSESSMENT OF COMMUNICATIONS

Info

Publication number
FI832645A0
FI832645A0 FI832645A FI832645A FI832645A0 FI 832645 A0 FI832645 A0 FI 832645A0 FI 832645 A FI832645 A FI 832645A FI 832645 A FI832645 A FI 832645A FI 832645 A0 FI832645 A0 FI 832645A0
Authority
FI
Finland
Prior art keywords
analogue
assessment
communications
procedure
analogue assessment
Prior art date
Application number
FI832645A
Other languages
Finnish (fi)
Other versions
FI832645A (en
FI79431C (en
FI79431B (en
Inventor
Erich Naiwirt
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of FI832645A0 publication Critical patent/FI832645A0/en
Publication of FI832645A publication Critical patent/FI832645A/en
Application granted granted Critical
Publication of FI79431B publication Critical patent/FI79431B/en
Publication of FI79431C publication Critical patent/FI79431C/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
FI832645A 1982-07-22 1983-07-20 KOPPLINGSANORDNING MED TVAOTRAODS-FYRTRAODSOMVANDLING. FI79431C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT283982 1982-07-22
AT283982A AT384337B (en) 1982-07-22 1982-07-22 INTERFACE SWITCHING WITH TWO-WIRE-FOUR-WIRE CONVERSION FOR TELEPHONE PABX SYSTEMS

Publications (4)

Publication Number Publication Date
FI832645A0 true FI832645A0 (en) 1983-07-20
FI832645A FI832645A (en) 1984-01-23
FI79431B FI79431B (en) 1989-08-31
FI79431C FI79431C (en) 1989-12-11

Family

ID=3541110

Family Applications (1)

Application Number Title Priority Date Filing Date
FI832645A FI79431C (en) 1982-07-22 1983-07-20 KOPPLINGSANORDNING MED TVAOTRAODS-FYRTRAODSOMVANDLING.

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.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305080A1 (en) * 1975-03-20 1976-10-15 Jeumont Schneider ELECTRONIC TERMINER
US4150260A (en) * 1975-06-18 1979-04-17 Hitachi, Ltd. Subscriber's circuit for four-wire-system local switch
CH599731A5 (en) * 1976-03-02 1978-05-31 Ibm
US4142075A (en) * 1977-10-11 1979-02-27 Burr-Brown Research Corporation Interface circuit and method for telephone extension lines
NL7802423A (en) * 1978-03-06 1979-09-10 Philips Nv POWER SUPPLY FOR A LINE CURRENT.
CH641299A5 (en) * 1978-11-13 1984-02-15 Landis & Gyr Ag Width-pause duration modulator for measurement purposes.

Also Published As

Publication number Publication date
AT384337B (en) 1987-10-27
CH662023A5 (en) 1987-08-31
FI832645A (en) 1984-01-23
DE3326037C2 (en) 1990-09-06
BE897350A (en) 1984-01-23
FI79431C (en) 1989-12-11
ATA283982A (en) 1987-03-15
MX154966A (en) 1988-01-14
ES524385A0 (en) 1984-08-01
GB2126049B (en) 1985-10-02
AU1692883A (en) 1984-01-26
GB2126049A (en) 1984-03-14
GB8319839D0 (en) 1983-08-24
FI79431B (en) 1989-08-31
DE3326037A1 (en) 1984-01-26
ES8500689A1 (en) 1984-08-01

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: ALCATEL N.V.