NL7709172A - Terminaluitrusting voor een multiplex-telefoon- stelsel met draaggolven. - Google Patents

Terminaluitrusting voor een multiplex-telefoon- stelsel met draaggolven.

Info

Publication number
NL7709172A
NL7709172A NL7709172A NL7709172A NL7709172A NL 7709172 A NL7709172 A NL 7709172A NL 7709172 A NL7709172 A NL 7709172A NL 7709172 A NL7709172 A NL 7709172A NL 7709172 A NL7709172 A NL 7709172A
Authority
NL
Netherlands
Prior art keywords
multiplex
terminal equipment
carrier waves
phone system
phone
Prior art date
Application number
NL7709172A
Other languages
English (en)
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of NL7709172A publication Critical patent/NL7709172A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
NL7709172A 1976-08-24 1977-08-18 Terminaluitrusting voor een multiplex-telefoon- stelsel met draaggolven. NL7709172A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7625577A FR2363247A1 (fr) 1976-08-24 1976-08-24 Equipement terminal pour un systeme multiplex telephonique a courants porteurs

Publications (1)

Publication Number Publication Date
NL7709172A true NL7709172A (nl) 1978-02-28

Family

ID=9177096

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7709172A NL7709172A (nl) 1976-08-24 1977-08-18 Terminaluitrusting voor een multiplex-telefoon- stelsel met draaggolven.

Country Status (7)

Country Link
US (1) US4130743A (nl)
JP (1) JPS5326608A (nl)
DE (1) DE2737082A1 (nl)
FR (1) FR2363247A1 (nl)
GB (1) GB1534470A (nl)
NL (1) NL7709172A (nl)
SE (1) SE428622B (nl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644108A (en) * 1982-10-27 1987-02-17 International Business Machines Corporation Adaptive sub-band echo suppressor
GB2139054B (en) * 1983-04-22 1986-09-24 Gen Electric Co Plc Loudspeaking telephone instruments
US7113750B2 (en) * 2002-12-16 2006-09-26 Tektronix, Inc. Apparatus and method for input channel isolation within an electronic test instrument
CN100442059C (zh) * 2004-05-21 2008-12-10 特克特朗尼克公司 在电子测试仪器中用于将输入信道隔离的装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251028A (en) * 1940-09-28 1941-07-29 Bell Telephone Labor Inc Control of transmission in two-way signal wave transmission systems
US2258966A (en) * 1940-10-12 1941-10-14 Bell Telephone Labor Inc Control of transmission in two-way signaling systems
US2295153A (en) * 1941-06-10 1942-09-08 Bell Telephone Labor Inc Two-way signal transmission system
US3397401A (en) * 1966-05-27 1968-08-13 Hughes Aircraft Co Voice operated communication system
US3896273A (en) * 1971-01-08 1975-07-22 Communications Satellite Corp Digital echo suppressor
DE2457876C3 (de) * 1973-12-10 1981-06-04 Compagnie Industrielle des Télécommunications CIT-ALCATEL S.A., 75008 Paris Echounterdrücker für ein Endgerät einer elektrischen Vierdrahtfernsprechleitung
US3942116A (en) * 1975-03-13 1976-03-02 California Microwave, Inc. Transceiver having improved voice actuated carrier and echo suppression circuit

Also Published As

Publication number Publication date
FR2363247B1 (nl) 1981-03-06
SE428622B (sv) 1983-07-11
JPS5326608A (en) 1978-03-11
DE2737082A1 (de) 1978-03-09
SE7709461L (sv) 1978-02-25
US4130743A (en) 1978-12-19
FR2363247A1 (fr) 1978-03-24
GB1534470A (en) 1978-12-06

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Legal Events

Date Code Title Description
BV The patent application has lapsed