ZA79892B - Digital telecommunications systems - Google Patents

Digital telecommunications systems

Info

Publication number
ZA79892B
ZA79892B ZA79892A ZA79892A ZA79892B ZA 79892 B ZA79892 B ZA 79892B ZA 79892 A ZA79892 A ZA 79892A ZA 79892 A ZA79892 A ZA 79892A ZA 79892 B ZA79892 B ZA 79892B
Authority
ZA
South Africa
Prior art keywords
telecommunications systems
digital telecommunications
digital
systems
telecommunications
Prior art date
Application number
ZA79892A
Other languages
English (en)
Inventor
H Strehl
Original Assignee
Siemens 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 Siemens Ag filed Critical Siemens Ag
Publication of ZA79892B publication Critical patent/ZA79892B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
ZA79892A 1978-02-23 1979-02-23 Digital telecommunications systems ZA79892B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782807785 DE2807785A1 (de) 1978-02-23 1978-02-23 Digitales nachrichtenuebertragungssystem

Publications (1)

Publication Number Publication Date
ZA79892B true ZA79892B (en) 1980-03-26

Family

ID=6032753

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA79892A ZA79892B (en) 1978-02-23 1979-02-23 Digital telecommunications systems

Country Status (13)

Country Link
US (1) US4236244A (da)
EP (1) EP0003848A1 (da)
JP (1) JPS5513595A (da)
AR (1) AR218363A1 (da)
AU (1) AU517838B2 (da)
BE (1) BE873804A (da)
BR (1) BR7901158A (da)
DE (1) DE2807785A1 (da)
DK (1) DK77379A (da)
FI (1) FI790603A (da)
GB (1) GB2016871B (da)
NO (1) NO790596L (da)
ZA (1) ZA79892B (da)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916576C3 (de) * 1979-04-24 1981-12-10 Siemens AG, 1000 Berlin und 8000 München Digital-Fernmeldesystem für Zweidraht-Getrenntlage-Betrieb
CA1159972A (en) * 1980-05-15 1984-01-03 Zdzistaw A. A. Krajewski 2-wire frequency division multiplex system
DE3019835C2 (de) * 1980-05-23 1983-12-01 Siemens AG, 1000 Berlin und 8000 München Übertragerfreie Gabelschaltung
JPS5860577A (ja) * 1981-10-07 1983-04-11 Hitachi Ltd 半導体装置
GB2146509B (en) * 1983-09-10 1986-08-13 Stc Plc Data transmission system
DE3702202A1 (de) * 1987-01-26 1988-08-04 Dirr Josef Verfahren fuer die uebertragung analoger und/oder digitaler information, insbesondere unter zwischenschaltung einer, 2er oder mehrerer vermittlungen in fernmeldeanlagen
DE19844457C1 (de) * 1998-09-28 2000-07-06 Siemens Ag Verfahren zur Duplex-Datenübertragung mit QAM und Demodulator zur Verwendung in diesem Verfahren
CN103226025B (zh) * 2012-12-17 2017-02-08 天津市北方阀门控制设备有限公司 一种两线制位置变送器电路
US11133864B1 (en) * 2020-04-24 2021-09-28 Ciena Corporation Measurement of crosstalk

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655915A (en) * 1970-05-07 1972-04-11 Gen Datacomm Ind Inc Closed loop test method and apparatus for duplex data transmission modem
DE2141198C3 (de) * 1971-08-17 1978-03-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Schleifenmessung bei Modem für Zweidrahtbetrieb
US3715496A (en) * 1971-10-21 1973-02-06 Ibm Digital band-pass filter for a single circuit full duplex transmission system
US3846582A (en) * 1973-08-06 1974-11-05 Bell Telephone Labor Inc Data transmission terminal for fsk frequency duplexed systems
US3937882A (en) * 1974-04-11 1976-02-10 Vadic Corporation Full-duplex communication system on a two wire line
US3993867A (en) * 1974-10-15 1976-11-23 Motorola, Inc. Digital single signal line full duplex method and apparatus
US3936602A (en) * 1974-10-23 1976-02-03 Northern Electric Company Limited Full duplex data transmission system using two speeds of diphase signal for simplified sync
DE2543696C3 (de) * 1975-09-30 1980-04-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Umsetzung von Digital-Signalen in Analog-Signale und zur Umsetzung von Analog-Signalen in Digital-Signale
US4041398A (en) * 1976-06-03 1977-08-09 Icc, Inc. Bi-directional digital communication network

Also Published As

Publication number Publication date
DK77379A (da) 1979-08-24
AU517838B2 (en) 1981-08-27
AR218363A1 (es) 1980-05-30
GB2016871B (en) 1982-04-15
EP0003848A1 (de) 1979-09-05
BE873804A (fr) 1979-05-16
DE2807785A1 (de) 1979-08-30
AU4451379A (en) 1979-08-30
NO790596L (no) 1979-08-24
FI790603A (fi) 1979-08-24
BR7901158A (pt) 1979-10-09
US4236244A (en) 1980-11-25
GB2016871A (en) 1979-09-26
JPS5513595A (en) 1980-01-30

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