NL7811729A - LINE AMPLIFIER FOR FOUR WIRE TRANSMISSION DEVICES. - Google Patents

LINE AMPLIFIER FOR FOUR WIRE TRANSMISSION DEVICES.

Info

Publication number
NL7811729A
NL7811729A NL7811729A NL7811729A NL7811729A NL 7811729 A NL7811729 A NL 7811729A NL 7811729 A NL7811729 A NL 7811729A NL 7811729 A NL7811729 A NL 7811729A NL 7811729 A NL7811729 A NL 7811729A
Authority
NL
Netherlands
Prior art keywords
transmission devices
wire transmission
line amplifier
amplifier
line
Prior art date
Application number
NL7811729A
Other languages
Dutch (nl)
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 NL7811729A publication Critical patent/NL7811729A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Fire Alarms (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
NL7811729A 1977-11-30 1978-11-30 LINE AMPLIFIER FOR FOUR WIRE TRANSMISSION DEVICES. NL7811729A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2753465A DE2753465C2 (en) 1977-11-30 1977-11-30 Line amplifier for four-wire communications equipment

Publications (1)

Publication Number Publication Date
NL7811729A true NL7811729A (en) 1979-06-01

Family

ID=6025020

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7811729A NL7811729A (en) 1977-11-30 1978-11-30 LINE AMPLIFIER FOR FOUR WIRE TRANSMISSION DEVICES.

Country Status (10)

Country Link
JP (1) JPS54100212A (en)
AT (1) AT375509B (en)
AU (1) AU515433B2 (en)
DE (1) DE2753465C2 (en)
DK (1) DK534678A (en)
IT (1) IT1101136B (en)
NL (1) NL7811729A (en)
NO (1) NO145969C (en)
SE (1) SE7812133L (en)
YU (1) YU40050B (en)

Also Published As

Publication number Publication date
DE2753465C2 (en) 1979-10-04
DE2753465B1 (en) 1979-01-18
AU4179778A (en) 1979-06-07
SE7812133L (en) 1979-05-31
AU515433B2 (en) 1981-04-02
NO784019L (en) 1979-05-31
YU281178A (en) 1983-04-30
IT7830133A0 (en) 1978-11-24
IT1101136B (en) 1985-09-28
DK534678A (en) 1979-05-31
ATA857578A (en) 1983-12-15
NO145969C (en) 1982-06-30
NO145969B (en) 1982-03-22
YU40050B (en) 1985-06-30
JPS54100212A (en) 1979-08-07
AT375509B (en) 1984-08-10

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
A85 Still pending on 85-01-01
BC A request for examination has been filed
BV The patent application has lapsed