IT1034876B - MULTIPLE SWITCHING DEVICE AND ALARM SPECIES FOR TRANSMISSION SYSTEMS AT GLASS FREQUENCIES - Google Patents

MULTIPLE SWITCHING DEVICE AND ALARM SPECIES FOR TRANSMISSION SYSTEMS AT GLASS FREQUENCIES

Info

Publication number
IT1034876B
IT1034876B IT22047/75A IT2204775A IT1034876B IT 1034876 B IT1034876 B IT 1034876B IT 22047/75 A IT22047/75 A IT 22047/75A IT 2204775 A IT2204775 A IT 2204775A IT 1034876 B IT1034876 B IT 1034876B
Authority
IT
Italy
Prior art keywords
frequencies
glass
switching device
transmission systems
multiple switching
Prior art date
Application number
IT22047/75A
Other languages
Italian (it)
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
Priority claimed from DE19742417264 external-priority patent/DE2417264C3/en
Priority claimed from DE19742417371 external-priority patent/DE2417371C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of IT1034876B publication Critical patent/IT1034876B/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
    • H04B1/74—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 for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
IT22047/75A 1974-04-09 1975-04-07 MULTIPLE SWITCHING DEVICE AND ALARM SPECIES FOR TRANSMISSION SYSTEMS AT GLASS FREQUENCIES IT1034876B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742417264 DE2417264C3 (en) 1974-04-09 1974-04-09 Synchronous monitoring circuit
DE19742417371 DE2417371C3 (en) 1974-04-09 Multiple switching and alarming device

Publications (1)

Publication Number Publication Date
IT1034876B true IT1034876B (en) 1979-10-10

Family

ID=25766952

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22047/75A IT1034876B (en) 1974-04-09 1975-04-07 MULTIPLE SWITCHING DEVICE AND ALARM SPECIES FOR TRANSMISSION SYSTEMS AT GLASS FREQUENCIES

Country Status (8)

Country Link
JP (1) JPS50144367A (en)
AT (1) AT348025B (en)
FR (1) FR2275061A1 (en)
GB (1) GB1495419A (en)
IL (1) IL47031A (en)
IT (1) IT1034876B (en)
NL (1) NL168097C (en)
SE (1) SE397760B (en)

Also Published As

Publication number Publication date
FR2275061A1 (en) 1976-01-09
NL168097B (en) 1981-09-16
AU7999475A (en) 1976-10-14
JPS50144367A (en) 1975-11-20
FR2275061B1 (en) 1978-02-03
NL7504199A (en) 1975-10-13
AT348025B (en) 1979-01-25
IL47031A0 (en) 1975-06-25
SE7504010L (en) 1975-10-10
ATA252675A (en) 1978-06-15
IL47031A (en) 1979-01-31
GB1495419A (en) 1977-12-21
NL168097C (en) 1982-02-16
SE397760B (en) 1977-11-14

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