FI51415C - Switching system for monitoring the switching state of signal lines in communications, especially in telephone exchanges. - Google Patents

Switching system for monitoring the switching state of signal lines in communications, especially in telephone exchanges.

Info

Publication number
FI51415C
FI51415C FI98465A FI98465A FI51415C FI 51415 C FI51415 C FI 51415C FI 98465 A FI98465 A FI 98465A FI 98465 A FI98465 A FI 98465A FI 51415 C FI51415 C FI 51415C
Authority
FI
Finland
Prior art keywords
communications
monitoring
signal lines
switching
telephone exchanges
Prior art date
Application number
FI98465A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI51415B (en
Inventor
Josef Liegsalz
Kurt Fischer
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 FI51415B publication Critical patent/FI51415B/fi
Application granted granted Critical
Publication of FI51415C publication Critical patent/FI51415C/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
  • Rectifiers (AREA)
FI98465A 1964-04-24 1965-04-22 Switching system for monitoring the switching state of signal lines in communications, especially in telephone exchanges. FI51415C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964S0090735 DE1276751B (en) 1964-04-24 1964-04-24 Circuit arrangement for monitoring signal lines for their switching state in telecommunication systems, in particular telephone systems

Publications (2)

Publication Number Publication Date
FI51415B FI51415B (en) 1976-08-31
FI51415C true FI51415C (en) 1976-12-10

Family

ID=7516036

Family Applications (1)

Application Number Title Priority Date Filing Date
FI98465A FI51415C (en) 1964-04-24 1965-04-22 Switching system for monitoring the switching state of signal lines in communications, especially in telephone exchanges.

Country Status (8)

Country Link
AT (1) AT254277B (en)
BE (1) BE662958A (en)
CH (1) CH433458A (en)
DE (1) DE1276751B (en)
FI (1) FI51415C (en)
GB (1) GB1072762A (en)
NL (1) NL6504780A (en)
SE (1) SE353203B (en)

Also Published As

Publication number Publication date
GB1072762A (en) 1967-06-21
FI51415B (en) 1976-08-31
SE353203B (en) 1973-01-22
AT254277B (en) 1967-05-10
BE662958A (en) 1965-10-25
DE1276751B (en) 1968-09-05
NL6504780A (en) 1965-10-25
CH433458A (en) 1967-04-15

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