DK480276A - - Google Patents

Info

Publication number
DK480276A
DK480276A DK480276A DK480276A DK480276A DK 480276 A DK480276 A DK 480276A DK 480276 A DK480276 A DK 480276A DK 480276 A DK480276 A DK 480276A DK 480276 A DK480276 A DK 480276A
Authority
DK
Denmark
Application number
DK480276A
Other languages
Danish (da)
Other versions
DK141230C (zh
DK141230B (da
Inventor
P A B Tornqvist
Original Assignee
Ericsson L M Tlfab
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 Ericsson L M Tlfab filed Critical Ericsson L M Tlfab
Publication of DK480276A publication Critical patent/DK480276A/da
Publication of DK141230B publication Critical patent/DK141230B/da
Application granted granted Critical
Publication of DK141230C publication Critical patent/DK141230C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2209—Arrangements for supervision, monitoring or testing for lines also used for data transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Amplifiers (AREA)
  • Control Of Eletrric Generators (AREA)
DK480276AA 1975-10-24 1976-10-22 Telekommunikationsanlæg med automatisk alarm ved afbrydelse af signaloverføringen. DK141230B (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7511950 1975-10-24
SE7511950A SE387807B (sv) 1975-10-24 1975-10-24 Telekommunikationssystem i vilket ett larm vid ett avbrott i en tvavegs overforing av signaler er anordnat att kunna inhiberas

Publications (3)

Publication Number Publication Date
DK480276A true DK480276A (zh) 1977-04-25
DK141230B DK141230B (da) 1980-02-04
DK141230C DK141230C (zh) 1980-07-21

Family

ID=20325897

Family Applications (1)

Application Number Title Priority Date Filing Date
DK480276AA DK141230B (da) 1975-10-24 1976-10-22 Telekommunikationsanlæg med automatisk alarm ved afbrydelse af signaloverføringen.

Country Status (4)

Country Link
DK (1) DK141230B (zh)
FI (1) FI62437C (zh)
NO (1) NO137876C (zh)
SE (1) SE387807B (zh)

Also Published As

Publication number Publication date
DK141230C (zh) 1980-07-21
FI62437C (fi) 1982-12-10
FI62437B (fi) 1982-08-31
FI762818A (zh) 1977-04-25
DK141230B (da) 1980-02-04
NO137876C (no) 1978-05-24
SE387807B (sv) 1976-09-13
NO763607L (zh) 1977-04-26
NO137876B (no) 1978-01-30

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Legal Events

Date Code Title Description
PUP Patent expired