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 AgfiledCriticalEricsson Ag
Publication of DK54479ApublicationCriticalpatent/DK54479A/en
Publication of DK147748BpublicationCriticalpatent/DK147748B/en
Application grantedgrantedCritical
Publication of DK147748CpublicationCriticalpatent/DK147748C/en
H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
Landscapes
Engineering & Computer Science (AREA)
Signal Processing (AREA)
Alarm Systems (AREA)
Telephonic Communication Services (AREA)
DK54479A1978-02-101979-02-09 ALARM SYSTEMS INCLUDING A NUMBER OF SUBSCRIBER DEVICES AND AN ALARM CENTER FOR OPERATING THESEDK147748C (en)
SET FOR IN A TELECOMMUNICATION SYSTEM IF CALL TO NIGHT COUPLE JOURCENTRAL OR JOURCENTRAL FROM OPERATION ASTADKOMMA AUTOMATIC CONVERSION TO ANOTHER JOURCENTRAL AND DEVICE FOR IMPLEMENTATION OF THE SET