Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Standard Electrica SA
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 Alcatel Espana SA, Standard Electrica SAfiledCriticalAlcatel Espana SA
Priority to ES209000ApriorityCriticalpatent/ES209000A3/en
Publication of ES209000A3publicationCriticalpatent/ES209000A3/en
Improvements in systems of automatic telephone exchanges comprising a number of subscriber lines arranged in groups, a register and a number of selector switches characterized in that said selector switches are arranged in first and second sets with the switches of said first set individually connected to the groups of lines and in common to said recorder and being arranged to connect to said recorder a calling line and to select the line from among a group of lines with the switches of said second set of switches being connected in common to all the lines of the exchanges and ready to select the group of the called line. (Machine-translation by Google Translate, not legally binding)
ES209000A1953-04-281953-04-28Improvements in systems of automatic telephone plants (Machine-translation by Google Translate, not legally binding)
ExpiredES209000A3
(en)
Circuit arrangement for telecommunications systems for connection to telephone exchanges, in particular telephone private branch exchanges, with individual remote subscriber dialing block