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
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 SAfiledCriticalAlcatel Espana SA
Publication of ES237707A1publicationCriticalpatent/ES237707A1/en
Automatic message logging system for an automatic telephone switching system having automatic telephone sets and trunk lines, a magnetic cylinder for the temporary storage of call information, means for turning said cylinder at a given speed, at least one writer head for storing information in said cylinder in a circumferential groove thereof, means for controlling the feed to said call information writer from a number of link lines to record in predetermined areas in said groove the call information of any number of said link lines that can be picked up to make interurban calls, a reader head and operable means upon completion of a call to cause said reader head to extract call information from said groove. (Machine-translation by Google Translate, not legally binding)
ES0237707A1956-10-151957-09-21Automatic system recording messages (Machine-translation by Google Translate, not legally binding)
ExpiredES237707A1
(en)
Improvements relating to arrangements for automatically identifying calling numbers pertaining to calling lines in telephone systems, and for automatically deriving other information pertaining to such lines
Improvements relating to arrangements for automatically identifying calling numbers pertaining to calling lines in telephone systems, and for automatically deriving other information pertaining to such lines