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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz 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 Standard Elektrik Lorenz AG, C Lorenz AGfiledCriticalStandard Elektrik Lorenz AG
Application grantedgrantedCritical
Publication of FR868502ApublicationCriticalpatent/FR868502A/fr
H04J1/085—Terminal station; Combined modulator and demodulator circuits
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/78—Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Computer Networks & Wireless Communication
(AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo
(AREA)
FR868502D1939-12-081940-12-28Dispositif servant à brancher un poste téléphonique d'abonné en bout de ligne sur une fréquence porteuse à quatre fils
ExpiredFR868502A
(fr)