FR1431531A - Montage pour transmettre des signaux sur des lignes à deux fils dans des installations de télécommunication, et en particulier de téléphonie
- Google Patents
Montage pour transmettre des signaux sur des lignes à deux fils dans des installations de télécommunication, et en particulier de téléphonie
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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
Priority claimed from DES90866Aexternal-prioritypatent/DE1194458B/de
Application filed by Siemens and Halske AG, Siemens CorpfiledCriticalSiemens and Halske AG
Priority to FR13994ApriorityCriticalpatent/FR1431531A/fr
Application grantedgrantedCritical
Publication of FR1431531ApublicationCriticalpatent/FR1431531A/fr
H04Q1/00—Details of selecting apparatus or arrangements
H04Q1/18—Electrical details
H04Q1/30—Signalling arrangements; Manipulation of signalling currents
H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
FR13994A1964-04-301965-04-21Montage pour transmettre des signaux sur des lignes à deux fils dans des installations de télécommunication, et en particulier de téléphonie
ExpiredFR1431531A
(fr)
Perfectionnements au recueillement des impulsions de signalisation arrivant dans un ordre de succession quelconque sur des lignes de télécommunication, notamment des impulsions de taxation dans des installations téléphoniques