H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 11/06 (2006.01) H04L 25/02 (2006.01) H04L 25/12 (2006.01)
Patent
CA 2367434
The invention concerns a filtering device for a narrow band terminal in a private installation connected to an access network providing narrow band services (analog or ISDN) and broadband services (xDSL or Home PNA). The invention is characterised in that the device comprises low-pass filtering means (F) associated with insulating means (I) enabling the device to have a high input impedance insulating the installation when the narrow band terminal is hung up while allowing through the ringing signal. The invention is applicable to private telephone-teleinformatics installations.
L'invention concerne un dispositif de filtrage pour un terminal bande étroite dans une installation privative raccordée à un réseau d'accès portant des services bande étroite (analogique ou RNIS) et des services large-bande (xDSL ou HomePNA). Selon l'invention, le dispositif comprend des moyens de filtrage passe-bas (F) associé à des moyens d'isolation (I) permettant au dispositif de présenter une impédance d'entrée élevée l'isolant de l'installation lorsque le terminal bande étroite est raccroché tout en laissant passer le signal de sonnerie. L'invention s'applique aux installations téléphoniques- téléinformatiques privatives.
Bencivengo Alain
Durel Vincent
Rahyer Alain
France Telecom
Robic
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