FILTERING DEVICE, FOR HIGH SPEED MODEM IN ALTERNATE MODE, OPERATING AS ISOLATOR OR ADAPTER

摘要

The invention concerns a filtering device for high speed modem in alternate mode in a copper terminal installation connected to an access network (RA) delivering narrow band services and broadband services, said installation comprising at least one high-speed modem (20) and connecting jacks (P). The device enables operation as adapter when the jacks are not connected to a broadband modem, so as to avoid line mismatch problems, and as isolator when the high-speed modem (20) is connected to a jack (P) so as to avoid perturbations in the broadband transmission. The invention is in particular applicable to broadband transmission based on private systems called Home PNA.