... 50u'' ISO9001,CE,ROHS OEM is welcome Belguim Precision ADSL Filter· This product exported to Italy, Australia, New Zealand, United ... signal.· Protect the voice signal and ADSL digital signal from interference of a telephone/a fax.· Metal parts:Nickel plated ... Our ZKX has rich experience in manufacturing ADSL splitter, ADSL filter, Telephone adapter, Telephone plug, Modular jack, Phone handset, Phone ...