The ADSL filter is BT Approved. Attenuation of ADSL and HPN signals to prevent intrusion intot voice band frequencies.
BT openreach ADSL/VDSL Filter MK4 Including Master Socket 5C
Genuine BT Master Socket DSL ADSL Phone Filter Faceplate Box 4 Openreach Nte5c
BT Openreach NTE5c MK4 Master Telephone Socket VDSL2 ADSL Faceplate Filter Set
BT OPENREACH NTE5 MASTER PHONE SOCKET AND VDSL2/ADSL FACEPLATE FILTER KIT mk4
BT plug - Socket & RJ11 Socket. Leaded ADSL Micro filter
Plug-In ADSL Broadband Filter
