The BT Openreach Master Socket NTE5c MK2 has a frontplate which has the microfilter built in, allowing for routers and modems to plug straight into the socket via an RJ11 cable.
BT OPENREACH MASTER SOCKET NTE5C MK2 REPLACEMENT TELEPHONE SOCKET TOOLESS
BT OPENREACH MASTER SOCKET NTE5C MK2 REPLACEMENT TELEPHONE SOCKET TOOLESS - uk
BT OPENREACH MASTER SOCKET NTE5C MK2 REPLACEMENT TELEPHONE TOOLLESS SOCKET
