Overview: SoGEA 160 Mbps and 330 Mbps variants come with a dedicated socket & OpenReach modem, but the more common 80 Mbps SoGEA (widely available) requires either a modern NTE5c wall socket or a VDSL2/GFast filter. These are the types of sockets that may be present in buildings that previously had a PSTN copper line. Detailed OpenReach PDF attached.

NTE5c with SSFP: this is the preferred socket, with a removable  SSFP (Service Specific Face Plate), revealing a "test socket" for diagnostics. Note that the telephone socket is not used with SoGEA, the GEA (Generic Ethernet Access) data service making full use of the bandwidth.

Other types of built-in filters: obsolete filtered face plates, such as below, have filters that do not work with SoGEA (VDSL1, ADSL2, ADSL1, ISDN). To make such sockets work with SoGEA, remove the faceplate and use a VDSL2/GFast filter.

Types without built-in filter: we recommend removing the face plate (reduces interference) and connect a VDSL2/GFast filter directly into the concealed socket behind the face plate.