The patent pending I-Plate filter works by isolating the interference created by electrical equipment in the home from bleeding over onto the bell wire, a third wire that runs alongside the pair of wires that carries the telephony and broadband signal.
The I-Plate itself must be fitted between the front and back plate of the master telephone socket. Once done, BT claims that customers should experience faster speeds, a more stable broadband connection and slight improvements in broadband performance over 'long lines'.
To be eligible for an I-Plate, customers need to have a BT NTE 5 master socket and extension wiring in their home. BT estimates that seven out of 10
In a benchmark survey of 36,000 lines, BT found that filtered broadband lines typically showed a speed increase of up to 1.5Mb/sec, with some lines showing speed improvements of as much as 4Mb/sec.
Homes that are some distance from their telephone exchange may receive an improved service if they install the device, while others that were previously just beyond the reach of a broadband service may be able to recieve one.