The RF3 version is upgraded from RF2 which reduced ADSL performance. BT80b RF3 allows it to be used on lines which carry ADSL signals.
GENUINE BT 80B TELEPHONE JUNCTION BOX BT80B WITH LOGO BT OPENREACH LOGO
GENUINE BT 80B TELEPHONE JUNCTION BOX BT80B WITH BT LOGO
BT 80B TELEPHONE JUNCTION BOX BT80B 80A - GENUINE BT OPENREACH CONNECTION
GENUINE BT BLOCK TERMINAL 80B. BRAND NEW AND SEALED IN PACKET.
GENUINE BT JUNCTION CONNECTION BOX + 4 JELLY TELEPHONE CABLE CRIMPS 16A 78B 80B
Genuine BT Broadband Line Stabilizer Conditioner Noise Reduction 80B REIN Filter
